how to write Hibernate Criteria to take nested objects by Projection List?

Question

I want to take Nested object values in Hibernate Projection List. I having Pojo \'Charge\' and \'Tariff\' class with OneToMany and ManyToOne relations.

My sample cod

Answer 1

My solution is very basic. It's not as clean as a proper result transformer but it's useful when you just need to do a quick projection for a few properties.

Instead of .add(Projections.property("tariff.amount"),"amount")) type .add(Projections.property("tariff.amount"),"tariffAmount"))

Then, just add a setter on your root object "setTariffAmount".

public void setTariffAmount(String tariffAmount) {
  this.tariff = (this.tariff==null) ? new Tariff() : tariff;
  tariff.setAmount(tariffAmount);
}

The drawback is that it "dirties" your object with extra methods.