001 /******************************************************************************
002 * Copyright (C) MActor Developers. All rights reserved. *
003 * ---------------------------------------------------------------------------*
004 * This file is part of MActor. *
005 * *
006 * MActor is free software; you can redistribute it and/or modify *
007 * it under the terms of the GNU General Public License as published by *
008 * the Free Software Foundation; either version 2 of the License, or *
009 * (at your option) any later version. *
010 * *
011 * MActor is distributed in the hope that it will be useful, *
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
014 * GNU General Public License for more details. *
015 * *
016 * You should have received a copy of the GNU General Public License *
017 * along with MActor; if not, write to the Free Software *
018 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA *
019 ******************************************************************************/
020 package org.mactor.framework.commandexecutors.java;
021
022 import java.util.HashMap;
023 import java.util.List;
024 import java.util.Map;
025
026 import org.mactor.framework.MactorException;
027 import org.mactor.framework.ParseUtil;
028 import org.mactor.framework.TestContextImpl;
029 import org.mactor.framework.commandexecutors.ValueCommandExecutor;
030
031 public class SequenceValueCommandExecutor implements ValueCommandExecutor {
032 private static Map<String, Sequence> seqMap = new HashMap<String, Sequence>();
033 private String prefix = "";
034 private String name;
035 private static Object lock = new Object();
036 public SequenceValueCommandExecutor(String command, List<String> params) {
037 this.name = command;
038 Integer start = null;
039 if (params != null && params.size() > 0)
040 start = ParseUtil.tryParseInt(params.get(0));
041 long n = 0;
042 if (start != null)
043 n = start.longValue();
044 else
045 n = System.currentTimeMillis();
046 synchronized (lock) {
047 if (!seqMap.containsKey(name)) {
048 seqMap.put(name, new Sequence(n));
049 }
050 }
051 }
052 public String extractValue(TestContextImpl context) throws MactorException {
053 Sequence seq = null;
054 synchronized (lock) {
055 seq = seqMap.get(name);
056 }
057 return prefix + seq.next();
058 }
059 private static class Sequence {
060 private long seq;
061 public Sequence(long start) {
062 this.seq = start;
063 }
064 public synchronized long next() {
065 return ++seq;
066 }
067 }
068 }