Examples of org.apache.cayenne.query.RelationshipQuery

org.apache.cayenne.query.RelationshipQuery
A query that selects objects related to a given object via a mapped relationship. RelationshipQuery is used by Cayenne internally to resolve relationships, and is rarely executed by the application directly, although this of course is possible too. @since 1.2 @author Andrus Adamchik


    private boolean interceptRelationshipQuery() {


        if (query instanceof RelationshipQuery) {


            RelationshipQuery relationshipQuery = (RelationshipQuery) query;
            if (relationshipQuery.isRefreshing()) {
                return !DONE;
            }


            ObjRelationship relationship = relationshipQuery.getRelationship(domain
                    .getEntityResolver());


            // check if we can derive target PK from FK... this implies that the
            // relationship is to-one
            if (relationship.isSourceIndependentFromTargetChange()) {
                return !DONE;
            }


            DataRow sourceRow = cache.getCachedSnapshot(relationshipQuery.getObjectId());


            if (sourceRow == null) {
                return !DONE;
            }

View Full Code Here

                    if (isTransientSource()) {
                        localList = new LinkedList();
                    }
                    else {
                        localList = source.getObjectContext().performQuery(
                                new RelationshipQuery(
                                        source.getObjectId(),
                                        relationship,
                                        false));
                    }

View Full Code Here


        return target;
    }


    Object doResolveFault(Persistent sourceObject, String relationshipName) {
        RelationshipQuery query = new RelationshipQuery(
                sourceObject.getObjectId(),
                relationshipName,
                false);


        List objects = sourceObject.getObjectContext().performQuery(query);

View Full Code Here


    private boolean interceptRelationshipQuery() {


        if (query instanceof RelationshipQuery) {


            RelationshipQuery relationshipQuery = (RelationshipQuery) query;
            if (relationshipQuery.isRefreshing()) {
                return !DONE;
            }


            ObjRelationship relationship = relationshipQuery.getRelationship(domain
                    .getEntityResolver());


            // check if we can derive target PK from FK... this implies that the
            // relationship is to-one
            if (relationship.isSourceIndependentFromTargetChange()) {
                return !DONE;
            }


            if (cache == null) {
                return !DONE;
            }


            DataRow sourceRow = cache.getCachedSnapshot(relationshipQuery.getObjectId());
            if (sourceRow == null) {
                return !DONE;
            }


            // we can assume that there is one and only one DbRelationship as

View Full Code Here

    }


    protected boolean interceptRelationshipQuery() {


        if (query instanceof RelationshipQuery) {
            RelationshipQuery relationshipQuery = (RelationshipQuery) query;
            if (!relationshipQuery.isRefreshing()) {


                // don't intercept to-many relationships if fetch is done to the same
                // context as the root context of this action - this will result in an
                // infinite loop.


                if (targetContext == null
                        && relationshipQuery.getRelationship(
                                actingContext.getEntityResolver()).isToMany()) {
                    return !DONE;
                }


                ObjectId id = relationshipQuery.getObjectId();
                Object object = actingContext.getGraphManager().getNode(id);


                if (object != null) {


                    ClassDescriptor descriptor = actingContext
                            .getEntityResolver()
                            .getClassDescriptor(id.getEntityName());


                    if (!descriptor.isFault(object)) {


                        ArcProperty property = (ArcProperty) descriptor
                                .getProperty(relationshipQuery.getRelationshipName());


                        if (!property.isFault(object)) {


                            Object related = property.readPropertyDirectly(object);

View Full Code Here


        context.performQuery(new SQLTemplate(
                Artist.class,
                "UPDATE ARTIST SET ARTIST_NAME = 'a2' WHERE ARTIST_ID = 1"));


        RelationshipQuery toOne = new RelationshipQuery(
                p.getObjectId(),
                Painting.TO_ARTIST_PROPERTY,
                false);


        List<Artist> related = context.performQuery(toOne);

View Full Code Here


        context.performQuery(new SQLTemplate(
                Artist.class,
                "UPDATE ARTIST SET ARTIST_NAME = 'a2' WHERE ARTIST_ID = 1"));


        RelationshipQuery toOne = new RelationshipQuery(
                p.getObjectId(),
                Painting.TO_ARTIST_PROPERTY,
                true);


        List<Artist> related = context.performQuery(toOne);

View Full Code Here

    }


    protected boolean interceptRelationshipQuery() {


        if (query instanceof RelationshipQuery) {
            RelationshipQuery relationshipQuery = (RelationshipQuery) query;
            if (!relationshipQuery.isRefreshing()) {


                // don't intercept to-many relationships if fetch is done to the same
                // context as the root context of this action - this will result in an
                // infinite loop.


                if (targetContext == null
                        && relationshipQuery.getRelationship(
                                actingContext.getEntityResolver()).isToMany()) {
                    return !DONE;
                }


                ObjectId id = relationshipQuery.getObjectId();
                Object object = actingContext.getGraphManager().getNode(id);


                if (object != null) {


                    ClassDescriptor descriptor = actingContext
                            .getEntityResolver()
                            .getClassDescriptor(id.getEntityName());


                    if (!descriptor.isFault(object)) {


                        ArcProperty property = (ArcProperty) descriptor
                                .getProperty(relationshipQuery.getRelationshipName());


                        if (!property.isFault(object)) {


                            Object related = property.readPropertyDirectly(object);

View Full Code Here


    private boolean interceptRelationshipQuery() {


        if (query instanceof RelationshipQuery) {


            RelationshipQuery relationshipQuery = (RelationshipQuery) query;
            if (relationshipQuery.isRefreshing()) {
                return !DONE;
            }


            ObjRelationship relationship = relationshipQuery.getRelationship(domain
                    .getEntityResolver());


            // check if we can derive target PK from FK... this implies that the
            // relationship is to-one
            if (relationship.isSourceIndependentFromTargetChange()) {
                return !DONE;
            }


            if (cache == null) {
                return !DONE;
            }


            DataRow sourceRow = cache.getCachedSnapshot(relationshipQuery.getObjectId());
            if (sourceRow == null) {
                return !DONE;
            }


            // we can assume that there is one and only one DbRelationship as

View Full Code Here


    private boolean interceptRelationshipQuery() {


        if (query instanceof RelationshipQuery) {


            RelationshipQuery relationshipQuery = (RelationshipQuery) query;
            if (relationshipQuery.isRefreshing()) {
                return !DONE;
            }


            ObjRelationship relationship = relationshipQuery.getRelationship(domain
                    .getEntityResolver());


            // check if we can derive target PK from FK... this implies that the
            // relationship is to-one
            if (relationship.isSourceIndependentFromTargetChange()) {
                return !DONE;
            }


            if (cache == null) {
                return !DONE;
            }


            DataRow sourceRow = cache.getCachedSnapshot(relationshipQuery.getObjectId());
            if (sourceRow == null) {
                return !DONE;
            }


            // we can assume that there is one and only one DbRelationship as

View Full Code Here

0 1 2 3 4 5

TOP

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

org.apache.cayenne.access.DataContexQuoteTest

org.apache.cayenne.access.DataContextFaults$ToOneFault

org.apache.cayenne.access.DataContextRelationshipQueryTest

org.apache.cayenne.access.DataDomainQueryAction

org.apache.cayenne.access.QuotedIdentifiersTest

org.apache.cayenne.access.ToManyList

org.apache.cayenne.access.ToOneFault

org.apache.cayenne.exp.Expression

org.apache.cayenne.map.ObjEntity

org.apache.cayenne.map.ObjRelationship

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.