JPA Criteria API with multiple parameters

Question

I need to make a search method that uses the JPA Criteria API with multiple parameters. Now the problem is that not every parameter is required. So some could be null, and t

Answer 1

Mikko's answer worked beautifully. Only change I needed to do, was to replace:

cq.select(customer).where(predicates.toArray(new Predicate[]{}));

with:

Predicate [] predicatesarr = predicates.toArray(new Predicate[predicates.size()]); 
cq.select(customer).where(predicatesarr);

Somewhere the conversion from list to array in the original did not work.