when to use ListPath (querydsl)?

Question

I have a current code that use listPath, but I encounter problems to understand it in order to add changes.

I didn't find useful informations when searching in google.

Any explanation when and how to use it ?

Answer 1

You can for example join a ListPath

Given the entity metamodel:

@Generated("com.querydsl.codegen.EntitySerializer")
public class QCat extends EntityPathBase<Cat> {
    // Other fields omitted for brevity

    public final ListPath<Cat, QCat> kittens = this.<Cat, QCat>createList("kittens", Cat.class, QCat.class, PathInits.DIRECT2);

You could for example do:

query().from(cat, cats)
           .innerJoin(cat.kittens, kitten).where(kitten.name.eq("Kitty"))
           .select(cat).fetch();