Examples with EntityGraph javax.persistence.EntityGraph used on opensource projects

Example 6 with EntityGraph

use of javax.persistence.EntityGraph in project hibernate-orm by hibernate.

the class EntityGraphLoadPlanBuilderTest method testEmbeddedCollection.

@Test
public void testEmbeddedCollection() {
    EntityManager em = getOrCreateEntityManager();
    EntityGraph eg = em.createEntityGraph(ExpressCompany.class);
    eg.addAttributeNodes("shipAddresses");
    //WTF name!!!
    LoadPlan loadLoadPlan = buildLoadPlan(eg, Mode.LOAD, ExpressCompany.class);
    LoadPlanTreePrinter.INSTANCE.logTree(loadLoadPlan, new AliasResolutionContextImpl(sfi()));
    QuerySpace querySpace = loadLoadPlan.getQuerySpaces().getRootQuerySpaces().iterator().next();
    Iterator<Join> iterator = querySpace.getJoins().iterator();
    assertTrue(iterator.hasNext());
    Join collectionJoin = iterator.next();
    assertEquals(QuerySpace.Disposition.COLLECTION, collectionJoin.getRightHandSide().getDisposition());
    assertFalse(iterator.hasNext());
    iterator = collectionJoin.getRightHandSide().getJoins().iterator();
    assertTrue(iterator.hasNext());
    Join collectionElementJoin = iterator.next();
    assertFalse(iterator.hasNext());
    assertEquals(QuerySpace.Disposition.COMPOSITE, collectionElementJoin.getRightHandSide().getDisposition());
    iterator = collectionElementJoin.getRightHandSide().getJoins().iterator();
    assertTrue(iterator.hasNext());
    Join countryJoin = iterator.next();
    assertFalse(iterator.hasNext());
    assertEquals(QuerySpace.Disposition.ENTITY, countryJoin.getRightHandSide().getDisposition());
    //----------------------------------------------------------------
    LoadPlan fetchLoadPlan = buildLoadPlan(eg, Mode.FETCH, ExpressCompany.class);
    LoadPlanTreePrinter.INSTANCE.logTree(fetchLoadPlan, new AliasResolutionContextImpl(sfi()));
    querySpace = fetchLoadPlan.getQuerySpaces().getRootQuerySpaces().iterator().next();
    iterator = querySpace.getJoins().iterator();
    assertTrue(iterator.hasNext());
    collectionJoin = iterator.next();
    assertEquals(QuerySpace.Disposition.COLLECTION, collectionJoin.getRightHandSide().getDisposition());
    assertFalse(iterator.hasNext());
    iterator = collectionJoin.getRightHandSide().getJoins().iterator();
    assertTrue(iterator.hasNext());
    collectionElementJoin = iterator.next();
    assertFalse(iterator.hasNext());
    assertEquals(QuerySpace.Disposition.COMPOSITE, collectionElementJoin.getRightHandSide().getDisposition());
    iterator = collectionElementJoin.getRightHandSide().getJoins().iterator();
    assertFalse(iterator.hasNext());
    //----------------------------------------------------------------
    em.close();
}

Example 7 with EntityGraph

use of javax.persistence.EntityGraph in project hibernate-orm by hibernate.

the class EntityGraphLoadPlanBuilderTest method testBasicFetchLoadPlanBuilding.

/**
	 * EntityGraph(1):
	 *
	 * Cat
	 *
	 * LoadPlan:
	 *
	 * Cat
	 *
	 * ---------------------
	 *
	 * EntityGraph(2):
	 *
	 * Cat
	 * owner -- Person
	 *
	 * LoadPlan:
	 *
	 * Cat
	 * owner -- Person
	 * address --- Address
	 */
@Test
public void testBasicFetchLoadPlanBuilding() {
    EntityManager em = getOrCreateEntityManager();
    EntityGraph eg = em.createEntityGraph(Cat.class);
    LoadPlan plan = buildLoadPlan(eg, Mode.FETCH, Cat.class);
    LoadPlanTreePrinter.INSTANCE.logTree(plan, new AliasResolutionContextImpl(sfi()));
    QuerySpace rootQuerySpace = plan.getQuerySpaces().getRootQuerySpaces().get(0);
    assertFalse("With fetchgraph property and an empty EntityGraph, there should be no join at all", rootQuerySpace.getJoins().iterator().hasNext());
    // -------------------------------------------------- another a little more complicated case
    eg = em.createEntityGraph(Cat.class);
    eg.addSubgraph("owner", Person.class);
    plan = buildLoadPlan(eg, Mode.FETCH, Cat.class);
    LoadPlanTreePrinter.INSTANCE.logTree(plan, new AliasResolutionContextImpl(sfi()));
    rootQuerySpace = plan.getQuerySpaces().getRootQuerySpaces().get(0);
    Iterator<Join> iterator = rootQuerySpace.getJoins().iterator();
    assertTrue("With fetchgraph property and an empty EntityGraph, there should be no join at all", iterator.hasNext());
    Join personJoin = iterator.next();
    assertNotNull(personJoin);
    QuerySpace.Disposition disposition = personJoin.getRightHandSide().getDisposition();
    assertEquals("This should be an entity join which fetches Person", QuerySpace.Disposition.ENTITY, disposition);
    iterator = personJoin.getRightHandSide().getJoins().iterator();
    assertTrue("The composite address should be fetched", iterator.hasNext());
    Join addressJoin = iterator.next();
    assertNotNull(addressJoin);
    disposition = addressJoin.getRightHandSide().getDisposition();
    assertEquals(QuerySpace.Disposition.COMPOSITE, disposition);
    assertFalse(iterator.hasNext());
    assertFalse("The ManyToOne attribute in composite should not be fetched", addressJoin.getRightHandSide().getJoins().iterator().hasNext());
    em.close();
}

Example 8 with EntityGraph

use of javax.persistence.EntityGraph in project hibernate-orm by hibernate.

the class EntityGraphLoadPlanBuilderTest method testBasicElementCollections.

@Test
public void testBasicElementCollections() {
    EntityManager em = getOrCreateEntityManager();
    EntityGraph eg = em.createEntityGraph(Dog.class);
    eg.addAttributeNodes("favorites");
    //WTF name!!!
    LoadPlan loadLoadPlan = buildLoadPlan(eg, Mode.LOAD, Dog.class);
    LoadPlanTreePrinter.INSTANCE.logTree(loadLoadPlan, new AliasResolutionContextImpl(sfi()));
    QuerySpace querySpace = loadLoadPlan.getQuerySpaces().getRootQuerySpaces().iterator().next();
    Iterator<Join> iterator = querySpace.getJoins().iterator();
    assertTrue(iterator.hasNext());
    Join collectionJoin = iterator.next();
    assertEquals(QuerySpace.Disposition.COLLECTION, collectionJoin.getRightHandSide().getDisposition());
    assertFalse(iterator.hasNext());
    //----------------------------------------------------------------
    LoadPlan fetchLoadPlan = buildLoadPlan(eg, Mode.FETCH, Dog.class);
    LoadPlanTreePrinter.INSTANCE.logTree(fetchLoadPlan, new AliasResolutionContextImpl(sfi()));
    querySpace = fetchLoadPlan.getQuerySpaces().getRootQuerySpaces().iterator().next();
    iterator = querySpace.getJoins().iterator();
    assertTrue(iterator.hasNext());
    collectionJoin = iterator.next();
    assertEquals(QuerySpace.Disposition.COLLECTION, collectionJoin.getRightHandSide().getDisposition());
    assertFalse(iterator.hasNext());
    em.close();
}

Example 9 with EntityGraph

use of javax.persistence.EntityGraph in project hibernate-orm by hibernate.

the class MetamodelImpl method findEntityGraphsByType.

@Override
@SuppressWarnings("unchecked")
public <T> List<EntityGraph<? super T>> findEntityGraphsByType(Class<T> entityClass) {
    final EntityType<T> entityType = entity(entityClass);
    if (entityType == null) {
        throw new IllegalArgumentException("Given class is not an entity : " + entityClass.getName());
    }
    final List<EntityGraph<? super T>> results = new ArrayList<>();
    for (EntityGraph entityGraph : entityGraphMap.values()) {
        if (!EntityGraphImplementor.class.isInstance(entityGraph)) {
            continue;
        }
        final EntityGraphImplementor egi = (EntityGraphImplementor) entityGraph;
        if (egi.appliesTo(entityType)) {
            results.add(egi);
        }
    }
    return results;
}

Example 10 with EntityGraph

use of javax.persistence.EntityGraph in project hibernate-orm by hibernate.

the class AbstractNamedEntityGraphTest method testIt.

@Test
public void testIt() {
    EntityGraph graph = getOrCreateEntityManager().getEntityGraph("Person");
    assertNotNull(graph);
}