JPA EntityManagerFactory don't override persistence.xml file - jpa

Question

When I lunch the app it is not take these properties but the default properties in glassfish-ressource.xml. I'm using JPA with nebeans automatical generated beans and entities. I want switch database at runtime.
Here his my session class
package facade;
import entities.Tpe;
import java.util.HashMap;
import java.util.Map;
import javax.annotation.PostConstruct;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import javax.persistence.PersistenceContext;
/**
*
* #author Emmanuel
*/
#Stateless
public class TpeFacade extends AbstractFacade<Tpe> {
private EntityManager em;
#Override
public EntityManager getEntityManager() {
EntityManagerFactory emf=null;
Map properties = new HashMap();
properties.put("javax.persistence.transactionType", "JTA");
properties.put("javax.persistence.jdbc.driver", "jdbc:mysql://192.20.3.81:3306/piv?zeroDateTimeBehavior=convertToNull");
properties.put("javax.persistence.jdbc.url", "com.mysql.jdbc.Driver");
properties.put("javax.persistence.jdbc.database", "piv");
properties.put("javax.persistence.jdbc.user", "username");
properties.put("javax.persistence.jdbc.password", "password");
try {
emf = Persistence.createEntityManagerFactory("ConfigurationTPEPU", properties);
System.out.println("emfznezizzhzz "+emf.getProperties() );
} catch (Exception e) {
}
em = (EntityManager) emf.createEntityManager();
return em ;
}
public TpeFacade() {
super(Tpe.class);
}
}
and my persistence file content
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
<persistence-unit name="ConfigurationTPEPU" transaction-type="JTA">
<jta-data-source>java:app/connexion81</jta-data-source>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
</persistence-unit>
</persistence>
the glassfish-ressources.xml content
<resources>
<jdbc-connection-pool allow-non-component-callers="false" associate-with-thread="false" connection-creation-retry-attempts="0" connection-creation-retry-interval-in-seconds="10" connection-leak-reclaim="false" connection-leak-timeout-in-seconds="0" connection-validation-method="auto-commit" datasource-classname="com.mysql.jdbc.jdbc2.optional.MysqlDataSource" fail-all-connections="false" idle-timeout-in-seconds="300" is-connection-validation-required="false" is-isolation-level-guaranteed="true" lazy-connection-association="false" lazy-connection-enlistment="false" match-connections="false" max-connection-usage-count="0" max-pool-size="32" max-wait-time-in-millis="60000" name="mysql_piv_rootPool" non-transactional-connections="false" pool-resize-quantity="2" res-type="javax.sql.DataSource" statement-timeout-in-seconds="-1" steady-pool-size="8" validate-atmost-once-period-in-seconds="0" wrap-jdbc-objects="false">
<property name="serverName" value="localhost"/>
<property name="portNumber" value="3306"/>
<property name="databaseName" value="db1"/>
<property name="User" value="root"/>
<property name="Password" value="gsmcom"/>
<property name="URL" value="jdbc:mysql://localhost:3306/petroivoire?zeroDateTimeBehavior=convertToNull"/>
<property name="driverClass" value="com.mysql.jdbc.Driver"/>
</jdbc-connection-pool>
<jdbc-resource enabled="true" jndi-name="java:app/connexion81" object-type="user" pool-name="mysql_piv_rootPool"/>
</resources>

Answer 1

You should be understood that, for an #EJB the application server is here to takes care of the inetiation of the #EJB but also the injection of the persistence.
The configuration used is that already available in the Glassfish domain (domain/config/domain.xml) and not theses properties of glassfish-ressource.xml file.
This means, for override the first config you've to use two persistences and :
switch between them programmatically (when the both are injected).
Or use Persistence.createEntityManagerFactory( jndiDataSource2NdUnitName ).createEntityManager(); where jndiDataSource2NdUnitName is the 2nd unit name.