org.omnifaces.persistence.service

Interface BaseEntityService.QueryBuilder<E>

Type Parameters:

E - The generic base entity type.

Enclosing class:

BaseEntityService<I extends Comparable<I> & Serializable,E extends BaseEntity<I>>

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
protected static interface BaseEntityService.QueryBuilder<E>

Functional interface to fine-grain a JPA criteria query for any of BaseEntityService.getPage(Page, boolean) methods.

You do not need this interface directly. Just supply a lambda. Below is an usage example:

 @Stateless
 public class YourEntityService extends BaseEntityService<YourEntity> {

     public void getPageOfFooType(Page page, boolean count) {
         return getPage(page, count, (criteriaBuilder, query, root) -> {
             query.where(criteriaBuilder.equals(root.get("type"), Type.FOO));
         });
     }

     public void getPageWithLazyChildren(Page page, boolean count) {
         return getPage(page, count, (criteriaBuilder, query, root) -> {
             root.fetch("lazyChildren");
         });
     }

 }
 

Method Summary

Modifier and Type	Method and Description
void	build(javax.persistence.criteria.CriteriaBuilder criteriaBuilder, javax.persistence.criteria.AbstractQuery<E> query, javax.persistence.criteria.Root<E> root)

Method Detail

build

void build(javax.persistence.criteria.CriteriaBuilder criteriaBuilder,
           javax.persistence.criteria.AbstractQuery<E> query,
           javax.persistence.criteria.Root<E> root)