/*
* 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 com.hp.hpl.jena.tdb.migrate;
import com.hp.hpl.jena.graph.Node ;
import com.hp.hpl.jena.sparql.algebra.Op ;
import com.hp.hpl.jena.sparql.algebra.TransformCopy ;
import com.hp.hpl.jena.sparql.algebra.op.OpGraph ;
import com.hp.hpl.jena.sparql.algebra.op.OpQuadPattern ;
public class TransformGraphRename extends TransformCopy
{
private Node oldGraphName ;
private Node newGraphName ;
public TransformGraphRename(Node oldGraphName, Node newGraphName)
{
this.oldGraphName = oldGraphName ;
this.newGraphName = newGraphName ;
}
// Does not affect variables.
@Override
public Op transform(OpGraph opGraph, Op x)
{
if ( opGraph.getNode().equals(oldGraphName) )
opGraph = new OpGraph(newGraphName, x) ;
return super.transform(opGraph, x) ;
}
@Override
public Op transform(OpQuadPattern opQuadPattern)
{
if ( opQuadPattern.getGraphNode().equals(oldGraphName) )
opQuadPattern = new OpQuadPattern(newGraphName, opQuadPattern.getBasicPattern()) ;
return super.transform(opQuadPattern) ;
}
}