I was trying to turn all my DB into Lazy loading, because it got too big (Like millions),
in order to not load everything i applied a lazy, and started doing Spring Projections,
then, in the projection, when i add one Entity, it shows the Entity correctly in postman,
but when another entity is added, both are the same, but one has some other eager loadings,
the one with the eagers throws an error and the other doesn’t.

I think is because the other eager tables

@JsonIgnoreProperties("decoratedClass")
public interface UbicacionesLugaresProjection {
    Integer getId();

    int getTipolugar();

    Lugar getiDlugar();

    boolean getPordefecto();

    ArticulosV3 getArticuloOneway();
}

So, I was asking, is there anything i can do, to in the projection, load another projection of the other column? without the eager columns? Like, doing a projection in the projection would solve it?

Or is there anything i can do?

The one that loads:

    @JoinColumn(name = "ID_lugar", referencedColumnName = "ID")
    @ManyToOne(optional = false)
    @JsonView(JsonViews.Summary.class)
    private Lugar iDlugar;

(No eager tables in Lugar)

The one that doesn’t:

    @JoinColumn(name = "articulo_oneway", referencedColumnName = "ID")
    @NotFound(action = NotFoundAction.IGNORE)
    @ManyToOne(optional = true)
    @JsonView(JsonViews.Summary.class)
    private ArticulosV3 articuloOneway;

(Many eagers in this one)

Removing the eagers in ArtivulosV3 would not be an options

The error if needed

2024-04-25 17:09:19 [http-nio-8080-exec-2] WARN  o.s.w.s.m.s.DefaultHandlerExceptionResolver - Failed to write HTTP message: org.springframework.http.converter.HttpMessageNotWritableException: Could not write content: No serializer found for class org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) ) (through reference chain: java.util.ArrayList[0]->$Proxy349["articuloOneway"]->com.clickrent.backoffice.ws.entities.ArticulosV3["articulosUbicacion"]->org.hibernate.collection.internal.PersistentBag[0]->com.clickrent.backoffice.ws.entities.ArticulosUbicacion["idUbicaciones"]->com.clickrent.backoffice.ws.entities.Ubicaciones_$$_jvst1a7_9e["handler"]); nested exception is com.fasterxml.jackson.databind.JsonMappingException: No serializer found for class org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) ) (through reference chain: java.util.ArrayList[0]->$Proxy349["articuloOneway"]->com.clickrent.backoffice.ws.entities.ArticulosV3["articulosUbicacion"]->org.hibernate.collection.internal.PersistentBag[0]->com.clickrent.backoffice.ws.entities.ArticulosUbicacion["idUbicaciones"]->com.clickrent.backoffice.ws.entities.Ubicaciones_$$_jvst1a7_9e["handler"])

Thanks!