Examples of org.apache.cayenne.map.ObjRelationship

org.apache.cayenne.map.ObjRelationship
Describes an association between two Java classes mapped as source and target ObjEntity. Maps to a path of DbRelationships.

                visitRelationship(property);
                return true;
            }


            private void visitRelationship(ArcProperty property) {
                ObjRelationship rel = property.getRelationship();
                DbRelationship dbRel = rel.getDbRelationships().get(0);


                for (DbJoin join : dbRel.getJoins()) {
                    DbAttribute src = join.getSource();
                    appendColumn(idVar, null, src, fields);
                }

View Full Code Here

            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
            // we previously checked that
            // "!isSourceIndependentFromTargetChange"
            DbRelationship dbRelationship = relationship.getDbRelationships().get(0);


            ObjectId targetId = sourceRow.createTargetObjectId(relationship
                    .getTargetEntityName(), dbRelationship);


            // null id means that FK is null...
            if (targetId == null) {
                this.response = new GenericResponse(Collections.EMPTY_LIST);
                return DONE;
            }


            DataRow targetRow = cache.getCachedSnapshot(targetId);


            if (targetRow != null) {
                this.response = new GenericResponse(Collections.singletonList(targetRow));
                return DONE;
            }


            ObjEntity targetEntity = (ObjEntity) relationship.getTargetEntity();


            // do not create a target hollow object for qualified entities or entities
            // involved in inheritance, as the target object may be null even for non-null
            // FK.
            if (context != null

View Full Code Here


    class JpaManyToOneVisitor extends JpaRelationshipVisitor {


        @Override
        Object createObject(ProjectPath path) {
            ObjRelationship objRelationship = (ObjRelationship) super.createObject(path);
            return objRelationship.getDbRelationships().get(0);
        }

View Full Code Here


    class JpaOneToManyVisitor extends JpaRelationshipVisitor {


        @Override
        Object createObject(ProjectPath path) {
            ObjRelationship objRelationship = (ObjRelationship) super.createObject(path);
            JpaDbRelationship relationship = (JpaDbRelationship) objRelationship
                    .getDbRelationships()
                    .get(0);


            if (relationship != null) {
                JpaOneToMany jpaRelationship = (JpaOneToMany) path.getObject();
                relationship.setMappedBy(jpaRelationship.getMappedBy());
                objRelationship.setMapKey(jpaRelationship.getMapKey());


                objRelationship.setCollectionType(jpaRelationship
                        .getPropertyDescriptor()
                        .getType()
                        .getName());
            }
            return relationship;

View Full Code Here


    class JpaOneToOneVisitor extends JpaRelationshipVisitor {


        @Override
        Object createObject(ProjectPath path) {
            ObjRelationship objRelationship = (ObjRelationship) super.createObject(path);
            JpaDbRelationship relationship = (JpaDbRelationship) objRelationship
                    .getDbRelationships()
                    .get(0);


            if (relationship != null) {
                JpaOneToOne jpaRelationship = (JpaOneToOne) path.getObject();

View Full Code Here


    class JpaManyToManyVisitor extends JpaRelationshipVisitor {


        @Override
        Object createObject(ProjectPath path) {
            ObjRelationship objRelationship = (ObjRelationship) super.createObject(path);
            JpaDbRelationship relationship = (JpaDbRelationship) objRelationship
                    .getDbRelationships()
                    .get(0);


            if (relationship != null) {
                JpaManyToMany jpaRelationship = (JpaManyToMany) path.getObject();

View Full Code Here

        Object createObject(ProjectPath path) {


            JpaRelationship relationship = (JpaRelationship) path.getObject();


            ObjEntity cayenneSrcEntity = (ObjEntity) targetPath.getObject();
            ObjRelationship cayenneRelationship = new ObjRelationship(relationship
                    .getName());


            cayenneSrcEntity.addRelationship(cayenneRelationship);


            JpaEntity jpaTargetEntity = ((JpaEntityMap) path.getRoot())
                    .entityForClass(relationship.getTargetEntityName());


            if (jpaTargetEntity == null) {
                recordConflict(path, "Unknown target entity '"
                        + relationship.getTargetEntityName());
                return null;
            }


            cayenneRelationship.setTargetEntityName(jpaTargetEntity.getName());


            DbEntity cayenneSrcDbEntity = cayenneSrcEntity.getDbEntity();
            DbEntity cayenneTargetDbEntity = cayenneSrcEntity.getDataMap().getDbEntity(
                    jpaTargetEntity.getTable().getName());
            if (cayenneTargetDbEntity == null) {
                cayenneTargetDbEntity = new DbEntity(jpaTargetEntity.getTable().getName());
                cayenneSrcEntity.getDataMap().addDbEntity(cayenneTargetDbEntity);
            }


            JpaDbRelationship dbRelationship = new JpaDbRelationship(cayenneRelationship
                    .getName());
            dbRelationship.setTargetEntity(cayenneTargetDbEntity);
            dbRelationship.setToMany(relationship.isToMany());


            cayenneSrcDbEntity.addRelationship(dbRelationship);
            cayenneRelationship.addDbRelationship(dbRelationship);


            return cayenneRelationship;
        }

View Full Code Here

                    PathComponent<ObjAttribute, ObjRelationship> component = ((Entity) root).lastPathComponent((ASTObjPath) operand, null);
                    ObjAttribute attribute = component.getAttribute();
                    if (attribute != null) {
                        typeName = attribute.getType();
                    } else {
                        ObjRelationship relationship = component.getRelationship();
                        if (relationship != null) {
                            typeName = ((ObjEntity) relationship.getTargetEntity()).getClassName();
                        } else {
                            typeName = "Object";
                        }
                    }
                }

View Full Code Here


                idProperties.add(property);
            }
        }
        else if (property instanceof ArcProperty) {
            ObjRelationship relationship = ((ArcProperty) property).getRelationship();
            ObjRelationship reverseRelationship = relationship.getReverseRelationship();
            if (reverseRelationship != null
                    && "java.util.Map".equals(reverseRelationship.getCollectionType())) {


                if (mapArcProperties == null) {
                    mapArcProperties = new ArrayList<ArcProperty>(2);
                }

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                    relationshipName = NamedObjectFactory.createName(
                            ObjRelationship.class,
                            entity,
                            relationshipName);


                    ObjRelationship or = new ObjRelationship(relationshipName);
                    or.addDbRelationship(dr);
                    or.setSourceEntity(entity);
                    or.setTargetEntity(mappedTarget);
                    entity.addRelationship(or);
                    
                    fireRelationshipAdded(or);
                    changed = true;
                }

View Full Code Here

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