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jsonpath with new use cases

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Thai Nguyen 2016-03-04 10:32:39 +07:00
parent 7011fa40fe
commit 516729bf57
5 changed files with 331 additions and 0 deletions
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51
json-path/pom.xml Normal file
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<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>org.baeldung</groupId>
<artifactId>json-path</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>json-path</name>
<dependencies>
<!-- json-path -->
<dependency>
<groupId>com.jayway.jsonpath</groupId>
<artifactId>json-path</artifactId>
<version>${json-path.version}</version>
</dependency>
<!-- Testing -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<!-- Logging -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>${logback.version}</version>
<scope>runtime</scope>
</dependency>
</dependencies>
<properties>
<!-- json-path -->
<json-path.version>2.1.0</json-path.version>
<!-- Testing -->
<junit.version>4.12</junit.version>
<!-- Logging -->
<slf4j.version>1.7.14</slf4j.version>
<logback.version>1.1.3</logback.version>
</properties>
</project>

57
json-path/src/main/resources/intro_api.json Normal file
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{
"tool":
{
"jsonpath":
{
"creator":
{
"name": "Jayway Inc.",
"location":
[
"Malmo",
"Stockholm",
"Copenhagen",
"San Francisco",
"Karlskrona",
"Halmstad",
"Helsingborg"
]
},
"current release": "2.1"
}
},
"book":
[
{
"title": "Beginning JSON",
"author": "Ben Smith",
"price": 49.99
},
{
"title": "JSON at Work",
"author": "Tom Marrs",
"price": 29.99
},
{
"title": "Learn JSON in a DAY",
"author": "Acodemy",
"price": 8.99
},
{
"title": "JSON: Questions and Answers",
"author": "George Duckett",
"price": 6.00
}
],
"price range":
{
"cheap": 10.00,
"medium": 20.00
}
}

61
json-path/src/main/resources/intro_service.json Normal file
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[
{
"id": 1,
"title": "Casino Royale",
"director": "Martin Campbell",
"starring":
[
"Daniel Craig",
"Eva Green"
],
"desc": "Twenty-first James Bond movie",
"release date": 1163466000000,
"box office": 594275385
},
{
"id": 2,
"title": "Quantum of Solace",
"director": "Marc Forster",
"starring":
[
"Daniel Craig",
"Olga Kurylenko"
],
"desc": "Twenty-second James Bond movie",
"release date": 1225242000000,
"box office": 591692078
},
{
"id": 3,
"title": "Skyfall",
"director": "Sam Mendes",
"starring":
[
"Daniel Craig",
"Naomie Harris"
],
"desc": "Twenty-third James Bond movie",
"release date": 1350954000000,
"box office": 1110526981
},
{
"id": 4,
"title": "Spectre",
"director": "Sam Mendes",
"starring":
[
"Daniel Craig",
"Lea Seydoux"
],
"desc": "Twenty-fourth James Bond movie",
"release date": 1445821200000,
"box office": 879376275
}
]

71
json-path/src/test/java/org/baeldung/jsonpath/introduction/OperationTest.java Normal file
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package org.baeldung.jsonpath.introduction;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThat;
import static org.hamcrest.CoreMatchers.containsString;
import static org.hamcrest.CoreMatchers.not;
import org.junit.Test;
import java.io.InputStream;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
import com.jayway.jsonpath.Criteria;
import com.jayway.jsonpath.DocumentContext;
import com.jayway.jsonpath.Filter;
import com.jayway.jsonpath.JsonPath;
import com.jayway.jsonpath.Predicate;
public class OperationTest {
InputStream jsonInputStream = this.getClass().getClassLoader().getResourceAsStream("intro_api.json");
String jsonDataSourceString = new Scanner(jsonInputStream, "UTF-8").useDelimiter("\\Z").next();
@Test
public void givenJsonPathWithoutPredicates_whenReading_thenCorrect() {
String jsonpathCreatorNamePath = "$['tool']['jsonpath']['creator']['name']";
String jsonpathCreatorLocationPath = "$['tool']['jsonpath']['creator']['location'][*]";
DocumentContext jsonContext = JsonPath.parse(jsonDataSourceString);
String jsonpathCreatorName = jsonContext.read(jsonpathCreatorNamePath);
List<String> jsonpathCreatorLocation = jsonContext.read(jsonpathCreatorLocationPath);
assertEquals("Jayway Inc.", jsonpathCreatorName);
assertThat(jsonpathCreatorLocation.toString(), containsString("Malmo"));
assertThat(jsonpathCreatorLocation.toString(), containsString("San Francisco"));
assertThat(jsonpathCreatorLocation.toString(), containsString("Helsingborg"));
}
@Test
public void givenJsonPathWithFilterPredicate_whenReading_thenCorrect() {
Filter expensiveFilter = Filter.filter(Criteria.where("price").gt(20.00));
List<Map<String, Object>> expensive = JsonPath.parse(jsonDataSourceString).read("$['book'][?]", expensiveFilter);
predicateUsageAssertionHelper(expensive);
}
@Test
public void givenJsonPathWithCustomizedPredicate_whenReading_thenCorrect() {
Predicate expensivePredicate = new Predicate() {
public boolean apply(PredicateContext context) {
String value = context.item(Map.class).get("price").toString();
return Float.valueOf(value) > 20.00;
}
};
List<Map<String, Object>> expensive = JsonPath.parse(jsonDataSourceString).read("$['book'][?]", expensivePredicate);
predicateUsageAssertionHelper(expensive);
}
@Test
public void givenJsonPathWithInlinePredicate_whenReading_thenCorrect() {
List<Map<String, Object>> expensive = JsonPath.parse(jsonDataSourceString).read("$['book'][?(@['price'] > $['price range']['medium'])]");
predicateUsageAssertionHelper(expensive);
}
private void predicateUsageAssertionHelper(List<?> predicate) {
assertThat(predicate.toString(), containsString("Beginning JSON"));
assertThat(predicate.toString(), containsString("JSON at Work"));
assertThat(predicate.toString(), not(containsString("Learn JSON in a DAY")));
assertThat(predicate.toString(), not(containsString("JSON: Questions and Answers")));
}
}

91
json-path/src/test/java/org/baeldung/jsonpath/introduction/ServiceTest.java Normal file
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package org.baeldung.jsonpath.introduction;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertEquals;
import static org.hamcrest.CoreMatchers.containsString;
import org.junit.Test;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
import com.jayway.jsonpath.Configuration;
import com.jayway.jsonpath.DocumentContext;
import com.jayway.jsonpath.JsonPath;
import com.jayway.jsonpath.Option;
public class ServiceTest {
InputStream jsonInputStream = this.getClass().getClassLoader().getResourceAsStream("intro_service.json");
String jsonString = new Scanner(jsonInputStream, "UTF-8").useDelimiter("\\Z").next();
@Test
public void givenId_whenRequestingRecordData_thenSucceed() {
Object dataObject = JsonPath.parse(jsonString).read("$[?(@.id == 2)]");
String dataString = dataObject.toString();
assertThat(dataString, containsString("2"));
assertThat(dataString, containsString("Quantum of Solace"));
assertThat(dataString, containsString("Twenty-second James Bond movie"));
}
@Test
public void givenStarring_whenRequestingMovieTitle_thenSucceed() {
List<Map<String, Object>> dataList = JsonPath.parse(jsonString).read("$[?('Eva Green' in @['starring'])]");
String title = (String) dataList.get(0).get("title");
assertEquals("Casino Royale", title);
}
@Test
public void givenCompleteStructure_whenCalculatingTotalRevenue_thenSucceed() {
DocumentContext context = JsonPath.parse(jsonString);
int length = context.read("$.length()");
long revenue = 0;
for (int i = 0; i < length; i++) {
revenue += context.read("$[" + i + "]['box office']", Long.class);
}
assertEquals(594275385L + 591692078L + 1110526981L + 879376275L, revenue);
}
@Test
public void givenStructure_whenRequestingHighestRevenueMovieTitle_thenSucceed() {
DocumentContext context = JsonPath.parse(jsonString);
List<Object> revenueList = context.read("$[*]['box office']");
Integer[] revenueArray = revenueList.toArray(new Integer[0]);
Arrays.sort(revenueArray);
int highestRevenue = revenueArray[revenueArray.length - 1];
Configuration pathConfiguration = Configuration.builder().options(Option.AS_PATH_LIST).build();
List<String> pathList = JsonPath.using(pathConfiguration).parse(jsonString).read("$[?(@['box office'] == " + highestRevenue + ")]");
Map<String, String> dataRecord = context.read(pathList.get(0));
String title = dataRecord.get("title");
assertEquals("Skyfall", title);
}
@Test
public void givenDirector_whenRequestingLatestMovieTitle_thenSucceed() {
DocumentContext context = JsonPath.parse(jsonString);
List<Map<String, Object>> dataList = context.read("$[?(@.director == 'Sam Mendes')]");
List<Object> dateList = new ArrayList<>();
for (Map<String, Object> item : dataList) {
Object date = item.get("release date");
dateList.add(date);
}
Long[] dateArray = dateList.toArray(new Long[0]);
Arrays.sort(dateArray);
long latestTime = dateArray[dateArray.length - 1];
List<Map<String, Object>> finalDataList = context.read("$[?(@['director'] == 'Sam Mendes' && @['release date'] == " + latestTime + ")]");
String title = (String) finalDataList.get(0).get("title");
assertEquals("Spectre", title);
}
}