/*
* 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.jena.sparql.syntax.syntaxtransform ;
import java.util.Map ;
import org.apache.jena.graph.Node ;
import org.apache.jena.sparql.core.Var ;
import org.apache.jena.sparql.graph.NodeTransform ;
/** A {@link NodeTransform} substituting variables for {@link Node}s. */
public class NodeTransformSubst implements NodeTransform {
private final Map<Var, ? extends Node> map ;
public NodeTransformSubst(Map<Var, ? extends Node> map) {
this.map = map ;
}
@Override
public Node apply(Node node) {
Node n = map.get(node) ;
if ( n == null )
return node ;
return n ;
}
}