Injection when there is cyclic references fails #538
Description
When trying to debug problem in my project I was able reduce the problem to this simple case...
It seems that Jackson cannot handle injecting values via constructor when there is cyclic references.
The error disappears when I remove the cyclic reference or inject from either constructor.
com.fasterxml.jackson.databind.deser.UnresolvedForwardReference: Could not resolve Object Id [1] (for [simple type, class test.Test$A]).
at [Source: {"@id":1,"b":{"@id":2,"a":1}}; line: 1, column: 28]
at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromObjectId(BeanDeserializerBase.java:1042)
at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromNumber(BeanDeserializerBase.java:1076)
at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeOther(BeanDeserializer.java:137)
at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:126)
at com.fasterxml.jackson.databind.deser.SettableBeanProperty.deserialize(SettableBeanProperty.java:538)
at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeUsingPropertyBased(BeanDeserializer.java:373)
at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromObjectUsingNonDefault(BeanDeserializerBase.java:1056)
at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:264)
at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeWithObjectId(BeanDeserializerBase.java:1028)
at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:122)
at com.fasterxml.jackson.databind.deser.SettableBeanProperty.deserialize(SettableBeanProperty.java:538)
at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeUsingPropertyBased(BeanDeserializer.java:373)
at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromObjectUsingNonDefault(BeanDeserializerBase.java:1056)
at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:264)
at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeWithObjectId(BeanDeserializerBase.java:1028)
at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:122)
at com.fasterxml.jackson.databind.ObjectReader._bindAndClose(ObjectReader.java:1269)
at com.fasterxml.jackson.databind.ObjectReader.readValue(ObjectReader.java:896)
at test.Test.main(Test.java:23)package test;
import java.io.IOException;
import com.fasterxml.jackson.annotation.JacksonInject;
import com.fasterxml.jackson.annotation.JsonIdentityInfo;
import com.fasterxml.jackson.annotation.ObjectIdGenerators;
import com.fasterxml.jackson.databind.InjectableValues;
import com.fasterxml.jackson.databind.ObjectMapper;
public class Test {
public static void main(String[] args) {
A a = new A(null);
B b = new B(null);
a.b = b;
b.a = a;
try {
ObjectMapper mapper = new ObjectMapper();
String json = mapper.writeValueAsString(a);
InjectableValues.Std inject = new InjectableValues.Std();
inject.addValue("i1", "e1");
inject.addValue("i2", "e2");
mapper.reader(inject).withType(A.class).readValue(json);
System.out.println(json);
} catch (IOException expection) {
expection.printStackTrace();
}
}
@JsonIdentityInfo(generator = ObjectIdGenerators.IntSequenceGenerator.class)
public static class A {
public B b;
public A(@JacksonInject("i1") String injected) {}
}
@JsonIdentityInfo(generator = ObjectIdGenerators.IntSequenceGenerator.class)
public static class B {
public A a;
public B(@JacksonInject("i2") String injected) {}
}
}