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 *  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
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 *  KIND, either express or implied.  See the License for the
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package org.apache.cayenne.graph;

/**
 * A GraphDiff representing a change in node ID.
 * 
 * @since 1.2
 */
public class NodeIdChangeOperation extends NodeDiff {

    protected Object newNodeId;

    public NodeIdChangeOperation(Object nodeId, Object newNodeId) {
        super(nodeId);

        this.newNodeId = newNodeId;
    }

    public NodeIdChangeOperation(Object nodeId, Object newNodeId, int diffId) {
        super(nodeId, diffId);
        this.newNodeId = newNodeId;
    }

    @Override
    public void apply(GraphChangeHandler tracker) {
        tracker.nodeIdChanged(nodeId, newNodeId);
    }

    @Override
    public void undo(GraphChangeHandler tracker) {
        tracker.nodeIdChanged(newNodeId, nodeId);
    }
}
