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examples.ejb20.message (WebLogic Server 8.1 Examples)
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</td><td valign=bottom align=right><b>WebLogic Server 8.1 Code Examples</b>, BEA Systems, Inc.</td></EM>
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<H2>
Package examples.ejb20.message
</H2>
This example is a package that demonstrates an
Enterprise Java Message Bean written to the EJB 2.0 specification.
<P>
<B>See:</B>
<BR>
<A HREF="#package_description"><B>Description</B></A>
<P>
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<TD COLSPAN=2><FONT SIZE="+2">
<B>Class Summary</B></FONT></TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD WIDTH="15%"><B><A HREF="Client.html">Client</A></B></TD>
<TD>This class illustrates calling a Message-Driven bean and publishing
quotes on a topic.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD WIDTH="15%"><B><A HREF="MessageTraderBean.html">MessageTraderBean</A></B></TD>
<TD>Demonstrates usage of a Message-Driven EJB.</TD>
</TR>
</TABLE>
<P>
<A NAME="package_description"><!-- --></A><H2>
Package examples.ejb20.message Description
</H2>
<P>
<p>This example is a package that demonstrates an
Enterprise Java Message Bean written to the EJB 2.0 specification.
<p>
The example demonstrates:
<ul>
<li>Usage of an entity EJBean written to the EJB 2.0 specification
<li>Using application-defined exceptions
<li><a href="#Client">Client</a> application
</ul>
<h3>
Pre-Built Examples</h3>
<!-- ejb20_message.ear is actually in the SAMPLES_HOME\domains\examples\applications directory in Olympic Load 13, so, in fact, this example is shipped pre-built.
<p>This EJB 2.0 example is not shipped pre-built. To run these examples, you must set up, build, and run the example, following the instructions below.
-->
<p>This EJB 2.0 example is shipped pre-built. However, if you want to re-run this example, you can build it
following the instructions in <a href="#Build the example">Build the example</a> and then re-run it following the
instructions in <a href="#Run the example">Run the example</a>.
<a name="Client"></a><h2>Client application</h2>
The
<a href="Client.html">Client</a>
application performs these steps:
<ol>
<li>Calls a Message-Driven bean
<li>Publishes quotes on a topic
<li>Prints the messages to the server shell after the Client example is run
</ol>
<p>
To get the most out of this example, first read through the source
code files.
<ul>
<li>Client applications
<dd><a href="Client.java">Client.java</a>
<p>
<li>Deployment
<dd><a href="ejb-jar.xml">ejb-jar.xml</a>
<dd><a href="weblogic-ejb-jar.xml">weblogic-ejb-jar.xml</a>
</ul>
Start with the XML deployment files <a href="ejb-jar.xml">ejb-jar.xml</a> and <a href="weblogic-ejb-jar.xml">weblogic-ejb-jar.xml</a> to find the general structure of the EJBean, which classes are used for the different objects and interfaces, then look at <a href="Client.java">Client</a> code to see how the application works.
<p>
These three sections cover what to do:
<p>
<ol>
<li><a href="#Build the example">Build the example</a>
<li><a href="#Start the Examples server">Start the Examples server</a>
<li><a href="#Run the example">Run the example</a>
</ol>
<h3><a name="Build the example">Build the example</a></h3>
Set up your development shell as described in
<a href=../../examples.html#environment>Setting up your environment</a>.
<p>
We provide a build script for you to build the example:
<p>The build script is <b><a href="build.xml">build.xml</a></b>.
<p>Run the build script using the following Java ant command:
<pre>prompt><b> ant</b></pre>
<p>
The script will build the example and place the files in the
correct locations in your WebLogic Server distribution:
<ul>
<li>Client.jar file: in <font face="Courier New" size=-1>SAMPLES_HOME\server\examples\build\clientclasses</font>
<li>EJB (in EAR file): in <font face="Courier New" size=-1>SAMPLES_HOME\domains\examples\applications\ejb20_message.ear</font>
</ul>
<p>
Running the build script places the EJB in the <font face="Courier New"
size=-1>%applications%</font> directory, where it automatically
deploys once the server is started. If you are already running the server and build
another EJB, it is automatically placed in this directory and instantly deployed.
<p>
Additional information on using the build scripts
is found in
<a href="../../examples.html#buildScripts">More About Building Examples</a>.
<h3><a name="Start the Examples server">Start the Examples server</a></h3>
<ol>
<li><a href=../../examples.html#startServer>Start the Examples server</a>.
<!-- Taking this out because the EJB deploys automatically when server starts; no need for manual deployment instructions
<p>
<li><a href=../../examples.html#console >
Start the Administration Console.</a>
<p>
<li>Click the Deployments node in the left pane and select EJB.
<p>
A list of deployed EJBs displays in the left pane.
<p>
<li>Choose the EJB that you want to deploy from the list of deployment units.
<p>
<li>On the Edit EJB Descriptor page in the right pane, select the Targets tab.
<p>
<li> Verify that the EJB is deployed on the examplesServer. The examplesServer should be listed in the Chosen column.
-->
</ol>
<h3><a name="Run the example"></a>Run the example</h3>
<ol>
<li>Run the client in a separate command line window. Set up your client as described in
<a href=../../examples.html#environment>Setting up your environment</a>,
and then run the client by entering:
<!--
<pre><font face="Courier New">prompt><b> java examples.ejb20.message.Client</b></font></pre>
<p>
If you're not running the WebLogic Server with its default settings,
you will have to run the client using:
-->
<pre> prompt><b> ant run </b> </pre>
<p>
<li>If you're running the <font face="Courier New" size=-1>Client</font> example,
you should get output similar to this from the client application in the server shell:
<pre><font face="Courier New">In client shell:
Beginning message.Client...
End message.Client...
In server.shell:
Received new quote : BEAS 40 1/8
Received new quote : BEAS 40 1/8
Received new quote : SUNW 79 1/2
Received new quote : SUNW 79 1/2
Received new quote : IBM 82 1/4
Received new quote : IBM 82 1/4
End message.Client...
</font></pre>
</ol>
<h2>There's more...</h2>
Read more about EJB in
<a href="http://e-docs.bea.com/wls/docs81/ejb/index.html">BEA WebLogic
Server Enterprise Java Beans</a>.
<P>
<P>
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<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM>
</td><td valign=bottom align=right>Documentation is available at<br> <a href=http://e-docs.bea.com/wls/docs81>http://e-docs.bea.com/wls/docs81</a></td></EM>
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<a href=http://e-docs.bea.com/wls/docs81/copyright.html>Copyright</a> © 2003 BEA Systems, Inc. All Rights Reserved.
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