I would like to put some of the hibernate configuration in a property file to make it editable without build and deploy.
I tried to solve my problem by following the instructions from Create JPA EntityManager without persistence.xml configuration file
app.properties:
hibernate.show_sql=true
hibernate.dialect=org.hibernate.dialect.MySQLDialect
hibernate.hbm2ddl.auto=validate
hibernate.show_sql=true
hibernate.format_sql=true
hibernate.default_schema=myschema
persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<!-- Persistence deployment descriptor for dev profile -->
<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="pu">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>jdbc/appDatasource</jta-data-source>
<properties>
<property name="jboss.entity.manager.factory.jndi.name" value="java:/appEntityManagerFactory"/>
</properties>
</persistence-unit>
</persistence>
In the initialization code the application executes the following sequence, (which finds the properties),
Properties props = new Properties();
InputStream is = ClassLoader.getSystemResourceAsStream( "app.properties" );
props.load( is );
Persistence.createEntityManagerFactory( "pu", props );
but fails with the error message:
INFO [SessionFactoryImpl] building session factory
INFO [SessionFactoryObjectFactory] Not binding factory to JNDI, no JNDI name configured
ERROR [STDERR] javax.persistence.PersistenceException: [PersistenceUnit: pu] Unable to build EntityManagerFactory
Does anyone have an idea what could be wrong with my configuration?
Versions: JBoss 4.3 Seam: 2.1.2
EDIT:
JBoss JNDI enlists "pu" as persistence unit:
persistence.units:ear=app.ear,jar=app.jar,unitName=pu (class: org.hibernate.impl.SessionFactoryImpl)
As an alternative to your current approach and since you're using Hibernate, you could use Hibernate to configure JPA by declaring a hibernate.cfg.xml
file using the hibernate.ejb.cfgfile
property, like this:
<persistence>
<persistence-unit name="manager1" transaction-type="JTA">
<jta-data-source>java:/DefaultDS</jta-data-source>
<properties>
<property name="hibernate.ejb.cfgfile" value="/hibernate.cfg.xml"/>
</properties>
</persistence-unit>
</persistence>
My understanding is that the hibernate.cfg.xml
is just supposed to be on the classpath (so it could be outside the packaged archive).