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Cayenne Object Persistence Framework

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 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
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package org.apache.cayenne.graph;

/**
 * @since 1.2
 * @author Andrus Adamchik
 */
public class ArcDeleteOperation extends NodeDiff {

    protected Object targetNodeId;
    protected Object arcId;

    public ArcDeleteOperation(Object nodeId, Object targetNodeId, Object arcId) {
        super(nodeId);
        this.targetNodeId = targetNodeId;
        this.arcId = arcId;
    }

    public ArcDeleteOperation(Object nodeId, Object targetNodeId, Object arcId, int diffId) {
        super(nodeId, diffId);
        this.targetNodeId = targetNodeId;
        this.arcId = arcId;
    }

    public void apply(GraphChangeHandler tracker) {
        tracker.arcDeleted(nodeId, targetNodeId, arcId);
    }

    public void undo(GraphChangeHandler tracker) {
        tracker.arcCreated(nodeId, targetNodeId, arcId);
    }

    public Object getArcId() {
        return arcId;
    }

    public Object getTargetNodeId() {
        return targetNodeId;
    }
}