200a40b332
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1640879 13f79535-47bb-0310-9956-ffa450edef68
166 lines
9.1 KiB
HTML
166 lines
9.1 KiB
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<HTML>
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<HEAD>
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<META name="description" content="Apache Tuscany">
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<META name="keywords" content="apache, apache tuscany, tuscany, service, services, fabric, soa, service oriented architecture, sca, service component architecture, das, sdo, csa, ruby, opensource">
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<LINK type="text/css" rel="stylesheet" href="http://tuscany.apache.org/stylesheets/default.css">
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<LINK rel="SHORTCUT ICON" href="https://cwiki.apache.org/confluence/display/TUSCANY/$images/favicon.ico">
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<TITLE>Apache Tuscany : SCA Native Architecture Guide</TITLE>
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<A href="https://cwiki.apache.org/confluence/pages/viewpage.action?spaceKey=TUSCANY&title=$siteroot"><IMG src="http://tuscany.apache.org/images/TuscanyLogoNEW_Text_120px_bg.jpg" height="91" width="25" border="0"></A>
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<TD>
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<A href="http://tuscany.apache.org/"><IMG src="http://tuscany.apache.org/images/TuscanyLogo.jpg" border="0"></A>
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<DIV style="padding: 2px 10px; margin: 0px;">
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<A href="https://cwiki.apache.org/confluence/pages/editpage.action?pageId=51125">
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<IMG src="http://tuscany.apache.org/images/notep_16.gif" height="16" width="16" border="0" align="absmiddle" title="Edit Page"></A>
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<TABLE border="0" cellpadding="2" cellspacing="0" width="100%">
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<TR class="topBar">
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<TD align="left" valign="middle" class="topBarDiv" nowrap="true" width="100%">
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<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-native.html" title="SCA Native">SCA Native</A> > <A href="sca-native-documentation-menu.html" title="SCA Native Documentation Menu">SCA Native Documentation Menu</A> > <A href="" title="SCA Native Architecture Guide">SCA Native Architecture Guide</A>
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</TD>
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<TD align="right" valign="middle" class="topBarDiv" align="left" nowrap="true">
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<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>
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<TR>
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<TD align="left" valign="top">
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<DIV id="PageContent">
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<DIV class="pagecontent">
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<DIV class="wiki-content">
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<TABLE class="sectionMacro" border="0" cellpadding="5" cellspacing="0" width="100%"><TBODY><TR><TD class="confluenceTd" valign="top" width="15%"><P></P>
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<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;">
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<P><A href="home.html" title="Home">Home</A><BR>
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<A href="http://www.apache.org/licenses/LICENSE-2.0.html" class="external-link" rel="nofollow">License </A><BR>
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<A href="sca-native-get-involved.html" title="SCA Native Get Involved">Get Involved</A><BR>
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<A href="sca-native-found-a-bug.html" title="SCA Native Found a Bug">Found a Bug?</A></P>
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</DIV></DIV>
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<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>SCA Native</B></DIV><DIV class="panelContent" style="background-color: #ECF4D1;">
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<P><A href="sca-native.html" title="SCA Native">SCA Native Home</A><BR>
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<A href="sca-native-releases.html" title="SCA Native Releases">Downloads</A><BR>
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<A href="sca-native-documentation-menu.html" title="SCA Native Documentation Menu">Documentation</A><BR>
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<A href="https://svn.apache.org/repos/asf/tuscany/sca-cpp/" class="external-link" rel="nofollow">Source Code</A></P>
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</DIV></DIV></TD><TD class="confluenceTd" valign="top" width="85%">
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<H1><A name="SCANativeArchitectureGuide-HighlevelarchitectureviewofSCANative"></A>High level architecture view of SCA Native</H1>
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<P>Tuscany SCA Native consists of the <A href="http://svn.apache.org/repos/asf/incubator/tuscany/cpp/sca/runtime/core/" class="external-link" rel="nofollow">kernel</A> and <A href="http://svn.apache.org/repos/asf/incubator/tuscany/cpp/sca/runtime/extensions/" class="external-link" rel="nofollow">extensions</A>.</P>
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<P>The kernel loads any .composite, .xsd, .wsdl or<BR>
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.componentType files found under a directory defined by the<BR>
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TUSCANY_SCACPP_ROOT environment variable. The kernel also loads any<BR>
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extensions found in the Tuscany extensions directory (found in the<BR>
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directory specified by the TUSCANY_SCACPP env variable). The kernel<BR>
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inspects the .composite files and checks that any required extensions<BR>
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that the SCA app uses are loaded, works out how the components are<BR>
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wired together, and then passes the details of the composite to the<BR>
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appropriate extensions. E.g. if the SCDL contains a<BR>
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<implementation.python> element, the contents of that element are<BR>
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passed to the Python extension which will load a defined script, etc.<BR>
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When the SCA app is invoked (via a local client call or a SOAP or REST<BR>
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service binding being called) the kernel uses the appropriate<BR>
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extension to invoke the right methods in the component implementation<BR>
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code.</P>
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<P>The language binding extensions (C++, Ruby, Python, PHP) provide<BR>
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wrapper and proxy code. The wrapper code wraps the component<BR>
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implemented in that language, initialising the component<BR>
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implementation, converting method arguments to the correct types and<BR>
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invoking the defined method with the converted arguments. The proxy<BR>
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code allows the component to call it's references, providing objects<BR>
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that look like standard objects in the component language, but which,<BR>
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when called, convert the method arguments from the language types and<BR>
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invoke the referenced component's wrapper code to invoke the component<BR>
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itself.</P>
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<P>The service and reference binding extensions (SOAP/Axis2C, REST)<BR>
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provide service and reference code. The service code allows Tuscany to<BR>
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run within a container as a service that can be invoked (e.g. as an<BR>
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Axis2C SOAP web service). The reference code allows Tuscany to call<BR>
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other services (that may or may not be other Tuscany services) using<BR>
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that technology to make the call out (e.g. a SOAP call to a Web<BR>
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Service).<BR>
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See the various samples we have for examples of all this.</P>
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</TD></TR></TBODY></TABLE>
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</DIV>
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</DIV>
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</DIV>
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</TABLE>
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<DIV class="footer">
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Copyright <20> 2003-2012, The Apache Software Foundation </BR>
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Apache Tuscany and the Apache Tuscany project logo are trademarks of The Apache Software Foundation.
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