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POOpenJPA Enhance -- The identity field defined in the {0} Embeddable is not supported
 

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  1. POOpenJPA Enhance -- The identity field defined in the {0} Embeddable is not supported
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    <p>I am using the following JPA code with MySQL DB and OpenJPA 2.2.2:</p> <pre><code>@MappedSuperclass public abstract class IdentifiableEntity implements Serializable { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private long id; // getters, setters, etc. } @Entity public class User extends IdentifiableEntity { private String name; // getters, setters, etc. } </code></pre> <p>I get this message when doing <code>User user = new User();</code> in JSE environment:</p> <blockquote> <p>ERROR [main] openjpa.Enhance - The identity field defined in the IdentifiableEntity Embeddable is not supported.</p> </blockquote> <p>I tried running with the OpenJPA dynamically loaded class enhancer on Oracle 1.6 JDK. The code seems to be executing correctly in spite of the message.</p> <p>Why am I getting this message? Is it benign?</p> <p>Here are the contents of <code>persistence.xml</code>:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.0" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"&gt; &lt;persistence-unit name="persistenceUnit"&gt; &lt;provider&gt;org.apache.openjpa.persistence.PersistenceProviderImpl&lt;/provider&gt; &lt;properties&gt; &lt;property name="openjpa.ConnectionURL" value="jdbc:mysql://localhost:3306/playground?useUnicode=true&amp;amp;characterEncoding=UTF-8"/&gt; &lt;property name="openjpa.ConnectionDriverName" value="com.mysql.jdbc.Driver"/&gt; &lt;property name="openjpa.ConnectionUserName" value="guest"/&gt; &lt;property name="openjpa.ConnectionPassword" value="guest"/&gt; &lt;!-- Classes should be enhanced at build-time for production. --&gt; &lt;property name="openjpa.RuntimeUnenhancedClasses" value="unsupported"/&gt; &lt;property name="openjpa.DynamicEnhancementAgent" value="true"/&gt; &lt;!-- Enable logging --&gt; &lt;property name="openjpa.Log" value="DefaultLevel=WARN, Runtime=INFO, Tool=INFO, SQL=TRACE" /&gt; &lt;property name="openjpa.ConnectionFactoryProperties" value="PrintParameters=true" /&gt; &lt;/properties&gt; &lt;/persistence-unit&gt; &lt;/persistence&gt; </code></pre>
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    1. USVictor Lyuboslavsky
    1. USVictor Lyuboslavsky
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      1. POOpenJPA Enhance -- The identity field defined in the {0} Embeddable is not supported
      1. USBartosz Jakubowski
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    1. CODo you have an @Embeddable annotation somewhere? The error message seems to suggest that you do.
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      1. POOpenJPA Enhance -- The identity field defined in the {0} Embeddable is not supported
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    2. CONo `Embeddable` annotation. I'm guessing `Embeddable` is implied because I'm using a `MappedSuperclass`.
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      1. POOpenJPA Enhance -- The identity field defined in the {0} Embeddable is not supported
      1. USVictor Lyuboslavsky
    3. COCan you post the contents of your persistence.xml, and is there an exception logged with the ERROR?
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      1. POOpenJPA Enhance -- The identity field defined in the {0} Embeddable is not supported
      1. USRick
 

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