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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;

Author(s):
Andrei Adamchik
 
 public class CreateRelationshipAction extends CayenneAction {
 
 	public static String getActionName() {
 		return "Create Relationship";
 	}

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

    

See also:
org.apache.cayenne.modeler.util.CayenneAction.performAction(ActionEvent)
 
     public void performAction(ActionEvent e) {
         ObjEntity objEnt = getProjectController().getCurrentObjEntity();
         if (objEnt != null) {
             createObjRelationship(objEnt);
         } else {
             DbEntity dbEnt = getProjectController().getCurrentDbEntity();
             if (dbEnt != null) {
                 createDbRelationship(dbEnt);
             }
         }
     }
 
     public void createObjRelationship(ObjEntity objEnt) {
         ProjectController mediator = getProjectController();
 
         ObjRelationship rel =
             (ObjRelationship) NamedObjectFactory.createObject(
                 ObjRelationship.class,
                 objEnt);
         rel.setSourceEntity(objEnt);
         objEnt.addRelationship(rel);
 
         mediator.fireObjRelationshipEvent(
             new RelationshipEvent(thisrelobjEnt, MapEvent.ADD));
         
         RelationshipDisplayEvent rde = new RelationshipDisplayEvent(
                 this,
                 rel,
                 objEnt,
                 mediator.getCurrentDataMap(),
                 mediator.getCurrentDataDomain());
         
         mediator.fireObjRelationshipDisplayEvent(rde);
     }
 
     public void createDbRelationship(DbEntity dbEnt) {
         ProjectController mediator = getProjectController();
 
         DbRelationship rel =
            (DbRelationship) NamedObjectFactory.createObject(DbRelationship.classdbEnt);
        rel.setSourceEntity(dbEnt);
        dbEnt.addRelationship(rel);
        mediator.fireDbRelationshipEvent(
            new RelationshipEvent(thisreldbEnt, MapEvent.ADD));
                this,
                rel,
                dbEnt,
                mediator.getCurrentDataMap(),
                mediator.getCurrentDataDomain());
        
        mediator.fireDbRelationshipDisplayEvent(rde);
    }

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