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kldavis4/JacksonDeserializationTest2.java

Created January 24, 2013 22:26
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Test case to demonstrate issue with @JsonIdentityInfo and polymorphic classes
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JacksonDeserializationTest2.java
import com.fasterxml.jackson.annotation.JsonIdentityInfo;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import com.fasterxml.jackson.annotation.ObjectIdGenerators;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.util.ArrayList;
import java.util.List;
public class JacksonDeserializationTest2 {
@org.junit.Test
public void test() throws Exception {
List<Bar> bars = new ArrayList<Bar>();
Bar bar1 = new Bar();
Foo p1 = new Foo();
p1.setObject(bar1);
bar1.setFoo(p1);
bars.add(bar1);
RootEntity rootEntity = new RootEntity();
rootEntity.setBars(bars);
ObjectMapper mapper = new ObjectMapper();
RootEntity deserialized = mapper.readValue(mapper.writeValueAsString(rootEntity),RootEntity.class);
}
@JsonTypeInfo(use=JsonTypeInfo.Id.CLASS, include=JsonTypeInfo.As.PROPERTY, property="@class")
public static class BaseEntity {
}
@JsonIdentityInfo(generator=ObjectIdGenerators.IntSequenceGenerator.class, property="@id")
public static class RootEntity extends BaseEntity
{
private List<Bar> bars;
public List<Bar> getBars() {
return bars;
}
public void setBars(List<Bar> bars) {
this.bars = bars;
}
}
public static class Foo extends BaseEntity {
private BaseEntity object;
public BaseEntity getObject() {
return object;
}
public void setObject(BaseEntity object) {
this.object = object;
}
}
@JsonIdentityInfo(generator=ObjectIdGenerators.IntSequenceGenerator.class, property="@id")
public static class Bar extends BaseEntity
{
private Foo foo;
public Foo getFoo() {
return foo;
}
public void setFoo(Foo foo) {
this.foo = foo;
}
}
}
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