/*
 * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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/*
 * This source code is provided to illustrate the usage of a given feature
 * or technique and has been deliberately simplified. Additional steps
 * required for a production-quality application, such as security checks,
 * input validation and proper error handling, might not be present in
 * this sample code.
 */


package com.sun.tools.example.debug.bdi;

import com.sun.jdi.*;

public class ModificationWatchpointSpec extends WatchpointSpec {

    ModificationWatchpointSpec(EventRequestSpecList specs,
                         ReferenceTypeSpec refSpec, String fieldId) {
        super(specs, refSpec,  fieldId);
    }

    /**
     * The 'refType' is known to match.
     */
    @Override
    void resolve(ReferenceType refType) throws InvalidTypeException,
                                             NoSuchFieldException {
        if (!(refType instanceof ClassType)) {
            throw new InvalidTypeException();
        }
        Field field = refType.fieldByName(fieldId);
        if (field == null) {
            throw new NoSuchFieldException(fieldId);
        }
        setRequest(refType.virtualMachine().eventRequestManager()
                   .createModificationWatchpointRequest(field));
    }

    @Override
    public boolean equals(Object obj) {
        return (obj instanceof ModificationWatchpointSpec) &&
            super.equals(obj);
    }
}
