JarCastingspecification-with-projection
Support Projections with JpaSpecificationExecutor.findAll(Specification,Pageable) for Spring Data JPA
version 2.x.x for Spring Data JPA 2.x (Spring Boot 2.x)
version 1.x.x Spring Data JPA 1.x
How to use
- add dependency to pom
<!-- for Spring Data 2.x -->
<dependency>
<groupId>th.co.geniustree.springdata.jpa</groupId>
<artifactId>specification-with-projections</artifactId>
<version>2.0.1</version>
</dependency>
<!-- for Spring Data 1.x -->
<dependency>
<groupId>th.co.geniustree.springdata.jpa</groupId>
<artifactId>specification-with-projections</artifactId>
<version>1.0.6</version>
</dependency>
- add annotation
@EnableJpaRepositories(repositoryBaseClass = JpaSpecificationExecutorWithProjectionImpl.class)on Application class (Spring Boot) - create your repository and extends
JpaSpecificationExecutorWithProjection
public interface DocumentRepository extends JpaRepository<Document,Integer>,JpaSpecificationExecutorWithProjection<Document,Integer> {
/**
* projection interface
**/
public static interface DocumentWithoutParent{
Long getId();
String getDescription();
String getDocumentType();
String getDocumentCategory();
List<DocumentWithoutParent> getChild();
}
}
-
use it
@Test public void specificationWithProjection() { Specifications<Document> where = Specifications.where(DocumentSpecs.idEq(1L)); Page<DocumentRepository.DocumentWithoutParent> all = documentRepository.findAll(where, DocumentRepository.DocumentWithoutParent.class, new PageRequest(0,10)); Assertions.assertThat(all).isNotEmpty(); }
- version 1.0.3 RELEASE add support for @NamedEntityGraph and AD-HOC entity graph (via JpaEntityGraph) http://docs.spring.io/spring-data/jpa/docs/1.10.4.RELEASE/reference/html/#jpa.entity-graph
JpaEntityGraph jpaEntityGraph = new JpaEntityGraph(
"birth.sistRecvTm",
EntityGraph.EntityGraphType.FETCH,
new String[]{"sistRecvTm","birth","transfer","merger"}
);
BirthWithoutChild birth = birthRepository.findAll(createSpecBirth(searchData, type.toUpperCase()), BirthWithoutChild.class,jpaEntityGraph,pageable);