Tuesday, March 12, 2013

Properties and config in persistence.xml

List of elements in persistence.xml

<!-- turn off 2nd level caching (optional), values: NONE, ALL, DISABLE_SELECTIVE, ENABLE_SELECTIVE,  -->
        <shared-cache-mode>NONE</shared-cache-mode>
<!-- desired provider (optional), if not present, default provider will be used -->
        <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<!-- optional declaration of used datasource, if not specified, connection properties must be specified, otherwise will use specified datasrouce in container -->
<jta-data-source>jdbc/cbn</jta-data-source>

List of standard properties

Driver: <property name="javax.persistence.jdbc.driver" value="org.apache.derby.jdbc.ClientDriver"/>
URL: <property name="javax.persistence.jdbc.url" 
       value="jdbc:derby://localhost:1527/chapter02DB;create=true"/>
User: <property name="javax.persistence.jdbc.user" value="APP"/>
Password: <property name="javax.persistence.jdbc.password" value="APP"/>

Hibernate properties

Debug SQL:  <property name="hibernate.show_sql" value="true"/>
Schema generation (optional):
            <!-- create the database schema automatically, values: create-drop, update -->
            <property name="hibernate.hbm2ddl.auto" value="create-drop"/>
Dialect:   <property name="hibernate.dialect" value="org.hibernate.dialect.H2Dialect" />

EclipseLink properties

Schema generation (optional):
      <!-- create the database schema automatically, values: create-tables, drop-and-create-tables -->
      <property name="eclipselink.ddl-generation" value="create-tables"/>

Resources

  • http://antoniogoncalves.org/2009/07/05/jpa-2-0-standard-properties-in-persistence-xml/
  • Netbeans persistence.xml editor

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