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<!--
Copyright (c) 2005 The Apache Software Foundation or its licensors, as applicable.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta http-equiv="Content-Style-Type" content="text/css">
<title>Tuscany Hello World Web Sample</title><!-- LINK rel="stylesheet" href="ait.css" type="text/css" --></head>
<body>
<h2>Tuscany Hello World WS Client Sample</h2>
<h3>Overview</h3>
<p>The Tuscany hello world WS client sample shows using the Tuscany SCA
runtime in a J2SE environment invoking a web service. </p>
<h3>Setup</h3>
The jars for a <a href="http://wiki.apache.org/ws/Tuscany/J2SESetup" target="_blank">J2SE setup</a> including those necessary
for web services are required including the sample's own jar <span style="font-weight: bold;">helloworldwsclient-SNAPSHOT.jar</span>.
<h3>Running</h3>
Using JDK 1.5 java command with the previous mentioned jars run the
class org.apache.tuscany.samples.helloworldwsclient.HelloWorldClient
<h3>Results</h3>
<p>The sample when run should simply display to the standard
output:<br>
<code>Hello World</code></p>
<h3>Code Overview</h3>
The source files are physically organized as shown below:<br>
<table style="text-align: left; width: 100%;" border="1" cellpadding="2" cellspacing="2">
<tbody>
<tr>
<td>main<br>
+---java<br>
¦ ¦
sca.module<br>
¦ ¦<br>
¦ +---org<br>
¦
+---apache<br>
¦
+---tuscany<br>
¦
+---samples<br>
¦
+---helloworldwsclient<br>
¦
HelloWorldClient.java<br>
¦
HelloWorldService.java<br>
¦
HelloWorldServiceComponentImpl.java<br>
¦<br>
+---resources<br>
¦
tuscany-model.config<br>
¦<br>
+---wsdl<br>
helloworld.wsdl<br>
<br>
</td>
</tr>
</tbody>
</table>
<br>
<br>
<table style="text-align: left; width: 100%; height: 154px;" border="0" cellpadding="2" cellspacing="2">
<tbody>
<tr>
<td style="vertical-align: top; height: 62px;">sca.module</td>
<td style="height: 62px;">Defines the SCA module,
externalService
and component. Defines for the
HelloWorldServiceComponent component and the Java class that
implements the component For the externalService it defines WSDL for
the
service, the Java interface provided by the service.
The the HelloWorldServiceComponent is via a
referenced wired to the externalService</td>
</tr>
<tr>
<td style="vertical-align: top;">HelloWorldClient.java</td>
<td>Creates a Tuscany runtime and starts it.
Obtains the module context which was defined by the
sca.module file. From the module context locates the
HelloWorldServiceComponent and then calls the getGreetings
method to invoke the component.</td>
</tr>
<tr>
<td style="vertical-align: top; height: 26px;">HelloWorldService.java</td>
<td style="height: 26px;">Defines the Java interface
implemented by the component.</td>
</tr>
<tr>
<td style="vertical-align: top;">HelloWorldServiceComponentImpl.java</td>
<td>It does not directly implement the service; instead it
has an SCA reference that is wired in the sca.module to an
externalService that will provide the service. The service providing the implementation is the <a
href="../helloworldws/readme.htm" target="_blank">helloworldws</a> sample.<br>
</td>
</tr>
<tr>
<td>tuscany-model.config</td>
<td>Maps the SCA Entry point WSDL to the physical WSDL file
location.</td>
</tr>
<tr>
<td>helloworld.wsdl</td>
<td>WSDL for the service.</td>
</tr>
</tbody>
</table>
</body></html>
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