On Feb 15, 2008, at 9:36 AM, <[EMAIL PROTECTED]> <[EMAIL PROTECTED]
> wrote:
Hi,
well it works now. Because I have changed the persistence provider
to Hibernate. The problem now is that entities are not persisted.
persist() simply does nothing. But no error is shown.
The persistence.xml is as follows. I have also a full log of the
whole Hibernate. I cannot find an error.
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0"
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
">
<persistence-unit name="testFacadePu" transaction-
type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<non-jta-data-source>java:jdbc/DerbyDatabase</non-jta-data-source>
<properties>
<property name="hibernate.hbm2ddl.auto"
value="create-drop" />
<property name="openjpa.jdbc.SynchronizeMappings"
value="buildSchema(ForeignKeys=true)" />
<property name="hibernate.hbm2ddl.auto"
value="create-drop" />
</properties>
</persistence-unit>
</persistence>
I'd definitely use transaction-type="TRANSACTION" instead of
transaction-type="RESOURCE_LOCAL" with either OpenJPA or Hibernate.
RESOURCE_LOCAL is very difficult to use and transaction-
type="TRANSACTION" is not slow like people normally think. At the
very least, start with the default of transaction-type="TRANSACTION",
get that to work and switch it later if it's still important.
Regardless of if you use transaction-type="RESOURCE_LOCAL" or
transaction-type="TRANSACTION" you definitely should supply both <jta-
data-source> and <non-jta-data-source>.
The DataSource for the jta-data-source should always have it's
'JtaManaged' property set to 'true' (this is the default)
The DataSource for the non-jta-data-source should always have it's
'JtaManaged' property set to 'false'.
In your test code, you could do it like this:
if (DB_MODE == MYSQL) {
properties.setProperty("MySqlDatabase", "new://Resource?
type=DataSource");
properties.setProperty("MySqlDatabase.JdbcUrl",
"jdbc:mysql://localhost:3306/tpg-server");
properties.setProperty("MySqlDatabase.JdbcDriver",
"com.mysql.jdbc.Driver");
properties.setProperty("MySqlDatabase.UserName", "tpg");
properties.setProperty("MySqlDatabase.Password", "tpg");
properties.setProperty("MySqlDatabaseUnmanaged", "new://
Resource?type=DataSource");
properties.setProperty("MySqlDatabaseUnmanaged.JdbcUrl",
"jdbc:mysql://localhost:3306/tpg-server");
properties.setProperty("MySqlDatabaseUnmanaged.JdbcDriver",
"com.mysql.jdbc.Driver");
properties.setProperty("MySqlDatabaseUnmanaged.UserName",
"tpg");
properties.setProperty("MySqlDatabaseUnmanaged.Password",
"tpg");
properties.setProperty("MySqlDatabaseUnmanaged.JtaManaged",
"false");
} else if (DB_MODE == DERBY) {
properties.setProperty("DerbyDatabase", "new://Resource?
type=DataSource");
properties.setProperty("DerbyDatabase.JdbcUrl",
"jdbc:derby:derbyDB;create=true");
properties.setProperty("DerbyDatabase.JdbcDriver",
"org.apache.derby.jdbc.EmbeddedDriver");
properties.setProperty("DerbyDatabaseUnmanaged", "new://
Resource?type=DataSource");
properties.setProperty("DerbyDatabaseUnmanaged.JdbcUrl",
"jdbc:derby:derbyDB;create=true");
properties.setProperty("DerbyDatabaseUnmanaged.JdbcDriver",
"org.apache.derby.jdbc.EmbeddedDriver");
properties.setProperty("DerbyDatabaseUnmanaged.JtaManaged",
"false");
}
-David
