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Merge remote-tracking branch 'origin/master'

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This commit is contained in:
Alex Theedom 2017-01-31 06:40:48 +00:00
commit 6c2ed878c0
248 changed files with 33942 additions and 2550 deletions
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1
.gitignore vendored
View File

@ -27,3 +27,4 @@ target/
spring-openid/src/main/resources/application.properties
.recommenders/
/spring-hibernate4/nbproject/

4
algorithms/src/main/java/com/baeldung/algorithms/dijkstra/Dijkstra.java
View File

@ -18,9 +18,7 @@ public class Dijkstra {
while (unsettledNodes.size() != 0) {
Node currentNode = getLowestDistanceNode(unsettledNodes);
unsettledNodes.remove(currentNode);
for (Entry<Node, Integer> adjacencyPair : currentNode
.getAdjacentNodes()
.entrySet()) {
for (Entry<Node, Integer> adjacencyPair : currentNode.getAdjacentNodes().entrySet()) {
Node adjacentNode = adjacencyPair.getKey();
Integer edgeWeigh = adjacencyPair.getValue();

20
algorithms/src/test/java/algorithms/DijkstraAlgorithmTest.java
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@ -55,29 +55,19 @@ public class DijkstraAlgorithmTest {
for (Node node : graph.getNodes()) {
switch (node.getName()) {
case "B":
assertTrue(node
.getShortestPath()
.equals(shortestPathForNodeB));
assertTrue(node.getShortestPath().equals(shortestPathForNodeB));
break;
case "C":
assertTrue(node
.getShortestPath()
.equals(shortestPathForNodeC));
assertTrue(node.getShortestPath().equals(shortestPathForNodeC));
break;
case "D":
assertTrue(node
.getShortestPath()
.equals(shortestPathForNodeD));
assertTrue(node.getShortestPath().equals(shortestPathForNodeD));
break;
case "E":
assertTrue(node
.getShortestPath()
.equals(shortestPathForNodeE));
assertTrue(node.getShortestPath().equals(shortestPathForNodeE));
break;
case "F":
assertTrue(node
.getShortestPath()
.equals(shortestPathForNodeF));
assertTrue(node.getShortestPath().equals(shortestPathForNodeF));
break;
}
}

15
annotations/annotation-processing/src/main/java/com/baeldung/annotation/processor/BuilderProcessor.java
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@ -27,17 +27,12 @@ public class BuilderProcessor extends AbstractProcessor {
Set<? extends Element> annotatedElements = roundEnv.getElementsAnnotatedWith(annotation);
Map<Boolean, List<Element>> annotatedMethods = annotatedElements.stream()
.collect(Collectors.partitioningBy(element ->
((ExecutableType) element.asType()).getParameterTypes().size() == 1
&& element.getSimpleName().toString().startsWith("set")));
Map<Boolean, List<Element>> annotatedMethods = annotatedElements.stream().collect(Collectors.partitioningBy(element -> ((ExecutableType) element.asType()).getParameterTypes().size() == 1 && element.getSimpleName().toString().startsWith("set")));
List<Element> setters = annotatedMethods.get(true);
List<Element> otherMethods = annotatedMethods.get(false);
otherMethods.forEach(element ->
processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR,
"@BuilderProperty must be applied to a setXxx method with a single argument", element));
otherMethods.forEach(element -> processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "@BuilderProperty must be applied to a setXxx method with a single argument", element));
if (setters.isEmpty()) {
continue;
@ -45,11 +40,7 @@ public class BuilderProcessor extends AbstractProcessor {
String className = ((TypeElement) setters.get(0).getEnclosingElement()).getQualifiedName().toString();
Map<String, String> setterMap = setters.stream().collect(Collectors.toMap(
setter -> setter.getSimpleName().toString(),
setter -> ((ExecutableType) setter.asType())
.getParameterTypes().get(0).toString()
));
Map<String, String> setterMap = setters.stream().collect(Collectors.toMap(setter -> setter.getSimpleName().toString(), setter -> ((ExecutableType) setter.asType()).getParameterTypes().get(0).toString()));
try {
writeBuilderFile(className, setterMap);

5
annotations/annotation-user/src/test/java/com/baeldung/annotation/PersonBuilderTest.java
View File

@ -9,10 +9,7 @@ public class PersonBuilderTest {
@Test
public void whenBuildPersonWithBuilder_thenObjectHasPropertyValues() {
Person person = new PersonBuilder()
.setAge(25)
.setName("John")
.build();
Person person = new PersonBuilder().setAge(25).setName("John").build();
assertEquals(25, person.getAge());
assertEquals("John", person.getName());

36
assertj/src/test/java/com/baeldung/assertj/introduction/AssertJCoreTest.java
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@ -38,8 +38,7 @@ public class AssertJCoreTest {
public void whenCheckingForElement_thenContains() throws Exception {
List<String> list = Arrays.asList("1", "2", "3");
assertThat(list)
.contains("1");
assertThat(list).contains("1");
}
@Test
@ -50,12 +49,7 @@ public class AssertJCoreTest {
assertThat(list).startsWith("1");
assertThat(list).doesNotContainNull();
assertThat(list)
.isNotEmpty()
.contains("1")
.startsWith("1")
.doesNotContainNull()
.containsSequence("2", "3");
assertThat(list).isNotEmpty().contains("1").startsWith("1").doesNotContainNull().containsSequence("2", "3");
}
@Test
@ -67,11 +61,7 @@ public class AssertJCoreTest {
public void whenCheckingCharacter_thenIsUnicode() throws Exception {
char someCharacter = 'c';
assertThat(someCharacter)
.isNotEqualTo('a')
.inUnicode()
.isGreaterThanOrEqualTo('b')
.isLowerCase();
assertThat(someCharacter).isNotEqualTo('a').inUnicode().isGreaterThanOrEqualTo('b').isLowerCase();
}
@Test
@ -94,11 +84,7 @@ public class AssertJCoreTest {
final File someFile = File.createTempFile("aaa", "bbb");
someFile.deleteOnExit();
assertThat(someFile)
.exists()
.isFile()
.canRead()
.canWrite();
assertThat(someFile).exists().isFile().canRead().canWrite();
}
@Test
@ -113,20 +99,14 @@ public class AssertJCoreTest {
public void whenGivenMap_then() throws Exception {
Map<Integer, String> map = Maps.newHashMap(2, "a");
assertThat(map)
.isNotEmpty()
.containsKey(2)
.doesNotContainKeys(10)
.contains(entry(2, "a"));
assertThat(map).isNotEmpty().containsKey(2).doesNotContainKeys(10).contains(entry(2, "a"));
}
@Test
public void whenGivenException_then() throws Exception {
Exception ex = new Exception("abc");
assertThat(ex)
.hasNoCause()
.hasMessageEndingWith("c");
assertThat(ex).hasNoCause().hasMessageEndingWith("c");
}
@Ignore // IN ORDER TO TEST, REMOVE THIS LINE
@ -134,8 +114,6 @@ public class AssertJCoreTest {
public void whenRunningAssertion_thenDescribed() throws Exception {
Person person = new Person("Alex", 34);
assertThat(person.getAge())
.as("%s's age should be equal to 100")
.isEqualTo(100);
assertThat(person.getAge()).as("%s's age should be equal to 100").isEqualTo(100);
}
}

39
assertj/src/test/java/com/baeldung/assertj/introduction/AssertJGuavaTest.java
View File

@ -26,9 +26,7 @@ public class AssertJGuavaTest {
final File temp1 = File.createTempFile("bael", "dung1");
final File temp2 = File.createTempFile("bael", "dung2");
assertThat(Files.asByteSource(temp1))
.hasSize(0)
.hasSameContentAs(Files.asByteSource(temp2));
assertThat(Files.asByteSource(temp1)).hasSize(0).hasSameContentAs(Files.asByteSource(temp2));
}
@Test
@ -37,11 +35,7 @@ public class AssertJGuavaTest {
mmap.put(1, "one");
mmap.put(1, "1");
assertThat(mmap)
.hasSize(2)
.containsKeys(1)
.contains(entry(1, "one"))
.contains(entry(1, "1"));
assertThat(mmap).hasSize(2).containsKeys(1).contains(entry(1, "one")).contains(entry(1, "1"));
}
@Test
@ -62,31 +56,21 @@ public class AssertJGuavaTest {
mmap2.put(1, "one");
mmap2.put(1, "1");
assertThat(mmap1)
.containsAllEntriesOf(mmap2)
.containsAllEntriesOf(mmap1_clone)
.hasSameEntriesAs(mmap1_clone);
assertThat(mmap1).containsAllEntriesOf(mmap2).containsAllEntriesOf(mmap1_clone).hasSameEntriesAs(mmap1_clone);
}
@Test
public void givenOptional_whenVerifyingContent_thenShouldBeEqual() throws Exception {
final Optional<String> something = Optional.of("something");
assertThat(something)
.isPresent()
.extractingValue()
.isEqualTo("something");
assertThat(something).isPresent().extractingValue().isEqualTo("something");
}
@Test
public void givenRange_whenVerifying_thenShouldBeCorrect() throws Exception {
final Range<String> range = Range.openClosed("a", "g");
assertThat(range)
.hasOpenedLowerBound()
.isNotEmpty()
.hasClosedUpperBound()
.contains("b");
assertThat(range).hasOpenedLowerBound().isNotEmpty().hasClosedUpperBound().contains("b");
}
@Test
@ -96,10 +80,7 @@ public class AssertJGuavaTest {
map.put(Range.closed(0, 60), "F");
map.put(Range.closed(61, 70), "D");
assertThat(map)
.isNotEmpty()
.containsKeys(0)
.contains(MapEntry.entry(34, "F"));
assertThat(map).isNotEmpty().containsKeys(0).contains(MapEntry.entry(34, "F"));
}
@Test
@ -109,13 +90,7 @@ public class AssertJGuavaTest {
table.put(1, "A", "PRESENT");
table.put(1, "B", "ABSENT");
assertThat(table)
.hasRowCount(1)
.containsValues("ABSENT")
.containsCell(1, "B", "ABSENT");
assertThat(table).hasRowCount(1).containsValues("ABSENT").containsCell(1, "B", "ABSENT");
}
}

50
assertj/src/test/java/com/baeldung/assertj/introduction/AssertJJava8Test.java
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@ -20,20 +20,14 @@ public class AssertJJava8Test {
public void givenOptional_shouldAssert() throws Exception {
final Optional<String> givenOptional = Optional.of("something");
assertThat(givenOptional)
.isPresent()
.hasValue("something");
assertThat(givenOptional).isPresent().hasValue("something");
}
@Test
public void givenPredicate_shouldAssert() throws Exception {
final Predicate<String> predicate = s -> s.length() > 4;
assertThat(predicate)
.accepts("aaaaa", "bbbbb")
.rejects("a", "b")
.acceptsAll(asList("aaaaa", "bbbbb"))
.rejectsAll(asList("a", "b"));
assertThat(predicate).accepts("aaaaa", "bbbbb").rejects("a", "b").acceptsAll(asList("aaaaa", "bbbbb")).rejectsAll(asList("a", "b"));
}
@Test
@ -41,74 +35,58 @@ public class AssertJJava8Test {
final LocalDate givenLocalDate = LocalDate.of(2016, 7, 8);
final LocalDate todayDate = LocalDate.now();
assertThat(givenLocalDate)
.isBefore(LocalDate.of(2020, 7, 8))
.isAfterOrEqualTo(LocalDate.of(1989, 7, 8));
assertThat(givenLocalDate).isBefore(LocalDate.of(2020, 7, 8)).isAfterOrEqualTo(LocalDate.of(1989, 7, 8));
assertThat(todayDate)
.isAfter(LocalDate.of(1989, 7, 8))
.isToday();
assertThat(todayDate).isAfter(LocalDate.of(1989, 7, 8)).isToday();
}
@Test
public void givenLocalDateTime_shouldAssert() throws Exception {
final LocalDateTime givenLocalDate = LocalDateTime.of(2016, 7, 8, 12, 0);
assertThat(givenLocalDate)
.isBefore(LocalDateTime.of(2020, 7, 8, 11, 2));
assertThat(givenLocalDate).isBefore(LocalDateTime.of(2020, 7, 8, 11, 2));
}
@Test
public void givenLocalTime_shouldAssert() throws Exception {
final LocalTime givenLocalTime = LocalTime.of(12, 15);
assertThat(givenLocalTime)
.isAfter(LocalTime.of(1, 0))
.hasSameHourAs(LocalTime.of(12, 0));
assertThat(givenLocalTime).isAfter(LocalTime.of(1, 0)).hasSameHourAs(LocalTime.of(12, 0));
}
@Test
public void givenList_shouldAssertFlatExtracting() throws Exception {
final List<LocalDate> givenList = asList(ofYearDay(2016, 5), ofYearDay(2015, 6));
assertThat(givenList)
.flatExtracting(LocalDate::getYear)
.contains(2015);
assertThat(givenList).flatExtracting(LocalDate::getYear).contains(2015);
}
@Test
public void givenList_shouldAssertFlatExtractingLeapYear() throws Exception {
final List<LocalDate> givenList = asList(ofYearDay(2016, 5), ofYearDay(2015, 6));
assertThat(givenList)
.flatExtracting(LocalDate::isLeapYear)
.contains(true);
assertThat(givenList).flatExtracting(LocalDate::isLeapYear).contains(true);
}
@Test
public void givenList_shouldAssertFlatExtractingClass() throws Exception {
final List<LocalDate> givenList = asList(ofYearDay(2016, 5), ofYearDay(2015, 6));
assertThat(givenList)
.flatExtracting(Object::getClass)
.contains(LocalDate.class);
assertThat(givenList).flatExtracting(Object::getClass).contains(LocalDate.class);
}
@Test
public void givenList_shouldAssertMultipleFlatExtracting() throws Exception {
final List<LocalDate> givenList = asList(ofYearDay(2016, 5), ofYearDay(2015, 6));
assertThat(givenList)
.flatExtracting(LocalDate::getYear, LocalDate::getDayOfMonth)
.contains(2015, 6);
assertThat(givenList).flatExtracting(LocalDate::getYear, LocalDate::getDayOfMonth).contains(2015, 6);
}
@Test
public void givenString_shouldSatisfy() throws Exception {
final String givenString = "someString";
assertThat(givenString)
.satisfies(s -> {
assertThat(givenString).satisfies(s -> {
assertThat(s).isNotEmpty();
assertThat(s).hasSize(10);
});
@ -118,15 +96,13 @@ public class AssertJJava8Test {
public void givenString_shouldMatch() throws Exception {
final String emptyString = "";
assertThat(emptyString)
.matches(String::isEmpty);
assertThat(emptyString).matches(String::isEmpty);
}
@Test
public void givenList_shouldHasOnlyOneElementSatisfying() throws Exception {
final List<String> givenList = Arrays.asList("");
assertThat(givenList)
.hasOnlyOneElementSatisfying(s -> assertThat(s).isEmpty());
assertThat(givenList).hasOnlyOneElementSatisfying(s -> assertThat(s).isEmpty());
}
}

9
autovalue/src/main/java/com/baeldung/autovalue/ImmutableMoney.java
View File

@ -1,18 +1,20 @@
package com.baeldung.autovalue;
public final class ImmutableMoney {
private final long amount;
private final String currency;
public ImmutableMoney(long amount, String currency) {
this.amount = amount;
this.currency = currency;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + (int) (amount ^ (amount >>> 32));
result = prime * result
+ ((currency == null) ? 0 : currency.hashCode());
result = prime * result + ((currency == null) ? 0 : currency.hashCode());
return result;
}
@ -45,8 +47,7 @@ public final class ImmutableMoney {
@Override
public String toString() {
return "ImmutableMoney [amount=" + amount + ", currency=" + currency
+ "]";
return "ImmutableMoney [amount=" + amount + ", currency=" + currency + "]";
}
}

3
autovalue/src/main/java/com/baeldung/autovalue/MutableMoney.java
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@ -3,8 +3,7 @@ package com.baeldung.autovalue;
public class MutableMoney {
@Override
public String toString() {
return "MutableMoney [amount=" + amount + ", currency=" + currency
+ "]";
return "MutableMoney [amount=" + amount + ", currency=" + currency + "]";
}
public long getAmount() {

4
autovalue/src/test/java/com/baeldung/autovalue/MoneyUnitTest.java
View File

@ -32,24 +32,28 @@ public class MoneyUnitTest {
AutoValueMoney m2 = AutoValueMoney.create("USD", 5000);
assertTrue(m1.equals(m2));
}
@Test
public void given2DifferentValueTypesWithAutoValue_whenNotEqual_thenCorrect() {
AutoValueMoney m1 = AutoValueMoney.create("GBP", 5000);
AutoValueMoney m2 = AutoValueMoney.create("USD", 5000);
assertFalse(m1.equals(m2));
}
@Test
public void given2EqualValueTypesWithBuilder_whenEqual_thenCorrect() {
AutoValueMoneyWithBuilder m1 = AutoValueMoneyWithBuilder.builder().setAmount(5000).setCurrency("USD").build();
AutoValueMoneyWithBuilder m2 = AutoValueMoneyWithBuilder.builder().setAmount(5000).setCurrency("USD").build();
assertTrue(m1.equals(m2));
}
@Test
public void given2DifferentValueTypesBuilder_whenNotEqual_thenCorrect() {
AutoValueMoneyWithBuilder m1 = AutoValueMoneyWithBuilder.builder().setAmount(5000).setCurrency("USD").build();
AutoValueMoneyWithBuilder m2 = AutoValueMoneyWithBuilder.builder().setAmount(5000).setCurrency("GBP").build();
assertFalse(m1.equals(m2));
}
@Test
public void givenValueTypeWithBuilder_whenFieldsCorrectlySet_thenCorrect() {
AutoValueMoneyWithBuilder m = AutoValueMoneyWithBuilder.builder().setAmount(5000).setCurrency("USD").build();

1
core-java-9/src/main/java/com/baeldung/java9/process/ProcessUtils.java
View File

@ -8,7 +8,6 @@ import java.time.Duration;
import java.time.Instant;
import java.util.stream.Stream;
public class ProcessUtils {
public static String getClassPath() {

1
core-java-9/src/main/java/com/baeldung/java9/process/ServiceMain.java
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@ -8,7 +8,6 @@ public class ServiceMain {
ProcessHandle thisProcess = ProcessHandle.current();
long pid = thisProcess.getPid();
Optional<String[]> opArgs = Optional.ofNullable(args);
String procName = opArgs.map(str -> str.length > 0 ? str[0] : null).orElse(System.getProperty("sun.java.command"));

17
core-java-9/src/test/java/com/baeldung/java9/Java9OptionalsStreamTest.java
View File

@ -19,10 +19,7 @@ public class Java9OptionalsStreamTest {
public void filterOutPresentOptionalsWithFilter() {
assertEquals(4, listOfOptionals.size());
List<String> filteredList = listOfOptionals.stream()
.filter(Optional::isPresent)
.map(Optional::get)
.collect(Collectors.toList());
List<String> filteredList = listOfOptionals.stream().filter(Optional::isPresent).map(Optional::get).collect(Collectors.toList());
assertEquals(2, filteredList.size());
assertEquals("foo", filteredList.get(0));
@ -33,9 +30,7 @@ public class Java9OptionalsStreamTest {
public void filterOutPresentOptionalsWithFlatMap() {
assertEquals(4, listOfOptionals.size());
List<String> filteredList = listOfOptionals.stream()
.flatMap(o -> o.isPresent() ? Stream.of(o.get()) : Stream.empty())
.collect(Collectors.toList());
List<String> filteredList = listOfOptionals.stream().flatMap(o -> o.isPresent() ? Stream.of(o.get()) : Stream.empty()).collect(Collectors.toList());
assertEquals(2, filteredList.size());
assertEquals("foo", filteredList.get(0));
@ -46,9 +41,7 @@ public class Java9OptionalsStreamTest {
public void filterOutPresentOptionalsWithFlatMap2() {
assertEquals(4, listOfOptionals.size());
List<String> filteredList = listOfOptionals.stream()
.flatMap(o -> o.map(Stream::of).orElseGet(Stream::empty))
.collect(Collectors.toList());
List<String> filteredList = listOfOptionals.stream().flatMap(o -> o.map(Stream::of).orElseGet(Stream::empty)).collect(Collectors.toList());
assertEquals(2, filteredList.size());
assertEquals("foo", filteredList.get(0));
@ -59,9 +52,7 @@ public class Java9OptionalsStreamTest {
public void filterOutPresentOptionalsWithJava9() {
assertEquals(4, listOfOptionals.size());
List<String> filteredList = listOfOptionals.stream()
.flatMap(Optional::stream)
.collect(Collectors.toList());
List<String> filteredList = listOfOptionals.stream().flatMap(Optional::stream).collect(Collectors.toList());
assertEquals(2, filteredList.size());
assertEquals("foo", filteredList.get(0));

5
core-java-9/src/test/java/com/baeldung/java9/MultiResultionImageTest.java
View File

@ -13,7 +13,6 @@ import org.junit.Test;
public class MultiResultionImageTest {
@Test
public void baseMultiResImageTest() {
int baseIndex = 1;
@ -38,10 +37,8 @@ public class MultiResultionImageTest {
return 8 * (i + 1);
}
private static BufferedImage createImage(int i) {
return new BufferedImage(getSize(i), getSize(i),
BufferedImage.TYPE_INT_RGB);
return new BufferedImage(getSize(i), getSize(i), BufferedImage.TYPE_INT_RGB);
}
}

6
core-java-9/src/test/java/com/baeldung/java9/httpclient/SimpleHttpRequestsTest.java
View File

@ -1,7 +1,5 @@
package com.baeldung.java9.httpclient;
import static java.net.HttpURLConnection.HTTP_OK;
import static org.junit.Assert.assertTrue;
@ -117,7 +115,9 @@ public class SimpleHttpRequestsTest {
sb.append(k).append(":");
List<String> l = hMap.get(k);
if (l != null) {
l.forEach( s -> { sb.append(s).append(","); } );
l.forEach(s -> {
sb.append(s).append(",");
});
}
sb.append("\n");
}

3
core-java-9/src/test/java/com/baeldung/java9/language/TryWithResourcesTest.java
View File

@ -57,7 +57,6 @@ public class TryWithResourcesTest {
assertEquals("Expected and Actual does not match", 5, closeCount);
}
static class CloseableException extends Exception implements AutoCloseable {
@Override
public void close() {
@ -66,5 +65,3 @@ public class TryWithResourcesTest {
}
}

61
core-java-9/src/test/java/com/baeldung/java9/language/stream/CollectorImprovementTest.java Normal file
View File

@ -0,0 +1,61 @@
package com.baeldung.java9.language.stream;
import org.junit.Test;
import java.util.*;
import java.util.stream.Collectors;
import java.util.function.Function;
import static org.junit.Assert.assertEquals;
public class CollectorImprovementTest {
@Test
public void givenList_whenSatifyPredicate_thenMapValueWithOccurences() {
List<Integer> numbers = List.of(1, 2, 3, 5, 5);
Map<Integer, Long> result = numbers.stream().filter(val -> val > 3).collect(Collectors.groupingBy(Function.identity(), Collectors.counting()));
assertEquals(1, result.size());
result = numbers.stream().collect(Collectors.groupingBy(Function.identity(), Collectors.filtering(val -> val > 3, Collectors.counting())));
assertEquals(4, result.size());
}
@Test
public void givenListOfBlogs_whenAuthorName_thenMapAuthorWithComments() {
Blog blog1 = new Blog("1", "Nice", "Very Nice");
Blog blog2 = new Blog("2", "Disappointing", "Ok", "Could be better");
List<Blog> blogs = List.of(blog1, blog2);
Map<String, List<List<String>>> authorComments1 = blogs.stream().collect(Collectors.groupingBy(Blog::getAuthorName, Collectors.mapping(Blog::getComments, Collectors.toList())));
assertEquals(2, authorComments1.size());
assertEquals(2, authorComments1.get("1").get(0).size());
assertEquals(3, authorComments1.get("2").get(0).size());
Map<String, List<String>> authorComments2 = blogs.stream().collect(Collectors.groupingBy(Blog::getAuthorName, Collectors.flatMapping(blog -> blog.getComments().stream(), Collectors.toList())));
assertEquals(2, authorComments2.size());
assertEquals(2, authorComments2.get("1").size());
assertEquals(3, authorComments2.get("2").size());
}
}
class Blog {
private String authorName;
private List<String> comments;
public Blog(String authorName, String... comments) {
this.authorName = authorName;
this.comments = List.of(comments);
}
public String getAuthorName() {
return this.authorName;
}
public List<String> getComments() {
return this.comments;
}
}

26
core-java-9/src/test/java/com/baeldung/java9/language/stream/StreamFeaturesTest.java
View File

@ -17,16 +17,11 @@ public class StreamFeaturesTest {
public static class TakeAndDropWhileTest {
public Stream<String> getStreamAfterTakeWhileOperation() {
return Stream
.iterate("", s -> s + "s")
.takeWhile(s -> s.length() < 10);
return Stream.iterate("", s -> s + "s").takeWhile(s -> s.length() < 10);
}
public Stream<String> getStreamAfterDropWhileOperation() {
return Stream
.iterate("", s -> s + "s")
.takeWhile(s -> s.length() < 10)
.dropWhile(s -> !s.contains("sssss"));
return Stream.iterate("", s -> s + "s").takeWhile(s -> s.length() < 10).dropWhile(s -> !s.contains("sssss"));
}
@Test
@ -75,19 +70,19 @@ public class StreamFeaturesTest {
public static class OfNullableTest {
private List<String> collection = Arrays.asList("A", "B", "C");
private Map<String, Integer> map = new HashMap<>() {{
private Map<String, Integer> map = new HashMap<>() {
{
put("A", 10);
put("C", 30);
}};
}
};
private Stream<Integer> getStreamWithOfNullable() {
return collection.stream()
.flatMap(s -> Stream.ofNullable(map.get(s)));
return collection.stream().flatMap(s -> Stream.ofNullable(map.get(s)));
}
private Stream<Integer> getStream() {
return collection.stream()
.flatMap(s -> {
return collection.stream().flatMap(s -> {
Integer temp = map.get(s);
return temp != null ? Stream.of(temp) : Stream.empty();
});
@ -107,10 +102,7 @@ public class StreamFeaturesTest {
@Test
public void testOfNullable() {
assertEquals(
testOfNullableFrom(getStream()),
testOfNullableFrom(getStreamWithOfNullable())
);
assertEquals(testOfNullableFrom(getStream()), testOfNullableFrom(getStreamWithOfNullable()));
}

1
core-java-9/src/test/java/com/baeldung/java9/process/ProcessApi.java
View File

@ -22,7 +22,6 @@ import static org.junit.Assert.assertTrue;
public class ProcessApi {
@Before
public void init() {

3
core-java/src/main/java/com/baeldung/algorithms/RunAlgorithm.java
View File

@ -15,8 +15,7 @@ public class RunAlgorithm {
int decision = in.nextInt();
switch (decision) {
case 1:
System.out.println(
"Optimized distance for travel: " + SimulatedAnnealing.simulateAnnealing(10, 10000, 0.9995));
System.out.println("Optimized distance for travel: " + SimulatedAnnealing.simulateAnnealing(10, 10000, 0.9995));
break;
case 2:
SlopeOne.slopeOne(3);

3
core-java/src/main/java/com/baeldung/algorithms/slope_one/InputData.java
View File

@ -12,8 +12,7 @@ import lombok.Data;
@Data
public class InputData {
protected static List<Item> items = Arrays.asList(new Item("Candy"), new Item("Drink"), new Item("Soda"), new Item("Popcorn"),
new Item("Snacks"));
protected static List<Item> items = Arrays.asList(new Item("Candy"), new Item("Drink"), new Item("Soda"), new Item("Popcorn"), new Item("Snacks"));
public static Map<User, HashMap<Item, Double>> initializeData(int numberOfUsers) {
Map<User, HashMap<Item, Double>> data = new HashMap<>();

9
core-java/src/main/java/com/baeldung/chainedexception/LogWithChain.java
View File

@ -23,8 +23,7 @@ public class LogWithChain {
try {
howIsManager();
} catch (ManagerUpsetException e) {
throw new TeamLeadUpsetException(
"Team lead is not in good mood", e);
throw new TeamLeadUpsetException("Team lead is not in good mood", e);
}
}
@ -36,9 +35,7 @@ public class LogWithChain {
}
}
private static void howIsGirlFriendOfManager()
throws GirlFriendOfManagerUpsetException {
throw new GirlFriendOfManagerUpsetException(
"Girl friend of manager is in bad mood");
private static void howIsGirlFriendOfManager() throws GirlFriendOfManagerUpsetException {
throw new GirlFriendOfManagerUpsetException("Girl friend of manager is in bad mood");
}
}

9
core-java/src/main/java/com/baeldung/chainedexception/LogWithoutChain.java
View File

@ -25,8 +25,7 @@ public class LogWithoutChain {
howIsManager();
} catch (ManagerUpsetException e) {
e.printStackTrace();
throw new TeamLeadUpsetException(
"Team lead is not in good mood");
throw new TeamLeadUpsetException("Team lead is not in good mood");
}
}
@ -39,9 +38,7 @@ public class LogWithoutChain {
}
}
private static void howIsGirlFriendOfManager()
throws GirlFriendOfManagerUpsetException {
throw new GirlFriendOfManagerUpsetException(
"Girl friend of manager is in bad mood");
private static void howIsGirlFriendOfManager() throws GirlFriendOfManagerUpsetException {
throw new GirlFriendOfManagerUpsetException("Girl friend of manager is in bad mood");
}
}

24
core-java/src/main/java/com/baeldung/concurrent/blockingqueue/BlockingQueueUsage.java Normal file
View File

@ -0,0 +1,24 @@
package com.baeldung.concurrent.blockingqueue;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingQueue;
public class BlockingQueueUsage {
public static void main(String[] args) {
int BOUND = 10;
int N_PRODUCERS = 4;
int N_CONSUMERS = Runtime.getRuntime().availableProcessors();
int poisonPill = Integer.MAX_VALUE;
int poisonPillPerProducer = N_CONSUMERS / N_PRODUCERS;
BlockingQueue<Integer> queue = new LinkedBlockingQueue<>(BOUND);
for (int i = 0; i < N_PRODUCERS; i++) {
new Thread(new NumbersProducer(queue, poisonPill, poisonPillPerProducer)).start();
}
for (int j = 0; j < N_CONSUMERS; j++) {
new Thread(new NumbersConsumer(queue, poisonPill)).start();
}
}
}

28
core-java/src/main/java/com/baeldung/concurrent/blockingqueue/NumbersConsumer.java Normal file
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@ -0,0 +1,28 @@
package com.baeldung.concurrent.blockingqueue;
import java.util.concurrent.BlockingQueue;
public class NumbersConsumer implements Runnable {
private final BlockingQueue<Integer> queue;
private final int poisonPill;
public NumbersConsumer(BlockingQueue<Integer> queue, int poisonPill) {
this.queue = queue;
this.poisonPill = poisonPill;
}
public void run() {
try {
while (true) {
Integer number = queue.take();
if (number.equals(poisonPill)) {
return;
}
String result = number.toString();
System.out.println(Thread.currentThread().getName() + " result: " + result);
}
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
}

34
core-java/src/main/java/com/baeldung/concurrent/blockingqueue/NumbersProducer.java Normal file
View File

@ -0,0 +1,34 @@
package com.baeldung.concurrent.blockingqueue;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.ThreadLocalRandom;
public class NumbersProducer implements Runnable {
private final BlockingQueue<Integer> numbersQueue;
private final int poisonPill;
private final int poisonPillPerProducer;
public NumbersProducer(BlockingQueue<Integer> numbersQueue, int poisonPill, int poisonPillPerProducer) {
this.numbersQueue = numbersQueue;
this.poisonPill = poisonPill;
this.poisonPillPerProducer = poisonPillPerProducer;
}
public void run() {
try {
generateNumbers();
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
private void generateNumbers() throws InterruptedException {
for (int i = 0; i < 100; i++) {
numbersQueue.put(ThreadLocalRandom.current().nextInt(100));
}
for (int j = 0; j < poisonPillPerProducer; j++) {
numbersQueue.put(poisonPill);
}
}
}

23
core-java/src/main/java/com/baeldung/concurrent/countdownlatch/BrokenWorker.java Normal file
View File

@ -0,0 +1,23 @@
package com.baeldung.concurrent.countdownlatch;
import java.util.List;
import java.util.concurrent.CountDownLatch;
public class BrokenWorker implements Runnable {
private final List<String> outputScraper;
private final CountDownLatch countDownLatch;
public BrokenWorker(final List<String> outputScraper, final CountDownLatch countDownLatch) {
this.outputScraper = outputScraper;
this.countDownLatch = countDownLatch;
}
@Override
public void run() {
if (true) {
throw new RuntimeException("Oh dear");
}
countDownLatch.countDown();
outputScraper.add("Counted down");
}
}

34
core-java/src/main/java/com/baeldung/concurrent/countdownlatch/WaitingWorker.java Normal file
View File

@ -0,0 +1,34 @@
package com.baeldung.concurrent.countdownlatch;
import java.util.List;
import java.util.concurrent.CountDownLatch;
public class WaitingWorker implements Runnable {
private final List<String> outputScraper;
private final CountDownLatch readyThreadCounter;
private final CountDownLatch callingThreadBlocker;
private final CountDownLatch completedThreadCounter;
public WaitingWorker(final List<String> outputScraper, final CountDownLatch readyThreadCounter, final CountDownLatch callingThreadBlocker, CountDownLatch completedThreadCounter) {
this.outputScraper = outputScraper;
this.readyThreadCounter = readyThreadCounter;
this.callingThreadBlocker = callingThreadBlocker;
this.completedThreadCounter = completedThreadCounter;
}
@Override
public void run() {
// Mark this thread as read / started
readyThreadCounter.countDown();
try {
callingThreadBlocker.await();
outputScraper.add("Counted down");
} catch (InterruptedException e) {
e.printStackTrace();
} finally {
completedThreadCounter.countDown();
}
}
}

22
core-java/src/main/java/com/baeldung/concurrent/countdownlatch/Worker.java Normal file
View File

@ -0,0 +1,22 @@
package com.baeldung.concurrent.countdownlatch;
import java.util.List;
import java.util.concurrent.CountDownLatch;
public class Worker implements Runnable {
private final List<String> outputScraper;
private final CountDownLatch countDownLatch;
public Worker(final List<String> outputScraper, final CountDownLatch countDownLatch) {
this.outputScraper = outputScraper;
this.countDownLatch = countDownLatch;
}
@Override
public void run() {
// Do some work
System.out.println("Doing some logic");
outputScraper.add("Counted down");
countDownLatch.countDown();
}
}

26
core-java/src/main/java/com/baeldung/concurrent/future/FactorialSquareCalculator.java Normal file
View File

@ -0,0 +1,26 @@
package com.baeldung.concurrent.future;
import java.util.concurrent.RecursiveTask;
public class FactorialSquareCalculator extends RecursiveTask<Integer> {
private static final long serialVersionUID = 1L;
final private Integer n;
public FactorialSquareCalculator(Integer n) {
this.n = n;
}
@Override
protected Integer compute() {
if (n <= 1) {
return n;
}
FactorialSquareCalculator calculator = new FactorialSquareCalculator(n - 1);
calculator.fork();
return n * n + calculator.join();
}
}

24
core-java/src/main/java/com/baeldung/concurrent/future/SquareCalculator.java Normal file
View File

@ -0,0 +1,24 @@
package com.baeldung.concurrent.future;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;
public class SquareCalculator {
private final ExecutorService executor;
public SquareCalculator(ExecutorService executor) {
this.executor = executor;
}
public Future<Integer> calculate(Integer input) {
return executor.submit(new Callable<Integer>() {
@Override
public Integer call() throws Exception {
Thread.sleep(1000);
return input * input;
}
});
}
}

2
core-java/src/main/java/com/baeldung/java/map/MyLinkedHashMap.java
View File

@ -11,12 +11,10 @@ public class MyLinkedHashMap<K, V> extends LinkedHashMap<K, V> {
private static final long serialVersionUID = 1L;
private static final int MAX_ENTRIES = 5;
public MyLinkedHashMap(int initialCapacity, float loadFactor, boolean accessOrder) {
super(initialCapacity, loadFactor, accessOrder);
}
@Override
protected boolean removeEldestEntry(Map.Entry eldest) {
return size() > MAX_ENTRIES;

110
core-java/src/test/java/com/baeldung/collectors/Java8CollectorsUnitTest.java
View File

@ -42,116 +42,80 @@ public class Java8CollectorsUnitTest {
@Test
public void whenCollectingToList_shouldCollectToList() throws Exception {
final List<String> result = givenList
.stream()
.collect(toList());
final List<String> result = givenList.stream().collect(toList());
assertThat(result).containsAll(givenList);
}
@Test
public void whenCollectingToList_shouldCollectToSet() throws Exception {
final Set<String> result = givenList
.stream()
.collect(toSet());
final Set<String> result = givenList.stream().collect(toSet());
assertThat(result).containsAll(givenList);
}
@Test
public void whenCollectingToCollection_shouldCollectToCollection() throws Exception {
final List<String> result = givenList
.stream()
.collect(toCollection(LinkedList::new));
final List<String> result = givenList.stream().collect(toCollection(LinkedList::new));
assertThat(result)
.containsAll(givenList)
.isInstanceOf(LinkedList.class);
assertThat(result).containsAll(givenList).isInstanceOf(LinkedList.class);
}
@Test
public void whenCollectingToImmutableCollection_shouldThrowException() throws Exception {
assertThatThrownBy(() -> {
givenList
.stream()
.collect(toCollection(ImmutableList::of));
givenList.stream().collect(toCollection(ImmutableList::of));
}).isInstanceOf(UnsupportedOperationException.class);
}
@Test
public void whenCollectingToMap_shouldCollectToMap() throws Exception {
final Map<String, Integer> result = givenList
.stream()
.collect(toMap(Function.identity(), String::length));
final Map<String, Integer> result = givenList.stream().collect(toMap(Function.identity(), String::length));
assertThat(result)
.containsEntry("a", 1)
.containsEntry("bb", 2)
.containsEntry("ccc", 3)
.containsEntry("dd", 2);
assertThat(result).containsEntry("a", 1).containsEntry("bb", 2).containsEntry("ccc", 3).containsEntry("dd", 2);
}
@Test
public void whenCollectingToMap_shouldCollectToMapMerging() throws Exception {
final Map<String, Integer> result = givenList
.stream()
.collect(toMap(Function.identity(), String::length, (i1, i2) -> i1));
final Map<String, Integer> result = givenList.stream().collect(toMap(Function.identity(), String::length, (i1, i2) -> i1));
assertThat(result)
.containsEntry("a", 1)
.containsEntry("bb", 2)
.containsEntry("ccc", 3)
.containsEntry("dd", 2);
assertThat(result).containsEntry("a", 1).containsEntry("bb", 2).containsEntry("ccc", 3).containsEntry("dd", 2);
}
@Test
public void whenCollectingAndThen_shouldCollect() throws Exception {
final List<String> result = givenList
.stream()
.collect(collectingAndThen(toList(), ImmutableList::copyOf));
final List<String> result = givenList.stream().collect(collectingAndThen(toList(), ImmutableList::copyOf));
assertThat(result)
.containsAll(givenList)
.isInstanceOf(ImmutableList.class);
assertThat(result).containsAll(givenList).isInstanceOf(ImmutableList.class);
}
@Test
public void whenJoining_shouldJoin() throws Exception {
final String result = givenList
.stream()
.collect(joining());
final String result = givenList.stream().collect(joining());
assertThat(result).isEqualTo("abbcccdd");
}
@Test
public void whenJoiningWithSeparator_shouldJoinWithSeparator() throws Exception {
final String result = givenList
.stream()
.collect(joining(" "));
final String result = givenList.stream().collect(joining(" "));
assertThat(result).isEqualTo("a bb ccc dd");
}
@Test
public void whenJoiningWithSeparatorAndPrefixAndPostfix_shouldJoinWithSeparatorPrePost() throws Exception {
final String result = givenList
.stream()
.collect(joining(" ", "PRE-", "-POST"));
final String result = givenList.stream().collect(joining(" ", "PRE-", "-POST"));
assertThat(result).isEqualTo("PRE-a bb ccc dd-POST");
}
@Test
public void whenPartitioningBy_shouldPartition() throws Exception {
final Map<Boolean, List<String>> result = givenList
.stream()
.collect(partitioningBy(s -> s.length() > 2));
final Map<Boolean, List<String>> result = givenList.stream().collect(partitioningBy(s -> s.length() > 2));
assertThat(result)
.containsKeys(true, false)
.satisfies(booleanListMap -> {
assertThat(result).containsKeys(true, false).satisfies(booleanListMap -> {
assertThat(booleanListMap.get(true)).contains("ccc");
assertThat(booleanListMap.get(false)).contains("a", "bb", "dd");
@ -160,18 +124,14 @@ public class Java8CollectorsUnitTest {
@Test
public void whenCounting_shouldCount() throws Exception {
final Long result = givenList
.stream()
.collect(counting());
final Long result = givenList.stream().collect(counting());
assertThat(result).isEqualTo(4);
}
@Test
public void whenSummarizing_shouldSummarize() throws Exception {
final DoubleSummaryStatistics result = givenList
.stream()
.collect(summarizingDouble(String::length));
final DoubleSummaryStatistics result = givenList.stream().collect(summarizingDouble(String::length));
assertThat(result.getAverage()).isEqualTo(2);
assertThat(result.getCount()).isEqualTo(4);
@ -182,55 +142,37 @@ public class Java8CollectorsUnitTest {
@Test
public void whenAveraging_shouldAverage() throws Exception {
final Double result = givenList
.stream()
.collect(averagingDouble(String::length));
final Double result = givenList.stream().collect(averagingDouble(String::length));
assertThat(result).isEqualTo(2);
}
@Test
public void whenSumming_shouldSum() throws Exception {
final Double result = givenList
.stream()
.filter(i -> true)
.collect(summingDouble(String::length));
final Double result = givenList.stream().filter(i -> true).collect(summingDouble(String::length));
assertThat(result).isEqualTo(8);
}
@Test
public void whenMaxingBy_shouldMaxBy() throws Exception {
final Optional<String> result = givenList
.stream()
.collect(maxBy(Comparator.naturalOrder()));
final Optional<String> result = givenList.stream().collect(maxBy(Comparator.naturalOrder()));
assertThat(result)
.isPresent()
.hasValue("dd");
assertThat(result).isPresent().hasValue("dd");
}
@Test
public void whenGroupingBy_shouldGroupBy() throws Exception {
final Map<Integer, Set<String>> result = givenList
.stream()
.collect(groupingBy(String::length, toSet()));
final Map<Integer, Set<String>> result = givenList.stream().collect(groupingBy(String::length, toSet()));
assertThat(result)
.containsEntry(1, newHashSet("a"))
.containsEntry(2, newHashSet("bb", "dd"))
.containsEntry(3, newHashSet("ccc"));
assertThat(result).containsEntry(1, newHashSet("a")).containsEntry(2, newHashSet("bb", "dd")).containsEntry(3, newHashSet("ccc"));
}
@Test
public void whenCreatingCustomCollector_shouldCollect() throws Exception {
final ImmutableSet<String> result = givenList
.stream()
.collect(toImmutableSet());
final ImmutableSet<String> result = givenList.stream().collect(toImmutableSet());
assertThat(result)
.isInstanceOf(ImmutableSet.class)
.contains("a", "bb", "ccc", "dd");
assertThat(result).isInstanceOf(ImmutableSet.class).contains("a", "bb", "ccc", "dd");
}

70
core-java/src/test/java/com/baeldung/concurrent/countdownlatch/CountdownLatchExampleTest.java Normal file
View File

@ -0,0 +1,70 @@
package com.baeldung.concurrent.countdownlatch;
import org.junit.Test;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.stream.Stream;
import static java.util.stream.Collectors.toList;
import static org.assertj.core.api.Assertions.assertThat;
public class CountdownLatchExampleTest {
@Test
public void whenParallelProcessing_thenMainThreadWillBlockUntilCompletion() throws InterruptedException {
// Given
List<String> outputScraper = Collections.synchronizedList(new ArrayList<>());
CountDownLatch countDownLatch = new CountDownLatch(5);
List<Thread> workers = Stream.generate(() -> new Thread(new Worker(outputScraper, countDownLatch))).limit(5).collect(toList());
// When
workers.forEach(Thread::start);
countDownLatch.await(); // Block until workers finish
outputScraper.add("Latch released");
// Then
outputScraper.forEach(Object::toString);
assertThat(outputScraper).containsExactly("Counted down", "Counted down", "Counted down", "Counted down", "Counted down", "Latch released");
}
@Test
public void whenFailingToParallelProcess_thenMainThreadShouldTimeout() throws InterruptedException {
// Given
List<String> outputScraper = Collections.synchronizedList(new ArrayList<>());
CountDownLatch countDownLatch = new CountDownLatch(5);
List<Thread> workers = Stream.generate(() -> new Thread(new BrokenWorker(outputScraper, countDownLatch))).limit(5).collect(toList());
// When
workers.forEach(Thread::start);
final boolean result = countDownLatch.await(3L, TimeUnit.SECONDS);
// Then
assertThat(result).isFalse();
}
@Test
public void whenDoingLotsOfThreadsInParallel_thenStartThemAtTheSameTime() throws InterruptedException {
// Given
List<String> outputScraper = Collections.synchronizedList(new ArrayList<>());
CountDownLatch readyThreadCounter = new CountDownLatch(5);
CountDownLatch callingThreadBlocker = new CountDownLatch(1);
CountDownLatch completedThreadCounter = new CountDownLatch(5);
List<Thread> workers = Stream.generate(() -> new Thread(new WaitingWorker(outputScraper, readyThreadCounter, callingThreadBlocker, completedThreadCounter))).limit(5).collect(toList());
// When
workers.forEach(Thread::start);
readyThreadCounter.await(); // Block until workers start
outputScraper.add("Workers ready");
callingThreadBlocker.countDown(); // Start workers
completedThreadCounter.await(); // Block until workers finish
outputScraper.add("Workers complete");
// Then
outputScraper.forEach(Object::toString);
assertThat(outputScraper).containsExactly("Workers ready", "Counted down", "Counted down", "Counted down", "Counted down", "Counted down", "Workers complete");
}
}

22
core-java/src/test/java/com/baeldung/concurrent/future/FactorialSquareCalculatorUnitTest.java Normal file
View File

@ -0,0 +1,22 @@
package com.baeldung.concurrent.future;
import static org.junit.Assert.assertEquals;
import java.util.concurrent.ForkJoinPool;
import org.junit.Test;
public class FactorialSquareCalculatorUnitTest {
@Test
public void whenCalculatesFactorialSquare_thenReturnCorrectValue() {
ForkJoinPool forkJoinPool = new ForkJoinPool();
FactorialSquareCalculator calculator = new FactorialSquareCalculator(10);
forkJoinPool.execute(calculator);
assertEquals("The sum of the squares from 1 to 10 is 385", 385, calculator.join().intValue());
}
}

94
core-java/src/test/java/com/baeldung/concurrent/future/SquareCalculatorUnitTest.java Normal file
View File

@ -0,0 +1,94 @@
package com.baeldung.concurrent.future;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import java.util.concurrent.CancellationException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TestName;
public class SquareCalculatorUnitTest {
@Rule
public TestName name = new TestName();
private long start;
private SquareCalculator squareCalculator;
@Test
public void givenExecutorIsSingleThreaded_whenTwoExecutionsAreTriggered_thenRunInSequence() throws InterruptedException, ExecutionException {
squareCalculator = new SquareCalculator(Executors.newSingleThreadExecutor());
Future<Integer> result1 = squareCalculator.calculate(4);
Future<Integer> result2 = squareCalculator.calculate(1000);
while (!result1.isDone() || !result2.isDone()) {
System.out.println(String.format("Task 1 is %s and Task 2 is %s.", result1.isDone() ? "done" : "not done", result2.isDone() ? "done" : "not done"));
Thread.sleep(300);
}
assertEquals(16, result1.get().intValue());
assertEquals(1000000, result2.get().intValue());
}
@Test(expected = TimeoutException.class)
public void whenGetWithTimeoutLowerThanExecutionTime_thenThrowException() throws InterruptedException, ExecutionException, TimeoutException {
squareCalculator = new SquareCalculator(Executors.newSingleThreadExecutor());
Future<Integer> result = squareCalculator.calculate(4);
result.get(500, TimeUnit.MILLISECONDS);
}
@Test
public void givenExecutorIsMultiThreaded_whenTwoExecutionsAreTriggered_thenRunInParallel() throws InterruptedException, ExecutionException {
squareCalculator = new SquareCalculator(Executors.newFixedThreadPool(2));
Future<Integer> result1 = squareCalculator.calculate(4);
Future<Integer> result2 = squareCalculator.calculate(1000);
while (!result1.isDone() || !result2.isDone()) {
System.out.println(String.format("Task 1 is %s and Task 2 is %s.", result1.isDone() ? "done" : "not done", result2.isDone() ? "done" : "not done"));
Thread.sleep(300);
}
assertEquals(16, result1.get().intValue());
assertEquals(1000000, result2.get().intValue());
}
@Test(expected = CancellationException.class)
public void whenCancelFutureAndCallGet_thenThrowException() throws InterruptedException, ExecutionException, TimeoutException {
squareCalculator = new SquareCalculator(Executors.newSingleThreadExecutor());
Future<Integer> result = squareCalculator.calculate(4);
boolean canceled = result.cancel(true);
assertTrue("Future was canceled", canceled);
assertTrue("Future was canceled", result.isCancelled());
result.get();
}
@Before
public void start() {
start = System.currentTimeMillis();
}
@After
public void end() {
System.out.println(String.format("Test %s took %s ms \n", name.getMethodName(), System.currentTimeMillis() - start));
}
}

76
core-java/src/test/java/com/baeldung/java/concurrentmap/ConcurrentMapAggregateStatusTest.java Normal file
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@ -0,0 +1,76 @@
package com.baeldung.java.concurrentmap;
import org.junit.Before;
import org.junit.Test;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotEquals;
public class ConcurrentMapAggregateStatusTest {
private ExecutorService executorService;
private Map<String, Integer> concurrentMap;
private List<Integer> mapSizes;
private int MAX_SIZE = 100000;
@Before
public void init() {
executorService = Executors.newFixedThreadPool(2);
concurrentMap = new ConcurrentHashMap<>();
mapSizes = new ArrayList<>(MAX_SIZE);
}
@Test
public void givenConcurrentMap_whenSizeWithoutConcurrentUpdates_thenCorrect() throws InterruptedException {
Runnable collectMapSizes = () -> {
for (int i = 0; i < MAX_SIZE; i++) {
concurrentMap.put(String.valueOf(i), i);
mapSizes.add(concurrentMap.size());
}
};
Runnable retrieveMapData = () -> {
for (int i = 0; i < MAX_SIZE; i++) {
concurrentMap.get(String.valueOf(i));
}
};
executorService.execute(retrieveMapData);
executorService.execute(collectMapSizes);
executorService.shutdown();
executorService.awaitTermination(1, TimeUnit.MINUTES);
for (int i = 1; i <= MAX_SIZE; i++) {
assertEquals("map size should be consistently reliable", i, mapSizes.get(i - 1).intValue());
}
assertEquals(MAX_SIZE, concurrentMap.size());
}
@Test
public void givenConcurrentMap_whenUpdatingAndGetSize_thenError() throws InterruptedException {
Runnable collectMapSizes = () -> {
for (int i = 0; i < MAX_SIZE; i++) {
mapSizes.add(concurrentMap.size());
}
};
Runnable updateMapData = () -> {
for (int i = 0; i < MAX_SIZE; i++) {
concurrentMap.put(String.valueOf(i), i);
}
};
executorService.execute(updateMapData);
executorService.execute(collectMapSizes);
executorService.shutdown();
executorService.awaitTermination(1, TimeUnit.MINUTES);
assertNotEquals("map size collected with concurrent updates not reliable", MAX_SIZE, mapSizes.get(MAX_SIZE - 1).intValue());
assertEquals(MAX_SIZE, concurrentMap.size());
}
}

160
core-java/src/test/java/com/baeldung/java/concurrentmap/ConcurrentMapNullKeyValueTest.java Normal file
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@ -0,0 +1,160 @@
package com.baeldung.java.concurrentmap;
import org.junit.Before;
import org.junit.Test;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import static org.junit.Assert.assertNull;
public class ConcurrentMapNullKeyValueTest {
ConcurrentMap<String, Object> concurrentMap;
@Before
public void setup() {
concurrentMap = new ConcurrentHashMap<>();
}
@Test(expected = NullPointerException.class)
public void givenConcurrentHashMap_whenGetWithNullKey_thenThrowsNPE() {
concurrentMap.get(null);
}
@Test(expected = NullPointerException.class)
public void givenConcurrentHashMap_whenGetOrDefaultWithNullKey_thenThrowsNPE() {
concurrentMap.getOrDefault(null, new Object());
}
@Test(expected = NullPointerException.class)
public void givenConcurrentHashMap_whenPutWithNullKey_thenThrowsNPE() {
concurrentMap.put(null, new Object());
}
@Test(expected = NullPointerException.class)
public void givenConcurrentHashMap_whenPutNullValue_thenThrowsNPE() {
concurrentMap.put("test", null);
}
@Test(expected = NullPointerException.class)
public void givenConcurrentHashMapAndKeyAbsent_whenPutWithNullKey_thenThrowsNPE() {
concurrentMap.putIfAbsent(null, new Object());
}
@Test(expected = NullPointerException.class)
public void givenConcurrentHashMapAndMapWithNullKey_whenPutNullKeyMap_thenThrowsNPE() {
Map<String, Object> nullKeyMap = new HashMap<>();
nullKeyMap.put(null, new Object());
concurrentMap.putAll(nullKeyMap);
}
@Test(expected = NullPointerException.class)
public void givenConcurrentHashMapAndMapWithNullValue_whenPutNullValueMap_thenThrowsNPE() {
Map<String, Object> nullValueMap = new HashMap<>();
nullValueMap.put("test", null);
concurrentMap.putAll(nullValueMap);
}
@Test(expected = NullPointerException.class)
public void givenConcurrentHashMap_whenReplaceNullKeyWithValues_thenThrowsNPE() {
concurrentMap.replace(null, new Object(), new Object());
}
@Test(expected = NullPointerException.class)
public void givenConcurrentHashMap_whenReplaceWithNullNewValue_thenThrowsNPE() {
Object o = new Object();
concurrentMap.replace("test", o, null);
}
@Test(expected = NullPointerException.class)
public void givenConcurrentHashMap_whenReplaceOldNullValue_thenThrowsNPE() {
Object o = new Object();
concurrentMap.replace("test", null, o);
}
@Test(expected = NullPointerException.class)
public void givenConcurrentHashMap_whenReplaceWithNullValue_thenThrowsNPE() {
concurrentMap.replace("test", null);
}
@Test(expected = NullPointerException.class)
public void givenConcurrentHashMap_whenReplaceNullKey_thenThrowsNPE() {
concurrentMap.replace(null, "test");
}
@Test(expected = NullPointerException.class)
public void givenConcurrentHashMap_whenReplaceAllMappingNull_thenThrowsNPE() {
concurrentMap.put("test", new Object());
concurrentMap.replaceAll((s, o) -> null);
}
@Test(expected = NullPointerException.class)
public void givenConcurrentHashMap_whenRemoveNullKey_thenThrowsNPE() {
concurrentMap.remove(null);
}
@Test(expected = NullPointerException.class)
public void givenConcurrentHashMap_whenRemoveNullKeyWithValue_thenThrowsNPE() {
concurrentMap.remove(null, new Object());
}
@Test(expected = NullPointerException.class)
public void givenConcurrentHashMap_whenMergeNullKeyWithValue_thenThrowsNPE() {
concurrentMap.merge(null, new Object(), (o, o2) -> o2);
}
@Test(expected = NullPointerException.class)
public void givenConcurrentHashMap_whenMergeKeyWithNullValue_thenThrowsNPE() {
concurrentMap.put("test", new Object());
concurrentMap.merge("test", null, (o, o2) -> o2);
}
@Test(expected = NullPointerException.class)
public void givenConcurrentHashMapAndAssumeKeyAbsent_whenComputeWithNullKey_thenThrowsNPE() {
concurrentMap.computeIfAbsent(null, s -> s);
}
@Test(expected = NullPointerException.class)
public void givenConcurrentHashMapAndAssumeKeyPresent_whenComputeWithNullKey_thenThrowsNPE() {
concurrentMap.computeIfPresent(null, (s, o) -> o);
}
@Test(expected = NullPointerException.class)
public void givenConcurrentHashMap_whenComputeWithNullKey_thenThrowsNPE() {
concurrentMap.compute(null, (s, o) -> o);
}
@Test
public void givenConcurrentHashMap_whenMergeKeyRemappingNull_thenRemovesMapping() {
Object oldValue = new Object();
concurrentMap.put("test", oldValue);
concurrentMap.merge("test", new Object(), (o, o2) -> null);
assertNull(concurrentMap.get("test"));
}
@Test
public void givenConcurrentHashMapAndKeyAbsent_whenComputeWithKeyRemappingNull_thenRemainsAbsent() {
concurrentMap.computeIfPresent("test", (s, o) -> null);
assertNull(concurrentMap.get("test"));
}
@Test
public void givenKeyPresent_whenComputeIfPresentRemappingNull_thenMappingRemoved() {
Object oldValue = new Object();
concurrentMap.put("test", oldValue);
concurrentMap.computeIfPresent("test", (s, o) -> null);
assertNull(concurrentMap.get("test"));
}
@Test
public void givenKeyPresent_whenComputeRemappingNull_thenMappingRemoved() {
Object oldValue = new Object();
concurrentMap.put("test", oldValue);
concurrentMap.compute("test", (s, o) -> null);
assertNull(concurrentMap.get("test"));
}
}

95
core-java/src/test/java/com/baeldung/java/concurrentmap/ConcurrentMapPerformanceTest.java Normal file
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@ -0,0 +1,95 @@
package com.baeldung.java.concurrentmap;
import org.junit.Test;
import java.util.Collections;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Map;
import java.util.concurrent.*;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
public class ConcurrentMapPerformanceTest {
@Test
public void givenMaps_whenGetPut500KTimes_thenConcurrentMapFaster() throws Exception {
Map<String, Object> hashtable = new Hashtable<>();
Map<String, Object> synchronizedHashMap = Collections.synchronizedMap(new HashMap<>());
Map<String, Object> concurrentHashMap = new ConcurrentHashMap<>();
long hashtableAvgRuntime = timeElapseForGetPut(hashtable);
long syncHashMapAvgRuntime = timeElapseForGetPut(synchronizedHashMap);
long concurrentHashMapAvgRuntime = timeElapseForGetPut(concurrentHashMap);
System.out.println(String.format("Hashtable: %s, syncHashMap: %s, ConcurrentHashMap: %s", hashtableAvgRuntime, syncHashMapAvgRuntime, concurrentHashMapAvgRuntime));
assertTrue(hashtableAvgRuntime > concurrentHashMapAvgRuntime);
assertTrue(syncHashMapAvgRuntime > concurrentHashMapAvgRuntime);
}
private long timeElapseForGetPut(Map<String, Object> map) throws InterruptedException {
ExecutorService executorService = Executors.newFixedThreadPool(4);
long startTime = System.nanoTime();
for (int i = 0; i < 4; i++) {
executorService.execute(() -> {
for (int j = 0; j < 500_000; j++) {
int value = ThreadLocalRandom.current().nextInt(10000);
String key = String.valueOf(value);
map.put(key, value);
map.get(key);
}
});
}
executorService.shutdown();
executorService.awaitTermination(1, TimeUnit.MINUTES);
return (System.nanoTime() - startTime) / 500_000;
}
@Test
public void givenConcurrentMap_whenKeyWithSameHashCode_thenPerformanceDegrades() throws InterruptedException {
class SameHash {
@Override
public int hashCode() {
return 1;
}
}
int executeTimes = 5000;
Map<SameHash, Integer> mapOfSameHash = new ConcurrentHashMap<>();
ExecutorService executorService = Executors.newFixedThreadPool(2);
long sameHashStartTime = System.currentTimeMillis();
for (int i = 0; i < 2; i++) {
executorService.execute(() -> {
for (int j = 0; j < executeTimes; j++) {
mapOfSameHash.put(new SameHash(), 1);
}
});
}
executorService.shutdown();
executorService.awaitTermination(5, TimeUnit.SECONDS);
long mapOfSameHashDuration = System.currentTimeMillis() - sameHashStartTime;
Map<Object, Integer> mapOfDefaultHash = new ConcurrentHashMap<>();
executorService = Executors.newFixedThreadPool(2);
long defaultHashStartTime = System.currentTimeMillis();
for (int i = 0; i < 2; i++) {
executorService.execute(() -> {
for (int j = 0; j < executeTimes; j++) {
mapOfDefaultHash.put(new Object(), 1);
}
});
}
executorService.shutdown();
executorService.awaitTermination(5, TimeUnit.SECONDS);
long mapOfDefaultHashDuration = System.currentTimeMillis() - defaultHashStartTime;
assertEquals(executeTimes * 2, mapOfDefaultHash.size());
assertEquals(executeTimes * 2, mapOfSameHash.size());
System.out.println(String.format("same-hash: %s, default-hash: %s", mapOfSameHashDuration, mapOfDefaultHashDuration));
assertTrue("same hashCode() should greatly degrade performance", mapOfSameHashDuration > mapOfDefaultHashDuration * 10);
}
}

60
core-java/src/test/java/com/baeldung/java/concurrentmap/ConcurretMapMemoryConsistencyTest.java Normal file
View File

@ -0,0 +1,60 @@
package com.baeldung.java.concurrentmap;
import org.junit.Test;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import static org.junit.Assert.*;
public class ConcurretMapMemoryConsistencyTest {
@Test
public void givenConcurrentMap_whenSumParallel_thenCorrect() throws Exception {
Map<String, Integer> map = new ConcurrentHashMap<>();
List<Integer> sumList = parallelSum100(map, 1000);
assertEquals(1, sumList.stream().distinct().count());
long wrongResultCount = sumList.stream().filter(num -> num != 100).count();
assertEquals(0, wrongResultCount);
}
@Test
public void givenHashtable_whenSumParallel_thenCorrect() throws Exception {
Map<String, Integer> map = new Hashtable<>();
List<Integer> sumList = parallelSum100(map, 1000);
assertEquals(1, sumList.stream().distinct().count());
long wrongResultCount = sumList.stream().filter(num -> num != 100).count();
assertEquals(0, wrongResultCount);
}
@Test
public void givenHashMap_whenSumParallel_thenError() throws Exception {
Map<String, Integer> map = new HashMap<>();
List<Integer> sumList = parallelSum100(map, 100);
assertNotEquals(1, sumList.stream().distinct().count());
long wrongResultCount = sumList.stream().filter(num -> num != 100).count();
assertTrue(wrongResultCount > 0);
}
private List<Integer> parallelSum100(Map<String, Integer> map, int executionTimes) throws InterruptedException {
List<Integer> sumList = new ArrayList<>(1000);
for (int i = 0; i < executionTimes; i++) {
map.put("test", 0);
ExecutorService executorService = Executors.newFixedThreadPool(4);
for (int j = 0; j < 10; j++) {
executorService.execute(() -> {
for (int k = 0; k < 10; k++)
map.computeIfPresent("test", (key, value) -> value + 1);
});
}
executorService.shutdown();
executorService.awaitTermination(5, TimeUnit.SECONDS);
sumList.add(map.get("test"));
}
return sumList;
}
}

3
core-java/src/test/java/com/baeldung/java/conversion/IterableStreamConversionTest.java
View File

@ -24,8 +24,7 @@ public class IterableStreamConversionTest {
public void whenConvertedToList_thenCorrect() {
Iterable<String> iterable = Arrays.asList("Testing", "Iterable", "conversion", "to", "Stream");
List<String> result = StreamSupport.stream(iterable.spliterator(), false)
.map(String::toUpperCase).collect(Collectors.toList());
List<String> result = StreamSupport.stream(iterable.spliterator(), false).map(String::toUpperCase).collect(Collectors.toList());
assertThat(result, contains("TESTING", "ITERABLE", "CONVERSION", "TO", "STREAM"));
}

10
core-java/src/test/java/com/baeldung/java/map/MapTest.java
View File

@ -201,8 +201,6 @@ public class MapTest {
assertEquals("val1", rtnVal);
}
@Test
public void whenCallsEqualsOnCollision_thenCorrect() {
HashMap<MyKey, String> map = new HashMap<>();
@ -311,13 +309,7 @@ public class MapTest {
@Test
public void givenTreeMap_whenOrdersEntriesByComparator_thenCorrect() {
TreeMap<Integer, String> map = new TreeMap<>(new Comparator<Integer>() {
@Override
public int compare(Integer o1, Integer o2) {
return o2 - o1;
}
});
TreeMap<Integer, String> map = new TreeMap<>(Comparator.reverseOrder());
map.put(3, "val");
map.put(2, "val");
map.put(1, "val");

7
core-java/src/test/java/com/baeldung/java8/Java8FindAnyFindFirstTest.java
View File

@ -1,6 +1,5 @@
package com.baeldung.java8;
import org.junit.Test;
import java.util.Arrays;
@ -28,11 +27,7 @@ public class Java8FindAnyFindFirstTest {
@Test
public void createParallelStream_whenFindAnyResultIsPresent_thenCorrect() throws Exception {
List<Integer> list = Arrays.asList(1, 2, 3, 4, 5);
Optional<Integer> result = list
.stream()
.parallel()
.filter(num -> num < 4)
.findAny();
Optional<Integer> result = list.stream().parallel().filter(num -> num < 4).findAny();
assertTrue(result.isPresent());
assertThat(result.get(), anyOf(is(1), is(2), is(3)));

4
core-java/src/test/java/com/baeldung/scripting/NashornTest.java
View File

@ -56,9 +56,7 @@ public class NashornTest {
Map<String, Object> map = (Map<String, Object>) obj;
Assert.assertEquals("hello", map.get("greet"));
Assert.assertTrue(List.class.isAssignableFrom(map
.get("primes")
.getClass()));
Assert.assertTrue(List.class.isAssignableFrom(map.get("primes").getClass()));
}
@Test

3
couchbase-sdk/src/main/java/com/baeldung/couchbase/async/person/Person.java
View File

@ -9,7 +9,8 @@ public class Person implements CouchbaseEntity {
private String name;
private String homeTown;
Person() {}
Person() {
}
public Person(Builder b) {
this.id = b.id;

4
couchbase-sdk/src/main/java/com/baeldung/couchbase/async/person/PersonCrudService.java
View File

@ -13,9 +13,7 @@ import com.baeldung.couchbase.async.service.BucketService;
public class PersonCrudService extends AbstractCrudService<Person> {
@Autowired
public PersonCrudService(
@Qualifier("TutorialBucketService") BucketService bucketService,
PersonDocumentConverter converter) {
public PersonCrudService(@Qualifier("TutorialBucketService") BucketService bucketService, PersonDocumentConverter converter) {
super(bucketService, converter);
}

5
couchbase-sdk/src/main/java/com/baeldung/couchbase/async/person/PersonDocumentConverter.java
View File

@ -11,10 +11,7 @@ public class PersonDocumentConverter implements JsonDocumentConverter<Person> {
@Override
public JsonDocument toDocument(Person p) {
JsonObject content = JsonObject.empty()
.put("type", "Person")
.put("name", p.getName())
.put("homeTown", p.getHomeTown());
JsonObject content = JsonObject.empty().put("type", "Person").put("name", p.getName()).put("homeTown", p.getHomeTown());
return JsonDocument.create(p.getId(), content);
}

3
couchbase-sdk/src/main/java/com/baeldung/couchbase/async/person/RegistrationService.java
View File

@ -21,8 +21,7 @@ public class RegistrationService {
public Person findRegistrant(String id) {
try {
return crud.read(id);
}
catch(CouchbaseException e) {
} catch (CouchbaseException e) {
return crud.readFromReplica(id);
}
}

55
couchbase-sdk/src/main/java/com/baeldung/couchbase/async/service/AbstractCrudService.java
View File

@ -73,9 +73,7 @@ public abstract class AbstractCrudService<T extends CouchbaseEntity> implements
@Override
public List<T> readBulk(Iterable<String> ids) {
final AsyncBucket asyncBucket = bucket.async();
Observable<JsonDocument> asyncOperation = Observable
.from(ids)
.flatMap(new Func1<String, Observable<JsonDocument>>() {
Observable<JsonDocument> asyncOperation = Observable.from(ids).flatMap(new Func1<String, Observable<JsonDocument>>() {
public Observable<JsonDocument> call(String key) {
return asyncBucket.get(key);
}
@ -83,8 +81,7 @@ public abstract class AbstractCrudService<T extends CouchbaseEntity> implements
final List<T> items = new ArrayList<T>();
try {
asyncOperation.toBlocking()
.forEach(new Action1<JsonDocument>() {
asyncOperation.toBlocking().forEach(new Action1<JsonDocument>() {
public void call(JsonDocument doc) {
T item = converter.fromDocument(doc);
items.add(item);
@ -100,9 +97,7 @@ public abstract class AbstractCrudService<T extends CouchbaseEntity> implements
@Override
public void createBulk(Iterable<T> items) {
final AsyncBucket asyncBucket = bucket.async();
Observable
.from(items)
.flatMap(new Func1<T, Observable<JsonDocument>>() {
Observable.from(items).flatMap(new Func1<T, Observable<JsonDocument>>() {
@SuppressWarnings("unchecked")
@Override
public Observable<JsonDocument> call(final T t) {
@ -110,62 +105,34 @@ public abstract class AbstractCrudService<T extends CouchbaseEntity> implements
t.setId(UUID.randomUUID().toString());
}
JsonDocument doc = converter.toDocument(t);
return asyncBucket.insert(doc)
.retryWhen(RetryBuilder
.anyOf(BackpressureException.class)
.delay(Delay.exponential(TimeUnit.MILLISECONDS, 100))
.max(10)
.build());
return asyncBucket.insert(doc).retryWhen(RetryBuilder.anyOf(BackpressureException.class).delay(Delay.exponential(TimeUnit.MILLISECONDS, 100)).max(10).build());
}
})
.last()
.toBlocking()
.single();
}).last().toBlocking().single();
}
@Override
public void updateBulk(Iterable<T> items) {
final AsyncBucket asyncBucket = bucket.async();
Observable
.from(items)
.flatMap(new Func1<T, Observable<JsonDocument>>() {
Observable.from(items).flatMap(new Func1<T, Observable<JsonDocument>>() {
@SuppressWarnings("unchecked")
@Override
public Observable<JsonDocument> call(final T t) {
JsonDocument doc = converter.toDocument(t);
return asyncBucket.upsert(doc)
.retryWhen(RetryBuilder
.anyOf(BackpressureException.class)
.delay(Delay.exponential(TimeUnit.MILLISECONDS, 100))
.max(10)
.build());
return asyncBucket.upsert(doc).retryWhen(RetryBuilder.anyOf(BackpressureException.class).delay(Delay.exponential(TimeUnit.MILLISECONDS, 100)).max(10).build());
}
})
.last()
.toBlocking()
.single();
}).last().toBlocking().single();
}
@Override
public void deleteBulk(Iterable<String> ids) {
final AsyncBucket asyncBucket = bucket.async();
Observable
.from(ids)
.flatMap(new Func1<String, Observable<JsonDocument>>() {
Observable.from(ids).flatMap(new Func1<String, Observable<JsonDocument>>() {
@SuppressWarnings("unchecked")
@Override
public Observable<JsonDocument> call(String key) {
return asyncBucket.remove(key)
.retryWhen(RetryBuilder
.anyOf(BackpressureException.class)
.delay(Delay.exponential(TimeUnit.MILLISECONDS, 100))
.max(10)
.build());
return asyncBucket.remove(key).retryWhen(RetryBuilder.anyOf(BackpressureException.class).delay(Delay.exponential(TimeUnit.MILLISECONDS, 100)).max(10).build());
}
})
.last()
.toBlocking()
.single();
}).last().toBlocking().single();
}
@Override

15
couchbase-sdk/src/main/java/com/baeldung/couchbase/intro/CodeSnippets.java
View File

@ -20,10 +20,7 @@ public class CodeSnippets {
}
static Cluster loadClusterWithCustomEnvironment() {
CouchbaseEnvironment env = DefaultCouchbaseEnvironment.builder()
.connectTimeout(10000)
.kvTimeout(3000)
.build();
CouchbaseEnvironment env = DefaultCouchbaseEnvironment.builder().connectTimeout(10000).kvTimeout(3000).build();
return CouchbaseCluster.create(env, "localhost");
}
@ -36,12 +33,7 @@ public class CodeSnippets {
}
static JsonDocument insertExample(Bucket bucket) {
JsonObject content = JsonObject.empty()
.put("name", "John Doe")
.put("type", "Person")
.put("email", "john.doe@mydomain.com")
.put("homeTown", "Chicago")
;
JsonObject content = JsonObject.empty().put("name", "John Doe").put("type", "Person").put("email", "john.doe@mydomain.com").put("homeTown", "Chicago");
String id = UUID.randomUUID().toString();
JsonDocument document = JsonDocument.create(id, content);
JsonDocument inserted = bucket.insert(document);
@ -72,8 +64,7 @@ public class CodeSnippets {
static JsonDocument getFirstFromReplicaExample(Bucket bucket, String id) {
try {
return bucket.get(id);
}
catch(CouchbaseException e) {
} catch (CouchbaseException e) {
List<JsonDocument> list = bucket.getFromReplica(id, ReplicaMode.FIRST);
if (!list.isEmpty()) {
return list.get(0);

3
couchbase-sdk/src/main/java/com/baeldung/couchbase/spring/person/Person.java
View File

@ -7,7 +7,8 @@ public class Person {
private String name;
private String homeTown;
Person() {}
Person() {
}
public Person(Builder b) {
this.id = b.id;

5
couchbase-sdk/src/main/java/com/baeldung/couchbase/spring/person/PersonDocumentConverter.java
View File

@ -11,10 +11,7 @@ public class PersonDocumentConverter implements JsonDocumentConverter<Person> {
@Override
public JsonDocument toDocument(Person p) {
JsonObject content = JsonObject.empty()
.put("type", "Person")
.put("name", p.getName())
.put("homeTown", p.getHomeTown());
JsonObject content = JsonObject.empty().put("type", "Person").put("name", p.getName()).put("homeTown", p.getHomeTown());
return JsonDocument.create(p.getId(), content);
}

3
couchbase-sdk/src/main/java/com/baeldung/couchbase/spring/person/RegistrationService.java
View File

@ -21,8 +21,7 @@ public class RegistrationService {
public Person findRegistrant(String id) {
try {
return crud.read(id);
}
catch(CouchbaseException e) {
} catch (CouchbaseException e) {
return crud.readFromReplica(id);
}
}

7
couchbase-sdk/src/main/java/com/baeldung/couchbase/spring/service/ClusterServiceImpl.java
View File

@ -59,9 +59,7 @@ public class ClusterServiceImpl implements ClusterService {
@Override
public List<JsonDocument> getDocumentsAsync(final AsyncBucket asyncBucket, Iterable<String> keys) {
Observable<JsonDocument> asyncBulkGet = Observable
.from(keys)
.flatMap(new Func1<String, Observable<JsonDocument>>() {
Observable<JsonDocument> asyncBulkGet = Observable.from(keys).flatMap(new Func1<String, Observable<JsonDocument>>() {
public Observable<JsonDocument> call(String key) {
return asyncBucket.get(key);
}
@ -69,8 +67,7 @@ public class ClusterServiceImpl implements ClusterService {
final List<JsonDocument> docs = new ArrayList<>();
try {
asyncBulkGet.toBlocking()
.forEach(new Action1<JsonDocument>() {
asyncBulkGet.toBlocking().forEach(new Action1<JsonDocument>() {
public void call(JsonDocument doc) {
docs.add(doc);
}

11
couchbase-sdk/src/test/java/com/baeldung/couchbase/async/person/PersonCrudServiceIntegrationTest.java
View File

@ -207,17 +207,10 @@ public class PersonCrudServiceIntegrationTest extends AsyncIntegrationTest {
}
private Person randomPerson() {
return Person.Builder.newInstance()
.name(RandomStringUtils.randomAlphabetic(10))
.homeTown(RandomStringUtils.randomAlphabetic(10))
.build();
return Person.Builder.newInstance().name(RandomStringUtils.randomAlphabetic(10)).homeTown(RandomStringUtils.randomAlphabetic(10)).build();
}
private Person randomPersonWithId() {
return Person.Builder.newInstance()
.id(UUID.randomUUID().toString())
.name(RandomStringUtils.randomAlphabetic(10))
.homeTown(RandomStringUtils.randomAlphabetic(10))
.build();
return Person.Builder.newInstance().id(UUID.randomUUID().toString()).name(RandomStringUtils.randomAlphabetic(10)).homeTown(RandomStringUtils.randomAlphabetic(10)).build();
}
}

11
couchbase-sdk/src/test/java/com/baeldung/couchbase/spring/person/PersonCrudServiceIntegrationTest.java
View File

@ -66,17 +66,10 @@ public class PersonCrudServiceIntegrationTest extends IntegrationTest {
}
private Person buildClarkKent() {
return Person.Builder.newInstance()
.id(CLARK_KENT_ID)
.name(CLARK_KENT)
.homeTown(SMALLVILLE)
.build();
return Person.Builder.newInstance().id(CLARK_KENT_ID).name(CLARK_KENT).homeTown(SMALLVILLE).build();
}
private Person randomPerson() {
return Person.Builder.newInstance()
.name(RandomStringUtils.randomAlphabetic(10))
.homeTown(RandomStringUtils.randomAlphabetic(10))
.build();
return Person.Builder.newInstance().name(RandomStringUtils.randomAlphabetic(10)).homeTown(RandomStringUtils.randomAlphabetic(10)).build();
}
}

5
deltaspike/src/main/java/baeldung/data/MemberRepository.java
View File

@ -35,9 +35,6 @@ public abstract class MemberRepository extends AbstractEntityRepository<Member,
public List<Member> findAllOrderedByNameWithQueryDSL() {
final QMember member = QMember.member;
return jpaQuery()
.from(member)
.orderBy(member.email.asc())
.list(member);
return jpaQuery().from(member).orderBy(member.email.asc()).list(member);
}
}

1
deltaspike/src/main/java/baeldung/service/MemberRegistration.java
View File

@ -64,7 +64,6 @@ public class MemberRegistration {
}
}
public void register(Member member) throws Exception {
log.info("Registering " + member.getName());
validateMember(member);

24
deltaspike/src/test/java/baeldung/test/MemberRegistrationTest.java
View File

@ -41,27 +41,13 @@ import org.junit.runner.RunWith;
public class MemberRegistrationTest {
@Deployment
public static Archive<?> createTestArchive() {
File[] files = Maven.resolver().loadPomFromFile("pom.xml")
.importRuntimeDependencies().resolve().withTransitivity().asFile();
File[] files = Maven.resolver().loadPomFromFile("pom.xml").importRuntimeDependencies().resolve().withTransitivity().asFile();
return ShrinkWrap.create(WebArchive.class, "test.war")
.addClasses(
EntityManagerProducer.class,
Member.class,
MemberRegistration.class,
MemberRepository.class,
Resources.class,
QueryDslRepositoryExtension.class,
QueryDslSupport.class,
SecondaryPersistenceUnit.class,
SecondaryEntityManagerProducer.class,
SecondaryEntityManagerResolver.class)
.addAsResource("META-INF/test-persistence.xml", "META-INF/persistence.xml")
.addAsResource("META-INF/apache-deltaspike.properties")
.addAsWebInfResource(EmptyAsset.INSTANCE, "beans.xml")
.addAsWebInfResource("test-ds.xml")
.addAsWebInfResource("test-secondary-ds.xml")
.addAsLibraries(files);
.addClasses(EntityManagerProducer.class, Member.class, MemberRegistration.class, MemberRepository.class, Resources.class, QueryDslRepositoryExtension.class, QueryDslSupport.class, SecondaryPersistenceUnit.class,
SecondaryEntityManagerProducer.class, SecondaryEntityManagerResolver.class)
.addAsResource("META-INF/test-persistence.xml", "META-INF/persistence.xml").addAsResource("META-INF/apache-deltaspike.properties").addAsWebInfResource(EmptyAsset.INSTANCE, "beans.xml").addAsWebInfResource("test-ds.xml")
.addAsWebInfResource("test-secondary-ds.xml").addAsLibraries(files);
}
@Inject

11
feign/src/main/java/com/baeldung/feign/BookControllerFeignClientBuilder.java
View File

@ -11,16 +11,9 @@ import lombok.Getter;
@Getter
public class BookControllerFeignClientBuilder {
private BookClient bookClient = createClient(BookClient.class,
"http://localhost:8081/api/books");
private BookClient bookClient = createClient(BookClient.class, "http://localhost:8081/api/books");
private static <T> T createClient(Class<T> type, String uri) {
return Feign.builder()
.client(new OkHttpClient())
.encoder(new GsonEncoder())
.decoder(new GsonDecoder())
.logger(new Slf4jLogger(type))
.logLevel(Logger.Level.FULL)
.target(type, uri);
return Feign.builder().client(new OkHttpClient()).encoder(new GsonEncoder()).decoder(new GsonDecoder()).logger(new Slf4jLogger(type)).logLevel(Logger.Level.FULL).target(type, uri);
}
}

4
feign/src/test/java/com/baeldung/feign/clients/BookClientTest.java
View File

@ -31,9 +31,7 @@ public class BookClientTest {
@Test
public void givenBookClient_shouldRunSuccessfully() throws Exception {
List<Book> books = bookClient.findAll().stream()
.map(BookResource::getBook)
.collect(Collectors.toList());
List<Book> books = bookClient.findAll().stream().map(BookResource::getBook).collect(Collectors.toList());
assertTrue(books.size() > 2);
log.info("{}", books);
}

7
guava/pom.xml
View File

@ -57,6 +57,12 @@
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
@ -100,6 +106,7 @@
<org.hamcrest.version>1.3</org.hamcrest.version>
<junit.version>4.12</junit.version>
<mockito.version>1.10.19</mockito.version>
<assertj.version>3.6.1</assertj.version>
<!-- maven plugins -->
<maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>

157
guava/src/test/java/org/baeldung/guava/GuavaPreConditionsTest.java Normal file
View File

@ -0,0 +1,157 @@
package org.baeldung.guava;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
import java.util.Arrays;
import org.junit.Test;
import static com.google.common.base.Preconditions.*;
public class GuavaPreConditionsTest {
@Test
public void whenCheckArgumentEvaluatesFalse_throwsException() {
int age = -18;
assertThatThrownBy(() -> checkArgument(age > 0))
.isInstanceOf(IllegalArgumentException.class)
.hasMessage(null)
.hasNoCause();
}
@Test
public void givenErrorMessage_whenCheckArgumentEvaluatesFalse_throwsException() {
final int age = -18;
final String message = "Age can't be zero or less than zero";
assertThatThrownBy(() -> checkArgument(age > 0, message))
.isInstanceOf(IllegalArgumentException.class)
.hasMessage(message)
.hasNoCause();
}
@Test
public void givenTemplatedErrorMessage_whenCheckArgumentEvaluatesFalse_throwsException() {
final int age = -18;
final String message = "Age can't be zero or less than zero, you supplied %s.";
assertThatThrownBy(() -> checkArgument(age > 0, message, age))
.isInstanceOf(IllegalArgumentException.class)
.hasMessage(message, age)
.hasNoCause();
}
@Test
public void givenArrayOfIntegers_whenCheckElementIndexEvaluatesFalse_throwsException() {
final int[] numbers = { 1, 2, 3, 4, 5 };
assertThatThrownBy(() -> checkElementIndex(6, numbers.length - 1))
.isInstanceOf(IndexOutOfBoundsException.class)
.hasNoCause();
}
@Test
public void givenArrayOfIntegersAndMessage_whenCheckElementIndexEvaluatesFalse_throwsException() {
final int[] numbers = { 1, 2, 3, 4, 5 };
final String message = "Please check the bound of an array and retry";
assertThatThrownBy(() -> checkElementIndex(6, numbers.length - 1, message))
.isInstanceOf(IndexOutOfBoundsException.class)
.hasMessageStartingWith(message)
.hasNoCause();
}
@Test
public void givenNullString_whenCheckNotNullCalled_throwsException() {
final String nullObject = null;
assertThatThrownBy(() -> checkNotNull(nullObject))
.isInstanceOf(NullPointerException.class)
.hasMessage(null)
.hasNoCause();
}
@Test
public void givenNullString_whenCheckNotNullCalledWithMessage_throwsException() {
final String nullObject = null;
final String message = "Please check the Object supplied, its null!";
assertThatThrownBy(() -> checkNotNull(nullObject, message))
.isInstanceOf(NullPointerException.class)
.hasMessage(message)
.hasNoCause();
}
@Test
public void givenNullString_whenCheckNotNullCalledWithTemplatedMessage_throwsException() {
final String nullObject = null;
final String message = "Please check the Object supplied, its %s!";
assertThatThrownBy(() -> checkNotNull(nullObject, message, nullObject))
.isInstanceOf(NullPointerException.class)
.hasMessage(message, nullObject)
.hasNoCause();
}
@Test
public void givenArrayOfIntegers_whenCheckPositionIndexEvaluatesFalse_throwsException() {
final int[] numbers = { 1, 2, 3, 4, 5 };
assertThatThrownBy(() -> checkPositionIndex(6, numbers.length - 1))
.isInstanceOf(IndexOutOfBoundsException.class)
.hasNoCause();
}
@Test
public void givenArrayOfIntegersAndMessage_whenCheckPositionIndexEvaluatesFalse_throwsException() {
final int[] numbers = { 1, 2, 3, 4, 5 };
final String message = "Please check the bound of an array and retry";
assertThatThrownBy(() -> checkPositionIndex(6, numbers.length - 1, message))
.isInstanceOf(IndexOutOfBoundsException.class)
.hasMessageStartingWith(message)
.hasNoCause();
}
@Test
public void givenArrayOfIntegers_whenCheckPositionIndexesEvaluatesFalse_throwsException() {
final int[] numbers = { 1, 2, 3, 4, 5 };
assertThatThrownBy(() -> checkPositionIndexes(6, 0, numbers.length - 1))
.isInstanceOf(IndexOutOfBoundsException.class)
.hasNoCause();
}
@Test
public void givenValidStates_whenCheckStateEvaluatesFalse_throwsException() {
final int[] validStates = { -1, 0, 1 };
final int givenState = 10;
assertThatThrownBy(() -> checkState(Arrays.binarySearch(validStates, givenState) > 0))
.isInstanceOf(IllegalStateException.class)
.hasMessage(null)
.hasNoCause();
}
@Test
public void givenValidStatesAndMessage_whenCheckStateEvaluatesFalse_throwsException() {
final int[] validStates = { -1, 0, 1 };
final int givenState = 10;
final String message = "You have entered an invalid state";
assertThatThrownBy(() -> checkState(Arrays.binarySearch(validStates, givenState) > 0, message))
.isInstanceOf(IllegalStateException.class)
.hasMessageStartingWith(message)
.hasNoCause();
}
@Test
public void givenValidStatesAndTemplatedMessage_whenCheckStateEvaluatesFalse_throwsException() {
final int[] validStates = { -1, 0, 1 };
final int givenState = 10;
final String message = "State can't be %s, It can be one of %s.";
assertThatThrownBy(() -> checkState(Arrays.binarySearch(validStates, givenState) > 0, message, givenState, Arrays.toString(validStates)))
.isInstanceOf(IllegalStateException.class)
.hasMessage(message, givenState, Arrays.toString(validStates))
.hasNoCause();
}
}

178
guava/src/test/java/org/baeldung/guava/GuavaTableTest.java Normal file
View File

@ -0,0 +1,178 @@
package org.baeldung.guava;
import static org.assertj.core.api.Assertions.*;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.junit.Test;
import com.google.common.collect.ArrayTable;
import com.google.common.collect.HashBasedTable;
import com.google.common.collect.ImmutableTable;
import com.google.common.collect.Lists;
import com.google.common.collect.Table;
import com.google.common.collect.TreeBasedTable;
public class GuavaTableTest {
@Test
public void givenTable_whenGet_returnsSuccessfully() {
final Table<String, String, Integer> universityCourseSeatTable = HashBasedTable.create();
universityCourseSeatTable.put("Mumbai", "Chemical", 120);
universityCourseSeatTable.put("Mumbai", "IT", 60);
universityCourseSeatTable.put("Harvard", "Electrical", 60);
universityCourseSeatTable.put("Harvard", "IT", 120);
final int seatCount = universityCourseSeatTable.get("Mumbai", "IT");
final Integer seatCountForNoEntry = universityCourseSeatTable.get("Oxford", "IT");
assertThat(seatCount).isEqualTo(60);
assertThat(seatCountForNoEntry).isEqualTo(null);
}
@Test
public void givenTable_whenContains_returnsSuccessfully() {
final Table<String, String, Integer> universityCourseSeatTable = HashBasedTable.create();
universityCourseSeatTable.put("Mumbai", "Chemical", 120);
universityCourseSeatTable.put("Mumbai", "IT", 60);
universityCourseSeatTable.put("Harvard", "Electrical", 60);
universityCourseSeatTable.put("Harvard", "IT", 120);
final boolean entryIsPresent = universityCourseSeatTable.contains("Mumbai", "IT");
final boolean entryIsAbsent = universityCourseSeatTable.contains("Oxford", "IT");
final boolean courseIsPresent = universityCourseSeatTable.containsColumn("IT");
final boolean universityIsPresent = universityCourseSeatTable.containsRow("Mumbai");
final boolean seatCountIsPresent = universityCourseSeatTable.containsValue(60);
assertThat(entryIsPresent).isEqualTo(true);
assertThat(entryIsAbsent).isEqualTo(false);
assertThat(courseIsPresent).isEqualTo(true);
assertThat(universityIsPresent).isEqualTo(true);
assertThat(seatCountIsPresent).isEqualTo(true);
}
@Test
public void givenTable_whenRemove_returnsSuccessfully() {
final Table<String, String, Integer> universityCourseSeatTable = HashBasedTable.create();
universityCourseSeatTable.put("Mumbai", "Chemical", 120);
universityCourseSeatTable.put("Mumbai", "IT", 60);
final int seatCount = universityCourseSeatTable.remove("Mumbai", "IT");
assertThat(seatCount).isEqualTo(60);
assertThat(universityCourseSeatTable.remove("Mumbai", "IT")).isEqualTo(null);
}
@Test
public void givenTable_whenColumn_returnsSuccessfully() {
final Table<String, String, Integer> universityCourseSeatTable = HashBasedTable.create();
universityCourseSeatTable.put("Mumbai", "Chemical", 120);
universityCourseSeatTable.put("Mumbai", "IT", 60);
universityCourseSeatTable.put("Harvard", "Electrical", 60);
universityCourseSeatTable.put("Harvard", "IT", 120);
final Map<String, Integer> universitySeatMap = universityCourseSeatTable.column("IT");
assertThat(universitySeatMap).hasSize(2);
assertThat(universitySeatMap.get("Mumbai")).isEqualTo(60);
assertThat(universitySeatMap.get("Harvard")).isEqualTo(120);
}
@Test
public void givenTable_whenColumnMap_returnsSuccessfully() {
final Table<String, String, Integer> universityCourseSeatTable = HashBasedTable.create();
universityCourseSeatTable.put("Mumbai", "Chemical", 120);
universityCourseSeatTable.put("Mumbai", "IT", 60);
universityCourseSeatTable.put("Harvard", "Electrical", 60);
universityCourseSeatTable.put("Harvard", "IT", 120);
final Map<String, Map<String, Integer>> courseKeyUniversitySeatMap = universityCourseSeatTable.columnMap();
assertThat(courseKeyUniversitySeatMap).hasSize(3);
assertThat(courseKeyUniversitySeatMap.get("IT")).hasSize(2);
assertThat(courseKeyUniversitySeatMap.get("Electrical")).hasSize(1);
assertThat(courseKeyUniversitySeatMap.get("Chemical")).hasSize(1);
}
@Test
public void givenTable_whenRow_returnsSuccessfully() {
final Table<String, String, Integer> universityCourseSeatTable = HashBasedTable.create();
universityCourseSeatTable.put("Mumbai", "Chemical", 120);
universityCourseSeatTable.put("Mumbai", "IT", 60);
universityCourseSeatTable.put("Harvard", "Electrical", 60);
universityCourseSeatTable.put("Harvard", "IT", 120);
final Map<String, Integer> courseSeatMap = universityCourseSeatTable.row("Mumbai");
assertThat(courseSeatMap).hasSize(2);
assertThat(courseSeatMap.get("IT")).isEqualTo(60);
assertThat(courseSeatMap.get("Chemical")).isEqualTo(120);
}
@Test
public void givenTable_whenRowKeySet_returnsSuccessfully() {
final Table<String, String, Integer> universityCourseSeatTable = HashBasedTable.create();
universityCourseSeatTable.put("Mumbai", "Chemical", 120);
universityCourseSeatTable.put("Mumbai", "IT", 60);
universityCourseSeatTable.put("Harvard", "Electrical", 60);
universityCourseSeatTable.put("Harvard", "IT", 120);
final Set<String> universitySet = universityCourseSeatTable.rowKeySet();
assertThat(universitySet).hasSize(2);
}
@Test
public void givenTable_whenColKeySet_returnsSuccessfully() {
final Table<String, String, Integer> universityCourseSeatTable = HashBasedTable.create();
universityCourseSeatTable.put("Mumbai", "Chemical", 120);
universityCourseSeatTable.put("Mumbai", "IT", 60);
universityCourseSeatTable.put("Harvard", "Electrical", 60);
universityCourseSeatTable.put("Harvard", "IT", 120);
final Set<String> courseSet = universityCourseSeatTable.columnKeySet();
assertThat(courseSet).hasSize(3);
}
@Test
public void givenTreeTable_whenGet_returnsSuccessfully() {
final Table<String, String, Integer> universityCourseSeatTable = TreeBasedTable.create();
universityCourseSeatTable.put("Mumbai", "Chemical", 120);
universityCourseSeatTable.put("Mumbai", "IT", 60);
universityCourseSeatTable.put("Harvard", "Electrical", 60);
universityCourseSeatTable.put("Harvard", "IT", 120);
final int seatCount = universityCourseSeatTable.get("Mumbai", "IT");
assertThat(seatCount).isEqualTo(60);
}
@Test
public void givenImmutableTable_whenGet_returnsSuccessfully() {
final Table<String, String, Integer> universityCourseSeatTable = ImmutableTable.<String, String, Integer> builder()
.put("Mumbai", "Chemical", 120)
.put("Mumbai", "IT", 60)
.put("Harvard", "Electrical", 60)
.put("Harvard", "IT", 120)
.build();
final int seatCount = universityCourseSeatTable.get("Mumbai", "IT");
assertThat(seatCount).isEqualTo(60);
}
@Test
public void givenArrayTable_whenGet_returnsSuccessfully() {
final List<String> universityRowTable = Lists.newArrayList("Mumbai", "Harvard");
final List<String> courseColumnTables = Lists.newArrayList("Chemical", "IT", "Electrical");
final Table<String, String, Integer> universityCourseSeatTable = ArrayTable.create(universityRowTable, courseColumnTables);
universityCourseSeatTable.put("Mumbai", "Chemical", 120);
universityCourseSeatTable.put("Mumbai", "IT", 60);
universityCourseSeatTable.put("Harvard", "Electrical", 60);
universityCourseSeatTable.put("Harvard", "IT", 120);
final int seatCount = universityCourseSeatTable.get("Mumbai", "IT");
assertThat(seatCount).isEqualTo(60);
}
}

8
java-cassandra/src/main/java/com/baeldung/cassandra/java/client/repository/BookRepository.java
View File

@ -80,12 +80,8 @@ public class BookRepository {
* @param book
*/
public void insertBookBatch(Book book) {
StringBuilder sb = new StringBuilder("BEGIN BATCH ")
.append("INSERT INTO ").append(TABLE_NAME).append("(id, title, author, subject) ")
.append("VALUES (").append(book.getId()).append(", '").append(book.getTitle()).append("', '").append(book.getAuthor()).append("', '")
.append(book.getSubject()).append("');")
.append("INSERT INTO ").append(TABLE_NAME_BY_TITLE).append("(id, title) ")
.append("VALUES (").append(book.getId()).append(", '").append(book.getTitle()).append("');")
StringBuilder sb = new StringBuilder("BEGIN BATCH ").append("INSERT INTO ").append(TABLE_NAME).append("(id, title, author, subject) ").append("VALUES (").append(book.getId()).append(", '").append(book.getTitle()).append("', '").append(book.getAuthor())
.append("', '").append(book.getSubject()).append("');").append("INSERT INTO ").append(TABLE_NAME_BY_TITLE).append("(id, title) ").append("VALUES (").append(book.getId()).append(", '").append(book.getTitle()).append("');")
.append("APPLY BATCH;");
final String query = sb.toString();

58
kotlin/pom.xml
View File

@ -28,9 +28,8 @@
</dependency>
</dependencies>
<build>
<sourceDirectory>${project.basedir}/src/main/kotlin</sourceDirectory>
<testSourceDirectory>${project.basedir}/src/test/kotlin</testSourceDirectory>
<plugins>
<plugin>
<artifactId>kotlin-maven-plugin</artifactId>
@ -39,16 +38,50 @@
<executions>
<execution>
<id>compile</id>
<goals>
<goal>compile</goal>
</goals>
<goals> <goal>compile</goal> </goals>
<configuration>
<sourceDirs>
<sourceDir>${project.basedir}/src/main/kotlin</sourceDir>
<sourceDir>${project.basedir}/src/main/java</sourceDir>
</sourceDirs>
</configuration>
</execution>
<execution>
<id>test-compile</id>
<goals>
<goal>test-compile</goal>
</goals>
<goals> <goal>test-compile</goal> </goals>
<configuration>
<sourceDirs>
<sourceDir>${project.basedir}/src/test/kotlin</sourceDir>
<sourceDir>${project.basedir}/src/test/java</sourceDir>
</sourceDirs>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.5.1</version>
<executions>
<!-- Replacing default-compile as it is treated specially by maven -->
<execution>
<id>default-compile</id>
<phase>none</phase>
</execution>
<!-- Replacing default-testCompile as it is treated specially by maven -->
<execution>
<id>default-testCompile</id>
<phase>none</phase>
</execution>
<execution>
<id>java-compile</id>
<phase>compile</phase>
<goals> <goal>compile</goal> </goals>
</execution>
<execution>
<id>java-test-compile</id>
<phase>test-compile</phase>
<goals> <goal>testCompile</goal> </goals>
</execution>
</executions>
</plugin>
@ -57,9 +90,10 @@
<properties>
<junit.version>4.12</junit.version>
<kotlin-test-junit.version>1.0.4</kotlin-test-junit.version>
<kotlin-stdlib.version>1.0.4</kotlin-stdlib.version>
<kotlin-maven-plugin.version>1.0.4</kotlin-maven-plugin.version>
<kotlin-maven-plugin.version>1.0.6</kotlin-maven-plugin.version>
<kotlin-test-junit.version>1.0.6</kotlin-test-junit.version>
<kotlin-stdlib.version>1.0.6</kotlin-stdlib.version>
<kotlin-maven-plugin.version>1.0.6</kotlin-maven-plugin.version>
</properties>
</project>

7
kotlin/src/main/java/com/baeldung/java/StringUtils.java Normal file
View File

@ -0,0 +1,7 @@
package com.baeldung.java;
public class StringUtils {
public static String toUpperCase(String name) {
return name.toUpperCase();
}
}

29
kotlin/src/main/kotlin/com/baeldung/kotlin/ItemService.kt
View File

@ -24,29 +24,41 @@ class ItemManager(val categoryId: String, val dbConnection: String) {
fun makeAnalyisOfCategory(catId: String): Unit {
val result = if (catId == "100") "Yes" else "No"
println(result)
`object`()
}
fun sum(a: Int, b: Int): Int {
return a + b
}
fun `object`(): String {
return "this is object"
}
}
fun main(args: Array<String>) {
val numbers = arrayOf("first", "second", "third", "fourth")
var concat = ""
for (n in numbers) {
concat += n
println(n)
}
var sum = 0
for (i in 2..9) {
sum += i
for (i in 2..9 step 2) {
println(i)
}
val res = 1.rangeTo(10).map { it * 2 }
println(res)
val firstName = "Tom"
val secondName = "Mary"
val concatOfNames = "$firstName + $secondName"
println("Names: $concatOfNames")
val sum = "four: ${2 + 2}"
val itemManager = ItemManager("cat_id", "db://connection")
ItemManager(categoryId = "catId", dbConnection = "db://Connection")
val result = "function result: ${itemManager.isFromSpecificCategory("1")}"
println(result)
@ -63,4 +75,9 @@ fun main(args: Array<String>) {
"Alice" -> println("Hi lady")
}
val items = listOf(1, 2, 3, 4)
val rwList = mutableListOf(1, 2, 3)
rwList.add(5)
}

7
kotlin/src/main/kotlin/com/baeldung/kotlin/MathematicsOperations.kt Normal file
View File

@ -0,0 +1,7 @@
package com.baeldung.kotlin
class MathematicsOperations {
fun addTwoNumbers(a: Int, b: Int): Int {
return a + b
}
}

17
kotlin/src/test/java/com/baeldung/kotlin/JavaCallToKotlinTest.java Normal file
View File

@ -0,0 +1,17 @@
package com.baeldung.kotlin;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
public class JavaCallToKotlinTest {
@Test
public void givenKotlinClass_whenCallFromJava_shouldProduceResults() {
//when
int res = new MathematicsOperations().addTwoNumbers(2, 4);
//then
assertEquals(6, res);
}
}

21
kotlin/src/test/kotlin/com/baeldung/kotlin/KotlinScalaInteroperabilityTest.kt Normal file
View File

@ -0,0 +1,21 @@
package com.baeldung.kotlin
import com.baeldung.java.StringUtils
import org.junit.Test
import kotlin.test.assertEquals
class KotlinScalaInteroperabilityTest {
@Test
fun givenLowercaseString_whenExecuteMethodFromJavaStringUtils_shouldReturnStringUppercase() {
//given
val name = "tom"
//whene
val res = StringUtils.toUpperCase(name)
//then
assertEquals(res, "TOM")
}
}

19
kotlin/src/test/kotlin/com/baeldung/kotlin/LambdaTest.kt Normal file
View File

@ -0,0 +1,19 @@
package com.baeldung.kotlin
import org.junit.Test
import kotlin.test.assertEquals
class LambdaTest {
@Test
fun givenListOfNumber_whenDoingOperationsUsingLambda_shouldReturnProperResult() {
//given
val listOfNumbers = listOf(1, 2, 3)
//when
val sum = listOfNumbers.reduce { a, b -> a + b }
//then
assertEquals(6, sum)
}
}

1
pom.xml
View File

@ -185,6 +185,7 @@
<module>xstream</module>
<module>struts2</module>
</modules>
</project>

1
spark-java/src/main/java/com/baeldung/sparkjava/HelloWorldService.java
View File

@ -1,4 +1,5 @@
package com.baeldung.sparkjava;
import static spark.Spark.*;
public class HelloWorldService {

24
spark-java/src/main/java/com/baeldung/sparkjava/SparkRestExample.java
View File

@ -24,17 +24,13 @@ public class SparkRestExample {
get("/users", (request, response) -> {
response.type("application/json");
return new Gson().toJson(
new StandardResponse(StatusResponse.SUCCESS,new Gson()
.toJsonTree(userService.getUsers())));
return new Gson().toJson(new StandardResponse(StatusResponse.SUCCESS, new Gson().toJsonTree(userService.getUsers())));
});
get("/users/:id", (request, response) -> {
response.type("application/json");
return new Gson().toJson(
new StandardResponse(StatusResponse.SUCCESS,new Gson()
.toJsonTree(userService.getUser(request.params(":id")))));
return new Gson().toJson(new StandardResponse(StatusResponse.SUCCESS, new Gson().toJsonTree(userService.getUser(request.params(":id")))));
});
put("/users/:id", (request, response) -> {
@ -44,13 +40,9 @@ public class SparkRestExample {
User editedUser = userService.editUser(toEdit);
if (editedUser != null) {
return new Gson().toJson(
new StandardResponse(StatusResponse.SUCCESS,new Gson()
.toJsonTree(editedUser)));
return new Gson().toJson(new StandardResponse(StatusResponse.SUCCESS, new Gson().toJsonTree(editedUser)));
} else {
return new Gson().toJson(
new StandardResponse(StatusResponse.ERROR,new Gson()
.toJson("User not found or error in edit")));
return new Gson().toJson(new StandardResponse(StatusResponse.ERROR, new Gson().toJson("User not found or error in edit")));
}
});
@ -58,17 +50,13 @@ public class SparkRestExample {
response.type("application/json");
userService.deleteUser(request.params(":id"));
return new Gson().toJson(
new StandardResponse(StatusResponse.SUCCESS, "user deleted"));
return new Gson().toJson(new StandardResponse(StatusResponse.SUCCESS, "user deleted"));
});
options("/users/:id", (request, response) -> {
response.type("application/json");
return new Gson().toJson(
new StandardResponse(StatusResponse.SUCCESS,
(userService.userExist(
request.params(":id"))) ? "User exists" : "User does not exists" ));
return new Gson().toJson(new StandardResponse(StatusResponse.SUCCESS, (userService.userExist(request.params(":id"))) ? "User exists" : "User does not exists"));
});
}

3
spark-java/src/main/java/com/baeldung/sparkjava/StatusResponse.java
View File

@ -1,8 +1,7 @@
package com.baeldung.sparkjava;
public enum StatusResponse {
SUCCESS ("Success"),
ERROR ("Error");
SUCCESS("Success"), ERROR("Error");
final private String status;

5
spark-java/src/main/java/com/baeldung/sparkjava/UserService.java
View File

@ -4,9 +4,14 @@ import java.util.Collection;
public interface UserService {
public void addUser(User user);
public Collection<User> getUsers();
public User getUser(String id);
public User editUser(User user) throws UserException;
public void deleteUser(String id);
public boolean userExist(String id);
}

39
spring-boot/MyFirstSpringBoot/pom.xml
View File

@ -1,39 +0,0 @@
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung</groupId>
<artifactId>MyFirstSpringBoot</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.3.RELEASE</version>
</parent>
<name>MyFirstSpringBoot</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
</project>

18
spring-boot/MyFirstSpringBoot/src/main/java/com/baeldung/controller/HomeController.java
View File

@ -1,18 +0,0 @@
package com.baeldung.controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class HomeController {
@RequestMapping("/")
public String root(){
return "Index Page";
}
@RequestMapping("/local")
public String local(){
return "/local";
}
}

8
spring-boot/MyFirstSpringBoot/src/main/resources/public/error/404.html
View File

@ -1,8 +0,0 @@
<html>
<head>
<title>RESOURCE NOT FOUND</title>
</head>
<body>
<h1>404 RESOURCE NOT FOUND</h1>
</body>
</html>

39
spring-boot/MyFirstSpringBoot/src/test/java/com/baeldung/AppTest.java
View File

@ -1,39 +0,0 @@
package com.baeldung;
import static org.hamcrest.Matchers.equalTo;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.http.MediaType;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
@RunWith(SpringRunner.class)
@SpringBootTest
@AutoConfigureMockMvc
public class AppTest {
@Autowired
private MockMvc mvc;
@Test
public void getIndex() throws Exception {
mvc.perform(MockMvcRequestBuilders.get("/").accept(MediaType.APPLICATION_JSON))
.andExpect(status().isOk())
.andExpect(content().string(equalTo("Index Page")));
}
@Test
public void getLocal() throws Exception {
mvc.perform(MockMvcRequestBuilders.get("/local").accept(MediaType.APPLICATION_JSON))
.andExpect(status().isOk())
.andExpect(content().string(equalTo("/local")));
}
}

8
spring-cloud/spring-cloud-bootstrap/config/src/main/java/com/baeldung/spring/cloud/bootstrap/config/SecurityConfig.java
View File

@ -18,12 +18,6 @@ public class SecurityConfig extends WebSecurityConfigurerAdapter {
@Override
protected void configure(HttpSecurity http) throws Exception {
http.authorizeRequests()
.anyRequest().hasRole("SYSTEM")
.and()
.httpBasic()
.and()
.csrf()
.disable();
http.authorizeRequests().anyRequest().hasRole("SYSTEM").and().httpBasic().and().csrf().disable();
}
}

35
spring-cloud/spring-cloud-bootstrap/discovery/src/main/java/com/baeldung/spring/cloud/bootstrap/discovery/SecurityConfig.java
View File

@ -22,19 +22,7 @@ public class SecurityConfig extends WebSecurityConfigurerAdapter {
@Override
protected void configure(HttpSecurity http) throws Exception {
http.sessionManagement()
.sessionCreationPolicy(SessionCreationPolicy.ALWAYS)
.and()
.requestMatchers()
.antMatchers("/eureka/**")
.and()
.authorizeRequests()
.antMatchers("/eureka/**").hasRole("SYSTEM")
.anyRequest().denyAll()
.and()
.httpBasic()
.and()
.csrf()
http.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.ALWAYS).and().requestMatchers().antMatchers("/eureka/**").and().authorizeRequests().antMatchers("/eureka/**").hasRole("SYSTEM").anyRequest().denyAll().and().httpBasic().and().csrf()
.disable();
}
@ -42,24 +30,15 @@ public class SecurityConfig extends WebSecurityConfigurerAdapter {
// no order tag means this is the last security filter to be evaluated
public static class AdminSecurityConfig extends WebSecurityConfigurerAdapter {
@Autowired public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
@Autowired
public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
auth.inMemoryAuthentication();
}
@Override protected void configure(HttpSecurity http) throws Exception {
http
.sessionManagement()
.sessionCreationPolicy(SessionCreationPolicy.NEVER)
.and()
.httpBasic()
.disable()
.authorizeRequests()
.antMatchers(HttpMethod.GET, "/").hasRole("ADMIN")
.antMatchers("/info","/health").authenticated()
.anyRequest().denyAll()
.and()
.csrf()
.disable();
@Override
protected void configure(HttpSecurity http) throws Exception {
http.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.NEVER).and().httpBasic().disable().authorizeRequests().antMatchers(HttpMethod.GET, "/").hasRole("ADMIN").antMatchers("/info", "/health").authenticated().anyRequest().denyAll()
.and().csrf().disable();
}
}
}

6
spring-cloud/spring-cloud-hystrix/feign-rest-consumer/src/main/java/com/baeldung/spring/cloud/hystrix/rest/consumer/GreetingClient.java
View File

@ -5,11 +5,7 @@ import org.springframework.cloud.netflix.feign.FeignClient;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.PathVariable;
@FeignClient(
name = "rest-producer",
url = "http://localhost:9090",
fallback = GreetingClient.GreetingClientFallback.class
)
@FeignClient(name = "rest-producer", url = "http://localhost:9090", fallback = GreetingClient.GreetingClientFallback.class)
public interface GreetingClient extends GreetingController {
@Component
public static class GreetingClientFallback implements GreetingClient {

5
spring-cloud/spring-cloud-rest/spring-cloud-rest-client-2/src/main/resources/application.properties → spring-cloud/spring-cloud-rest/application-config/resource.properties
View File

@ -1,6 +1,7 @@
spring.application.name=resource
#server.port=0
#### cloud
spring.application.name=spring-cloud-eureka-client
server.port=0
eureka.client.serviceUrl.defaultZone=${EUREKA_URI:http://system:systemPass@localhost:8761/eureka}
eureka.instance.preferIpAddress=true

6
spring-cloud/spring-cloud-rest/spring-cloud-rest-server/src/main/resources/application.properties → spring-cloud/spring-cloud-rest/application-config/spring-cloud-rest-server.properties
View File

@ -1,5 +1,9 @@
#### cloud
spring.application.name=spring-cloud-rest-server
server.port=8761
#### cloud
eureka.instance.hostname=localhost
eureka.client.serviceUrl.defaultZone=${EUREKA_URI:http://system:systemPass@localhost:8761/eureka}
eureka.client.registerWithEureka=false
eureka.client.fetchRegistry=false

5
spring-cloud/spring-cloud-rest/pom.xml
View File

@ -7,9 +7,10 @@
<artifactId>spring-cloud-rest</artifactId>
<version>1.0.0-SNAPSHOT</version>
<modules>
<module>spring-cloud-rest-config</module>
<module>spring-cloud-rest-server</module>
<module>spring-cloud-rest-client-1</module>
<module>spring-cloud-rest-client-2</module>
<module>spring-cloud-rest-books-api</module>
<module>spring-cloud-rest-reviews-api</module>
</modules>
<packaging>pom</packaging>

10
spring-cloud/spring-cloud-rest/spring-cloud-rest-client-1/pom.xml → spring-cloud/spring-cloud-rest/spring-cloud-rest-books-api/pom.xml
View File

@ -4,12 +4,12 @@
<modelVersion>4.0.0</modelVersion>
<groupId>org.baeldung</groupId>
<artifactId>spring-cloud-rest-client-1</artifactId>
<artifactId>spring-cloud-rest-books-api</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>spring-cloud-rest</name>
<description>Demo project for Spring Boot</description>
<name>spring-cloud-rest-books-api</name>
<description>Simple books API</description>
<parent>
<groupId>org.springframework.boot</groupId>
@ -26,6 +26,10 @@
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-config</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>

4
spring-cloud/spring-cloud-rest/spring-cloud-rest-client-1/src/main/java/org/baeldung/SpringCloudRestClientApplication.java → spring-cloud/spring-cloud-rest/spring-cloud-rest-books-api/src/main/java/org/baeldung/BooksApiApplication.java
View File

@ -6,9 +6,9 @@ import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
@SpringBootApplication
@EnableEurekaClient
public class SpringCloudRestClientApplication {
public class BooksApiApplication {
public static void main(String[] args) {
SpringApplication.run(SpringCloudRestClientApplication.class, args);
SpringApplication.run(BooksApiApplication.class, args);
}
}

0
spring-cloud/spring-cloud-rest/spring-cloud-rest-client-1/src/main/java/org/baeldung/SessionConfig.java → spring-cloud/spring-cloud-rest/spring-cloud-rest-books-api/src/main/java/org/baeldung/SessionConfig.java
View File

0
spring-cloud/spring-cloud-rest/spring-cloud-rest-client-1/src/main/java/org/baeldung/persistence/dao/BookRepository.java → spring-cloud/spring-cloud-rest/spring-cloud-rest-books-api/src/main/java/org/baeldung/persistence/dao/BookRepository.java
View File

8
spring-cloud/spring-cloud-rest/spring-cloud-rest-client-1/src/main/java/org/baeldung/persistence/model/Book.java → spring-cloud/spring-cloud-rest/spring-cloud-rest-books-api/src/main/java/org/baeldung/persistence/model/Book.java
View File

@ -104,13 +104,7 @@ public class Book {
@Override
public String toString() {
final StringBuilder builder = new StringBuilder();
builder.append("Book [id=")
.append(id)
.append(", title=")
.append(title)
.append(", author=")
.append(author)
.append("]");
builder.append("Book [id=").append(id).append(", title=").append(title).append(", author=").append(author).append("]");
return builder.toString();
}

9
spring-cloud/spring-cloud-rest/spring-cloud-rest-books-api/src/main/resources/bootstrap.properties Normal file
View File

@ -0,0 +1,9 @@
spring.cloud.config.name=resource
spring.cloud.config.discovery.service-id=config
spring.cloud.config.discovery.enabled=true
spring.cloud.config.username=configUser
spring.cloud.config.password=configPassword
eureka.client.serviceUrl.defaultZone=http://system:systemPass@localhost:8761/eureka
server.port=8084

2
spring-cloud/spring-cloud-rest/spring-cloud-rest-client-2/src/test/java/org/baeldung/SpringCloudRestClientApplicationTests.java → spring-cloud/spring-cloud-rest/spring-cloud-rest-books-api/src/test/java/org/baeldung/BooksApiIntegrationTest.java
View File

@ -7,7 +7,7 @@ import org.springframework.test.context.junit4.SpringRunner;
@RunWith(SpringRunner.class)
@SpringBootTest
public class SpringCloudRestClientApplicationTests {
public class BooksApiIntegrationTest {
@Test
public void contextLoads() {

42
spring-cloud/spring-cloud-rest/spring-cloud-rest-client-1/src/test/java/org/baeldung/RestApiLiveTest.java → spring-cloud/spring-cloud-rest/spring-cloud-rest-books-api/src/test/java/org/baeldung/RestApiLiveTest.java
View File

@ -19,7 +19,7 @@ import org.springframework.http.MediaType;
import org.springframework.test.context.junit4.SpringRunner;
@RunWith(SpringRunner.class)
@SpringBootTest(classes = { SpringCloudRestClientApplication.class }, webEnvironment = WebEnvironment.DEFINED_PORT)
@SpringBootTest(classes = { BooksApiApplication.class }, webEnvironment = WebEnvironment.DEFINED_PORT)
public class RestApiLiveTest {
private static final String API_URI = "http://localhost:8084/books";
@ -44,8 +44,7 @@ public class RestApiLiveTest {
final Response response = RestAssured.get(location);
assertEquals(HttpStatus.OK.value(), response.getStatusCode());
assertEquals(book.getTitle(), response.jsonPath()
.get("title"));
assertEquals(book.getTitle(), response.jsonPath().get("title"));
}
@Test
@ -55,8 +54,7 @@ public class RestApiLiveTest {
final Response response = RestAssured.get(API_URI + "/search/findByTitle?title=" + book.getTitle());
assertEquals(HttpStatus.OK.value(), response.getStatusCode());
assertTrue(response.jsonPath()
.getLong("page.totalElements") > 0);
assertTrue(response.jsonPath().getLong("page.totalElements") > 0);
}
@Test
@ -69,8 +67,7 @@ public class RestApiLiveTest {
public void whenGetNotExistBookByName_thenNotFound() {
final Response response = RestAssured.get(API_URI + "/search/findByTitle?title=" + randomAlphabetic(20));
assertEquals(HttpStatus.OK.value(), response.getStatusCode());
assertTrue(response.jsonPath()
.getLong("page.totalElements") == 0);
assertTrue(response.jsonPath().getLong("page.totalElements") == 0);
}
// POST
@ -78,10 +75,7 @@ public class RestApiLiveTest {
public void whenCreateNewBook_thenCreated() {
final Book book = createRandomBook();
final Response response = RestAssured.given()
.contentType(MediaType.APPLICATION_JSON_VALUE)
.body(book)
.post(API_URI);
final Response response = RestAssured.given().contentType(MediaType.APPLICATION_JSON_VALUE).body(book).post(API_URI);
assertEquals(HttpStatus.CREATED.value(), response.getStatusCode());
}
@ -91,10 +85,7 @@ public class RestApiLiveTest {
createBookAsUri(book);
// duplicate
final Response response = RestAssured.given()
.contentType(MediaType.APPLICATION_JSON_VALUE)
.body(book)
.post(API_URI);
final Response response = RestAssured.given().contentType(MediaType.APPLICATION_JSON_VALUE).body(book).post(API_URI);
assertEquals(HttpStatus.CONFLICT.value(), response.getStatusCode());
}
@ -103,10 +94,7 @@ public class RestApiLiveTest {
final Book book = createRandomBook();
book.setAuthor(null);
final Response response = RestAssured.given()
.contentType(MediaType.APPLICATION_JSON_VALUE)
.body(book)
.post(API_URI);
final Response response = RestAssured.given().contentType(MediaType.APPLICATION_JSON_VALUE).body(book).post(API_URI);
assertEquals(HttpStatus.CONFLICT.value(), response.getStatusCode());
}
@ -118,17 +106,13 @@ public class RestApiLiveTest {
// update
book.setAuthor("newAuthor");
Response response = RestAssured.given()
.contentType(MediaType.APPLICATION_JSON_VALUE)
.body(book)
.put(location);
Response response = RestAssured.given().contentType(MediaType.APPLICATION_JSON_VALUE).body(book).put(location);
assertEquals(HttpStatus.OK.value(), response.getStatusCode());
// check if changes saved
response = RestAssured.get(location);
assertEquals(HttpStatus.OK.value(), response.getStatusCode());
assertEquals("newAuthor", response.jsonPath()
.get("author"));
assertEquals("newAuthor", response.jsonPath().get("author"));
}
@ -163,12 +147,8 @@ public class RestApiLiveTest {
}
private String createBookAsUri(Book book) {
final Response response = RestAssured.given()
.contentType(MediaType.APPLICATION_JSON_VALUE)
.body(book)
.post(API_URI);
return response.jsonPath()
.get("_links.self.href");
final Response response = RestAssured.given().contentType(MediaType.APPLICATION_JSON_VALUE).body(book).post(API_URI);
return response.jsonPath().get("_links.self.href");
}
}

16
spring-cloud/spring-cloud-rest/spring-cloud-rest-client-1/src/test/java/org/baeldung/SessionLiveTest.java → spring-cloud/spring-cloud-rest/spring-cloud-rest-books-api/src/test/java/org/baeldung/SessionLiveTest.java
View File

@ -18,7 +18,7 @@ import org.springframework.test.context.junit4.SpringRunner;
import redis.clients.jedis.Jedis;
@RunWith(SpringRunner.class)
@SpringBootTest(classes = { SpringCloudRestClientApplication.class, SessionConfig.class }, webEnvironment = WebEnvironment.DEFINED_PORT)
@SpringBootTest(classes = { BooksApiApplication.class, SessionConfig.class }, webEnvironment = WebEnvironment.DEFINED_PORT)
public class SessionLiveTest {
private Jedis jedis;
@ -45,11 +45,7 @@ public class SessionLiveTest {
@Test
public void givenAuthorizedUser_whenDeleteSession_thenUnauthorized() {
// authorize User
Response response = RestAssured.given()
.auth()
.preemptive()
.basic("user", "userPass")
.get(API_URI);
Response response = RestAssured.given().auth().preemptive().basic("user", "userPass").get(API_URI);
assertEquals(HttpStatus.OK.value(), response.getStatusCode());
final String sessionCookie = response.getCookie("SESSION");
@ -58,18 +54,14 @@ public class SessionLiveTest {
assertTrue(redisResult.size() > 0);
// login with cookie
response = RestAssured.given()
.cookie("SESSION", sessionCookie)
.get(API_URI);
response = RestAssured.given().cookie("SESSION", sessionCookie).get(API_URI);
assertEquals(HttpStatus.OK.value(), response.getStatusCode());
// empty redis
jedis.flushAll();
// login with cookie again
response = RestAssured.given()
.cookie("SESSION", sessionCookie)
.get(API_URI);
response = RestAssured.given().cookie("SESSION", sessionCookie).get(API_URI);
assertEquals(HttpStatus.UNAUTHORIZED.value(), response.getStatusCode());
}
}

0
spring-cloud/spring-cloud-rest/spring-cloud-rest-client-1/src/test/resources/application.properties → spring-cloud/spring-cloud-rest/spring-cloud-rest-books-api/src/test/resources/application.properties
View File

19
spring-cloud/spring-cloud-rest/spring-cloud-rest-client-2/src/test/resources/application.properties
View File

@ -1,19 +0,0 @@
#### cloud
spring.application.name=spring-cloud-eureka-client
server.port=8084
eureka.client.serviceUrl.defaultZone=${EUREKA_URI:http://system:systemPass@localhost:8761/eureka}
eureka.instance.preferIpAddress=true
#### persistence
spring.datasource.driver-class-name=org.h2.Driver
spring.datasource.url=jdbc:h2:mem:cloud_rest;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE
spring.datasource.username=sa
spring.datasource.password=
#### security
security.basic.enabled=true
security.basic.path=/**
security.user.name=user
security.user.password=userPass
security.user.role=USER
security.sessions=always

24
spring-cloud/spring-cloud-rest/spring-cloud-rest-config/.gitignore vendored Normal file
View File

@ -0,0 +1,24 @@
target/
!.mvn/wrapper/maven-wrapper.jar
### STS ###
.apt_generated
.classpath
.factorypath
.project
.settings
.springBeans
### IntelliJ IDEA ###
.idea
*.iws
*.iml
*.ipr
### NetBeans ###
nbproject/private/
build/
nbbuild/
dist/
nbdist/
.nb-gradle/

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