/*
* Copyright 2009 DuraSpace.
*
* 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.
*/
package org.mulgara.query.operation;
import java.net.URI;
import org.mulgara.connection.Connection.SessionOp;
import org.mulgara.query.QueryException;
import org.mulgara.server.Session;
/**
* Represents a command to drop a graph.
* @created Aug 10, 2007
* @author Paula Gearon
* @copyright © 2007 <a href="mailto:pgearon@users.sourceforge.net">Paula Gearon</a>
* @licence <a href="{@docRoot}/../../LICENCE.txt">Open Software License v3.0</a>
*/
public class DropGraph extends SessionCommand {
/** The URI for the graph. */
private final URI graphUri;
public DropGraph(URI graphUri) {
super(graphUri);
this.graphUri = graphUri;
}
/**
* Get the URI of the graph to drop.
* @return the URI of the graph to drop.
*/
public URI getGraphUri() {
return graphUri;
}
/* (non-Javadoc)
* @see org.mulgara.query.operation.SessionCommand#getExecutable()
*/
@Override
protected SessionOp<String,QueryException> getExecutable() {
return new SessionOp<String,QueryException>() {
public String fn(Session session) throws QueryException {
session.removeModel(graphUri);
return setResultMessage("Successfully dropped graph " + graphUri);
}
};
}
}