Examples with ValueHolder org.apache.cayenne.ValueHolder used on opensource projects

Example 1 with ValueHolder

use of org.apache.cayenne.ValueHolder in project cayenne by apache.

the class ClientServerChannelIT method testOnQueryPrefetchingToManyEmpty.

@Test
public void testOnQueryPrefetchingToManyEmpty() throws Exception {
    createTwoMtTable1sAnd2sDataSet();
    SelectQuery q = new SelectQuery(ClientMtTable1.class);
    q.addOrdering(ClientMtTable1.GLOBAL_ATTRIBUTE1_PROPERTY, SortOrder.ASCENDING);
    q.addPrefetch(ClientMtTable1.TABLE2ARRAY_PROPERTY);
    final List<?> results = clientServerChannel.onQuery(null, q).firstList();
    queryInterceptor.runWithQueriesBlocked(new UnitTestClosure() {

        public void execute() {
            ClientMtTable1 o2 = (ClientMtTable1) results.get(1);
            assertNull(o2.getObjectContext());
            List<?> children2 = o2.getTable2Array();
            assertNotNull(children2);
            assertFalse(((ValueHolder) children2).isFault());
            assertEquals(0, children2.size());
        }
    });
}

Example 2 with ValueHolder

use of org.apache.cayenne.ValueHolder in project cayenne by apache.

the class ClientServerChannelQueryIT method testSelectQueryPrefetchToOne.

@Test
public void testSelectQueryPrefetchToOne() throws Exception {
    createTwoMtTable1sAnd2sDataSet();
    SelectQuery q = new SelectQuery(ClientMtTable2.class, ExpressionFactory.exp("globalAttribute = 'g1'"));
    q.addPrefetch(ClientMtTable2.TABLE1_PROPERTY);
    List<?> results = context.performQuery(q);
    assertEquals(1, results.size());
    ClientMtTable2 result = (ClientMtTable2) results.get(0);
    ValueHolder holder = result.getTable1Direct();
    assertNotNull(holder);
    assertTrue(holder instanceof PersistentObjectHolder);
    PersistentObjectHolder objectHolder = (PersistentObjectHolder) holder;
    assertFalse(objectHolder.isFault());
    ClientMtTable1 target = (ClientMtTable1) objectHolder.getValue();
    assertNotNull(target);
}

Example 3 with ValueHolder

use of org.apache.cayenne.ValueHolder in project cayenne by apache.

the class FlattenedPrefetchIT method testJointManyToMany.

@Test
public void testJointManyToMany() throws Exception {
    createPrefetchDataSet1();
    SelectQuery q = new SelectQuery(Artist.class);
    q.addPrefetch(Artist.GROUP_ARRAY.joint());
    final List<Artist> objects = context.performQuery(q);
    queryInterceptor.runWithQueriesBlocked(new UnitTestClosure() {

        public void execute() {
            assertEquals(3, objects.size());
            for (Artist a : objects) {
                List<ArtGroup> list = a.getGroupArray();
                assertNotNull(list);
                assertFalse("artist's groups not resolved: " + a, ((ValueHolder) list).isFault());
                assertTrue(list.size() > 0);
                for (ArtGroup g : list) {
                    assertEquals(PersistenceState.COMMITTED, g.getPersistenceState());
                }
                // assert no duplicates
                Set<ArtGroup> s = new HashSet<ArtGroup>(list);
                assertEquals(s.size(), list.size());
            }
        }
    });
}

Example 4 with ValueHolder

use of org.apache.cayenne.ValueHolder in project cayenne by apache.

the class FlattenedPrefetchIT method testJointMultiPrefetch.

@Test
public void testJointMultiPrefetch() throws Exception {
    createPrefetchDataSet2();
    SelectQuery q = new SelectQuery(Painting.class);
    q.addPrefetch(Painting.TO_ARTIST.joint());
    q.addPrefetch(Painting.TO_ARTIST.dot(Artist.GROUP_ARRAY).joint());
    final List<Painting> objects = context.performQuery(q);
    queryInterceptor.runWithQueriesBlocked(new UnitTestClosure() {

        public void execute() {
            assertEquals(3, objects.size());
            for (Painting p : objects) {
                Artist a = p.getToArtist();
                assertEquals(PersistenceState.COMMITTED, a.getPersistenceState());
                List<ArtGroup> list = a.getGroupArray();
                assertNotNull(list);
                assertFalse("artist's groups not resolved: " + a, ((ValueHolder) list).isFault());
                assertTrue(list.size() > 0);
                for (ArtGroup g : list) {
                    assertEquals(PersistenceState.COMMITTED, g.getPersistenceState());
                }
                // assert no duplicates
                Set<ArtGroup> s = new HashSet<ArtGroup>(list);
                assertEquals(s.size(), list.size());
            }
        }
    });
}

Example 5 with ValueHolder

use of org.apache.cayenne.ValueHolder in project cayenne by apache.

the class JointPrefetchIT method testJointPrefetchMultiStep.

@Test
public void testJointPrefetchMultiStep() throws Exception {
    createJointPrefetchDataSet();
    // query with to-many joint prefetches
    SelectQuery<Artist> q = new SelectQuery<>(Artist.class);
    q.addPrefetch(Artist.PAINTING_ARRAY.dot(Painting.TO_GALLERY).joint());
    final DataContext context = this.context;
    // make sure phantomly prefetched objects are not deallocated
    context.getObjectStore().objectMap = new HashMap<>();
    // sanity check...
    DataObject g1 = (DataObject) context.getGraphManager().getNode(new ObjectId("Gallery", Gallery.GALLERY_ID_PK_COLUMN, 33001));
    assertNull(g1);
    final List<Artist> objects = q.select(context);
    queryInterceptor.runWithQueriesBlocked(() -> {
        assertEquals(3, objects.size());
        for (Artist a : objects) {
            ValueHolder list = (ValueHolder) a.getPaintingArray();
            assertNotNull(list);
            // intermediate relationship is not fetched...
            assertTrue(list.isFault());
        }
        // however both galleries must be in memory...
        DataObject g11 = (DataObject) context.getGraphManager().getNode(new ObjectId("Gallery", Gallery.GALLERY_ID_PK_COLUMN, 33001));
        assertNotNull(g11);
        assertEquals(PersistenceState.COMMITTED, g11.getPersistenceState());
        DataObject g2 = (DataObject) context.getGraphManager().getNode(new ObjectId("Gallery", Gallery.GALLERY_ID_PK_COLUMN, 33002));
        assertNotNull(g2);
        assertEquals(PersistenceState.COMMITTED, g2.getPersistenceState());
    });
}