Examples of org.apache.cayenne.query.ObjectIdQuery

org.apache.cayenne.query.ObjectIdQuery
A query that matches zero or one object or data row corresponding to the ObjectId. Used internally by Cayenne to lookup objects by id. Notice that cache policies of ObjectIdQuery are different from generic {@link QueryMetadata} cache policies.ObjectIdQuery is special - it is the only query that can be done against Cayenne main cache, thus cache handling is significantly different from all other of the queries. @since 1.2 @author Andrus Adamchik

    }


    private boolean interceptOIDQuery() {
        if (query instanceof ObjectIdQuery) {


            ObjectIdQuery oidQuery = (ObjectIdQuery) query;
            DataRow row = null;


            if (cache != null && !oidQuery.isFetchMandatory()) {
                row = cache.getCachedSnapshot(oidQuery.getObjectId());
            }


            // refresh is forced or not found in cache
            if (row == null) {


                if (oidQuery.isFetchAllowed()) {


                    runQueryInTransaction();
                }
                else {
                    response = new ListResponse();

View Full Code Here


    public void prepareForAccess(Persistent object, String property, boolean lazyFaulting) {
        if (object.getPersistenceState() == PersistenceState.HOLLOW) {


            ObjectId oid = object.getObjectId();
            List<?> objects = performQuery(new ObjectIdQuery(
                    oid,
                    false,
                    ObjectIdQuery.CACHE));


            if (objects.size() == 0) {

View Full Code Here


    }


    protected boolean interceptOIDQuery() {
        if (query instanceof ObjectIdQuery) {
            ObjectIdQuery oidQuery = (ObjectIdQuery) query;


            if (!oidQuery.isFetchMandatory() && !oidQuery.isFetchingDataRows()) {
                Object object = actingContext.getGraphManager().getNode(
                        oidQuery.getObjectId());
                if (object != null) {


                    // do not return hollow objects
                    if (((Persistent) object).getPersistenceState() == PersistenceState.HOLLOW) {
                        return !DONE;

View Full Code Here

     * @since 1.1
     */
    public DataRow getCachedSnapshot(ObjectId oid) {


        if (context != null && context.getChannel() != null) {
            ObjectIdQuery query = new CachedSnapshotQuery(oid);
            List<?> results = context.getChannel().onQuery(context, query).firstList();
            return results.isEmpty() ? null : (DataRow) results.get(0);
        }
        else {
            return null;

View Full Code Here

        if (id.isTemporary()) {
            return null;
        }


        // skip context cache lookup, go directly to its channel
        Query query = new ObjectIdQuery((ObjectId) nodeId);
        QueryResponse response = context.getChannel().onQuery(context, query);
        List objects = response.firstList();


        if (objects.size() == 0) {
            throw new CayenneRuntimeException("No object for ID exists: " + nodeId);

View Full Code Here

    }


    private boolean interceptOIDQuery() {
        if (query instanceof ObjectIdQuery) {


            ObjectIdQuery oidQuery = (ObjectIdQuery) query;
            ObjectId oid = oidQuery.getObjectId();


            // special handling of temp ids... Return an empty list immediately so that
            // upstream code could throw FaultFailureException, etc. Don't attempt to
            // translate and run the query. See for instance CAY-1651
            if (oid.isTemporary() && !oid.isReplacementIdAttached()) {
                response = new ListResponse();
                return DONE;
            }


            DataRow row = null;


            if (cache != null && !oidQuery.isFetchMandatory()) {
                row = cache.getCachedSnapshot(oidQuery.getObjectId());
            }


            // refresh is forced or not found in cache
            if (row == null) {


                if (oidQuery.isFetchAllowed()) {


                    runQueryInTransaction();
                }
                else {
                    response = new ListResponse();

View Full Code Here

     * @return A persistent object that matched the id, null if no matching objects were
     *         found
     * @throws CayenneRuntimeException if more than one object matched ObjectId.
     */
    public static Object objectForPK(ObjectContext context, ObjectId id) {
        return objectForQuery(context, new ObjectIdQuery(id, false, ObjectIdQuery.CACHE));
    }

View Full Code Here


        ObjectId objectId = new ObjectId(objEntity.getName(), pkName, id);


        int refreshMode = (refresh) ? ObjectIdQuery.CACHE_REFRESH : ObjectIdQuery.CACHE;


        ObjectIdQuery objectIdQuery = new ObjectIdQuery(objectId, false, refreshMode);


        return (DataObject) DataObjectUtils.objectForQuery(getDataContext(), objectIdQuery);
    }

View Full Code Here

            String entityName = UuidCoder.getEntityName(uuid);


            ObjEntity entity = resolver.getObjEntity(entityName);
            ObjectId id = new UuidCoder(entity).toObjectId(uuid);


            Object object = Cayenne.objectForQuery(context, new ObjectIdQuery(id));
            if (object == null) {
                return Collections.EMPTY_MAP;
            }
            else {
                return Collections.singletonMap(uuid, object);

View Full Code Here

                o1.getObjectId());


        assertNull(o2);
        // now fetch it fresh


        o2 = (ClientMtTable1) c2.performQuery(new ObjectIdQuery(o1.getObjectId())).get(0);
        assertNotNull(o2);


        assertEquals("X", o2.getGlobalAttribute1());
        assertEquals(PersistenceState.COMMITTED, o2.getPersistenceState());
        assertFalse(c1.internalGraphManager().hasChanges());

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of org.apache.cayenne.query.ObjectIdQuery

com.adaptrex.core.persistence.cayenne.CayenneAssociationType

com.adaptrex.core.persistence.cayenne.CayenneCollectionType

com.adaptrex.core.persistence.cayenne.CayennePersistenceManager

org.apache.cayenne.access.ChildDiffLoader

org.apache.cayenne.access.DataContexQuoteTest

org.apache.cayenne.access.DataContext

org.apache.cayenne.access.DataContextEntityWithMeaningfulPKTest

org.apache.cayenne.access.DataContextObjectIdQueryTest

org.apache.cayenne.access.DataContextObjectTrackingTest

org.apache.cayenne.access.DataContextQueryAction

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.