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Merge branch 'master' of https://github.com/eugenp/tutorials into BAEL-2550

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This commit is contained in:
Erhan KARAKAYA 2019-02-03 21:38:38 +03:00
commit 5f23e39332
159 changed files with 3371 additions and 304 deletions
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34
core-java-8/src/test/java/com/baeldung/java8/lambda/methodreference/Bicycle.java Normal file
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@ -0,0 +1,34 @@
package com.baeldung.java8.lambda.methodreference;
public class Bicycle {
private String brand;
private Integer frameSize;
public Bicycle(String brand) {
this.brand = brand;
this.frameSize = 0;
}
public Bicycle(String brand, Integer frameSize) {
this.brand = brand;
this.frameSize = frameSize;
}
public String getBrand() {
return brand;
}
public void setBrand(String brand) {
this.brand = brand;
}
public Integer getFrameSize() {
return frameSize;
}
public void setFrameSize(Integer frameSize) {
this.frameSize = frameSize;
}
}

13
core-java-8/src/test/java/com/baeldung/java8/lambda/methodreference/BicycleComparator.java Normal file
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@ -0,0 +1,13 @@
package com.baeldung.java8.lambda.methodreference;
import java.util.Comparator;
public class BicycleComparator implements Comparator<Bicycle> {
@Override
public int compare(Bicycle a, Bicycle b) {
return a.getFrameSize()
.compareTo(b.getFrameSize());
}
}

78
core-java-8/src/test/java/com/baeldung/java8/lambda/methodreference/MethodReferenceExamples.java Normal file
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@ -0,0 +1,78 @@
package com.baeldung.java8.lambda.methodreference;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.function.BiFunction;
import org.junit.Test;
public class MethodReferenceExamples {
private static <T> void doNothingAtAll(Object... o) {
}
;
@Test
public void referenceToStaticMethod() {
List<String> messages = Arrays.asList("Hello", "Baeldung", "readers!");
messages.forEach((word) -> {
System.out.println(word);
});
messages.forEach(System.out::println);
}
@Test
public void referenceToInstanceMethodOfParticularObject() {
BicycleComparator bikeFrameSizeComparator = new BicycleComparator();
createBicyclesList().stream()
.sorted((a, b) -> bikeFrameSizeComparator.compare(a, b));
createBicyclesList().stream()
.sorted(bikeFrameSizeComparator::compare);
}
@Test
public void referenceToInstanceMethodOfArbitratyObjectOfParticularType() {
List<Integer> numbers = Arrays.asList(5, 3, 50, 24, 40, 2, 9, 18);
numbers.stream()
.sorted((a, b) -> Integer.compare(a, b));
numbers.stream()
.sorted(Integer::compare);
}
@Test
public void referenceToConstructor() {
BiFunction<String, Integer, Bicycle> bikeCreator = (brand, frameSize) -> new Bicycle(brand, frameSize);
BiFunction<String, Integer, Bicycle> bikeCreatorMethodReference = Bicycle::new;
List<Bicycle> bikes = new ArrayList<>();
bikes.add(bikeCreator.apply("Giant", 50));
bikes.add(bikeCreator.apply("Scott", 20));
bikes.add(bikeCreatorMethodReference.apply("Trek", 35));
bikes.add(bikeCreatorMethodReference.apply("GT", 40));
}
@Test
public void referenceToConstructorSimpleExample() {
List<String> bikeBrands = Arrays.asList("Giant", "Scott", "Trek", "GT");
bikeBrands.stream()
.map(Bicycle::new)
.toArray(Bicycle[]::new);
}
@Test
public void limitationsAndAdditionalExamples() {
createBicyclesList().forEach(b -> System.out.printf("Bike brand is '%s' and frame size is '%d'%n", b.getBrand(), b.getFrameSize()));
createBicyclesList().forEach((o) -> MethodReferenceExamples.doNothingAtAll(o));
}
private List<Bicycle> createBicyclesList() {
List<Bicycle> bikes = new ArrayList<>();
bikes.add(new Bicycle("Giant", 50));
bikes.add(new Bicycle("Scott", 20));
bikes.add(new Bicycle("Trek", 35));
bikes.add(new Bicycle("GT", 40));
return bikes;
}
}

16
core-java-collections-list/pom.xml
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@ -36,6 +36,22 @@
<version>${lombok.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>net.sf.trove4j</groupId>
<artifactId>trove4j</artifactId>
<version>3.0.2</version>
</dependency>
<dependency>
<groupId>it.unimi.dsi</groupId>
<artifactId>fastutil</artifactId>
<version>8.1.0</version>
</dependency>
<dependency>
<groupId>colt</groupId>
<artifactId>colt</artifactId>
<version>1.2.0</version>
</dependency>
</dependencies>
<properties>

52
core-java-collections-list/src/main/java/com/baeldung/list/primitive/PrimitiveCollections.java Normal file
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@ -0,0 +1,52 @@
package com.baeldung.list.primitive;
import com.google.common.primitives.ImmutableIntArray;
import com.google.common.primitives.Ints;
import gnu.trove.list.array.TIntArrayList;
import it.unimi.dsi.fastutil.ints.IntArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.OptionalDouble;
import java.util.function.IntPredicate;
import java.util.stream.IntStream;
public class PrimitiveCollections {
public static void main(String[] args) {
int[] primitives = new int[] {5, 10, 0, 2, -8};
guavaPrimitives(primitives);
intStream(primitives);
TIntArrayList tList = new TIntArrayList(primitives);
cern.colt.list.IntArrayList coltList = new cern.colt.list.IntArrayList(primitives);
IntArrayList fastUtilList = new IntArrayList(primitives);
System.out.println(tList);
System.out.println(coltList);
System.out.println(fastUtilList);
}
private static void intStream(int[] primitives) {
IntStream stream = IntStream.of(5, 10, 0, 2, -8);
IntStream newStream = IntStream.of(primitives);
OptionalDouble average = stream.filter(i -> i > 0).average();
}
private static void guavaPrimitives(int[] primitives) {
ImmutableIntArray immutableIntArray = ImmutableIntArray.builder().addAll(primitives).build();
System.out.println(immutableIntArray);
}
}

1
core-java-io/README.md
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@ -37,3 +37,4 @@
- [Guide to BufferedReader](https://www.baeldung.com/java-buffered-reader)
- [How to Get the File Extension of a File in Java](http://www.baeldung.com/java-file-extension)
- [Getting a File’s Mime Type in Java](http://www.baeldung.com/java-file-mime-type)
- [Create a Directory in Java](https://www.baeldung.com/java-create-directory)

64
core-java-io/src/main/java/com/baeldung/files/ListFiles.java Normal file
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@ -0,0 +1,64 @@
package com.baeldung.files;
import java.io.File;
import java.io.IOException;
import java.nio.file.DirectoryStream;
import java.nio.file.FileVisitResult;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.SimpleFileVisitor;
import java.nio.file.attribute.BasicFileAttributes;
import java.util.HashSet;
import java.util.Set;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class ListFiles {
public static final int DEPTH = 1;
public Set<String> listFilesUsingJavaIO(String dir) {
return Stream.of(new File(dir).listFiles())
.filter(file -> !file.isDirectory())
.map(File::getName)
.collect(Collectors.toSet());
}
public Set<String> listFilesUsingFileWalk(String dir, int depth) throws IOException {
try (Stream<Path> stream = Files.walk(Paths.get(dir), depth)) {
return stream.filter(file -> !Files.isDirectory(file))
.map(Path::getFileName)
.map(Path::toString)
.collect(Collectors.toSet());
}
}
public Set<String> listFilesUsingFileWalkAndVisitor(String dir) throws IOException {
Set<String> fileList = new HashSet<>();
Files.walkFileTree(Paths.get(dir), new SimpleFileVisitor<Path>() {
@Override
public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
if (!Files.isDirectory(file)) {
fileList.add(file.getFileName()
.toString());
}
return FileVisitResult.CONTINUE;
}
});
return fileList;
}
public Set<String> listFilesUsingDirectoryStream(String dir) throws IOException {
Set<String> fileList = new HashSet<>();
try (DirectoryStream<Path> stream = Files.newDirectoryStream(Paths.get(dir))) {
for (Path path : stream) {
if (!Files.isDirectory(path)) {
fileList.add(path.getFileName()
.toString());
}
}
}
return fileList;
}
}

46
core-java-io/src/test/java/com/baeldung/file/ListFilesUnitTest.java Normal file
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package com.baeldung.file;
import static org.junit.Assert.assertEquals;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;
import org.junit.Test;
import com.baeldung.files.ListFiles;
public class ListFilesUnitTest {
private ListFiles listFiles = new ListFiles();
private String DIRECTORY = "src/test/resources/listFilesUnitTestFolder";
private static final int DEPTH = 1;
private Set<String> EXPECTED_FILE_LIST = new HashSet<String>() {
{
add("test.xml");
add("employee.json");
add("students.json");
add("country.txt");
}
};
@Test
public void givenDir_whenUsingJAVAIO_thenListAllFiles() throws IOException {
assertEquals(EXPECTED_FILE_LIST, listFiles.listFilesUsingJavaIO(DIRECTORY));
}
@Test
public void givenDir_whenWalkingTree_thenListAllFiles() throws IOException {
assertEquals(EXPECTED_FILE_LIST, listFiles.listFilesUsingFileWalk(DIRECTORY,DEPTH));
}
@Test
public void givenDir_whenWalkingTreeWithVisitor_thenListAllFiles() throws IOException {
assertEquals(EXPECTED_FILE_LIST, listFiles.listFilesUsingFileWalkAndVisitor(DIRECTORY));
}
@Test
public void givenDir_whenUsingDirectoryStream_thenListAllFiles() throws IOException {
assertEquals(EXPECTED_FILE_LIST, listFiles.listFilesUsingDirectoryStream(DIRECTORY));
}
}

1
core-java-io/src/test/resources/listFilesUnitTestFolder/country.txt Normal file
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@ -0,0 +1 @@
This is a sample txt file for unit test ListFilesUnitTest

1
core-java-io/src/test/resources/listFilesUnitTestFolder/employee.json Normal file
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@ -0,0 +1 @@
{}

1
core-java-io/src/test/resources/listFilesUnitTestFolder/students.json Normal file
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@ -0,0 +1 @@
{}

1
core-java-io/src/test/resources/listFilesUnitTestFolder/test.xml Normal file
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@ -0,0 +1 @@
<xml></xml>

14
core-java-lang/src/main/java/com/baeldung/scope/BracketScopeExample.java Normal file
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@ -0,0 +1,14 @@
package org.baeldung.variable.scope.examples;
public class BracketScopeExample {
public void mathOperationExample() {
Integer sum = 0;
{
Integer number = 2;
sum = sum + number;
}
// compiler error, number cannot be solved as a variable
// number++;
}
}

14
core-java-lang/src/main/java/com/baeldung/scope/ClassScopeExample.java Normal file
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@ -0,0 +1,14 @@
package org.baeldung.variable.scope.examples;
public class ClassScopeExample {
Integer amount = 0;
public void exampleMethod() {
amount++;
}
public void anotherExampleMethod() {
Integer anotherAmount = amount + 4;
}
}

18
core-java-lang/src/main/java/com/baeldung/scope/LoopScopeExample.java Normal file
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@ -0,0 +1,18 @@
package org.baeldung.variable.scope.examples;
import java.util.Arrays;
import java.util.List;
public class LoopScopeExample {
List<String> listOfNames = Arrays.asList("Joe", "Susan", "Pattrick");
public void iterationOfNames() {
String allNames = "";
for (String name : listOfNames) {
allNames = allNames + " " + name;
}
// compiler error, name cannot be resolved to a variable
// String lastNameUsed = name;
}
}

13
core-java-lang/src/main/java/com/baeldung/scope/MethodScopeExample.java Normal file
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@ -0,0 +1,13 @@
package org.baeldung.variable.scope.examples;
public class MethodScopeExample {
public void methodA() {
Integer area = 2;
}
public void methodB() {
// compiler error, area cannot be resolved to a variable
// area = area + 2;
}
}

12
core-java-lang/src/main/java/com/baeldung/scope/NestedScopesExample.java Normal file
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@ -0,0 +1,12 @@
package org.baeldung.variable.scope.examples;
public class NestedScopesExample {
String title = "Baeldung";
public void printTitle() {
System.out.println(title);
String title = "John Doe";
System.out.println(title);
}
}

1
core-java/README.md
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@ -46,3 +46,4 @@
- [Graphs in Java](https://www.baeldung.com/java-graphs)
- [Console I/O in Java](http://www.baeldung.com/java-console-input-output)
- [Formatting with printf() in Java](https://www.baeldung.com/java-printstream-printf)
- [Retrieve Fields from a Java Class Using Reflection](https://www.baeldung.com/java-reflection-class-fields)

18
core-java/src/test/java/com/baeldung/bitwiseoperator/test/BitwiseOperatorUnitTest.java
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@ -10,7 +10,7 @@ public class BitwiseOperatorUnitTest {
int value1 = 6;
int value2 = 5;
int result = value1 & value2;
assertEquals(result, 4);
assertEquals(4, result);
}
@Test
@ -18,7 +18,7 @@ public class BitwiseOperatorUnitTest {
int value1 = 6;
int value2 = 5;
int result = value1 | value2;
assertEquals(result, 7);
assertEquals(7, result);
}
@Test
@ -26,7 +26,7 @@ public class BitwiseOperatorUnitTest {
int value1 = 6;
int value2 = 5;
int result = value1 ^ value2;
assertEquals(result, 3);
assertEquals(3, result);
}
@Test
@ -40,42 +40,42 @@ public class BitwiseOperatorUnitTest {
public void givenOnePositiveInteger_whenSignedRightShiftOperator_thenNewDecimalNumber() {
int value = 12;
int rightShift = value >> 2;
assertEquals(rightShift, 3);
assertEquals(3, rightShift);
}
@Test
public void givenOneNegativeInteger_whenSignedRightShiftOperator_thenNewDecimalNumber() {
int value = -12;
int rightShift = value >> 2;
assertEquals(rightShift, -3);
assertEquals(-3, rightShift);
}
@Test
public void givenOnePositiveInteger_whenLeftShiftOperator_thenNewDecimalNumber() {
int value = 12;
int leftShift = value << 2;
assertEquals(leftShift, 48);
assertEquals(48, leftShift);
}
@Test
public void givenOneNegativeInteger_whenLeftShiftOperator_thenNewDecimalNumber() {
int value = -12;
int leftShift = value << 2;
assertEquals(leftShift, -48);
assertEquals(-48, leftShift);
}
@Test
public void givenOnePositiveInteger_whenUnsignedRightShiftOperator_thenNewDecimalNumber() {
int value = 12;
int unsignedRightShift = value >>> 2;
assertEquals(unsignedRightShift, 3);
assertEquals(3, unsignedRightShift);
}
@Test
public void givenOneNegativeInteger_whenUnsignedRightShiftOperator_thenNewDecimalNumber() {
int value = -12;
int unsignedRightShift = value >>> 2;
assertEquals(unsignedRightShift, 1073741821);
assertEquals(1073741821, unsignedRightShift);
}
}

204
java-collections-maps/src/test/java/com/baeldung/java/map/MultiValuedMapUnitTest.java Normal file
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@ -0,0 +1,204 @@
package com.baeldung.java.map;
import static org.assertj.core.api.Assertions.assertThat;
import static org.junit.Assert.assertTrue;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import java.util.Arrays;
import java.util.Collection;
import java.util.Map;
import java.util.Map.Entry;
import org.apache.commons.collections4.MultiMapUtils;
import org.apache.commons.collections4.MultiValuedMap;
import org.apache.commons.collections4.multimap.ArrayListValuedHashMap;
import org.apache.commons.collections4.multimap.HashSetValuedHashMap;
import org.junit.Test;
public class MultiValuedMapUnitTest {
@Test
public void givenMultiValuesMap_whenPuttingMultipleValuesUsingPutMethod_thenReturningAllValues() {
MultiValuedMap<String, String> map = new ArrayListValuedHashMap<>();
map.put("key", "value1");
map.put("key", "value2");
map.put("key", "value2");
assertThat((Collection<String>) map.get("key")).containsExactly("value1", "value2", "value2");
}
@Test
public void givenMultiValuesMap_whenPuttingMultipleValuesUsingPutAllMethod_thenReturningAllValues() {
MultiValuedMap<String, String> map = new ArrayListValuedHashMap<>();
map.putAll("key", Arrays.asList("value1", "value2", "value2"));
assertThat((Collection<String>) map.get("key")).containsExactly("value1", "value2", "value2");
}
@Test
public void givenMultiValuesMap_whenGettingValueUsingGetMethod_thenReturningValue() {
MultiValuedMap<String, String> map = new ArrayListValuedHashMap<>();
map.put("key", "value");
assertThat((Collection<String>) map.get("key")).containsExactly("value");
}
@Test
public void givenMultiValuesMap_whenUsingEntriesMethod_thenReturningMappings() {
MultiValuedMap<String, String> map = new ArrayListValuedHashMap<>();
map.put("key", "value1");
map.put("key", "value2");
Collection<Entry<String, String>> entries = (Collection<Entry<String, String>>) map.entries();
for(Map.Entry<String,String> entry : entries) {
assertThat(entry.getKey()).contains("key");
assertTrue(entry.getValue().equals("value1") || entry.getValue().equals("value2") );
}
}
@Test
public void givenMultiValuesMap_whenUsingKeysMethod_thenReturningAllKeys() {
MultiValuedMap<String, String> map = new ArrayListValuedHashMap<>();
map.put("key", "value");
map.put("key1", "value1");
map.put("key2", "value2");
assertThat(((Collection<String>) map.keys())).contains("key", "key1", "key2");
}
@Test
public void givenMultiValuesMap_whenUsingKeySetMethod_thenReturningAllKeys() {
MultiValuedMap<String, String> map = new ArrayListValuedHashMap<>();
map.put("key", "value");
map.put("key1", "value1");
map.put("key2", "value2");
assertThat((Collection<String>) map.keySet()).contains("key", "key1", "key2");
}
@Test
public void givenMultiValuesMap_whenUsingValuesMethod_thenReturningAllValues() {
MultiValuedMap<String, String> map = new ArrayListValuedHashMap<>();
map.put("key", "value");
map.put("key1", "value1");
map.put("key2", "value2");
assertThat(((Collection<String>) map.values())).contains("value", "value1", "value2");
}
@Test
public void givenMultiValuesMap_whenUsingRemoveMethod_thenReturningUpdatedMap() {
MultiValuedMap<String, String> map = new ArrayListValuedHashMap<>();
map.put("key", "value");
map.put("key1", "value1");
map.put("key2", "value2");
assertThat(((Collection<String>) map.values())).contains("value", "value1", "value2");
map.remove("key");
assertThat(((Collection<String>) map.values())).contains("value1", "value2");
}
@Test
public void givenMultiValuesMap_whenUsingRemoveMappingMethod_thenReturningUpdatedMapAfterMappingRemoved() {
MultiValuedMap<String, String> map = new ArrayListValuedHashMap<>();
map.put("key", "value");
map.put("key1", "value1");
map.put("key2", "value2");
assertThat(((Collection<String>) map.values())).contains("value", "value1", "value2");
map.removeMapping("key", "value");
assertThat(((Collection<String>) map.values())).contains("value1", "value2");
}
@Test
public void givenMultiValuesMap_whenUsingClearMethod_thenReturningEmptyMap() {
MultiValuedMap<String, String> map = new ArrayListValuedHashMap<>();
map.put("key", "value");
map.put("key1", "value1");
map.put("key2", "value2");
assertThat(((Collection<String>) map.values())).contains("value", "value1", "value2");
map.clear();
assertTrue(map.isEmpty());
}
@Test
public void givenMultiValuesMap_whenUsingContainsKeyMethod_thenReturningTrue() {
MultiValuedMap<String, String> map = new ArrayListValuedHashMap<>();
map.put("key", "value");
map.put("key1", "value1");
map.put("key2", "value2");
assertTrue(map.containsKey("key"));
}
@Test
public void givenMultiValuesMap_whenUsingContainsValueMethod_thenReturningTrue() {
MultiValuedMap<String, String> map = new ArrayListValuedHashMap<>();
map.put("key", "value");
map.put("key1", "value1");
map.put("key2", "value2");
assertTrue(map.containsValue("value"));
}
@Test
public void givenMultiValuesMap_whenUsingIsEmptyMethod_thenReturningFalse() {
MultiValuedMap<String, String> map = new ArrayListValuedHashMap<>();
map.put("key", "value");
map.put("key1", "value1");
map.put("key2", "value2");
assertFalse(map.isEmpty());
}
@Test
public void givenMultiValuesMap_whenUsingSizeMethod_thenReturningElementCount() {
MultiValuedMap<String, String> map = new ArrayListValuedHashMap<>();
map.put("key", "value");
map.put("key1", "value1");
map.put("key2", "value2");
assertEquals(3, map.size());
}
@Test
public void givenArrayListValuedHashMap_whenPuttingDoubleValues_thenReturningAllValues() {
MultiValuedMap<String, String> map = new ArrayListValuedHashMap<>();
map.put("key", "value1");
map.put("key", "value2");
map.put("key", "value2");
assertThat((Collection<String>) map.get("key")).containsExactly("value1", "value2", "value2");
}
@Test
public void givenHashSetValuedHashMap_whenPuttingTwiceTheSame_thenReturningOneValue() {
MultiValuedMap<String, String> map = new HashSetValuedHashMap<>();
map.put("key1", "value1");
map.put("key1", "value1");
assertThat((Collection<String>) map.get("key1")).containsExactly("value1");
}
@Test(expected = UnsupportedOperationException.class)
public void givenUnmodifiableMultiValuedMap_whenInserting_thenThrowingException() {
MultiValuedMap<String, String> map = new ArrayListValuedHashMap<>();
map.put("key", "value1");
map.put("key", "value2");
MultiValuedMap<String, String> immutableMap = MultiMapUtils.unmodifiableMultiValuedMap(map);
immutableMap.put("key", "value3");
}
}

1
java-streams/README.md
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@ -15,3 +15,4 @@
- [Stream Ordering in Java](https://www.baeldung.com/java-stream-ordering)
- [Introduction to Protonpack](https://www.baeldung.com/java-protonpack)
- [Java Stream Filter with Lambda Expression](https://www.baeldung.com/java-stream-filter-lambda)
- [Counting Matches on a Stream Filter](https://www.baeldung.com/java-stream-filter-count)

6
java-strings/pom.xml
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@ -95,6 +95,12 @@
<version>1.4</version>
</dependency>
<dependency>
<groupId>org.ahocorasick</groupId>
<artifactId>ahocorasick</artifactId>
<version>0.4.0</version>
</dependency>
</dependencies>
<build>

83
java-strings/src/main/java/com/baeldung/string/MatchWords.java Normal file
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@ -0,0 +1,83 @@
package com.baeldung.string;
import org.ahocorasick.trie.Emit;
import org.ahocorasick.trie.Token;
import org.ahocorasick.trie.Trie;
import java.util.*;
import java.util.function.Function;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class MatchWords {
public static boolean containsWordsIndexOf(String inputString, String[] words) {
boolean found = true;
for (String word : words) {
if (inputString.indexOf(word) == -1) {
found = false;
break;
}
}
return found;
}
public static boolean containsWords(String inputString, String[] items) {
boolean found = true;
for (String item : items) {
if (!inputString.contains(item)) {
found = false;
break;
}
}
return found;
}
public static boolean containsWordsAhoCorasick(String inputString, String[] words) {
Trie trie = Trie.builder()
.onlyWholeWords()
.addKeywords(words)
.build();
Collection<Emit> emits = trie.parseText(inputString);
emits.forEach(System.out::println);
boolean found = true;
for(String word : words) {
boolean contains = Arrays.toString(emits.toArray()).contains(word);
if (!contains) {
found = false;
break;
}
}
return found;
}
public static boolean containsWordsPatternMatch(String inputString, String[] words) {
StringBuilder regexp = new StringBuilder();
for (String word : words) {
regexp.append("(?=.*").append(word).append(")");
}
Pattern pattern = Pattern.compile(regexp.toString());
return pattern.matcher(inputString).find();
}
public static boolean containsWordsJava8(String inputString, String[] words) {
List<String> inputStringList = Arrays.asList(inputString.split(" "));
List<String> wordsList = Arrays.asList(words);
return wordsList.stream().allMatch(inputStringList::contains);
}
public static boolean containsWordsArray(String inputString, String[] words) {
List<String> inputStringList = Arrays.asList(inputString.split(" "));
List<String> wordsList = Arrays.asList(words);
return inputStringList.containsAll(wordsList);
}
}

66
java-strings/src/test/java/com/baeldung/string/MatchWordsUnitTest.java Normal file
View File

@ -0,0 +1,66 @@
package com.baeldung.string;
import org.junit.Test;
import static org.assertj.core.api.Assertions.assertThat;
public class MatchWordsUnitTest {
private final String[] words = {"hello", "Baeldung"};
private final String inputString = "hello there, Baeldung";
private final String wholeInput = "helloBaeldung";
@Test
public void givenText_whenCallingStringContains_shouldMatchWords() {
final boolean result = MatchWords.containsWords(inputString, words);
assertThat(result).isTrue();
}
@Test
public void givenText_whenCallingJava8_shouldMatchWords() {
final boolean result = MatchWords.containsWordsJava8(inputString, words);
assertThat(result).isTrue();
}
@Test
public void givenText_whenCallingJava8_shouldNotMatchWords() {
final boolean result = MatchWords.containsWordsJava8(wholeInput, words);
assertThat(result).isFalse();
}
@Test
public void givenText_whenCallingPattern_shouldMatchWords() {
final boolean result = MatchWords.containsWordsPatternMatch(inputString, words);
assertThat(result).isTrue();
}
@Test
public void givenText_whenCallingAhoCorasick_shouldMatchWords() {
final boolean result = MatchWords.containsWordsAhoCorasick(inputString, words);
assertThat(result).isTrue();
}
@Test
public void givenText_whenCallingAhoCorasick_shouldNotMatchWords() {
final boolean result = MatchWords.containsWordsAhoCorasick(wholeInput, words);
assertThat(result).isFalse();
}
@Test
public void givenText_whenCallingIndexOf_shouldMatchWords() {
final boolean result = MatchWords.containsWordsIndexOf(inputString, words);
assertThat(result).isTrue();
}
@Test
public void givenText_whenCallingArrayList_shouldMatchWords() {
final boolean result = MatchWords.containsWordsArray(inputString, words);
assertThat(result).isTrue();
}
@Test
public void givenText_whenCallingArrayList_shouldNotMatchWords() {
final boolean result = MatchWords.containsWordsArray(wholeInput, words);
assertThat(result).isFalse();
}
}

2
lombok/README.md
View File

@ -5,3 +5,5 @@
- [Lombok @Builder with Inheritance](https://www.baeldung.com/lombok-builder-inheritance)
- [Lombok Builder with Default Value](https://www.baeldung.com/lombok-builder-default-value)
- [Lombok Builder with Custom Setter](https://www.baeldung.com/lombok-builder-custom-setter)
- [Setting up Lombok with Eclipse and Intellij](https://www.baeldung.com/lombok-ide)

2
lombok/src/main/java/com/baeldung/lombok/builder/Child.java → lombok/src/main/java/com/baeldung/lombok/builder/inheritance/buildermethodname/Child.java
View File

@ -1,4 +1,4 @@
package com.baeldung.lombok.builder;
package com.baeldung.lombok.builder.inheritance.buildermethodname;
import lombok.Builder;
import lombok.Getter;

2
lombok/src/main/java/com/baeldung/lombok/builder/Parent.java → lombok/src/main/java/com/baeldung/lombok/builder/inheritance/buildermethodname/Parent.java
View File

@ -1,4 +1,4 @@
package com.baeldung.lombok.builder;
package com.baeldung.lombok.builder.inheritance.buildermethodname;
import lombok.Builder;
import lombok.Getter;

16
lombok/src/main/java/com/baeldung/lombok/builder/inheritance/buildermethodname/Student.java Normal file
View File

@ -0,0 +1,16 @@
package com.baeldung.lombok.builder.inheritance.buildermethodname;
import lombok.Builder;
import lombok.Getter;
@Getter
public class Student extends Child {
private final String schoolName;
@Builder(builderMethodName = "studentBuilder")
public Student(String parentName, int parentAge, String childName, int childAge, String schoolName) {
super(parentName, parentAge, childName, childAge);
this.schoolName = schoolName;
}
}

11
lombok/src/main/java/com/baeldung/lombok/builder/inheritance/superbuilder/Child.java Normal file
View File

@ -0,0 +1,11 @@
package com.baeldung.lombok.builder.inheritance.superbuilder;
import lombok.Getter;
import lombok.experimental.SuperBuilder;
@Getter
@SuperBuilder(toBuilder = true)
public class Child extends Parent {
private final String childName;
private final int childAge;
}

11
lombok/src/main/java/com/baeldung/lombok/builder/inheritance/superbuilder/Parent.java Normal file
View File

@ -0,0 +1,11 @@
package com.baeldung.lombok.builder.inheritance.superbuilder;
import lombok.Getter;
import lombok.experimental.SuperBuilder;
@Getter
@SuperBuilder(toBuilder = true)
public class Parent {
private final String parentName;
private final int parentAge;
}

10
lombok/src/main/java/com/baeldung/lombok/builder/inheritance/superbuilder/Student.java Normal file
View File

@ -0,0 +1,10 @@
package com.baeldung.lombok.builder.inheritance.superbuilder;
import lombok.Getter;
import lombok.experimental.SuperBuilder;
@Getter
@SuperBuilder(toBuilder = true)
public class Student extends Child {
private final String schoolName;
}

16
lombok/src/test/java/com/baeldung/lombok/builder/BuilderUnitTest.java
View File

@ -40,20 +40,4 @@ public class BuilderUnitTest {
assertThat(testImmutableClient.getName()).isEqualTo("foo");
assertThat(testImmutableClient.getId()).isEqualTo(1);
}
@Test
public void givenBuilderAtMethodLevel_ChildInheritingParentIsBuilt() {
Child child = Child.childBuilder()
.parentName("Andrea")
.parentAge(38)
.childName("Emma")
.childAge(6)
.build();
assertThat(child.getChildName()).isEqualTo("Emma");
assertThat(child.getChildAge()).isEqualTo(6);
assertThat(child.getParentName()).isEqualTo("Andrea");
assertThat(child.getParentAge()).isEqualTo(38);
}
}

40
lombok/src/test/java/com/baeldung/lombok/builder/inheritance/buildermethodname/BuilderInheritanceUsingMethodNameUnitTest.java Normal file
View File

@ -0,0 +1,40 @@
package com.baeldung.lombok.builder.inheritance.buildermethodname;
import static org.assertj.core.api.Assertions.assertThat;
import org.junit.jupiter.api.Test;
public class BuilderInheritanceUsingMethodNameUnitTest {
@Test
public void givenBuilderAtMethodLevel_ChildInheritingParentIsBuilt() {
Child child = Child.childBuilder()
.parentName("Andrea")
.parentAge(38)
.childName("Emma")
.childAge(6)
.build();
assertThat(child.getChildName()).isEqualTo("Emma");
assertThat(child.getChildAge()).isEqualTo(6);
assertThat(child.getParentName()).isEqualTo("Andrea");
assertThat(child.getParentAge()).isEqualTo(38);
}
@Test
public void givenSuperBuilderOnAllThreeLevels_StudentInheritingChildAndParentIsBuilt() {
Student student = Student.studentBuilder()
.parentName("Andrea")
.parentAge(38)
.childName("Emma")
.childAge(6)
.schoolName("Baeldung High School")
.build();
assertThat(student.getChildName()).isEqualTo("Emma");
assertThat(student.getChildAge()).isEqualTo(6);
assertThat(student.getParentName()).isEqualTo("Andrea");
assertThat(student.getParentAge()).isEqualTo(38);
assertThat(student.getSchoolName()).isEqualTo("Baeldung High School");
}
}

96
lombok/src/test/java/com/baeldung/lombok/builder/inheritance/superbuilder/BuilderInheritanceUsingSuperBuilderUnitTest.java Normal file
View File

@ -0,0 +1,96 @@
package com.baeldung.lombok.builder.inheritance.superbuilder;
import static org.assertj.core.api.Assertions.assertThat;
import org.junit.jupiter.api.Test;
public class BuilderInheritanceUsingSuperBuilderUnitTest {
@Test
public void givenSuperBuilderOnParentAndOnChild_ChildInheritingParentIsBuilt() {
Child child = Child.builder()
.parentName("Andrea")
.parentAge(38)
.childName("Emma")
.childAge(6)
.build();
assertThat(child.getChildName()).isEqualTo("Emma");
assertThat(child.getChildAge()).isEqualTo(6);
assertThat(child.getParentName()).isEqualTo("Andrea");
assertThat(child.getParentAge()).isEqualTo(38);
}
@Test
public void givenSuperBuilderOnParent_StandardBuilderIsBuilt() {
Parent parent = Parent.builder()
.parentName("Andrea")
.parentAge(38)
.build();
assertThat(parent.getParentName()).isEqualTo("Andrea");
assertThat(parent.getParentAge()).isEqualTo(38);
}
@Test
public void givenToBuilderIsSetToTrueOnParentAndChild_DeepCopyViaBuilderIsPossible() {
Child child1 = Child.builder()
.parentName("Andrea")
.parentAge(38)
.childName("Emma")
.childAge(6)
.build();
Child child2 = child1.toBuilder()
.childName("Anna")
.build();
assertThat(child2.getChildName()).isEqualTo("Anna");
assertThat(child2.getChildAge()).isEqualTo(6);
assertThat(child2.getParentName()).isEqualTo("Andrea");
assertThat(child2.getParentAge()).isEqualTo(38);
}
@Test
public void givenSuperBuilderOnAllThreeLevels_StudentInheritingChildAndParentIsBuilt() {
Student student = Student.builder()
.parentName("Andrea")
.parentAge(38)
.childName("Emma")
.childAge(6)
.schoolName("Baeldung High School")
.build();
assertThat(student.getChildName()).isEqualTo("Emma");
assertThat(student.getChildAge()).isEqualTo(6);
assertThat(student.getParentName()).isEqualTo("Andrea");
assertThat(student.getParentAge()).isEqualTo(38);
assertThat(student.getSchoolName()).isEqualTo("Baeldung High School");
}
@Test
public void givenToBuilderIsSetToTrueOnParentChildAndStudent_DeepCopyViaBuilderIsPossible() {
Student student1 = Student.builder()
.parentName("Andrea")
.parentAge(38)
.childName("Emma")
.childAge(6)
.schoolName("School 1")
.build();
Student student2 = student1.toBuilder()
.childName("Anna")
.schoolName("School 2")
.build();
assertThat(student2.getChildName()).isEqualTo("Anna");
assertThat(student2.getChildAge()).isEqualTo(6);
assertThat(student2.getParentName()).isEqualTo("Andrea");
assertThat(student2.getParentAge()).isEqualTo(38);
assertThat(student2.getSchoolName()).isEqualTo("School 2");
}
}

13
mapstruct/pom.xml
View File

@ -30,6 +30,11 @@
<version>${springframework.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${org.projectlombok.version}</version>
</dependency>
</dependencies>
<build>
@ -48,6 +53,11 @@
<artifactId>mapstruct-processor</artifactId>
<version>${org.mapstruct.version}</version>
</path>
<path>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${org.projectlombok.version}</version>
</path>
</annotationProcessorPaths>
</configuration>
</plugin>
@ -55,10 +65,11 @@
</build>
<properties>
<org.mapstruct.version>1.1.0.Final</org.mapstruct.version>
<org.mapstruct.version>1.3.0.Beta2</org.mapstruct.version>
<springframework.version>4.3.4.RELEASE</springframework.version>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<org.projectlombok.version>1.18.4</org.projectlombok.version>
</properties>
</project>

11
mapstruct/src/main/java/com/baeldung/dto/CarDTO.java Normal file
View File

@ -0,0 +1,11 @@
package com.baeldung.dto;
import lombok.Getter;
import lombok.Setter;
@Getter
@Setter
public class CarDTO {
private int id;
private String name;
}

33
mapstruct/src/main/java/com/baeldung/dto/PersonDTO.java Normal file
View File

@ -0,0 +1,33 @@
package com.baeldung.dto;
public class PersonDTO {
private String id;
private String name;
public PersonDTO() {
}
public PersonDTO(String id, String name) {
super();
this.id = id;
this.name = name;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}

11
mapstruct/src/main/java/com/baeldung/entity/Car.java Normal file
View File

@ -0,0 +1,11 @@
package com.baeldung.entity;
import lombok.Getter;
import lombok.Setter;
@Getter
@Setter
public class Car {
private int id;
private String name;
}

33
mapstruct/src/main/java/com/baeldung/entity/Person.java Normal file
View File

@ -0,0 +1,33 @@
package com.baeldung.entity;
public class Person {
private String id;
private String name;
public Person() {
}
public Person(String id, String name) {
super();
this.id = id;
this.name = name;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}

15
mapstruct/src/main/java/com/baeldung/mapper/CarMapper.java Normal file
View File

@ -0,0 +1,15 @@
package com.baeldung.mapper;
import org.mapstruct.Mapper;
import org.mapstruct.factory.Mappers;
import com.baeldung.dto.CarDTO;
import com.baeldung.entity.Car;
@Mapper
public interface CarMapper {
CarMapper INSTANCE = Mappers.getMapper(CarMapper.class);
CarDTO carToCarDTO(Car car);
}

17
mapstruct/src/main/java/com/baeldung/mapper/PersonMapper.java Normal file
View File

@ -0,0 +1,17 @@
package com.baeldung.mapper;
import org.mapstruct.Mapper;
import org.mapstruct.Mapping;
import org.mapstruct.factory.Mappers;
import com.baeldung.dto.PersonDTO;
import com.baeldung.entity.Person;
@Mapper
public interface PersonMapper {
PersonMapper INSTANCE = Mappers.getMapper(PersonMapper.class);
@Mapping(target = "id", source = "person.id", defaultExpression = "java(java.util.UUID.randomUUID().toString())")
PersonDTO personToPersonDTO(Person person);
}

24
mapstruct/src/test/java/com/baeldung/mapper/CarMapperUnitTest.java Normal file
View File

@ -0,0 +1,24 @@
package com.baeldung.mapper;
import static org.junit.Assert.assertEquals;
import org.junit.Test;
import com.baeldung.dto.CarDTO;
import com.baeldung.entity.Car;
public class CarMapperUnitTest {
@Test
public void givenCarEntitytoCar_whenMaps_thenCorrect() {
Car entity = new Car();
entity.setId(1);
entity.setName("Toyota");
CarDTO carDto = CarMapper.INSTANCE.carToCarDTO(entity);
assertEquals(carDto.getId(), entity.getId());
assertEquals(carDto.getName(), entity.getName());
}
}

26
mapstruct/src/test/java/com/baeldung/mapper/PersonMapperUnitTest.java Normal file
View File

@ -0,0 +1,26 @@
package com.baeldung.mapper;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import org.junit.Test;
import com.baeldung.dto.PersonDTO;
import com.baeldung.entity.Person;
public class PersonMapperUnitTest {
@Test
public void givenPersonEntitytoPersonWithExpression_whenMaps_thenCorrect() {
Person entity = new Person();
entity.setName("Micheal");
PersonDTO personDto = PersonMapper.INSTANCE.personToPersonDTO(entity);
assertNull(entity.getId());
assertNotNull(personDto.getId());
assertEquals(personDto.getName(), entity.getName());
}
}

23
patterns/principles/solid/pom.xml Normal file
View File

@ -0,0 +1,23 @@
<?xml version="1.0" encoding="UTF-8"?>
<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>solid/artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<!-- https://mvnrepository.com/artifact/junit/junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>

4
patterns/principles/solid/src/main/java/com/baeldung/d/Keyboard.java Normal file
View File

@ -0,0 +1,4 @@
package com.baeldung.d;
public class Keyboard {
}

6
patterns/principles/solid/src/main/java/com/baeldung/d/Monitor.java Normal file
View File

@ -0,0 +1,6 @@
package com.baeldung.d;
public class Monitor {
}

15
patterns/principles/solid/src/main/java/com/baeldung/d/Windows98Machine.java Normal file
View File

@ -0,0 +1,15 @@
package com.baeldung.d;
public class Windows98Machine {
private final Keyboard keyboard;
private final Monitor monitor;
public Windows98Machine() {
monitor = new Monitor();
keyboard = new Keyboard();
}
}

12
patterns/principles/solid/src/main/java/com/baeldung/d/Windows98MachineDI.java Normal file
View File

@ -0,0 +1,12 @@
package com.baeldung.d;
public class Windows98MachineDI {
private final Keyboard keyboard;
private final Monitor monitor;
public Windows98MachineDI(Keyboard keyboard, Monitor monitor) {
this.keyboard = keyboard;
this.monitor = monitor;
}
}

12
patterns/principles/solid/src/main/java/com/baeldung/i/BearCarer.java Normal file
View File

@ -0,0 +1,12 @@
package com.baeldung.i;
public class BearCarer implements BearCleaner, BearFeeder {
public void washTheBear() {
//I think we missed a spot..
}
public void feedTheBear() {
//Tuna tuesdays..
}
}

5
patterns/principles/solid/src/main/java/com/baeldung/i/BearCleaner.java Normal file
View File

@ -0,0 +1,5 @@
package com.baeldung.i;
public interface BearCleaner {
void washTheBear();
}

5
patterns/principles/solid/src/main/java/com/baeldung/i/BearFeeder.java Normal file
View File

@ -0,0 +1,5 @@
package com.baeldung.i;
public interface BearFeeder {
void feedTheBear();
}

9
patterns/principles/solid/src/main/java/com/baeldung/i/BearKeeper.java Normal file
View File

@ -0,0 +1,9 @@
package com.baeldung.i;
public interface BearKeeper {
void washTheBear();
void feedTheBear();
void petTheBear();
}

5
patterns/principles/solid/src/main/java/com/baeldung/i/BearPetter.java Normal file
View File

@ -0,0 +1,5 @@
package com.baeldung.i;
public interface BearPetter {
void petTheBear();
}

8
patterns/principles/solid/src/main/java/com/baeldung/i/CrazyPerson.java Normal file
View File

@ -0,0 +1,8 @@
package com.baeldung.i;
public class CrazyPerson implements BearPetter {
public void petTheBear() {
//Good luck with that!
}
}

8
patterns/principles/solid/src/main/java/com/baeldung/l/Car.java Normal file
View File

@ -0,0 +1,8 @@
package com.baeldung.l;
public interface Car {
void turnOnEngine();
void accelerate();
}

12
patterns/principles/solid/src/main/java/com/baeldung/l/ElectricCar.java Normal file
View File

@ -0,0 +1,12 @@
package com.baeldung.l;
public class ElectricCar implements Car {
public void turnOnEngine() {
throw new AssertionError("I don't have an engine!");
}
public void accelerate() {
//this acceleration is crazy!
}
}

13
patterns/principles/solid/src/main/java/com/baeldung/l/Engine.java Normal file
View File

@ -0,0 +1,13 @@
package com.baeldung.l;
public class Engine {
public void on(){
//vroom.
}
public void powerOn(int amount){
//do something
}
}

18
patterns/principles/solid/src/main/java/com/baeldung/l/MotorCar.java Normal file
View File

@ -0,0 +1,18 @@
package com.baeldung.l;
public class MotorCar implements Car {
private Engine engine;
//Constructors, getters + setters
public void turnOnEngine() {
//turn on the engine!
engine.on();
}
public void accelerate() {
//move forward!
engine.powerOn(1000);
}
}

10
patterns/principles/solid/src/main/java/com/baeldung/o/Guitar.java Normal file
View File

@ -0,0 +1,10 @@
package com.baeldung.o;
public class Guitar {
private String make;
private String model;
private int volume;
//Constructors, getters & setters
}

9
patterns/principles/solid/src/main/java/com/baeldung/o/SuperCoolGuitarWithFlames.java Normal file
View File

@ -0,0 +1,9 @@
package com.baeldung.o;
public class SuperCoolGuitarWithFlames extends Guitar {
private String flameColour;
//constructor, getters + setters
}

27
patterns/principles/solid/src/main/java/com/baeldung/s/BadBook.java Normal file
View File

@ -0,0 +1,27 @@
package com.baeldung.s;
public class BadBook {
private String name;
private String author;
private String text;
//constructor, getters and setters
//methods that directly relate to the book properties
public String replaceWordInText(String word){
return text.replaceAll(word, text);
}
public boolean isWordInText(String word){
return text.contains(word);
}
//methods for outputting text to console - should this really be here?
void printTextToConsole(){
//our code for formatting and printing the text
}
}

13
patterns/principles/solid/src/main/java/com/baeldung/s/BookPrinter.java Normal file
View File

@ -0,0 +1,13 @@
package com.baeldung.s;
public class BookPrinter {
//methods for outputting text
void printTextToConsole(String text){
//our code for formatting and printing the text
}
void printTextToAnotherMedium(String text){
//code for writing to any other location..
}
}

20
patterns/principles/solid/src/main/java/com/baeldung/s/GoodBook.java Normal file
View File

@ -0,0 +1,20 @@
package com.baeldung.s;
public class GoodBook {
private String name;
private String author;
private String text;
//constructor, getters and setters
//methods that directly relate to the book properties
public String replaceWordInText(String word){
return text.replaceAll(word, text);
}
public boolean isWordInText(String word){
return text.contains(word);
}
}

1
persistence-modules/hibernate5/README.md
View File

@ -29,3 +29,4 @@
- [Hibernate Named Query](https://www.baeldung.com/hibernate-named-query)
- [Using c3p0 with Hibernate](https://www.baeldung.com/hibernate-c3p0)
- [Persist a JSON Object Using Hibernate](https://www.baeldung.com/hibernate-persist-json-object)
- [Common Hibernate Exceptions](https://www.baeldung.com/hibernate-exceptions)

30
persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/Student.java
View File

@ -12,12 +12,40 @@ public class Student {
@GeneratedValue(strategy = GenerationType.SEQUENCE)
private long studentId;
private String name;
private int age;
public Student() {
}
public Student(String name, int age) {
this.name = name;
this.age = age;
}
public long getStudentId() {
return studentId;
}
public void setStudent_id(long studentId) {
public void setStudentId(long studentId) {
this.studentId = studentId;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}

87
persistence-modules/hibernate5/src/test/java/com/baeldung/hibernate/aggregatefunctions/AggregateFunctionsIntegrationTest.java Normal file
View File

@ -0,0 +1,87 @@
package com.baeldung.hibernate.aggregatefunctions;
import static org.assertj.core.api.Assertions.assertThat;
import java.io.IOException;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import com.baeldung.hibernate.HibernateUtil;
import com.baeldung.hibernate.pojo.Student;
public class AggregateFunctionsIntegrationTest {
private static Session session;
private static Transaction transaction;
@BeforeClass
public static final void setup() throws HibernateException, IOException {
session = HibernateUtil.getSessionFactory()
.openSession();
transaction = session.beginTransaction();
Student jonas = new Student("Jonas", 22);
session.save(jonas);
Student sally = new Student("Sally", 20);
session.save(sally);
Student simon = new Student("Simon", 25);
session.save(simon);
Student raven = new Student("Raven", 21);
session.save(raven);
Student sam = new Student("Sam", 23);
session.save(sam);
}
@AfterClass
public static final void teardown() {
if (session != null) {
transaction.rollback();
session.close();
}
}
@Test
public void whenMaxAge_ThenReturnValue() {
int maxAge = (int) session.createQuery("SELECT MAX(age) from Student")
.getSingleResult();
assertThat(maxAge).isEqualTo(25);
}
@Test
public void whenMinAge_ThenReturnValue() {
int minAge = (int) session.createQuery("SELECT MIN(age) from Student")
.getSingleResult();
assertThat(minAge).isEqualTo(20);
}
@Test
public void whenAverageAge_ThenReturnValue() {
Double avgAge = (Double) session.createQuery("SELECT AVG(age) from Student")
.getSingleResult();
assertThat(avgAge).isEqualTo(22.2);
}
@Test
public void whenCountAll_ThenReturnValue() {
Long totalStudents = (Long) session.createQuery("SELECT COUNT(*) from Student")
.getSingleResult();
assertThat(totalStudents).isEqualTo(5);
}
@Test
public void whenSumOfAllAges_ThenReturnValue() {
Long sumOfAllAges = (Long) session.createQuery("SELECT SUM(age) from Student")
.getSingleResult();
assertThat(sumOfAllAges).isEqualTo(111);
}
}

1
persistence-modules/java-jpa/README.md
View File

@ -4,3 +4,4 @@
- [A Guide to Stored Procedures with JPA](http://www.baeldung.com/jpa-stored-procedures)
- [Fixing the JPA error “java.lang.String cannot be cast to Ljava.lang.String;”](https://www.baeldung.com/jpa-error-java-lang-string-cannot-be-cast)
- [JPA Entity Graph](https://www.baeldung.com/jpa-entity-graph)
- [JPA 2.2 Support for Java 8 Date/Time Types](https://www.baeldung.com/jpa-java-time)

19
persistence-modules/spring-boot-h2/spring-boot-h2-database/src/test/java/com/baeldung/SpringContextIntegrationTest.java Normal file
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@ -0,0 +1,19 @@
package com.baeldung;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.support.AnnotationConfigContextLoader;
import org.springframework.test.context.web.WebAppConfiguration;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(loader = AnnotationConfigContextLoader.class)
@WebAppConfiguration
public class SpringContextIntegrationTest {
@Test
public void whenSpringContextIsBootstrapped_thenNoExceptions() {
}
}

19
persistence-modules/spring-jpa/src/test/java/com/baeldung/SpringContextIntegrationTest.java Normal file
View File

@ -0,0 +1,19 @@
package com.baeldung;
import org.baeldung.config.PersistenceJPAConfigL2Cache;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.support.AnnotationConfigContextLoader;
import org.springframework.test.context.web.WebAppConfiguration;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = { PersistenceJPAConfigL2Cache.class }, loader = AnnotationConfigContextLoader.class)
@WebAppConfiguration
public class SpringContextIntegrationTest {
@Test
public void whenSpringContextIsBootstrapped_thenNoExceptions() {
}
}

2
pom.xml
View File

@ -568,6 +568,7 @@
<module>rsocket</module>
<module>rxjava</module>
<module>rxjava-2</module>
<module>software-security/sql-injection-samples</module>
</modules>
@ -732,6 +733,7 @@
<module>spring-security-mvc-boot</module>
<module>spring-security-mvc-custom</module>
<module>spring-security-mvc-digest-auth</module>
<module>spring-security-mvc-jsonview</module>
<module>spring-security-mvc-ldap</module>
<module>spring-security-mvc-login</module>
<module>spring-security-mvc-persisted-remember-me</module>

25
software-security/sql-injection-samples/.gitignore vendored Normal file
View File

@ -0,0 +1,25 @@
/target/
!.mvn/wrapper/maven-wrapper.jar
### STS ###
.apt_generated
.classpath
.factorypath
.project
.settings
.springBeans
.sts4-cache
### IntelliJ IDEA ###
.idea
*.iws
*.iml
*.ipr
### NetBeans ###
/nbproject/private/
/build/
/nbbuild/
/dist/
/nbdist/
/.nb-gradle/

61
software-security/sql-injection-samples/pom.xml Normal file
View File

@ -0,0 +1,61 @@
<?xml version="1.0" encoding="UTF-8"?>
<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>
<parent>
<artifactId>parent-boot-2</artifactId>
<groupId>com.baeldung</groupId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../../parent-boot-2</relativePath>
</parent>
<groupId>com.baeldung</groupId>
<artifactId>sql-injection-samples</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>sql-injection-samples</name>
<description>Sample SQL Injection tests</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.apache.derby</groupId>
<artifactId>derby</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

169
software-security/sql-injection-samples/src/main/java/com/baeldung/examples/security/sql/AccountDAO.java Normal file
View File

@ -0,0 +1,169 @@
/**
*
*/
package com.baeldung.examples.security.sql;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import javax.sql.DataSource;
import org.springframework.stereotype.Component;
/**
* @author Philippe
*
*/
@Component
public class AccountDAO {
private final DataSource dataSource;
public AccountDAO(DataSource dataSource) {
this.dataSource = dataSource;
}
/**
* Return all accounts owned by a given customer,given his/her external id
*
* @param customerId
* @return
*/
public List<AccountDTO> unsafeFindAccountsByCustomerId(String customerId) {
String sql = "select " + "customer_id,acc_number,branch_id,balance from Accounts where customer_id = '" + customerId + "'";
try (Connection c = dataSource.getConnection();
ResultSet rs = c.createStatement()
.executeQuery(sql)) {
List<AccountDTO> accounts = new ArrayList<>();
while (rs.next()) {
AccountDTO acc = AccountDTO.builder()
.customerId(rs.getString("customer_id"))
.branchId(rs.getString("branch_id"))
.accNumber(rs.getString("acc_number"))
.balance(rs.getBigDecimal("balance"))
.build();
accounts.add(acc);
}
return accounts;
} catch (SQLException ex) {
throw new RuntimeException(ex);
}
}
/**
* Return all accounts owned by a given customer,given his/her external id
*
* @param customerId
* @return
*/
public List<AccountDTO> safeFindAccountsByCustomerId(String customerId) {
String sql = "select " + "customer_id,acc_number,branch_id,balance from Accounts where customer_id = ?";
try (Connection c = dataSource.getConnection(); PreparedStatement p = c.prepareStatement(sql)) {
p.setString(1, customerId);
ResultSet rs = p.executeQuery();
List<AccountDTO> accounts = new ArrayList<>();
while (rs.next()) {
AccountDTO acc = AccountDTO.builder()
.customerId(rs.getString("customerId"))
.branchId(rs.getString("branch_id"))
.accNumber(rs.getString("acc_number"))
.balance(rs.getBigDecimal("balance"))
.build();
accounts.add(acc);
}
return accounts;
} catch (SQLException ex) {
throw new RuntimeException(ex);
}
}
private static final Set<String> VALID_COLUMNS_FOR_ORDER_BY = Stream.of("acc_number", "branch_id", "balance")
.collect(Collectors.toCollection(HashSet::new));
/**
* Return all accounts owned by a given customer,given his/her external id
*
* @param customerId
* @return
*/
public List<AccountDTO> safeFindAccountsByCustomerId(String customerId, String orderBy) {
String sql = "select " + "customer_id,acc_number,branch_id,balance from Accounts where customer_id = ? ";
if (VALID_COLUMNS_FOR_ORDER_BY.contains(orderBy)) {
sql = sql + " order by " + orderBy;
}
else {
throw new IllegalArgumentException("Nice try!");
}
try (Connection c = dataSource.getConnection(); PreparedStatement p = c.prepareStatement(sql)) {
p.setString(1, customerId);
ResultSet rs = p.executeQuery();
List<AccountDTO> accounts = new ArrayList<>();
while (rs.next()) {
AccountDTO acc = AccountDTO.builder()
.customerId(rs.getString("customerId"))
.branchId(rs.getString("branch_id"))
.accNumber(rs.getString("acc_number"))
.balance(rs.getBigDecimal("balance"))
.build();
accounts.add(acc);
}
return accounts;
} catch (SQLException ex) {
throw new RuntimeException(ex);
}
}
/**
* Invalid placeholder usage example
*
* @param tableName
* @return
*/
public List<AccountDTO> wrongCountRecordsByTableName(String tableName) {
try (Connection c = dataSource.getConnection();
PreparedStatement p = c.prepareStatement("select count(*) from ?")) {
p.setString(1, tableName);
ResultSet rs = p.executeQuery();
List<AccountDTO> accounts = new ArrayList<>();
while (rs.next()) {
AccountDTO acc = AccountDTO.builder()
.customerId(rs.getString("customerId"))
.branchId(rs.getString("branch_id"))
.accNumber(rs.getString("acc_number"))
.balance(rs.getBigDecimal("balance"))
.build();
accounts.add(acc);
}
return accounts;
} catch (SQLException ex) {
throw new RuntimeException(ex);
}
}
}

16
software-security/sql-injection-samples/src/main/java/com/baeldung/examples/security/sql/AccountDTO.java Normal file
View File

@ -0,0 +1,16 @@
package com.baeldung.examples.security.sql;
import java.math.BigDecimal;
import lombok.Builder;
import lombok.Data;
@Data
@Builder
public class AccountDTO {
private String customerId;
private String accNumber;
private String branchId;
private BigDecimal balance;
}

14
software-security/sql-injection-samples/src/main/java/com/baeldung/examples/security/sql/SqlInjectionSamplesApplication.java Normal file
View File

@ -0,0 +1,14 @@
package com.baeldung.examples.security.sql;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class SqlInjectionSamplesApplication {
public static void main(String[] args) {
SpringApplication.run(SqlInjectionSamplesApplication.class, args);
}
}

0
spring-rest-full/.attach_pid28499 → software-security/sql-injection-samples/src/main/resources/application.properties
View File

19
software-security/sql-injection-samples/src/main/resources/db/changelog/create-tables.xml Normal file
View File

@ -0,0 +1,19 @@
<databaseChangeLog
xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog
http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.1.xsd">
<changeSet id="create-tables" author="baeldung">
<createTable tableName="Accounts" >
<column name="id" autoIncrement="true" type="BIGINT" remarks="Internal account PK" >
<constraints primaryKey="true"/>
</column>
<column name="customer_id" type="java.sql.Types.VARCHAR(32)" remarks="External Customer Id"></column>
<column name="acc_number" type="java.sql.Types.VARCHAR(128)" remarks="External Account Number"></column>
<column name="branch_id" type="java.sql.Types.VARCHAR(32)"></column>
<column name="balance" type="CURRENCY"></column>
</createTable>
</changeSet>
</databaseChangeLog>

8
software-security/sql-injection-samples/src/main/resources/db/master-changelog.xml Normal file
View File

@ -0,0 +1,8 @@
<databaseChangeLog
xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog
http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.1.xsd">
<include file="changelog/create-tables.xml" relativeToChangelogFile="true"/>
</databaseChangeLog>

60
software-security/sql-injection-samples/src/test/java/com/baeldung/examples/security/sql/SqlInjectionSamplesApplicationUnitTest.java Normal file
View File

@ -0,0 +1,60 @@
package com.baeldung.examples.security.sql;
import static org.assertj.core.api.Assertions.assertThat;
import java.util.List;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.ActiveProfiles;
import org.springframework.test.context.junit4.SpringRunner;
import com.baeldung.examples.security.sql.AccountDAO;
import com.baeldung.examples.security.sql.AccountDTO;
@RunWith(SpringRunner.class)
@SpringBootTest
@ActiveProfiles({ "test" })
public class SqlInjectionSamplesApplicationUnitTest {
@Autowired
private AccountDAO target;
@Test
public void givenAVulnerableMethod_whenValidCustomerId_thenReturnSingleAccount() {
List<AccountDTO> accounts = target.unsafeFindAccountsByCustomerId("C1");
assertThat(accounts).isNotNull();
assertThat(accounts).isNotEmpty();
assertThat(accounts).hasSize(1);
}
@Test
public void givenAVulnerableMethod_whenHackedCustomerId_thenReturnAllAccounts() {
List<AccountDTO> accounts = target.unsafeFindAccountsByCustomerId("C1' or '1'='1");
assertThat(accounts).isNotNull();
assertThat(accounts).isNotEmpty();
assertThat(accounts).hasSize(3);
}
@Test
public void givenASafeMethod_whenHackedCustomerId_thenReturnNoAccounts() {
List<AccountDTO> accounts = target.safeFindAccountsByCustomerId("C1' or '1'='1");
assertThat(accounts).isNotNull();
assertThat(accounts).isEmpty();
}
@Test(expected = IllegalArgumentException.class)
public void givenASafeMethod_whenInvalidOrderBy_thenThroweException() {
target.safeFindAccountsByCustomerId("C1", "INVALID");
}
@Test(expected = RuntimeException.class)
public void givenWrongPlaceholderUsageMethod_whenNormalCall_thenThrowsException() {
target.wrongCountRecordsByTableName("Accounts");
}
}

6
software-security/sql-injection-samples/src/test/resources/application-test.yml Normal file
View File

@ -0,0 +1,6 @@
#
# Test profile configuration
#
spring:
datasource:
initialization-mode: always

4
software-security/sql-injection-samples/src/test/resources/data.sql Normal file
View File

@ -0,0 +1,4 @@
insert into Accounts(customer_id,acc_number,branch_id,balance) values ('C1','0001',1,1000.00);
insert into Accounts(customer_id,acc_number,branch_id,balance) values ('C2','0002',1,500.00);
insert into Accounts(customer_id,acc_number,branch_id,balance) values ('C3','0003',1,501.00);

6
software-security/sql-injection-samples/src/test/resources/schema.sql Normal file
View File

@ -0,0 +1,6 @@
create table Accounts (
customer_id varchar(16) not null,
acc_number varchar(16) not null,
branch_id decimal(8,0),
balance decimal(16,4)
);

11
spring-4/src/test/java/org/baeldung/SpringContextIntegrationTest.java
View File

@ -2,13 +2,16 @@ package org.baeldung;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.web.WebAppConfiguration;
import com.baeldung.flips.ApplicationConfig;
@RunWith(SpringRunner.class)
@SpringBootTest(classes = ApplicationConfig.class)
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = ApplicationConfig.class)
@WebAppConfiguration
public class SpringContextIntegrationTest {
@Test

19
spring-boot-autoconfiguration/src/test/java/com/baeldung/SpringContextLiveTest.java Normal file
View File

@ -0,0 +1,19 @@
package com.baeldung;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.web.WebAppConfiguration;
import com.baeldung.autoconfiguration.MySQLAutoconfiguration;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = MySQLAutoconfiguration.class)
@WebAppConfiguration
public class SpringContextLiveTest {
@Test
public void whenSpringContextIsBootstrapped_thenNoExceptions() {
}
}

2
spring-boot-libraries/src/main/java/com/baeldung/scheduling/shedlock/TaskScheduler.java
View File

@ -7,7 +7,7 @@ import org.springframework.stereotype.Component;
@Component
class TaskScheduler {
@Scheduled(cron = "*/15 * * * * *")
@Scheduled(cron = "*/15 * * * *")
@SchedulerLock(name = "TaskScheduler_scheduledTask", lockAtLeastForString = "PT5M", lockAtMostForString = "PT14M")
public void scheduledTask() {
System.out.println("Running ShedLock task");

10
spring-boot-mvc/pom.xml
View File

@ -72,6 +72,16 @@
<version>${spring.fox.version}</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
</dependencies>
<build>

13
spring-boot-mvc/src/main/java/com/baeldung/accessparamsjs/App.java Normal file
View File

@ -0,0 +1,13 @@
package com.baeldung.accessparamsjs;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class App {
public static void main(String[] args) {
SpringApplication.run(App.class, args);
}
}

32
spring-boot-mvc/src/main/java/com/baeldung/accessparamsjs/Controller.java Normal file
View File

@ -0,0 +1,32 @@
package com.baeldung.accessparamsjs;
import java.util.Map;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.servlet.ModelAndView;
/**
* Sample rest controller for the tutorial article
* "Access Spring MVC Model object in JavaScript".
*
* @author Andrew Shcherbakov
*
*/
@RestController
public class Controller {
/**
* Define two model objects (one integer and one string) and pass them to the view.
*
* @param model
* @return
*/
@RequestMapping("/index")
public ModelAndView index(Map<String, Object> model) {
model.put("number", 1234);
model.put("message", "Hello from Spring MVC");
return new ModelAndView("/index");
}
}

2
spring-boot-mvc/src/main/resources/application.properties
View File

@ -1 +1,3 @@
spring.main.allow-bean-definition-overriding=true
spring.mvc.view.prefix=/WEB-INF/jsp/
spring.mvc.view.suffix=.jsp

27
spring-boot-mvc/src/main/webapp/WEB-INF/jsp/index.jsp Normal file
View File

@ -0,0 +1,27 @@
<!DOCTYPE html>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<html lang="en">
<head>
<title>Access Spring MVC params</title>
<script src="/js/jquery.js"></script>
<script src="/js/script-async.js"></script>
<script src="/js/script-async-jquery.js"></script>
<script>
var number = <c:out value="${number}"></c:out>;
var message = "<c:out value="${message}"></c:out>";
</script>
</head>
<body>
<h2>Data from the external JS file (due to loading order)</h2>
<div id="number-ext"></div>
<div id="message-ext"></div>
<h2>Asynchronous loading from external JS file (plain JS)</h2>
<div id="number-async"></div>
<div id="message-async"></div>
<h2>Asynchronous loading from external JS file (jQuery)</h2>
<div id="number-async-jquery"></div>
<div id="message-async-jquery"></div>
</body>
<script src="/js/script.js"></script>
</html>

2
spring-boot-mvc/src/main/webapp/js/jquery.js vendored Normal file
View File

File diff suppressed because one or more lines are too long

6
spring-boot-mvc/src/main/webapp/js/script-async-jquery.js Normal file
View File

@ -0,0 +1,6 @@
$(function() {
var node1 = document.createTextNode("message = " + message);
var node2 = document.createTextNode("number = " + number);
document.getElementById('message-async-jquery').append(node1);
document.getElementById('number-async-jquery').append(node2);
});

6
spring-boot-mvc/src/main/webapp/js/script-async.js Normal file
View File

@ -0,0 +1,6 @@
window.onload = function() {
var node1 = document.createTextNode("message = " + message);
var node2 = document.createTextNode("number = " + number);
document.getElementById('message-async').append(node1);
document.getElementById('number-async').append(node2);
};

4
spring-boot-mvc/src/main/webapp/js/script.js Normal file
View File

@ -0,0 +1,4 @@
var node1 = document.createTextNode("message = " + message);
var node2 = document.createTextNode("number = " + number);
document.getElementById('message-ext').append(node1);
document.getElementById('number-ext').append(node2);

28
spring-boot-mvc/src/test/java/com/baeldung/accessparamsjs/ControllerUnitTest.java Normal file
View File

@ -0,0 +1,28 @@
package com.baeldung.accessparamsjs;
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 ControllerUnitTest {
@Autowired
private MockMvc mvc;
@Test
public void whenRequestIndex_thenStatusOk() throws Exception {
mvc.perform(MockMvcRequestBuilders.get("/index")
.accept(MediaType.APPLICATION_JSON))
.andExpect(status().isOk());
}
}

1
spring-boot-rest/README.md
View File

@ -3,3 +3,4 @@ Module for the articles that are part of the Spring REST E-book:
1. [Bootstrap a Web Application with Spring 5](https://www.baeldung.com/bootstraping-a-web-application-with-spring-and-java-based-configuration)
2. [Error Handling for REST with Spring](http://www.baeldung.com/exception-handling-for-rest-with-spring)
3. [REST Pagination in Spring](http://www.baeldung.com/rest-api-pagination-in-spring)
4. [Build a REST API with Spring and Java Config](http://www.baeldung.com/building-a-restful-web-service-with-spring-and-java-based-configuration)

2
spring-boot-rest/pom.xml
View File

@ -51,7 +51,6 @@
<dependency>
<groupId>net.sourceforge.htmlunit</groupId>
<artifactId>htmlunit</artifactId>
<version>${htmlunit.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
@ -67,7 +66,6 @@
<properties>
<start-class>com.baeldung.SpringBootRestApplication</start-class>
<htmlunit.version>2.32</htmlunit.version>
<guava.version>27.0.1-jre</guava.version>
</properties>
</project>

13
spring-boot-rest/src/main/java/com/baeldung/persistence/IOperations.java
View File

@ -1,16 +1,29 @@
package com.baeldung.persistence;
import java.io.Serializable;
import java.util.List;
import org.springframework.data.domain.Page;
public interface IOperations<T extends Serializable> {
// read - one
T findOne(final long id);
// read - all
List<T> findAll();
Page<T> findPaginated(int page, int size);
// write
T create(final T entity);
T update(final T entity);
void delete(final T entity);
void deleteById(final long entityId);
}

32
spring-boot-rest/src/main/java/com/baeldung/persistence/service/common/AbstractService.java
View File

@ -1,6 +1,7 @@
package com.baeldung.persistence.service.common;
import java.io.Serializable;
import java.util.List;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
@ -8,12 +9,28 @@ import org.springframework.data.repository.PagingAndSortingRepository;
import org.springframework.transaction.annotation.Transactional;
import com.baeldung.persistence.IOperations;
import com.google.common.collect.Lists;
@Transactional
public abstract class AbstractService<T extends Serializable> implements IOperations<T> {
// read - one
@Override
@Transactional(readOnly = true)
public T findOne(final long id) {
return getDao().findById(id)
.get();
}
// read - all
@Override
@Transactional(readOnly = true)
public List<T> findAll() {
return Lists.newArrayList(getDao().findAll());
}
@Override
public Page<T> findPaginated(final int page, final int size) {
return getDao().findAll(PageRequest.of(page, size));
@ -26,6 +43,21 @@ public abstract class AbstractService<T extends Serializable> implements IOperat
return getDao().save(entity);
}
@Override
public T update(final T entity) {
return getDao().save(entity);
}
@Override
public void delete(final T entity) {
getDao().delete(entity);
}
@Override
public void deleteById(final long entityId) {
getDao().deleteById(entityId);
}
protected abstract PagingAndSortingRepository<T, Long> getDao();
}

11
spring-boot-rest/src/main/java/com/baeldung/persistence/service/impl/FooService.java
View File

@ -1,5 +1,7 @@
package com.baeldung.persistence.service.impl;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
@ -11,6 +13,7 @@ import com.baeldung.persistence.dao.IFooDao;
import com.baeldung.persistence.model.Foo;
import com.baeldung.persistence.service.IFooService;
import com.baeldung.persistence.service.common.AbstractService;
import com.google.common.collect.Lists;
@Service
@Transactional
@ -37,4 +40,12 @@ public class FooService extends AbstractService<Foo> implements IFooService {
return dao.findAll(pageable);
}
// overridden to be secured
@Override
@Transactional(readOnly = true)
public List<Foo> findAll() {
return Lists.newArrayList(getDao().findAll());
}
}

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