Package org.apache.cayenne.query

Examples of org.apache.cayenne.query.PrefetchTreeNode

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        @Override
        void convert(List<DataRow> mainRows) {

            ClassDescriptor descriptor = metadata.getClassDescriptor();
            PrefetchTreeNode prefetchTree = metadata.getPrefetchTree();

            PrefetchProcessorNode node = toResultsTree(descriptor, prefetchTree, mainRows);
            List<Persistent> objects = node.getObjects();
            updateResponse(mainRows, objects != null
                    ? objects
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            for (int i = 0; i < len; i++) {
                rowsColumn.add((DataRow) rows.get(i)[position]);
            }

            if (prefetchTree != null) {
                PrefetchTreeNode prefetchTreeNode = null;
                for (PrefetchTreeNode prefetch : prefetchTree.getChildren()) {
                    if (descriptor.getEntity().getName().equals(prefetch.getEntityName())) {
                        if (prefetchTreeNode == null) {
                            prefetchTreeNode = new PrefetchTreeNode();
                        }
                        PrefetchTreeNode addPath = prefetchTreeNode.addPath(prefetch
                                .getPath());
                        addPath.setSemantics(PrefetchTreeNode.JOINT_PREFETCH_SEMANTICS);
                        addPath.setPhantom(false);
                    }
                }
                prefetchTree = prefetchTreeNode;
            }
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            // a joint prefetch warrants full row compare

            final boolean[] compareFullRows = new boolean[1];

            final PrefetchTreeNode rootPrefetch = md.getPrefetchTree();

            if (rootPrefetch != null) {
                rootPrefetch.traverse(new PrefetchProcessor() {

                    public void finishPrefetch(PrefetchTreeNode node) {
                    }

                    public boolean startDisjointPrefetch(PrefetchTreeNode node) {
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                        + "#result('DATE_OF_BIRTH' 'java.util.Date'), "
                        + "#result('t0.ARTIST_ID' 'int' '' 'ARTIST_ID') "
                        + "FROM ARTIST t0, PAINTING t1 "
                        + "WHERE t0.ARTIST_ID = t1.ARTIST_ID");

        PrefetchTreeNode prefetch = q.addPrefetch(Artist.PAINTING_ARRAY_PROPERTY);
        assertEquals(
                "Default semantics for SQLTemplate is assumed to be joint.",
                PrefetchTreeNode.JOINT_PREFETCH_SEMANTICS,
                prefetch.getSemantics());
        q.setFetchingDataRows(false);

        final List<?> objects = context.performQuery(q);

        queryInterceptor.runWithQueriesBlocked(new UnitTestClosure() {
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            return super.visitSubselect(expression);
        }

        private void prepareFetchJoin(EJBQLJoin join) {
            if (prefetchTree == null) {
                prefetchTree = new PrefetchTreeNode();
            }
            EJBQLPath fetchJoin = (EJBQLPath) join.getChild(0);
            addPath(fetchJoin);

            PrefetchTreeNode node = prefetchTree.addPath(fetchJoin.getRelativePath());
            node.setSemantics(PrefetchTreeNode.JOINT_PREFETCH_SEMANTICS);
            node.setPhantom(false);
            node.setEjbqlPathEntityId(fetchJoin.getChild(0).getText());
        }
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        return false;
    }

    private void addPrefetchedColumnsIfAny(final String visitedIdentifier) {
        PrefetchTreeNode prefetchTree = context.getCompiledExpression().getPrefetchTree();
        if (prefetchTree != null) {
            for (PrefetchTreeNode prefetch : prefetchTree.adjacentJointNodes()) {
                ClassDescriptor descriptor = context.getEntityDescriptor(prefetch
                        .getEjbqlPathEntityId());
                if (visitedIdentifier.equals(prefetch.getEjbqlPathEntityId())) {
                    DbEntity table = descriptor.getRootDbEntities().iterator().next();
                    ObjEntity objectEntity = descriptor.getEntity();
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    public void addPrefetch(String prefetch) {
       
        // check if such prefetch already exists
        if (selectQuery.getPrefetchTree() != null) {

            PrefetchTreeNode node = selectQuery.getPrefetchTree().getNode(prefetch);
            if (node != null && !node.isPhantom()) {
                return;
            }
        }

        selectQuery.addPrefetch(prefetch);
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     */
    private void buildRowMapping() {
        final Map<String, ColumnDescriptor> targetSource = new TreeMap<String, ColumnDescriptor>();

        // build a DB path .. find parent node that terminates the joint group...
        PrefetchTreeNode jointRoot = this;
        while (jointRoot.getParent() != null && !jointRoot.isDisjointPrefetch()
                && !jointRoot.isDisjointByIdPrefetch()) {
            jointRoot = jointRoot.getParent();
        }

        final String prefix;
        if (jointRoot != this) {
            Expression objectPath = Expression.fromString(getPath(jointRoot));
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            public boolean isResolvingInherited() {
                return true;
            }
        };

        PrefetchTreeNode tree = new PrefetchTreeNode();
        HierarchicalObjectResolver resolver = new HierarchicalObjectResolver(
                context,
                metadata);
        PrefetchProcessorTreeBuilder builder = new PrefetchProcessorTreeBuilder(
                resolver,
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        ObjEntity e5 = resolver.getObjEntity("ArtistExhibit");

        List<Object> mainRows = new ArrayList<Object>();
        Map<Object, Object> extraRows = new HashMap<Object, Object>();

        PrefetchTreeNode tree = new PrefetchTreeNode();
        tree.addPath(Artist.PAINTING_ARRAY_PROPERTY).setPhantom(false);
        tree.addPath(
                Artist.PAINTING_ARRAY_PROPERTY
                        + "."
                        + Painting.TO_GALLERY_PROPERTY
                        + "."
                        + Gallery.EXHIBIT_ARRAY_PROPERTY).setPhantom(false);
        tree.addPath(Artist.ARTIST_EXHIBIT_ARRAY_PROPERTY).setPhantom(false);

        QueryMetadata metadata = new MockQueryMetadata() {

            @Override
            public ClassDescriptor getClassDescriptor() {
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Related Classes of org.apache.cayenne.query.PrefetchTreeNode

  • org.apache.cayenne.access.ClientServerChannelQueryAction
  • org.apache.cayenne.access.DataContext
  • org.apache.cayenne.access.DataDomainQueryAction
  • org.apache.cayenne.access.DataDomainQueryAction$MixedConversionStrategy
  • org.apache.cayenne.access.DataDomainQueryAction$SingleObjectConversionStrategy
  • org.apache.cayenne.access.HierarchicalObjectResolver$DisjointProcessor
  • org.apache.cayenne.access.jdbc.EJBQLIdentifierColumnsTranslator
  • org.apache.cayenne.access.jdbc.SelectAction
  • org.apache.cayenne.access.JointPrefetchTest
  • org.apache.cayenne.access.PrefetchProcessorJointNode
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