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examples.ejb20.basic.beanManaged (WebLogic Server 8.1 Examples)
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<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM>
</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.basic.beanManaged
</H2>
This example is a package that demonstrates an
Enterprise JavaBean.
<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>Interface Summary</B></FONT></TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD WIDTH="15%"><B><A HREF="Account.html"><I>Account</I></A></B></TD>
<TD>The methods in this interface are the public face of AccountBean.
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD WIDTH="15%"><B><A HREF="AccountHome.html"><I>AccountHome</I></A></B></TD>
<TD>This interface is the home interface for the EJBean AccountBean,
which in WebLogic is implemented by the code-generated container class
AccountBeanC. </TD>
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<B>Class Summary</B></FONT></TD>
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<TD WIDTH="15%"><B><A HREF="AccountBean.html">AccountBean</A></B></TD>
<TD>AccountBean is an EntityBean. </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 demonstrates calling an entity EJBean.
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<B>Exception Summary</B></FONT></TD>
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<TD WIDTH="15%"><B><A HREF="ProcessingErrorException.html">ProcessingErrorException</A></B></TD>
<TD>ProcessingErrorException is thrown if the caller attempts
to withdraw more than a certain preset limit from the account.</TD>
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<P>
<A NAME="package_description"><!-- --></A><H2>
Package examples.ejb20.basic.beanManaged Description
</H2>
<P>
<p>This example is a package that demonstrates an
Enterprise JavaBean. The example is an entity EJB called
<font face="Courier New" size=-1>AccountBean</font>.
<p>
The example demonstrates:
<ul>
<li>Usage of an entity EJB
<li>Bean-managed persistence; the code in the EJB
directly accesses the data storage
<li>Using application-defined exceptions
<li><a href="#Client">Client</a> application
</ul>
<a name="Client"></a><h2>Client application</h2>
The Client
application performs these steps:
<ol>
<li>Finds or creates 20 separate accounts
<li>Prints the balances for all accounts
<li>Finds all accounts with a balance greater than $5000
<li>Removes the accounts
</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>
<dd>EJBeanManagedClient.jsp (see <a href="../../../jsp/package-summary.html">JSP</a>)
<p>
<li>Interfaces
<dd><a href="Account.java">Account.java</a>
<dd><a href="AccountHome.java">AccountHome.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>
<p>
<li>Exception
<dd><a href="ProcessingErrorException.java">ProcessingErrorException.java</a>
<p>
<li> Server (EJB)
<dd><a href="AccountBean.java">AccountBean.java</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 EJB, 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.
<h3>
Pre-Built Examples</h3>
<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>.
<p>
These four sections cover what to do:
<p>
<ol>
<li><a href="#Set Up the database">Set Up the database</a>
<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="Set Up the database">Set Up the database</a></h3>
<p>
This example is preconfigured to work with the PointBase database, included with the WebLogic Server distribution. As you'll use a database for the persistent storage of the entity EJB,
you'll need to set it up.
The persistent storage is completely invisible to the client;
the actual storage is handled by the EJB directly and not the
container.
<p>
With database persistence, each instance of an EJB is written to a
row in a table.
If you want or need to run this example with Oracle, see <a href=../../../database_setup.html>Database SetUp</a> for instructions.
<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>
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