Package org.apache.cayenne.query

Examples of org.apache.cayenne.query.RefreshQuery

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     * @since 3.0
     */
    private boolean interceptRefreshQuery() {

        if (query instanceof RefreshQuery) {
            RefreshQuery refreshQuery = (RefreshQuery) query;

            if (refreshQuery.isRefreshAll()) {

                // not sending any events - peer contexts will not get refreshed
                if (domain.getSharedSnapshotCache() != null) {
                    domain.getSharedSnapshotCache().clear();
                }
                context.getQueryCache().clear();

                GenericResponse response = new GenericResponse();
                response.addUpdateCount(1);
                this.response = response;
                return DONE;
            }

            Collection objects = refreshQuery.getObjects();
            if (objects != null && !objects.isEmpty()) {

                Collection ids = new ArrayList(objects.size());
                Iterator it = objects.iterator();
                while (it.hasNext()) {
                    Persistent object = (Persistent) it.next();
                    ids.add(object.getObjectId());
                }

                if (domain.getSharedSnapshotCache() != null) {
                    // send an event for removed snapshots
                    domain.getSharedSnapshotCache().processSnapshotChanges(
                            context.getObjectStore(),
                            Collections.EMPTY_MAP,
                            Collections.EMPTY_LIST,
                            ids,
                            Collections.EMPTY_LIST);
                }

                GenericResponse response = new GenericResponse();
                response.addUpdateCount(1);
                this.response = response;
                return DONE;
            }

            // 3. refresh query - this shouldn't normally happen as child datacontext
            // usually does a cascading refresh
            if (refreshQuery.getQuery() != null) {
                Query cachedQuery = refreshQuery.getQuery();

                String cacheKey = cachedQuery
                        .getMetaData(context.getEntityResolver())
                        .getCacheKey();
                context.getQueryCache().remove(cacheKey);

                this.response = domain.onQuery(context, cachedQuery);
                return DONE;
            }

            // 4. refresh groups...
            if (refreshQuery.getGroupKeys() != null
                    && refreshQuery.getGroupKeys().length > 0) {

                String[] groups = refreshQuery.getGroupKeys();
                for (int i = 0; i < groups.length; i++) {
                    domain.getQueryCache().removeGroup(groups[i]);
                }

                GenericResponse response = new GenericResponse();
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        };
    }

    private boolean interceptRefreshQuery() {
        if (query instanceof RefreshQuery) {
            RefreshQuery refreshQuery = (RefreshQuery) query;

            CayenneContext context = (CayenneContext) actingContext;

            // handle 4 separate scenarious, but do not combine them as it will be
            // unclear how to handle cascading behavior

            // 1. refresh all
            if (refreshQuery.isRefreshAll()) {

                invalidateLocally(context.internalGraphManager(), context
                        .internalGraphManager()
                        .registeredNodes()
                        .iterator());
                context.getQueryCache().clear();

                // cascade
                return !DONE;
            }

            // 2. invalidate object collection
            Collection objects = refreshQuery.getObjects();
            if (objects != null && !objects.isEmpty()) {

                invalidateLocally(context.internalGraphManager(), objects.iterator());

                // cascade
                return !DONE;
            }

            // 3. refresh query - have to do it eagerly to refresh the objects involved
            if (refreshQuery.getQuery() != null) {
                Query cachedQuery = refreshQuery.getQuery();

                String cacheKey = cachedQuery
                        .getMetaData(context.getEntityResolver())
                        .getCacheKey();
                context.getQueryCache().remove(cacheKey);

                this.response = context.performGenericQuery(cachedQuery);

                // do not cascade to avoid running query twice
                return DONE;
            }

            // 4. refresh groups...
            if (refreshQuery.getGroupKeys() != null
                    && refreshQuery.getGroupKeys().length > 0) {

                String[] groups = refreshQuery.getGroupKeys();
                for (int i = 0; i < groups.length; i++) {
                    context.getQueryCache().removeGroup(groups[i]);
                }

                // cascade group invalidation
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     * @since 3.0
     */
    private boolean interceptRefreshQuery() {

        if (query instanceof RefreshQuery) {
            RefreshQuery refreshQuery = (RefreshQuery) query;

            if (refreshQuery.isRefreshAll()) {

                // not sending any events - peer contexts will not get refreshed
                if (domain.getSharedSnapshotCache() != null) {
                    domain.getSharedSnapshotCache().clear();
                }
                context.getQueryCache().clear();

                GenericResponse response = new GenericResponse();
                response.addUpdateCount(1);
                this.response = response;
                return DONE;
            }

            Collection<Persistent> objects = (Collection<Persistent>) refreshQuery.getObjects();
            if (objects != null && !objects.isEmpty()) {

                Collection<ObjectId> ids = new ArrayList<ObjectId>(objects.size());
                for (final Persistent object : objects) {
                    ids.add(object.getObjectId());
                }

                if (domain.getSharedSnapshotCache() != null) {
                    // send an event for removed snapshots
                    domain.getSharedSnapshotCache().processSnapshotChanges(context.getObjectStore(),
                            Collections.EMPTY_MAP, Collections.EMPTY_LIST, ids, Collections.EMPTY_LIST);
                }

                GenericResponse response = new GenericResponse();
                response.addUpdateCount(1);
                this.response = response;
                return DONE;
            }

            // 3. refresh query - this shouldn't normally happen as child
            // datacontext
            // usually does a cascading refresh
            if (refreshQuery.getQuery() != null) {
                Query cachedQuery = refreshQuery.getQuery();

                String cacheKey = cachedQuery.getMetaData(context.getEntityResolver()).getCacheKey();
                context.getQueryCache().remove(cacheKey);

                this.response = domain.onQuery(context, cachedQuery);
                return DONE;
            }

            // 4. refresh groups...
            if (refreshQuery.getGroupKeys() != null && refreshQuery.getGroupKeys().length > 0) {

                String[] groups = refreshQuery.getGroupKeys();
                for (String group : groups) {
                    domain.getQueryCache().removeGroup(group);
                }

                GenericResponse response = new GenericResponse();
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        if (objects == null) {
            throw new NullPointerException("Null collection of objects to invalidate");
        }

        if (!objects.isEmpty()) {
            performGenericQuery(new RefreshQuery(objects));
        }
    }
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    /**
     * @since 3.1
     */
    public <T> void invalidateObjects(T... objects) {
        if (objects != null && objects.length > 0) {
            performGenericQuery(new RefreshQuery(Arrays.asList(objects)));
        }
    }
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        a1.resetCallbackFlags();
        listener.reset();
        assertEquals(0, a1.getPostLoaded());
        assertNull(listener.getPublicCalledbackEntity());

        context.performQuery(new RefreshQuery(a1));
        assertEquals(0, a1.getPostLoaded());
        assertNull(listener.getPublicCalledbackEntity());

        a1.getArtistName();
        assertEquals(1, a1.getPostLoaded());
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            manager.postEvent(e, DataChannel.GRAPH_CHANGED_SUBJECT);
        }
    }

    public void invalidateObjects(Collection objects) {
        performGenericQuery(new RefreshQuery(objects));
    }
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    assertEquals(1, o2.getDefaultTable4s().size());
    getContext().commitChanges();
    assertEquals(1, o2.getDefaultTable4s().size());

    getContext().performQuery(new RefreshQuery());

    // note that the old to-many is only refreshed after invalidation with
    // RefreshQuery... should this be treated as a bug?
    assertEquals(0, o1.getDefaultTable4s().size());
    assertEquals(1, o2.getDefaultTable4s().size());
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    assertEquals(1, o2.getDefaultTable4s().size());

    // there is a bug in RefreshQuery that fails to invalidate to-many on
    // the client - so working around it be creating a new context; still
    // running the query though to refresh the server
    clientContext.performQuery(new RefreshQuery());

    clientContext = getClientContext(true);
    o1 = (DefaultsTable3) DataObjectUtils.objectForPK(clientContext,
        DefaultsTable3.class, Collections.singletonMap("id", 1));
    o2 = (DefaultsTable3) DataObjectUtils.objectForPK(clientContext,
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        if (objects == null) {
            throw new NullPointerException("Null collection of objects to invalidate");
        }

        if (!objects.isEmpty()) {
            performGenericQuery(new RefreshQuery(objects));
        }
    }
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