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Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. /
 
 
 package org.apache.cayenne.modeler.action;
 
 
 import  org.apache.cayenne.map.DbEntity;
 import  org.apache.cayenne.map.DbRelationship;
 import  org.apache.cayenne.map.Entity;
 import  org.apache.cayenne.map.ObjEntity;
 import  org.apache.cayenne.map.ObjRelationship;
 import  org.apache.cayenne.map.event.MapEvent;
 import  org.apache.cayenne.map.event.RelationshipEvent;
 import  org.apache.cayenne.project.NamedObjectFactory;
 import  org.apache.cayenne.project.ProjectPath;
 import  org.apache.cayenne.util.DeleteRuleUpdater;

 
 public class CreateRelationshipAction extends CayenneAction {
 
     
 
     public static String getActionName() {
         return "Create Relationship";
     }

    
Constructor for CreateRelationshipAction.
 
     public CreateRelationshipAction(Application application) {
         super(getActionName(), application);
     }
 
     @Override
     public String getIconName() {
         return "icon-relationship.gif";
     }

    

See also:
org.apache.cayenne.modeler.util.CayenneAction.performAction(ActionEvent)
 
     @Override
     public void performAction(ActionEvent e) {
         ObjEntity objEnt = getProjectController().getCurrentObjEntity();
         if (objEnt != null) {
 
             ObjRelationship rel = (ObjRelationship) NamedObjectFactory.createObject(
                     ObjRelationship.class,
                     objEnt);
 
             createObjRelationship(objEntrel);
 
             .getUndoManager().addEdit(
                     new CreateRelationshipUndoableEdit(objEntnew ObjRelationship[] {
                         rel
                     }));
         }
         else {
             DbEntity dbEnt = getProjectController().getCurrentDbEntity();
             if (dbEnt != null) {
 
                 DbRelationship rel = (DbRelationship) NamedObjectFactory.createObject(
                         DbRelationship.class,
                         dbEnt);
 
                 createDbRelationship(dbEntrel);
 
                 .getUndoManager().addEdit(
                         new CreateRelationshipUndoableEdit(dbEntnew DbRelationship[] {
                             rel
                         }));
             }
         }
     }
 
     public void createObjRelationship(ObjEntity objEntity, ObjRelationship rel) {
        ProjectController mediator = getProjectController();
        rel.setSourceEntity(objEntity);
        DeleteRuleUpdater.updateObjRelationship(rel);
        objEntity.addRelationship(rel);
        fireObjRelationshipEvent(thismediatorobjEntityrel);
    }

    
Fires events when a obj rel was added
    static void fireObjRelationshipEvent(
            Object src,
            ProjectController mediator,
            ObjEntity objEntity,
            ObjRelationship rel) {
        mediator.fireObjRelationshipEvent(new RelationshipEvent(
                src,
                rel,
                objEntity,
                MapEvent.ADD));
                src,
                rel,
                objEntity,
                mediator.getCurrentDataMap(),
                mediator.getCurrentDataDomain());
        mediator.fireObjRelationshipDisplayEvent(rde);
    }
    public void createDbRelationship(DbEntity dbEntity, DbRelationship rel) {
        ProjectController mediator = getProjectController();
        rel.setSourceEntity(dbEntity);
        dbEntity.addRelationship(rel);
        fireDbRelationshipEvent(thismediatordbEntityrel);
    }

    
Fires events when a db rel was added
    static void fireDbRelationshipEvent(
            Object src,
            ProjectController mediator,
            DbEntity dbEntity,
            DbRelationship rel) {
        mediator.fireDbRelationshipEvent(new RelationshipEvent(
                src,
                rel,
                dbEntity,
                MapEvent.ADD));
                src,
                rel,
                dbEntity,
                mediator.getCurrentDataMap(),
                mediator.getCurrentDataDomain());
        mediator.fireDbRelationshipDisplayEvent(rde);
    }

    
Returns true if path contains an Entity object.
    @Override
    public boolean enableForPath(ProjectPath path) {
        if (path == null) {
            return false;
        }
        return path.firstInstanceOf(Entity.class) != null;
    }
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