[FIXED] JsonIgnore property if called from entity relation

Issue

I'm trying to conditionally @JsonIgnore some fields from an entity if they're serialized from an other entity's collection (many to one).

I've tried to add @JsonIgnoreProperties to the collection but as I understand that annotation is not for this purpose.

class A {
    //some fields

    @ManyToOne private B b; //if only A is requested, this should NOT be ignored    
}

class B {
    //some fields

    @OneToMany
    @IgnorePrivateBInAToAvoidStackOverflow
    private Set<A> collectionOfAs;
}

Is there any way to achieve this behavior?

Solution

To avoid circular reference Infinite recursion ( stackoverflow error ) you have to annotate calss with @JsonIdentityInfo

So you class looks like :

@JsonIdentityInfo(
       generator = ObjectIdGenerators.PropertyGenerator.class, 
       property = "id")
class A {
    //some fields
    //Integer id;


    @OneToMany private B b; //if only A is requested, this should NOT be ignored    
}

Same thing for class B to bidirectional use :

@JsonIdentityInfo(
       generator = ObjectIdGenerators.PropertyGenerator.class, 
       property = "id")
class B {
    //some fields

    @ManyToOne
    @IgnorePrivateBInAToAvoidStackOverflow
    private Set<A> collectionOfAs;
} 

be aware that the property refers to your unique field name ( set to id in this example )

for more reading see this article

Answered By - Spring
Answer Checked By - Gilberto Lyons (JavaFixing Admin)