001// Copyright 2009 The Apache Software Foundation
002//
003// Licensed under the Apache License, Version 2.0 (the "License");
004// you may not use this file except in compliance with the License.
005// You may obtain a copy of the License at
006//
007//     http://www.apache.org/licenses/LICENSE-2.0
008//
009// Unless required by applicable law or agreed to in writing, software
010// distributed under the License is distributed on an "AS IS" BASIS,
011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012// See the License for the specific language governing permissions and
013// limitations under the License.
014
015package org.apache.tapestry5.ioc.internal.util;
016
017import java.util.concurrent.TimeUnit;
018import java.util.concurrent.locks.Condition;
019import java.util.concurrent.locks.Lock;
020
021/**
022 * Acts like a Lock but all operations are no-ops.
023 */
024public class DummyLock implements Lock
025{
026    public void lock()
027    {
028    }
029
030    public void lockInterruptibly() throws InterruptedException
031    {
032    }
033
034    /**
035     * Returns null.
036     */
037    public Condition newCondition()
038    {
039        return null;
040    }
041
042    /** @return true */
043    public boolean tryLock()
044    {
045        return true;
046    }
047
048    /** @return true */
049    public boolean tryLock(long time, TimeUnit unit) throws InterruptedException
050    {
051        return true;
052    }
053
054    public void unlock()
055    {
056    }
057
058}