1 /*
   2  * Copyright (c) 1999, 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.bdi;
  36 
  37 import com.sun.jdi.*;
  38 
  39 public class AccessWatchpointSpec extends WatchpointSpec {
  40 
  41     AccessWatchpointSpec(EventRequestSpecList specs,
  42                          ReferenceTypeSpec refSpec, String fieldId) {
  43         super(specs, refSpec,  fieldId);
  44     }
  45 
  46     /**
  47      * The 'refType' is known to match.
  48      */
  49    @Override
  50     void resolve(ReferenceType refType) throws InvalidTypeException,
  51                                              NoSuchFieldException {
  52         if (!(refType instanceof ClassType)) {
  53             throw new InvalidTypeException();
  54         }
  55         Field field = refType.fieldByName(fieldId);
  56         if (field == null) {
  57             throw new NoSuchFieldException(fieldId);
  58         }
  59         setRequest(refType.virtualMachine().eventRequestManager()
  60                    .createAccessWatchpointRequest(field));
  61     }
  62 
  63    @Override
  64     public boolean equals(Object obj) {
  65         return (obj instanceof AccessWatchpointSpec) && super.equals(obj);
  66     }
  67 }