What are some of the real world example where JPA2 Criteria API is more preferable?

Question

I have taken a look at JPA 2.0 Criteria API, but I found it to be too cumbersome unlike Hibernate Criteria. Is there any good reason to use JPA 2.0 Criteria API rather than

Answer 1

JPA 2.0 Criteria API is The Object-based API for building queries. I think it can play a good job when you have a dynamic query which can become more readable as follows

cq.select(...)
  .where(...)
  .orderBy(...)
  .groupBy(...);

But when using static query prefer To use an externalized, maintainable and readable file

    ...
    
       
           
       
    
    
       
           
       
    
    ...

If you have a modularized application use one xml file for each module as follows

br
   com
       ar
           moduleA
               model
                   repository
                       moduleA.xml
           moduleB
               model
                   repository
                       moduleB.xml               
           moduleC
               model
                   repository
                       moduleC.xml

Then you define your mappinf-file element

br/com/ar/moduleA/model/repository/moduleA.xml
br/com/ar/moduleB/model/repository/moduleB.xml
br/com/ar/moduleC/model/repository/moduleC.xml