Examples with Join org.hibernate.loader.plan.spi.Join used on opensource projects

Example 1 with Join

use of org.hibernate.loader.plan.spi.Join in project hibernate-orm by hibernate.

the class AliasResolutionContextImpl method dumpJoins.

private void dumpJoins(Iterable<Join> joins, int depth, PrintWriter printWriter) {
    for (Join join : joins) {
        printWriter.println(TreePrinterHelper.INSTANCE.generateNodePrefix(depth) + "JOIN (" + join.getLeftHandSide().getUid() + " -> " + join.getRightHandSide().getUid() + ")");
        dumpQuerySpace(join.getRightHandSide(), depth + 1, printWriter);
    }
}

Example 2 with Join

use of org.hibernate.loader.plan.spi.Join 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 3 with Join

use of org.hibernate.loader.plan.spi.Join in project hibernate-orm by hibernate.

the class EntityGraphLoadPlanBuilderTest method testBasicLoadLoadPlanBuilding.

/**
 * EntityGraph(1):
 *
 * Cat
 *
 * LoadPlan:
 *
 * Cat
 *
 * ---------------------
 *
 * EntityGraph(2):
 *
 * Cat
 * owner -- Person
 *
 * LoadPlan:
 *
 * Cat
 * owner -- Person
 * address --- Address
 * country -- Country
 */
@Test
public void testBasicLoadLoadPlanBuilding() {
    EntityManager em = getOrCreateEntityManager();
    EntityGraph eg = em.createEntityGraph(Cat.class);
    LoadPlan plan = buildLoadPlan(eg, Mode.LOAD, 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.LOAD, 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);
    iterator = addressJoin.getRightHandSide().getJoins().iterator();
    assertTrue(iterator.hasNext());
    Join countryJoin = iterator.next();
    assertNotNull(countryJoin);
    disposition = countryJoin.getRightHandSide().getDisposition();
    assertEquals(QuerySpace.Disposition.ENTITY, disposition);
    assertFalse("The ManyToOne attribute in composite should not be fetched", countryJoin.getRightHandSide().getJoins().iterator().hasNext());
    em.close();
}

Example 4 with Join

use of org.hibernate.loader.plan.spi.Join 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 5 with Join

use of org.hibernate.loader.plan.spi.Join 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();
}