1 /*
2  * Copyright (c) 1998, 2011, Oracle and/or its affiliates. All rights reserved.
3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License version 2 only, as
7  * published by the Free Software Foundation.  Oracle designates this
8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
23  * questions.
24  */
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 import com.sun.jdi.ReferenceType;
38 import com.sun.jdi.request.*;
39 
40 class ExceptionSpec extends EventRequestSpec {
41     private boolean notifyCaught;
42     private boolean notifyUncaught;
43 
ExceptionSpec(ReferenceTypeSpec refSpec)44     private ExceptionSpec(ReferenceTypeSpec refSpec) {
45         this(refSpec, true, true);
46     }
47 
ExceptionSpec(ReferenceTypeSpec refSpec, boolean notifyCaught, boolean notifyUncaught)48     ExceptionSpec(ReferenceTypeSpec refSpec,
49                   boolean notifyCaught,
50                   boolean notifyUncaught) {
51         super(refSpec);
52         this.notifyCaught = notifyCaught;
53         this.notifyUncaught = notifyUncaught;
54     }
55 
56     /**
57      * The 'refType' is known to match, return the EventRequest.
58      */
59     @Override
resolveEventRequest(ReferenceType refType)60     EventRequest resolveEventRequest(ReferenceType refType) {
61         EventRequestManager em = refType.virtualMachine().eventRequestManager();
62         ExceptionRequest excReq = em.createExceptionRequest(refType,
63                                                             notifyCaught,
64                                                             notifyUncaught);
65         excReq.enable();
66         return excReq;
67     }
68 
notifyCaught()69     public boolean notifyCaught() {
70         return notifyCaught;
71     }
72 
notifyUncaught()73     public boolean notifyUncaught() {
74         return notifyUncaught;
75     }
76 
77     @Override
hashCode()78     public int hashCode() {
79         //Reference: Effective Java[tm] (Bloch, 2001), Item 8
80         int result = 17;
81         result = (37 * result) + (notifyCaught() ? 0: 1);
82         result = (37 * result) + (notifyUncaught() ? 0: 1);
83         result = (37 * result) + refSpec.hashCode();
84         return result;
85     }
86 
87     @Override
equals(Object obj)88     public boolean equals(Object obj) {
89         if (obj instanceof ExceptionSpec) {
90             ExceptionSpec es = (ExceptionSpec)obj;
91 
92             if (refSpec.equals(es.refSpec) &&
93                 (this.notifyCaught() == es.notifyCaught()) &&
94                 (this.notifyUncaught() == es.notifyUncaught())) {
95                 return true;
96             }
97         }
98         return false;
99     }
100 
101     @Override
toString()102     public String toString() {
103         String s;
104         if (notifyCaught && !notifyUncaught) {
105             s = MessageOutput.format("exceptionSpec caught",
106                                      refSpec.toString());
107         } else if (notifyUncaught && !notifyCaught) {
108             s = MessageOutput.format("exceptionSpec uncaught",
109                                      refSpec.toString());
110         } else {
111             s = MessageOutput.format("exceptionSpec all",
112                                      refSpec.toString());
113         }
114         return s;
115     }
116 }
117