diff options
| author | coreyg <coreyg@13f79535-47bb-0310-9956-ffa450edef68> | 2014-11-21 09:30:19 +0000 |
|---|---|---|
| committer | coreyg <coreyg@13f79535-47bb-0310-9956-ffa450edef68> | 2014-11-21 09:30:19 +0000 |
| commit | 200a40b332420f94992eb39a6d0ea1cf1490ffc4 (patch) | |
| tree | 1c76ef1d254c7bfc91128a313d319bd60da9d01e /site/trunk/site-publish/tuscany-sca-web-application-integration-story.html | |
| parent | 85f53ab6ab4f664d63774c94b672a875c9e52b8a (diff) | |
Adding tuscany's website to their svn repo for svnpubsub
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1640879 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'site/trunk/site-publish/tuscany-sca-web-application-integration-story.html')
| -rw-r--r-- | site/trunk/site-publish/tuscany-sca-web-application-integration-story.html | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/site/trunk/site-publish/tuscany-sca-web-application-integration-story.html b/site/trunk/site-publish/tuscany-sca-web-application-integration-story.html new file mode 100644 index 0000000000..de5c7e5c44 --- /dev/null +++ b/site/trunk/site-publish/tuscany-sca-web-application-integration-story.html @@ -0,0 +1,230 @@ + +<!-- + + 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. +--> + + +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<HTML> + <HEAD> + <!-- generateKeywords macro --> + <META name="description" content="Apache Tuscany"> + <META name="keywords" content="apache, apache tuscany, tuscany, service, services, fabric, soa, service oriented architecture, sca, service component architecture, das, sdo, csa, ruby, opensource"> + <!-- generateKeywords macro end --> + + <LINK type="text/css" rel="stylesheet" href="http://tuscany.apache.org/stylesheets/default.css"> + <LINK rel="SHORTCUT ICON" href="https://cwiki.apache.org/confluence/display/TUSCANY/$images/favicon.ico"> + <TITLE>Apache Tuscany : Tuscany SCA Web Application Integration Story</TITLE> + <META http-equiv="Content-Type" content="text/html;charset=UTF-8"></HEAD> + + <BODY onload="init()"> + <!-- topNav macro --> + <TABLE valign="top" border="0" cellspacing="0" cellpadding="0" width="100%" background="http://tuscany.apache.org/images/TuscanyLogoNEW_Text_120px_bg.jpg"> + <TR> + <TD valing="top" align="left"> + <A href="https://cwiki.apache.org/confluence/pages/viewpage.action?spaceKey=TUSCANY&title=$siteroot"><IMG src="http://tuscany.apache.org/images/TuscanyLogoNEW_Text_120px_bg.jpg" height="91" width="25" border="0"></A> + </TD> + <TD> + <A href="http://tuscany.apache.org/"><IMG src="http://tuscany.apache.org/images/TuscanyLogo.jpg" border="0"></A> + </TD> + + <TD width="100%"> + + </TD> + + <!-- Adds the edit page link to the top banner--> + <TD valign="bottom"> + <DIV style="padding: 2px 10px; margin: 0px;"> + <A href="https://cwiki.apache.org/confluence/pages/editpage.action?pageId=53596"> + <IMG src="http://tuscany.apache.org/images/notep_16.gif" height="16" width="16" border="0" align="absmiddle" title="Edit Page"></A> + </DIV> + </TD> + + </TR> + </TABLE> + <!-- topNav macro end --> + + <!-- breadCrumbs macro --> + <TABLE border="0" cellpadding="2" cellspacing="0" width="100%"> + <TR class="topBar"> + <TD align="left" valign="middle" class="topBarDiv" nowrap="true" width="100%"> + <A href="home.html" title="Apache Tuscany">Apache Tuscany</A> > <A href="home.html" title="Home">Home</A> > <A href="sca-overview.html" title="SCA Overview">SCA Overview</A> > <A href="sca-java.html" title="SCA Java">SCA Java</A> > <A href="sca-java-work-in-progress.html" title="SCA Java Work-In-Progress">SCA Java Work-In-Progress</A> > <A href="" title="Tuscany SCA Web Application Integration Story">Tuscany SCA Web Application Integration Story</A> + </TD> + + <TD align="right" valign="middle" class="topBarDiv" align="left" nowrap="true"> + <A href="http://mail-archives.apache.org/mod_mbox/tuscany-user">User List</A> | <A href="http://mail-archives.apache.org/mod_mbox/tuscany-dev">Dev List</A> | <A href="http://issues.apache.org/jira/browse/Tuscany">Issue Tracker</A> + </TD> + </TR> + </TABLE> + <!-- breadCrumbs macro end --> + + + <TABLE border="0" cellpadding="0" width="100%" bgcolor="#FFFFFF"> + <TR> + <TD align="left" valign="top"> + + <!-- pageContent macro --> + <DIV id="PageContent"> + + <DIV class="pagecontent"> + <DIV class="wiki-content"> + <TABLE class="sectionMacro" border="0" cellpadding="5" cellspacing="0" width="100%"><TBODY><TR><TD class="confluenceTd" valign="top" width="15%"><P></P> +<DIV class="panel" style="background-color: #ECF4D1;border-color: #C3CDA1;border-style: solid;border-width: 1px;"><DIV class="panelHeader" style="border-bottom-width: 1px;border-bottom-style: solid;border-bottom-color: #C3CDA1;background-color: #C3CDA1;"><B>General</B></DIV><DIV class="panelContent" style="background-color: #ECF4D1;"> +<P><A href="home.html" title="Home">Home</A><BR> +<A href="http://www.apache.org/licenses/LICENSE-2.0.html" class="external-link" rel="nofollow">License </A><BR> +<A href="tuscany-downloads-documentations.html" title="Tuscany Downloads & Documentations">Downloads</A><BR> +<A href="tuscany-downloads-documentations.html" title="Tuscany Downloads & Documentations">Documentation</A><BR> +<A href="tuscany-books-and-articles.html" title="Tuscany Books and Articles">Books and Articles</A><BR> +<A href="tuscany-dashboard.html" title="Tuscany Dashboard">Dashboard</A><BR> +<A href="issue-tracking.html" title="Issue Tracking">Found a Bug?</A><BR> +<A href="http://www.apache.org/foundation/sponsorship.html" class="external-link" rel="nofollow">Sponsorship </A><BR> +<A href="http://www.apache.org/foundation/thanks.html" class="external-link" rel="nofollow">Thanks </A><BR> +<A href="privacy-policy.html" title="Privacy Policy">Privacy Policy</A></P> +</DIV></DIV> +<DIV class="panel" style="background-color: #ECF4D1;border-color: #b4b4b5;border-style: solid;border-width: 1px;"><DIV class="panelHeader" style="border-bottom-width: 1px;border-bottom-style: solid;border-bottom-color: #b4b4b5;background-color: #C3CDA1;"><B>Community</B></DIV><DIV class="panelContent" style="background-color: #ECF4D1;"> +<P><A href="getting-involved.html" title="Getting Involved">Get Involved</A><BR> +<A href="mailing-lists.html" title="Mailing Lists">Mailing Lists</A><BR> +<A href="committers.html" title="Committers">Committers</A><BR> +<A href="chinese-portal.html" title="Chinese Portal">Chinese Portal </A> <SPAN class="image-wrap" style=""><IMG src="community.data/chinese.jpg" style="border: 0px solid black"></SPAN><BR> +<A href="projects-using-tuscany.html" title="Projects Using Tuscany">Powered By</A></P> +</DIV></DIV> +<DIV class="panel" style="background-color: #ECF4D1;border-color: #b4b4b5;border-style: solid;border-width: 1px;"><DIV class="panelHeader" style="border-bottom-width: 1px;border-bottom-style: solid;border-bottom-color: #b4b4b5;background-color: #C3CDA1;"><B>Tuscany SCA</B></DIV><DIV class="panelContent" style="background-color: #ECF4D1;"> +<P><A href="sca-overview.html" title="SCA Overview">SCA Overview</A><BR> +<A href="sca-java.html" title="SCA Java">SCA Java</A><BR> +<A href="sca-native.html" title="SCA Native">SCA Native</A><BR> +<A href="php-sca.html" title="PHP SCA">SCA PHP</A></P> +</DIV></DIV> + + +<DIV class="panel" style="background-color: #ECF4D1;border-color: #b4b4b5;border-style: solid;border-width: 1px;"><DIV class="panelHeader" style="border-bottom-width: 1px;border-bottom-style: solid;border-bottom-color: #b4b4b5;background-color: #C3CDA1;"><B>Tuscany SDO</B></DIV><DIV class="panelContent" style="background-color: #ECF4D1;"> +<P><A href="sdo-overview.html" title="SDO Overview">SDO Overview</A><BR> +<A href="sdo-java.html" title="SDO Java">SDO Java</A><BR> +<A href="sdo-cpp.html" title="SDO CPP">SDO C++</A><BR> +<A href="sdo-php.html" title="SDO PHP">SDO PHP</A></P> +</DIV></DIV> +<DIV class="panel" style="background-color: #ECF4D1;border-color: #b4b4b5;border-style: solid;border-width: 1px;"><DIV class="panelHeader" style="border-bottom-width: 1px;border-bottom-style: solid;border-bottom-color: #b4b4b5;background-color: #C3CDA1;"><B>Tuscany DAS</B></DIV><DIV class="panelContent" style="background-color: #ECF4D1;"> +<P><A href="das-overview.html" title="DAS Overview">DAS Overview </A><BR> +<A href="das-java.html" title="DAS Java">DAS Java</A><BR> +<A href="das-c.html" title="DAS C++">DAS C++ </A></P> +</DIV></DIV></TD><TD class="confluenceTd" valign="top" width="85%"> + +<H2><A name="TuscanySCAWebApplicationIntegrationStory-WebApplicationIntegrationstorygoals"></A>Web Application Integration story goals</H2> + +<UL class="alternate" type="square"> + <LI>Simplify the web application as a client application story</LI> + <LI>Use a simple approach, familiar to all web application developers</LI> +</UL> + + +<H2><A name="TuscanySCAWebApplicationIntegrationStory-IntegratingusingServletContextLister"></A>Integrating using ServletContextLister</H2> + +<P>This approach register a context listener on the application web.xml that will bootstrap the runtime when the web-app is started, and closes the runtime when the web-app is shutdown.</P> + +<P>Necessary updates in web.xml</P> +<DIV class="code panel" style="border-width: 1px;"><DIV class="codeContent panelContent"> +<PRE class="code-java"> +<listener> + <listener-class>org.apache.tuscany.sca.webapp.TuscanyContextListener</listener-class> +</listener> +</PRE> +</DIV></DIV> + +<P>Then, once this integration part is defined, developers only need to get a reference to the SCADomain in their JSP and then get a reference to a service and start consuming it<BR> +Below, you can find the JSP code snippet to get a SCARuntime reference :</P> +<DIV class="code panel" style="border-width: 1px;"><DIV class="codeContent panelContent"> +<PRE class="code-java"> +SCADomain domain = (SCADomain) application.getAttribute(<SPAN class="code-quote">"org.apache.tuscany.sca.SCADomain"</SPAN>); +</PRE> +</DIV></DIV> + +<P>In order to use this approach, you will need to specify a sca-contribution.xml inside the META-INF directory of your web-app, this file will be used to identify the root of the contribution as well as the list of deployable composites.</P> + +<P>Here is a sample sca-contribution.xml used in the calculator-web application:</P> + +<DIV class="code panel" style="border-width: 1px;"><DIV class="codeContent panelContent"> +<PRE class="code-java"> +<?xml version=<SPAN class="code-quote">"1.0"</SPAN> encoding=<SPAN class="code-quote">"UTF-8"</SPAN>?> +<contribution xmlns=<SPAN class="code-quote">"http:<SPAN class="code-comment">//www.osoa.org/xmlns/sca/1.0"</SPAN>> +</SPAN> <deployable composite=<SPAN class="code-quote">"Calculator"</SPAN>/> +</contribution> +</PRE> +</DIV></DIV> + + +<P>Tuscany also supports the scenario where you would drop the SCA composite files inside the META-INF\sca-deployables directory, and this would also be used to identify the root of the contribution and the list of deployable composites.</P> + +<P><B>pros</B>: Consistent programming model between JSP and Servlets<BR> +<B>cons</B>: require web.xml integration and sca-contribution.xml, although the trend is to make web apps simpler and web.xml is optional in newer specs of J2EE</P> + +<H2><A name="TuscanySCAWebApplicationIntegrationStory-IntegratingusingpureJSPcode"></A>Integrating using pure JSP code</H2> + +<P>Integration using useBean tag: This approach would be very simple, and would basically ask the developer to add a useBean to instantiate the domain, and a setProperty to set the deployableComposite/</P> +<DIV class="code panel" style="border-width: 1px;"><DIV class="codeContent panelContent"> +<PRE class="code-java"> +<jsp:useBean id=<SPAN class="code-quote">"SCADomain"</SPAN> class=<SPAN class="code-quote">"org.apache.tuscany.host.embedded.SCADomainBean"</SPAN> scope=<SPAN class="code-quote">"application"</SPAN>> + <jsp:setProperty property=<SPAN class="code-quote">"deployableComposite"</SPAN> value=<SPAN class="code-quote">"Calculator.composite"</SPAN> /> +</jsp:useBean> +... +<% + SCADomain domain = (SCADomain) application.getAttribute(<SPAN class="code-quote">"SCADomain"</SPAN>); + CalculatorService calculatorService = domain.getService(CalculatorService.class, <SPAN class="code-quote">"CalculatorServiceComponent"</SPAN>); +%> +</PRE> +</DIV></DIV> +<P>Optional attributes can be defined by using the <jsp:setProperty> calls, if no attributes are specified, the sca-contribution.xml will be used to hint the root of the contribution as well as to find the deployable composites.</P> + +<P>In this scenario, the SCADomain is stopped when the application goes out of scope and the garbage collection process the termination of the SCADomain.</P> + +<P><B>pros</B>: simple, does not involve changes on web.xml<BR> +<B>cons</B>: leaves toping the sca domain/runtime to when garbage collection process the application scope bean, also introduce different programming model between JSP and Servlets.</P> + + + +<H2><A name="TuscanySCAWebApplicationIntegrationStory-References"></A>References</H2> + +<P><A href="http://java.sun.com/j2ee/1.4/docs/tutorial/doc/" class="external-link" rel="nofollow">http://java.sun.com/j2ee/1.4/docs/tutorial/doc/</A><BR> +<A href="http://java.sun.com/products/jsp/docs.html#syntax" class="external-link" rel="nofollow">http://java.sun.com/products/jsp/docs.html#syntax</A><BR> +<A href="http://java.sun.com/products/jsp/tags/11/syntaxref11.fm14.html" class="external-link" rel="nofollow">http://java.sun.com/products/jsp/tags/11/syntaxref11.fm14.html</A><BR> +<A href="http://java.sun.com/products/javabeans/docs/spec.html" class="external-link" rel="nofollow">http://java.sun.com/products/javabeans/docs/spec.html</A></P> +</TD></TR></TBODY></TABLE> + </DIV> + </DIV> + </DIV> + <!-- pageContent macro end --> + + </TD> + </TR> + </TABLE> + + <!-- footer macro --> + <SCRIPT src="http://www.google-analytics.com/urchin.js" type="text/javascript"> + </SCRIPT> + <SCRIPT type="text/javascript"> + _uacct = "UA-1174707-5"; + urchinTracker(); + </SCRIPT> + + <A href="http://www.statcounter.com/" target="_blank"><IMG src="http://c26.statcounter.com/counter.php?sc_project=2619156&java=0&security=94bd7e7d&invisible=0" alt="website stats" border="0"></A> + + <DIV class="footer"> + Copyright � 2003-2012, The Apache Software Foundation </BR> + Apache Tuscany and the Apache Tuscany project logo are trademarks of The Apache Software Foundation. + </DIV> + <!-- footer macro end --> + + </BODY> +</HTML> |