QueryDsl - subquery in collection expression

Question

I\'m using spring-data-jpa and querydsl (3.2.3)
I have a scenario where I\'m creating set of predicates based on user filer/input. All of these comes to BooleanEx

Answer 1

Try this:

QInvoice invoice = QInvoice.invoice;
QCompany company = QCompany.company;

List<Invoice> list = new HibernateQuery(sessionFactory.getCurrentSession())
      .from(invoice).where(
      new HibernateSubQuery().from(invoice, company).where(
              invoice.supplier.number.eq(company.number).and(
              company.active.eq(true))).exists()).list(invoice);

Answer 2

Here is a variant of jaiwo99's answer in a more JPAesque form

BooleanExpression exp = invoice.supplier.number.in(new JPASubQuery()
    .from(company)
    .where(company.active.isTrue())
    .list(company.nu‌​mber));

Feel free to merge this into the original answer.