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* 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
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* KIND, either express or implied. See the License for the
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package org.apache.cayenne.modeler.action;
import java.awt.event.ActionEvent;
import org.apache.cayenne.map.DbEntity;
import org.apache.cayenne.map.DbRelationship;
import org.apache.cayenne.map.ObjEntity;
import org.apache.cayenne.map.ObjRelationship;
import org.apache.cayenne.map.Relationship;
import org.apache.cayenne.map.event.MapEvent;
import org.apache.cayenne.map.event.RelationshipEvent;
import org.apache.cayenne.modeler.Application;
import org.apache.cayenne.modeler.ProjectController;
import org.apache.cayenne.modeler.util.ProjectUtil;
import org.apache.cayenne.project.ProjectPath;
/**
* Removes currently selected relationship from either the DbEntity or ObjEntity.
*
* @author Garry Watkins
*/
public class RemoveRelationshipAction extends RemoveAction {
private final static String ACTION_NAME = "Remove Relationship";
public static String getActionName() {
return ACTION_NAME;
}
public RemoveRelationshipAction(Application application) {
super(ACTION_NAME, application);
}
/**
* Returns <code>true</code> if last object in the path contains a removable
* relationship.
*/
public boolean enableForPath(ProjectPath path) {
if (path == null) {
return false;
}
return path.getObject() instanceof Relationship;
}
public void performAction(ActionEvent e) {
if (getProjectController().getCurrentObjRelationship() != null) {
removeObjRelationship();
}
else if (getProjectController().getCurrentDbRelationship() != null) {
removeDbRelationship();
}
}
protected void removeObjRelationship() {
ProjectController mediator = getProjectController();
ObjEntity entity = mediator.getCurrentObjEntity();
ObjRelationship rel = mediator.getCurrentObjRelationship();
entity.removeRelationship(rel.getName());
RelationshipEvent e = new RelationshipEvent(
Application.getFrame(),
rel,
entity,
MapEvent.REMOVE);
mediator.fireObjRelationshipEvent(e);
}
protected void removeDbRelationship() {
ProjectController mediator = getProjectController();
DbEntity entity = mediator.getCurrentDbEntity();
DbRelationship rel = mediator.getCurrentDbRelationship();
entity.removeRelationship(rel.getName());
ProjectUtil.cleanObjMappings(mediator.getCurrentDataMap());
RelationshipEvent e = new RelationshipEvent(
Application.getFrame(),
rel,
entity,
MapEvent.REMOVE);
mediator.fireDbRelationshipEvent(e);
}
}