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| <title>2. Metadata Repository</title><base href="display"><link rel="stylesheet" type="text/css" href="css/docbook.css"><meta name="generator" content="DocBook XSL Stylesheets V1.79.1"><link rel="home" href="manual.html" title="Apache OpenJPA 3.0 User's Guide"><link rel="up" href="ref_guide_meta.html" title="Chapter 6. Metadata"><link rel="prev" href="ref_guide_meta.html" title="Chapter 6. Metadata"><link rel="next" href="ref_guide_meta_jpa.html" title="3. Additional JPA Metadata"></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. Metadata Repository</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ref_guide_meta.html">Prev</a> </td><th width="60%" align="center">Chapter 6. |
| Metadata |
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| <p>The openjpa.MetaDataRepository configuration property controls the configuration of |
| the MetaDataRepository. The following are valid properties:</p> |
| <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p> |
| <code class="literal">Preload</code>: A boolean property. If true, OpenJPA will eagerly load the repository on |
| EntityManagerFactory creation. As a result, all Entity classes will be eagerly loaded by the JVM. |
| Once MetaData preloading completes, all locking is removed from the MetaDataRepository and this will |
| result in a much more scalable repository. If false, the repository will be lazily loaded as Entity |
| classes are loaded by the JVM. The default value is false. |
| </p> |
| </li></ul></div> |
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| <div class="example" id="ref_guide_meta_repo"><p class="title"><b>Example 6.3. |
| Setting the Preload Property on Metadata Repository |
| </b></p><div class="example-contents"> |
| |
| <pre class="programlisting"> |
| <property name="openjpa.MetaDataRepository" value="Preload=true"/> |
| </pre> |
| </div></div><br class="example-break"> |
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| Metadata |
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| Additional JPA Metadata |
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