How can I change table names in KIE / Drools persistence? - jpa

Question

My question is pretty straightforward. My persistence.xml looks like this:
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0">
<persistence-unit name="org.jbpm.domain" transaction-type="JTA">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<jta-data-source>jdbc/jbpm</jta-data-source>
<!-- SessionInfo -->
<class>org.drools.persistence.info.SessionInfo</class>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect"/>
...
</properties>
</persistence-unit>
</persistence>
And this creates SessionInfo and SESSIONINFO_ID_SEQ tables in my database. However, these names are not in our organisational standards, and I am trying to change the table names at least (and the column names if I could). How can I achieve this? Thanks!

Answer 1

I did it using an orm.xml file under WEB-INF/classes/META-INF, which looked like this:
<?xml version="1.0" encoding="UTF-8"?>
<entity-mappings
xmlns="http://java.sun.com/xml/ns/persistence/orm"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence/orm orm_2_0.xsd"
version="2.0">
<entity class="org.drools.persistence.info.SessionInfo">
<table name="session_info"/>
<attributes>
<id name="id">
<column name="id"/>
<generated-value generator="session_info_id_seq" strategy="SEQUENCE"/>
<sequence-generator name="session_info_id_seq" sequence-name="session_info_id_seq"/>
</id>
<basic name="lastModificationDate">
<column name="last_modification_date"/>
</basic>
<basic name="rulesByteArray">
<column name="rules_byte_array"/>
</basic>
<basic name="startDate">
<column name="start_date"/>
</basic>
<version name="version">
<column name="optlock"/>
</version>
</attributes>
</entity>
</entity-mappings>
For further reference on XML overriding: Here's the official guide.