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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 10px 0"> <p style="margin: 10px 0 0 0; margin-top: 0">I just wanted to see if we all agree that the root of the persistence unit is not the META-INF folder but the folder that contains the META-INF. From jpa2.1 spec section "8.2 Persistence Unit Packaging":</p>
<blockquote style="margin: 10px 0 0 0; border-left: 1px solid #cccccc; color: #707070; margin-left: 19px; padding: 10px 20px">
<p style="margin: 10px 0 0 0; margin-top: 0">Within Java EE environments, an EJB-JAR, WAR, EAR, or application client JAR can define a persistence unit. Any number of persistence units may be defined within these scopes. </p>
<p style="margin: 10px 0 0 0">A persistence unit may be packaged within one or more jar files contained within a WAR or EAR, as a set of classes within an EJB-JAR file or in the WAR classes directory, or as a combination of these as defined below.</p>
<p style="margin: 10px 0 0 0">A persistence unit is defined by a persistence.xml file. The jar file or directory whose META-INF directory contains the persistence.xml file is termed the root of the persistence unit.<br> In Java EE environments, the root of a persistence unit must be one of the following:</p>
<p style="margin: 10px 0 0 0">• an EJB-JAR file<br> • the WEB-INF/classes directory of a WAR file <span class="error">[87]</span><br> • a jar file in the WEB-INF/lib directory of a WAR file<br> • a jar file in the EAR library directory<br> • an application client jar file</p>
</blockquote> <p style="margin: 10px 0 0 0">Some examples from the referenced jpa2.1 spec section "8.2.1.6.3 Jar Files":</p>
<blockquote style="margin: 10px 0 0 0; border-left: 1px solid #cccccc; color: #707070; margin-left: 19px; padding: 10px 20px">
<p style="margin: 10px 0 0 0; margin-top: 0">Example 6:<br> app.ear<br> lib/earEntities.jar<br> war2.war<br> WEB-INF/classes/META-INF/persistence.xml<br> persistence.xml contains:<br> <jar-file>../../lib/earEntities.jar</jar-file><br> Example 7:<br> app.ear<br> lib/earEntities.jar<br> war1.war<br> WEB-INF/lib/warPUnit.jar<br> (with<br> META-INF/persistence.xml )<br> persistence.xml contains:<br> <jar-file>../../../lib/earEntities.jar</jar-file></p>
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