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| <title>2. Non-EE Use</title><link rel="stylesheet" href="css/docbook.css" type="text/css"><meta name="generator" content="DocBook XSL Stylesheets V1.72.0"><link rel="start" href="manual.html" title="Apache OpenJPA User's Guide"><link rel="up" href="jpa_overview_persistence.html" title="Chapter 6. Persistence"><link rel="prev" href="jpa_overview_persistence.html" title="Chapter 6. Persistence"><link rel="next" href="jpa_overview_emfactory.html" title="Chapter 7. EntityManagerFactory"></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">2. |
| Non-EE Use |
| </th></tr><tr><td width="20%" align="left"><a accesskey="p" href="jpa_overview_persistence.html">Prev</a> </td><th width="60%" align="center">Chapter 6. |
| Persistence |
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| Non-EE Use |
| </h2></div></div></div><p> |
| The example below demonstrates the <code class="classname">Persistence</code> class in |
| action. You will typically execute code like this on application startup, then |
| cache the resulting factory for future use. This bootstrapping code is only |
| necessary in non-EE environments; in an EE environment <code class="classname"> |
| EntityManagerFactories</code> are typically injected. |
| </p><div class="example"><a name="jpa_overview_persistence_getemfactory"></a><p class="title"><b>Example 6.2. |
| Obtaining an EntityManagerFactory |
| </b></p><div class="example-contents"><pre class="programlisting"> |
| // if your persistence.xml file does not contain all settings already, you |
| // can add vendor settings to a map |
| Properties props = new Properties(); |
| ... |
| |
| // create the factory defined by the "openjpa" entity-manager entry |
| EntityManagerFactory emf = Persistence.createEntityManagerFactory("openjpa", props); |
| </pre></div></div><br class="example-break"></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="jpa_overview_persistence.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="jpa_overview_persistence.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="jpa_overview_emfactory.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 6. |
| Persistence |
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| EntityManagerFactory |
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