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Java > Open Source Codes > org > apache > cayenne > graph > ArcDeleteOperation


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19
20 package org.apache.cayenne.graph;
21
22 /**
23  * @since 1.2
24  * @author Andrus Adamchik
25  */
26 public class ArcDeleteOperation extends NodeDiff {
27
28     protected Object JavaDoc targetNodeId;
29     protected Object JavaDoc arcId;
30
31     public ArcDeleteOperation(Object JavaDoc nodeId, Object JavaDoc targetNodeId, Object JavaDoc arcId) {
32         super(nodeId);
33         this.targetNodeId = targetNodeId;
34         this.arcId = arcId;
35     }
36
37     public ArcDeleteOperation(Object JavaDoc nodeId, Object JavaDoc targetNodeId, Object JavaDoc arcId, int diffId) {
38         super(nodeId, diffId);
39         this.targetNodeId = targetNodeId;
40         this.arcId = arcId;
41     }
42
43     public void apply(GraphChangeHandler tracker) {
44         tracker.arcDeleted(nodeId, targetNodeId, arcId);
45     }
46
47     public void undo(GraphChangeHandler tracker) {
48         tracker.arcCreated(nodeId, targetNodeId, arcId);
49     }
50
51     public Object JavaDoc getArcId() {
52         return arcId;
53     }
54
55     public Object JavaDoc getTargetNodeId() {
56         return targetNodeId;
57     }
58 }
59
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