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</script><!--End Google Analytics code--></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">7.&nbsp;Working with Common Enterprise Libraries</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch06s07.html">Prev</a>&nbsp;</td><th width="60%" align="center">&nbsp;</th><td width="20%" align="right">&nbsp;<a accesskey="n" href="ch07s02.html">Next</a></td></tr></table><hr></div><div class="chapter" lang="en"><div class="titlepage"><div><div><h2 class="title"><a name="common-libraries"></a>7.&nbsp;Working with Common Enterprise Libraries</h2></div></div></div><div class="section" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="common-libraries-hibernate"></a>7.1&nbsp;Working with Hibernate</h2></div></div></div><div class="section" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="common-libraries-hibernate-import"></a>Importing Hibernate</h3></div></div></div><p>
Hibernate uses CGLIB to dynamically create subclasses of your entity types at
runtime. To guarantee that Hibernate and CGLIB can correctly see the types,
you must add an <code class="literal">Import-Library</code> or <code class="literal">Import-Bundle</code> for the Hibernate library or bundle
into any bundle that uses Hibernate directly.
</p><p>
Additionally, if other bundles in your application contain types to be persisted by Hibernate, then be sure to specify the <code class="code">import-scope</code> directive of the <code class="literal">Import-Bundle</code> header in the bundle that uses Hibernate directly. The <code class="literal">import-scope</code> directive tells Virgo Server for Apache Tomcat to implicitly import the bundle into all other bundles that make up the application; this ensures that bundles that indirectly depend on the generated Hibernate classes have access to them, but you do not have to explicitly update their <code class="code">Import-Bundle</code> header, ensuring modularity. For example:
</p><pre class="programlisting">
Import-Bundle: com.springsource.org.hibernate;version="[3.2.6.ga,3.2.6.ga]";<span class="bold"><strong>import-scope:=application</strong></span></pre><p>
The <code class="code">import-scope</code> directive works only for the bundles in a scoped application (PARs or plans.)
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