AssociationEditPolicy.java

/*
 * DBeaver - Universal Database Manager
 * Copyright (C) 2010-2017 Serge Rider (serge@jkiss.org)
 *
 * Licensed 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.
 */
/*
 * Created on Jul 15, 2004
 */
package org.jkiss.dbeaver.ext.erd.policy;

import org.eclipse.gef.commands.Command;
import org.eclipse.gef.editpolicies.ComponentEditPolicy;
import org.eclipse.gef.requests.GroupRequest;
import org.jkiss.dbeaver.ext.erd.command.AssociationDeleteCommand;
import org.jkiss.dbeaver.ext.erd.model.ERDAssociation;
import org.jkiss.dbeaver.ext.erd.model.ERDEntity;

/**
 * EditPolicy to handle deletion of relationships
 * @author Serge Rider
 */
public class AssociationEditPolicy extends ComponentEditPolicy
{

	@Override
    protected Command createDeleteCommand(GroupRequest request)
	{
		ERDAssociation relationship = (ERDAssociation) getHost().getModel();
		ERDEntity primaryKeyTarget = relationship.getPrimaryKeyEntity();
		ERDEntity foreignKeySource = relationship.getForeignKeyEntity();
		AssociationDeleteCommand deleteCmd = new AssociationDeleteCommand(foreignKeySource, primaryKeyTarget, relationship);
		return deleteCmd;
	}
	
}