Examples with ObjectSelect org.apache.cayenne.query.ObjectSelect used on opensource projects

Example 1 with ObjectSelect

use of org.apache.cayenne.query.ObjectSelect in project cayenne by apache.

the class DataDomainFiltersIT method testOnQuery_Blocking.

@Test
public void testOnQuery_Blocking() {
    DataDomain domain = runtime.getDataDomain();
    QueryResponse r1 = new ListResponse();
    QueryResponse r2 = new ListResponse();
    DataChannelQueryFilter f1 = (originatingContext, query, filterChain) -> r1;
    DataChannelQueryFilter f2 = (originatingContext, query, filterChain) -> r2;
    domain.queryFilters.add(f1);
    domain.queryFilters.add(f2);
    ObjectSelect<Artist> query = ObjectSelect.query(Artist.class);
    QueryResponse response = domain.onQuery(context, query);
    assertSame(r2, response);
}

Example 2 with ObjectSelect

use of org.apache.cayenne.query.ObjectSelect in project cayenne by apache.

the class ClientServerChannelQueryIT method testSelectQueryEntityNameRoot.

@Test
public void testSelectQueryEntityNameRoot() throws Exception {
    createTwoMtTable1sAnd2sDataSet();
    ObjectSelect q = ObjectSelect.query(MtTable1.class);
    List<?> results = context.performQuery(q);
    assertEquals(2, results.size());
    assertTrue(results.get(0) instanceof ClientMtTable1);
}

Example 3 with ObjectSelect

use of org.apache.cayenne.query.ObjectSelect in project cayenne by apache.

the class ClientServerChannelQueryIT method testSelectQueryOrdering.

@Test
public void testSelectQueryOrdering() throws Exception {
    createTwoMtTable1sAnd2sDataSet();
    ObjectSelect q = ObjectSelect.query(MtTable1.class).orderBy(ClientMtTable1.GLOBAL_ATTRIBUTE1.asc());
    List<?> results = context.performQuery(q);
    assertEquals(2, results.size());
    ClientMtTable1 o1 = (ClientMtTable1) results.get(0);
    ClientMtTable1 o2 = (ClientMtTable1) results.get(1);
    assertTrue(o1.getGlobalAttribute1().compareTo(o2.getGlobalAttribute1()) < 0);
    // now run the same query with reverse ordering to check that the first ordering
    // result wasn't coincidental.
    q.getOrderings().clear();
    q.orderBy(ClientMtTable1.GLOBAL_ATTRIBUTE1.desc());
    List<?> results1 = context.performQuery(q);
    assertEquals(2, results1.size());
    ClientMtTable1 o3 = (ClientMtTable1) results1.get(0);
    ClientMtTable1 o4 = (ClientMtTable1) results1.get(1);
    assertTrue(o3.getGlobalAttribute1().compareTo(o4.getGlobalAttribute1()) > 0);
}

Example 4 with ObjectSelect

use of org.apache.cayenne.query.ObjectSelect in project cayenne by apache.

the class DataDomainFiltersIT method testOnQuery_FilterOrdering.

@Test
public void testOnQuery_FilterOrdering() {
    DataDomain domain = runtime.getDataDomain();
    List<String> results = new ArrayList<>();
    DataChannelQueryFilter f1 = (originatingContext, query, filterChain) -> {
        results.add("f1start");
        QueryResponse response = filterChain.onQuery(originatingContext, query);
        results.add("f1end");
        return response;
    };
    DataChannelQueryFilter f2 = (originatingContext, query, filterChain) -> {
        results.add("f2start");
        QueryResponse response = filterChain.onQuery(originatingContext, query);
        results.add("f2end");
        return response;
    };
    domain.queryFilters.add(f1);
    domain.queryFilters.add(f2);
    ObjectSelect<Artist> query = ObjectSelect.query(Artist.class);
    QueryResponse response = domain.onQuery(context, query);
    assertNotNull(response);
    assertEquals(4, results.size());
    assertEquals("f2start", results.get(0));
    assertEquals("f1start", results.get(1));
    assertEquals("f1end", results.get(2));
    assertEquals("f2end", results.get(3));
}

Example 5 with ObjectSelect

use of org.apache.cayenne.query.ObjectSelect in project cayenne by apache.

the class ObjectIdBatchFault method fetchObjects.

private Map<String, Object> fetchObjects() {
    if (sources == null) {
        return Collections.emptyMap();
    }
    EntityResolver resolver = context.getEntityResolver();
    // reasons
    if (sources.size() == 1) {
        String uuid = sources.get(0).getId();
        String entityName = EntityIdCoder.getEntityName(uuid);
        ObjEntity entity = resolver.getObjEntity(entityName);
        ObjectId id = new EntityIdCoder(entity).toObjectId(uuid);
        Object object = Cayenne.objectForQuery(context, new ObjectIdQuery(id));
        if (object == null) {
            return Collections.emptyMap();
        } else {
            return Collections.singletonMap(uuid, object);
        }
    }
    Map<String, ObjectSelect<DataObject>> queriesByEntity = new HashMap<>();
    Map<String, EntityIdCoder> codersByEntity = new HashMap<>();
    for (ObjectIdBatchSourceItem source : sources) {
        String uuid = source.getId();
        String entityName = EntityIdCoder.getEntityName(uuid);
        EntityIdCoder coder = codersByEntity.get(entityName);
        ObjectSelect<DataObject> query;
        if (coder == null) {
            coder = new EntityIdCoder(resolver.getObjEntity(entityName));
            codersByEntity.put(entityName, coder);
            query = ObjectSelect.query(DataObject.class, entityName);
            queriesByEntity.put(entityName, query);
        } else {
            query = queriesByEntity.get(entityName);
        }
        ObjectId id = coder.toObjectId(uuid);
        Expression idExp = ExpressionFactory.matchAllDbExp(id.getIdSnapshot(), Expression.EQUAL_TO);
        query.or(idExp);
    }
    int capacity = (int) Math.ceil(sources.size() / 0.75d);
    Map<String, Object> results = new HashMap<>(capacity);
    for (ObjectSelect<DataObject> query : queriesByEntity.values()) {
        EntityIdCoder coder = codersByEntity.get(query.getEntityName());
        List<DataObject> objects = query.select(context);
        for (DataObject object : objects) {
            String uuid = coder.toStringId(object.getObjectId());
            results.put(uuid, object);
        }
    }
    return results;
}