Probleme with JPA out of container and Ejb3Configuration use

altus34 · **Joined:** Mon Jun 20, 2005 11:38 am **Posts:** 7

Hi,

I try for my test to use my entityManager out of container.

For that i instanciate my entityManagerFactory through the Ejb3Configuration helper.

All it's ok (annoted classes found, connection ok ...) but not my transactionType.

i try to add the property "javax.persistence.transactionType" ->"RESOURCE_LOCAL" without success

After inspection of sources it's seem this property is available through the configure() method who need the name of a file configuration.

But i don't want that a want define my entityManager only programaticly.

Is'it possible ?

Thank for your help ;)

altus34 · **Joined:** Mon Jun 20, 2005 11:38 am **Posts:** 7

Ok so after some investigations.

Code:

      Ejb3Configuration cfg = new Ejb3Configuration();
       cfg.addProperties(getProperties());
       cfg.addAnnotatedClass(User.class);
       entityManagerFactory = cfg.buildEntityManagerFactory();

    private static Properties getProperties() {
        Properties properties = new Properties();
        properties.setProperty(Environment.DRIVER, DATABASE_DRIVER_CLASS);
        properties.setProperty(Environment.URL, MEMORY_DATABASE_URL);
        properties.setProperty(Environment.USER, USERNAME);
        properties.setProperty(Environment.PASS, PASSWORD);
        properties.setProperty(Environment.DIALECT, DBDIALECT);
        properties.put(Environment.SHOW_SQL, "true");
        properties.put(Environment.FLUSH_BEFORE_COMPLETION, "false");
        properties.put(Environment.TRANSACTION_STRATEGY,   PersistenceUnitTransactionType.RESOURCE_LOCAL);
        properties.put(Environment.HBM2DDL_AUTO, "create");
        return properties;
    }

This code don't work because my entityManagerFactory doesn't have TransactionStrategy attached.

But if i use this code

Code:

Ejb3Configuration cfg = new Ejb3Configuration();
            cfg.addProperties(getProperties());
            cfg.addAnnotatedClass(User.class);
            cfg.configure("hibernate.cfg.xml");
            entityManagerFactory = cfg.buildEntityManagerFactory();

with a empty hibernate.cfg.xml config file like that ...

Code:

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
<session-factory>
</session-factory>
</hibernate-configuration>

the entityManagerFactory have a transaction manager attached !!!!

You can reply me hey guys all is ok good but not really. Because we can see the cfg.configure("hibernate.cfg.xml") don't use a resource or an input stream but a string. So the location of my file must be in my source directory but i dont want that. I want to use my file in my test directory tree.

So i've miss something or the Ejb3Configuration file have some issue ?

Thank's a lot for any informations on this point.

emmanuel · **Posted:** Mon Nov 13, 2006 6:38 pm

Environment.TRANSACTION_STRATEGY refers to the TransactionFactory implementation, this is not the property to define the JPA transaction-type

altus34 · **Joined:** Mon Jun 20, 2005 11:38 am **Posts:** 7

Hi emmanuel,

When i read your comment i understand that my code :

Code:

properties.put(Environment.TRANSACTION_STRATEGY,   PersistenceUnitTransactionType.RESOURCE_LOCAL); 

is no good because PersistenceUnitTransactionType.RESOURCE_LOCAL is jpa transaction type and not hibernate !!!.

Which configuration information must be in place of PersistenceUnitTransactionType.RESOURCE_LOCAL ?

Why now it's working and why this propertiy is enabled if i give a empty config file ?

Another strange configuration issue in the class InjectionSettingsFactory.

When i used the static call to the method

Code:

protected ConnectionProvider createConnectionProvider(Properties properties) {
      return ConnectionProviderFactory.newConnectionProvider( properties, connectionProviderInjectionData );
   } 

the code :

Code:

public static ConnectionProvider newConnectionProvider(Properties properties, Map connectionProviderInjectionData) throws HibernateException {
      ConnectionProvider connections;
      String providerClass = properties.getProperty(Environment.CONNECTION_PROVIDER);
      if ( providerClass!=null ) {
         try {
            log.info("Initializing connection provider: " + providerClass);
            connections = (ConnectionProvider) ReflectHelper.classForName(providerClass).newInstance();
         }
         catch (Exception e) {
            log.fatal("Could not instantiate connection provider", e);
            throw new HibernateException("Could not instantiate connection provider: " + providerClass);
         }
      }

alway thow and exception

Code:

java.lang.ClassCastException: org.hibernate.ejb.connection.InjectedDataSourceConnectionProvider
   at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:73)

In debug mode the providerClass is by default an
org.hibernate.ejb.connection.InjectedDataSourceConnectionProvider

who is a ConnectionProvider !!! this is totaly crazy when i evaluate the expression no error is thrown but when i step over error is reased !!!

I miss again something ?

Thank's

emmanuel · **Posted:** Tue Nov 14, 2006 11:19 am

I don't know about the CCE

For the first issue, configure() does trigger the default value initialization. Open a JIRa issue asking for the ability to get the default values wo calling configure().

altus34 · **Joined:** Mon Jun 20, 2005 11:38 am **Posts:** 7

Hi Emmanuel thank's for your respons, i Open a Jira issue for the first issue.

For the second the issue is resolved. The error is when i try to configure JPA + Hibernate through Spring ;)

The option :

Code:

<property name="loadTimeWeaver">
            <bean class="org.springframework.instrument.classloading.SimpleLoadTimeWeaver"/>
        </property>

As a impact on the classLoading ;( and generate two ClassCastException with hibernate.

One on the Ejb3Configuration.java line 407

Code:

try {
         saxReader.setFeature( "http://apache.org/xml/features/validation/schema", true );

And a another in ConnectionProviderFactory line 73

Code:

String providerClass = properties.getProperty(Environment.CONNECTION_PROVIDER);
      if ( providerClass!=null ) {
         try {
            log.info("Initializing connection provider: " + providerClass);
            connections = (ConnectionProvider) ReflectHelper.classForName(providerClass).newInstance();
         }
         catch (Exception e) {
            log.fatal("Could not instantiate connection provider", e);
            throw new HibernateException("Could not instantiate connection provider: " + providerClass);
         }
      }

So i need to remove this option and all is ok ;)

Thank's a lot Emmanuel for your patience.