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BAEL-1778 (#4351)

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* Also needed

* BAEL-1698

* BAEL-1698

* BAEL-1778
This commit is contained in:
Andrea Ligios 2018-05-27 22:49:31 +02:00 committed by maibin
parent 89d1127fb2
commit a3563f0ef5
11 changed files with 301 additions and 61 deletions
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9
gson/pom.xml
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@ -1,4 +1,5 @@
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
<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>
@ -15,6 +16,12 @@
<dependencies>
<!-- utils -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.10</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>

11
gson/src/main/java/org/baeldung/gson/serializationwithexclusions/Exclude.java Normal file
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@ -0,0 +1,11 @@
package org.baeldung.gson.serializationwithexclusions;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface Exclude {
}

13
gson/src/main/java/org/baeldung/gson/serializationwithexclusions/MyClass.java Normal file
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@ -0,0 +1,13 @@
package org.baeldung.gson.serializationwithexclusions;
import lombok.AllArgsConstructor;
import lombok.Data;
@Data
@AllArgsConstructor
public class MyClass {
private long id;
private String name;
private String other;
private MySubClass subclass;
}

20
gson/src/main/java/org/baeldung/gson/serializationwithexclusions/MyClassWithAnnotatedFields.java Normal file
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@ -0,0 +1,20 @@
package org.baeldung.gson.serializationwithexclusions;
import com.google.gson.annotations.Expose;
import lombok.AllArgsConstructor;
import lombok.Data;
@Data
@AllArgsConstructor
public class MyClassWithAnnotatedFields {
@Expose
private long id;
@Expose
private String name;
private String other;
@Expose
private MySubClassWithAnnotatedFields subclass;
}

16
gson/src/main/java/org/baeldung/gson/serializationwithexclusions/MyClassWithCustomAnnotatedFields.java Normal file
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@ -0,0 +1,16 @@
package org.baeldung.gson.serializationwithexclusions;
import lombok.AllArgsConstructor;
import lombok.Data;
@Data
@AllArgsConstructor
public class MyClassWithCustomAnnotatedFields {
private long id;
private String name;
@Exclude
private String other;
private MySubClassWithCustomAnnotatedFields subclass;
}

15
gson/src/main/java/org/baeldung/gson/serializationwithexclusions/MyClassWithTransientFields.java Normal file
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@ -0,0 +1,15 @@
package org.baeldung.gson.serializationwithexclusions;
import lombok.AllArgsConstructor;
import lombok.Data;
@Data
@AllArgsConstructor
public class MyClassWithTransientFields {
private long id;
private String name;
private transient String other;
private MySubClassWithTransientFields subclass;
}

12
gson/src/main/java/org/baeldung/gson/serializationwithexclusions/MySubClass.java Normal file
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@ -0,0 +1,12 @@
package org.baeldung.gson.serializationwithexclusions;
import lombok.AllArgsConstructor;
import lombok.Data;
@Data
@AllArgsConstructor
public class MySubClass {
private long id;
private String description;
private String otherVerboseInfo;
}

15
gson/src/main/java/org/baeldung/gson/serializationwithexclusions/MySubClassWithAnnotatedFields.java Normal file
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@ -0,0 +1,15 @@
package org.baeldung.gson.serializationwithexclusions;
import com.google.gson.annotations.Expose;
import lombok.AllArgsConstructor;
import lombok.Data;
@Data
@AllArgsConstructor
public class MySubClassWithAnnotatedFields {
@Expose private long id;
@Expose private String description;
private String otherVerboseInfo;
}

14
gson/src/main/java/org/baeldung/gson/serializationwithexclusions/MySubClassWithCustomAnnotatedFields.java Normal file
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@ -0,0 +1,14 @@
package org.baeldung.gson.serializationwithexclusions;
import lombok.AllArgsConstructor;
import lombok.Data;
@Data
@AllArgsConstructor
public class MySubClassWithCustomAnnotatedFields {
private long id;
private String description;
@Exclude
private String otherVerboseInfo;
}

13
gson/src/main/java/org/baeldung/gson/serializationwithexclusions/MySubClassWithTransientFields.java Normal file
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@ -0,0 +1,13 @@
package org.baeldung.gson.serializationwithexclusions;
import lombok.AllArgsConstructor;
import lombok.Data;
@Data
@AllArgsConstructor
public class MySubClassWithTransientFields {
private long id;
private String description;
private transient String otherVerboseInfo;
}

104
gson/src/test/java/org/baeldung/gson/serializationwithexclusions/SerializationWithExclusionsUnitTest.java Normal file
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@ -0,0 +1,104 @@
package org.baeldung.gson.serializationwithexclusions;
import static org.junit.jupiter.api.Assertions.assertEquals;
import org.junit.jupiter.api.Test;
import com.google.gson.ExclusionStrategy;
import com.google.gson.FieldAttributes;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
class SerializationWithExclusionsUnitTest {
final String expectedResult = "{\"id\":1,\"name\":\"foo\",\"subclass\":{\"id\":42,\"description\":\"the answer\"}}";
@Test
public void givenClassWithTransientFields_whenSerializing_thenCorrectWithoutTransientFields() {
MyClassWithTransientFields source = new MyClassWithTransientFields(1L, "foo", "bar", new MySubClassWithTransientFields(42L, "the answer", "Verbose field which we don't want to be serialized"));
String jsonString = new Gson().toJson(source);
assertEquals(expectedResult, jsonString);
}
@Test
public void givenClassAnnotated_whenSerializing_thenCorrectWithoutNotAnnotatedFields() {
MyClassWithAnnotatedFields source = new MyClassWithAnnotatedFields(1L, "foo", "bar", new MySubClassWithAnnotatedFields(42L, "the answer", "Verbose field which we don't want to be serialized"));
Gson gson = new GsonBuilder().excludeFieldsWithoutExposeAnnotation()
.create();
String jsonString = gson.toJson(source);
assertEquals(expectedResult, jsonString);
}
@Test
public void givenExclusionStrategyByClassesAndFields_whenSerializing_thenFollowStrategy() {
MyClass source = new MyClass(1L, "foo", "bar", new MySubClass(42L, "the answer", "Verbose field which we don't want to be serialized"));
ExclusionStrategy strategy = new ExclusionStrategy() {
@Override
public boolean shouldSkipField(FieldAttributes field) {
if (field.getDeclaringClass() == MyClass.class && field.getName()
.equals("other"))
return true;
if (field.getDeclaringClass() == MySubClass.class && field.getName()
.equals("otherVerboseInfo"))
return true;
return false;
}
@Override
public boolean shouldSkipClass(Class<?> clazz) {
return false;
}
};
Gson gson = new GsonBuilder().addSerializationExclusionStrategy(strategy)
.create();
String jsonString = gson.toJson(source);
assertEquals(expectedResult, jsonString);
}
@Test
public void givenExclusionStrategyByStartsWith_whenSerializing_thenFollowStrategy() {
MyClass source = new MyClass(1L, "foo", "bar", new MySubClass(42L, "the answer", "Verbose field which we don't want to be serialized"));
ExclusionStrategy strategy = new ExclusionStrategy() {
@Override
public boolean shouldSkipClass(Class<?> clazz) {
return false;
}
@Override
public boolean shouldSkipField(FieldAttributes field) {
return field.getName().startsWith("other");
}
};
Gson gson = new GsonBuilder().setExclusionStrategies(strategy)
.create();
String jsonString = gson.toJson(source);
assertEquals(expectedResult, jsonString);
}
@Test
public void givenExclusionStrategyByCustomAnnotation_whenSerializing_thenFollowStrategy() {
MyClassWithCustomAnnotatedFields source = new MyClassWithCustomAnnotatedFields(1L, "foo", "bar", new MySubClassWithCustomAnnotatedFields(42L, "the answer", "Verbose field which we don't want to be serialized"));
ExclusionStrategy strategy = new ExclusionStrategy() {
@Override
public boolean shouldSkipClass(Class<?> clazz) {
return false;
}
@Override
public boolean shouldSkipField(FieldAttributes field) {
return field.getAnnotation(Exclude.class) != null;
}
};
Gson gson = new GsonBuilder().setExclusionStrategies(strategy)
.create();
String jsonString = gson.toJson(source);
assertEquals(expectedResult, jsonString);
}
}