001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
028: * Microsystems, Inc. All Rights Reserved.
029: *
030: * If you wish your version of this file to be governed by only the CDDL
031: * or only the GPL Version 2, indicate your decision by adding
032: * "[Contributor] elects to include this software in this distribution
033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
034: * single choice of license, a recipient has the option to distribute
035: * your version of this file under either the CDDL, the GPL Version 2 or
036: * to extend the choice of license to its licensees as provided above.
037: * However, if you add GPL Version 2 code and therefore, elected the GPL
038: * Version 2 license, then the option applies only if the new code is
039: * made subject to such option by the copyright holder.
040: */
041:
042: package threaddemo.model;
043:
044: import java.io.File;
045: import java.io.IOException;
046: import java.io.InputStream;
047: import java.io.OutputStream;
048: import java.util.List;
049: import threaddemo.locking.RWLock;
050: import threaddemo.locking.Locks;
051:
052: /**
053: * A phadhail in which all model methods are locked with a simple monitor.
054: * In this variant, the impl acquires locks automatically, though another
055: * style would be to require the client to do this.
056: * @author Jesse Glick
057: */
058: final class MonitoredPhadhail extends AbstractPhadhail {
059:
060: private static final class LOCK {
061: }
062:
063: private static final Object LOCK = new LOCK();
064: private static final RWLock MLOCK = Locks.monitor(LOCK);
065:
066: private static final AbstractPhadhail.Factory FACTORY = new AbstractPhadhail.Factory() {
067: public AbstractPhadhail create(File f) {
068: return new MonitoredPhadhail(f);
069: }
070: };
071:
072: public static Phadhail create(File f) {
073: return forFile(f, FACTORY);
074: }
075:
076: private MonitoredPhadhail(File f) {
077: super (f);
078: }
079:
080: protected Factory factory() {
081: return FACTORY;
082: }
083:
084: public List<Phadhail> getChildren() {
085: synchronized (LOCK) {
086: return super .getChildren();
087: }
088: }
089:
090: public String getName() {
091: synchronized (LOCK) {
092: return super .getName();
093: }
094: }
095:
096: public String getPath() {
097: synchronized (LOCK) {
098: return super .getPath();
099: }
100: }
101:
102: public boolean hasChildren() {
103: synchronized (LOCK) {
104: return super .hasChildren();
105: }
106: }
107:
108: public void rename(String nue) throws IOException {
109: synchronized (LOCK) {
110: super .rename(nue);
111: }
112: }
113:
114: public Phadhail createContainerPhadhail(String name)
115: throws IOException {
116: synchronized (LOCK) {
117: return super .createContainerPhadhail(name);
118: }
119: }
120:
121: public Phadhail createLeafPhadhail(String name) throws IOException {
122: synchronized (LOCK) {
123: return super .createLeafPhadhail(name);
124: }
125: }
126:
127: public void delete() throws IOException {
128: synchronized (LOCK) {
129: super .delete();
130: }
131: }
132:
133: public InputStream getInputStream() throws IOException {
134: synchronized (LOCK) {
135: return super .getInputStream();
136: }
137: }
138:
139: public OutputStream getOutputStream() throws IOException {
140: synchronized (LOCK) {
141: return super .getOutputStream();
142: }
143: }
144:
145: public RWLock lock() {
146: return MLOCK;
147: }
148:
149: }
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