Infinite recursion due to @JsonIgnoreProperties not applicable to List valued property

[peruzzo]

I have a stackoverflow problem, but it occurs only depending on the entity that initialize first.

@Entity @Table(name="contrato")
public class Contrato {

    @Id
    private Long id;

    private String numeroContrato;

    @OneToMany(mappedBy="contrato") @JsonIgnoreProperties("contrato")
    private List<Parcela> parcelas;

    @OneToMany(mappedBy="contrato") @JsonIgnoreProperties("contrato")
    private List<Liquidacao> liquidacoes;
}

@Entity @Table(name="contrato_parcela")
public class Parcela {

    @Id
    private Long id;

    private Integer numeroParcela;  

    @ManyToOne(fetch=FetchType.LAZY) @JoinColumn(name="contrato_id")
    private Contrato contrato;
}

@Entity @Table(name="contrato_liquidacao")
public class Liquidacao {

    @Id
    private Long id;

    private BigDecimal valorTotal;

    @ManyToOne(fetch=FetchType.LAZY) @JoinColumn(name="contrato_id")
    private Contrato contrato;

    @ManyToOne(fetch=FetchType.LAZY) @JoinColumn(name="contrato_parcela_id") @JsonIgnoreProperties("contrato")
    private Parcela parcela;
}

This block below works perfectly with the expected return: {"numeroContrato":"101-6861944","parcelas":[{"numeroParcela":3}],"liquidacoes":[{"valorTotal":91548.00,"parcela":{"numeroParcela":3}}]}

final Contrato contrato = em.find(Contrato.class, 1L);
Hibernate.initialize(contrato.getParcelas());
Hibernate.initialize(contrato.getLiquidacoes());
mapper.writer().writeValueAsString(contrato);

But that other code block, where I changed the boot order of the relationship I have a stackoverflow.

Contrato contrato = em.find(Contrato.class, 1L);
Hibernate.initialize(contrato.getLiquidacoes());
Hibernate.initialize(contrato.getParcelas());
mapper.writer().writeValueAsString(contrato); 

Exception in thread "main" com.fasterxml.jackson.databind.JsonMappingException: Infinite recursion (StackOverflowError) (through reference chain: teste.jackson.Contrato["parcelas"]->org.hibernate.collection.internal.PersistentBag[0]->teste.jackson.Parcela["contrato"]->teste.jackson.Contrato["parcelas"]->org.hibernate.collection.internal.PersistentBag[0]->teste.jackson.Parcela["contrato"]->teste.jackson.Contrato["parcelas"]->org.hibernate.collection.internal.PersistentBag[0]->teste.jackson.Parcela["contrato"]->teste.jackson.Contrato["parcelas"]->org.hibernate.collection.internal.PersistentBag[0] ...

[peruzzo]

I believe that solving the problem is to make the class HibernateProxySerializer implement the ContextualSerializer interface. This way you can have accesso to BeanProperty in serialize method.

[mperuzzo]

+1

[cowtowncoder]

What would be useful here is a self-contained unit test.

[peruzzo]

@cowtowncoder He came to look at my suggestion to fix this issue #82 ? I try to see the other way if you do not find a valid solution.

[cowtowncoder]

@peruzzo Thanks -- I'll have a look at this now.

[peruzzo]

@cowtowncoder Thanks! 😃