STATUS.html - commons-scxml - Git at Google

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 <html>
 <head>
 <title>Status File for Apache Commons "SCXML" Component</title>
 </head>
 <body bgcolor="white">


 <div align="center">
 <h1>The Apache Commons <em>SCXML</em> Component</h1>
 $Id$<br />
 <a href="#Introduction">[Introduction]</a>
 <a href="#Dependencies">[Dependencies]</a>
 <a href="#Release Info">[Release Info]</a>
 <a href="#Committers">[Committers]</a>
 <a href="#Unsupported">[Unsupported Items]</a>
 <a href="#ActionItems">[Action Items]</a>
 <br /><br />
 </div>


 <a name="Introduction"></a>
 <h3>1.  INTRODUCTION</h3>

 <p>The World Wide Web Consortium (W3C) Voice Browser Working Group
 recently announced the publication of the first
 <a href="http://www.w3.org/TR/2005/WD-scxml-20050705/">Working Draft of
 State Chart XML</a> (SCXML). SCXML provides a generic state-machine
 based execution environment based on CCXML and Harel State Tables.
 <em>Commons SCXML</em> is a state chart engine, using the SCXML semantics.
 </p>


 <a name="Dependencies"></a>
 <h3>2.  DEPENDENCIES</h3>

 <p>The <em>SCXML</em> component is dependent upon the following external
 components for development and use:</p>
 <ul>
 <li>Apache Jakarta
 <a href="http://commons.apache.org/digester/">Commons
 Digester</a></li>
 <li>Apache Jakarta
 <a href="http://commons.apache.org/logging/">Commons
 Logging</a></li>
 <li><a href="http://java.sun.com/j2se">Java Development Kit</a>
 (Version 1.4 or later)</li>
 </ul>

 <p>JUnit is used as the testing framework</p>
 <ul>
 <li><a href="http://www.junit.org">JUnit Testing Framework</a>
 (Version 3.7 or later) - for unit tests only, not required
 for deployment</li>
 </ul>

 <p>Expression evaluation in SCXML documents is environment specific,
 the expression evaluator and context of evaluation is envisioned to be
 &quot;pluggable&quot;. The existing code provides an example for the
 servlet/JSP environment which needs: </p>
 <ul>
 <li>Apache Jakarta
 <a href="http://commons.apache.org/el/">Commons EL</a></li>
 <li><a href="http://java.sun.com/products/servlet/">Servlet 2.4</a></li>
 <li><a href="http://java.sun.com/products/jsp/">JSP 2.0</a></li>
 </ul>
 </p>

 <a name="Release Info"></a>
 <h3>3.  RELEASE INFO</h3>

 <p>Current Release: SCXML is yet to be released.</p>

 <p>Planned Next Release:  See the
 <a href="#ActionItems">Action Items</a> list for tasks that need to be
 completed prior to this release.</p>


 <a name="Committers"></a>
 <h3>4.  COMMITTERS</h3>

 <p>The following individuals are the primary developers and maintainers of this
 component.  Developers who plan to use <em>SCXML</em> in their own
 projects are encouraged to collaborate on the future development of this
 component to ensure that it continues to meet a variety of needs.</p>
 <ul>
   <li><a href="mailto:rahul AT apache.org">Rahul Akolkar</a></li>
   <li><a href="mailto:martinc AT apache.org">Martin Cooper</a></li>
   <li>Fancy volunteering?  We need you!</li>
 </ul>


 <a name="Unsupported"></a>
 <h3>5.  UNSUPPORTED ITEMS</h3>

 <p>The SCXML engine implementation is under development. The major items that are
 yet unimplemented are (Section numbers and Working Draft details in brackets):</p>

 <ul>
 <li>Multiple (simultaneous) targets for a single transition (Section 3.3.1 July 05 WD) -
 Similar results can be achieved in most cases by adding "action states" and a single
 target.</li>
 <li>SYNCH (Section 4.4 July 05 WD) - This has been removed from the latest WD.</li>
 <li>JOIN (Section 4.3 July 05 WD) - Wait for the next WD, since SYNCH is no longer
 listed.</li>
 </ul>

 <a name="ActionItems"></a>
 <h3>6.  ACTION ITEMS</h3>

 <p>These are the nice to haves before the next release. Help is welcome.</p>

 <ul>
 <li>More, better documentation.</li>
 <li>More usecases.</li>
 <li>Improvements to the <i>test</i> package, possibly providing <i>SCXMLUnit</i>
 test utilities.</li>
 </ul>

 </body>
 </html>
	<!--
	* Licensed to the Apache Software Foundation (ASF) under one or more
	* contributor license agreements. See the NOTICE file distributed with
	* this work for additional information regarding copyright ownership.
	* The ASF licenses this file to You under the Apache License, Version 2.0
	* (the "License"); you may not use this file except in compliance with
	* the License. You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	-->
	<html>
	<head>
	<title>Status File for Apache Commons "SCXML" Component</title>
	</head>
	<body bgcolor="white">


	<div align="center">
	<h1>The Apache Commons <em>SCXML</em> Component</h1>
	$Id$<br />
	<a href="#Introduction">[Introduction]</a>
	<a href="#Dependencies">[Dependencies]</a>
	<a href="#Release Info">[Release Info]</a>
	<a href="#Committers">[Committers]</a>
	<a href="#Unsupported">[Unsupported Items]</a>
	<a href="#ActionItems">[Action Items]</a>
	<br /><br />
	</div>


	<a name="Introduction"></a>
	<h3>1. INTRODUCTION</h3>

	<p>The World Wide Web Consortium (W3C) Voice Browser Working Group
	recently announced the publication of the first
	<a href="http://www.w3.org/TR/2005/WD-scxml-20050705/">Working Draft of
	State Chart XML</a> (SCXML). SCXML provides a generic state-machine
	based execution environment based on CCXML and Harel State Tables.
	<em>Commons SCXML</em> is a state chart engine, using the SCXML semantics.
	</p>


	<a name="Dependencies"></a>
	<h3>2. DEPENDENCIES</h3>

	<p>The <em>SCXML</em> component is dependent upon the following external
	components for development and use:</p>
	<ul>
	<li>Apache Jakarta
	<a href="http://commons.apache.org/digester/">Commons
	Digester</a></li>
	<li>Apache Jakarta
	<a href="http://commons.apache.org/logging/">Commons
	Logging</a></li>
	<li><a href="http://java.sun.com/j2se">Java Development Kit</a>
	(Version 1.4 or later)</li>
	</ul>

	<p>JUnit is used as the testing framework</p>
	<ul>
	<li><a href="http://www.junit.org">JUnit Testing Framework</a>
	(Version 3.7 or later) - for unit tests only, not required
	for deployment</li>
	</ul>

	<p>Expression evaluation in SCXML documents is environment specific,
	the expression evaluator and context of evaluation is envisioned to be
	"pluggable". The existing code provides an example for the
	servlet/JSP environment which needs: </p>
	<ul>
	<li>Apache Jakarta
	<a href="http://commons.apache.org/el/">Commons EL</a></li>
	<li><a href="http://java.sun.com/products/servlet/">Servlet 2.4</a></li>
	<li><a href="http://java.sun.com/products/jsp/">JSP 2.0</a></li>
	</ul>
	</p>

	<a name="Release Info"></a>
	<h3>3. RELEASE INFO</h3>

	<p>Current Release: SCXML is yet to be released.</p>

	<p>Planned Next Release: See the
	<a href="#ActionItems">Action Items</a> list for tasks that need to be
	completed prior to this release.</p>


	<a name="Committers"></a>
	<h3>4. COMMITTERS</h3>

	<p>The following individuals are the primary developers and maintainers of this
	component. Developers who plan to use <em>SCXML</em> in their own
	projects are encouraged to collaborate on the future development of this
	component to ensure that it continues to meet a variety of needs.</p>
	<ul>
	<li><a href="mailto:rahul AT apache.org">Rahul Akolkar</a></li>
	<li><a href="mailto:martinc AT apache.org">Martin Cooper</a></li>
	<li>Fancy volunteering? We need you!</li>
	</ul>


	<a name="Unsupported"></a>
	<h3>5. UNSUPPORTED ITEMS</h3>

	<p>The SCXML engine implementation is under development. The major items that are
	yet unimplemented are (Section numbers and Working Draft details in brackets):</p>

	<ul>
	<li>Multiple (simultaneous) targets for a single transition (Section 3.3.1 July 05 WD) -
	Similar results can be achieved in most cases by adding "action states" and a single
	target.</li>
	<li>SYNCH (Section 4.4 July 05 WD) - This has been removed from the latest WD.</li>
	<li>JOIN (Section 4.3 July 05 WD) - Wait for the next WD, since SYNCH is no longer
	listed.</li>
	</ul>

	<a name="ActionItems"></a>
	<h3>6. ACTION ITEMS</h3>

	<p>These are the nice to haves before the next release. Help is welcome.</p>

	<ul>
	<li>More, better documentation.</li>
	<li>More usecases.</li>
	<li>Improvements to the <i>test</i> package, possibly providing <i>SCXMLUnit</i>
	test utilities.</li>
	</ul>

	</body>
	</html>