001 /*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.commons.scxml.test;
018
019 import org.apache.commons.scxml.Evaluator;
020 import org.apache.commons.scxml.env.jsp.ELEvaluator;
021
022 /**
023 * Standalone SCXML interpreter, useful for command-line testing and
024 * debugging, where expressions are JSP 2.0 EL expressions.
025 *
026 * <p>USAGE:</p>
027 * <p><code>java org.apache.commons.scxml.test.StandaloneElExpressions
028 * url</code></p>
029 * <p>or</p>
030 * <p><code>java org.apache.commons.scxml.test.StandaloneElExpressions
031 * filename</code>
032 * </p>
033 *
034 * <p>RUNNING:</p>
035 * <ul>
036 * <li>Enter a space-separated list of "events"</li>
037 * <li>To quit, enter "quit"</li>
038 * <li>To populate a variable in the current context,
039 * type "name=value"</li>
040 * <li>To reset state machine, enter "reset"</li>
041 * </ul>
042 *
043 */
044 public final class StandaloneElExpressions {
045
046 /**
047 * Launcher.
048 * @param args The arguments, one expected, the URI or filename of the
049 * SCXML document
050 */
051 public static void main(final String[] args) {
052 if (args.length < 1) {
053 System.out.println("USAGE: java "
054 + StandaloneElExpressions.class.getName()
055 + "<url|filename>");
056 System.exit(-1);
057 }
058 Evaluator evaluator = new ELEvaluator();
059 StandaloneUtils.execute(args[0], evaluator);
060 }
061
062 /**
063 * Discourage instantiation since this is a utility class.
064 */
065 private StandaloneElExpressions() {
066 super();
067 }
068
069 }
070