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Java > Open Source Codes > org > apache > cayenne > map > CallbackDescriptor


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19 package org.apache.cayenne.map;
20
21 import java.io.Serializable JavaDoc;
22 import java.util.Arrays JavaDoc;
23 import java.util.Collection JavaDoc;
24 import java.util.Collections JavaDoc;
25 import java.util.HashSet JavaDoc;
26 import java.util.Set JavaDoc;
27
28 /**
29  * A mapping descriptor of a single callback event.
30  *
31  * @since 3.0
32  * @author Andrus Adamchik
33  */
34 public class CallbackDescriptor implements Serializable JavaDoc {
35     
36    
37
38     protected int callbackType;
39     protected Set JavaDoc callbackMethods;
40
41     public CallbackDescriptor(int callbackType) {
42         setCallbackType(callbackType);
43         this.callbackMethods = new HashSet JavaDoc(3);
44     }
45
46     /**
47      * Removes all callback methods.
48      */
49     public void clear() {
50         callbackMethods.clear();
51     }
52
53     /**
54      * Returns all callback methods for this callback event.
55      */
56     public Collection JavaDoc getCallbackMethods() {
57         return Collections.unmodifiableCollection(callbackMethods);
58     }
59
60     public void addCallbackMethod(String JavaDoc methodName) {
61         callbackMethods.add(methodName);
62     }
63
64     public void removeCallbackMethod(String JavaDoc methodName) {
65         callbackMethods.remove(methodName);
66     }
67
68     public int getCallbackType() {
69         return callbackType;
70     }
71
72     void setCallbackType(int callbackType) {
73         if (Arrays.binarySearch(CallbackMap.CALLBACKS, callbackType) != callbackType) {
74             throw new IllegalArgumentException JavaDoc("Invalid callback: " + callbackType);
75         }
76
77         this.callbackType = callbackType;
78     }
79 }
80
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