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25 
26 /*
27  * This source code is provided to illustrate the usage of a given feature
28  * or technique and has been deliberately simplified. Additional steps
29  * required for a production-quality application, such as security checks,
30  * input validation and proper error handling, might not be present in
31  * this sample code.
32  */
33 
34 
35 package com.sun.tools.example.debug.tty;
36 
37 abstract class WatchpointSpec extends EventRequestSpec {
38     final String fieldId;
39 
WatchpointSpec(ReferenceTypeSpec refSpec, String fieldId)40     WatchpointSpec(ReferenceTypeSpec refSpec, String fieldId)
41                                        throws MalformedMemberNameException {
42         super(refSpec);
43         this.fieldId = fieldId;
44         if (!isJavaIdentifier(fieldId)) {
45             throw new MalformedMemberNameException(fieldId);
46         }
47     }
48 
49     @Override
hashCode()50     public int hashCode() {
51         return refSpec.hashCode() + fieldId.hashCode() +
52             getClass().hashCode();
53     }
54 
55     @Override
equals(Object obj)56     public boolean equals(Object obj) {
57         if (obj instanceof WatchpointSpec) {
58             WatchpointSpec watchpoint = (WatchpointSpec)obj;
59 
60             return fieldId.equals(watchpoint.fieldId) &&
61                    refSpec.equals(watchpoint.refSpec) &&
62                    getClass().equals(watchpoint.getClass());
63         } else {
64             return false;
65         }
66     }
67 
68     @Override
errorMessageFor(Exception e)69     String errorMessageFor(Exception e) {
70         if (e instanceof NoSuchFieldException) {
71             return (MessageOutput.format("No field in",
72                                          new Object [] {fieldId, refSpec.toString()}));
73         } else {
74             return super.errorMessageFor(e);
75         }
76     }
77 }
78