Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit

I m using Hibernate2.0
and Oracle 9i
I m getting this error,
java.lang.NullPointerException
at com.gltv3.common.HibernateUtil.getSession(HibernateUtil.java:46)
at
com.gltv3.DAO.RetriveApplMessageDAO.getMessage(RetriveApplMessageDAO.java:30)
at
com.gltv3.framework.RetriveApplMessages.getMessage(RetriveApplMessages.java:31)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at
org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:276)
at
org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:196)

Code for HibernateUtil Class (method getSession)
public class HibernateUtil {
private static SessionFactory sessionFactory;

static {
try {
sessionFactory = new Configuration().configure()
.buildSessionFactory();
}
catch (HibernateException hne) {
hne.getStackTrace();
}
}

/*
* As a Hibernate Session is non-threadsafe, ThreadLocal is used
* to hold the session for the current executing thread.
*/
public static Map sessionMap = new HashMap();
//public static final Map sessionMap =
Collections.synchronizedMap(new HashMap());
/* (non-Javadoc)
*
*/
public static Session getSession(String sessionId) throws
HibernateException{

Session s = (Session) sessionMap.get(sessionId);
try {
if (s == null || !s.isOpen() || !s.isConnected()) {
s = sessionFactory.openSession();
sessionMap.put(sessionId,s);
System.out.println("Opening New Hibernate session......");
}
}
catch (HibernateException hne) {
hne.getStackTrace();
}

return s;
}
}

Code for hibernate.cfg.xml ,
<?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>

<!-- Local connection properties -->

<property name="connection.url">
jdbc:oracle:thin:@192.168.1.212:1521:tracp
</property>

<property name="hibernate.connection.driver_class">
oracle.jdbc.OracleDriver
</property>

<property name="hibernate.transaction.factory_class">
net.sf.hibernate.transaction.JDBCTransactionFactory
<!--org.apache.commons.dbcp.BasicDataSourceFactory-->
</property>

<property name="hibernate.connection.username">exldemo</property>
<property name="hibernate.connection.password">exldemo</property>
<property name="hibernate.connection.pool_size">25</property>
<property name="hibernate.c3p0.min_size">1</property>
<property name="hibernate.c3p0.max_size">50</property>
<property name="hibernate.c3p0.timeout">200</property>
<property name="hibernate.c3p0.max_statements">10000</property>
<property name="hibernate.c3p0.idle_test_period">3000</property>
<property
name="hibernate.cglib.use_reflection_optimizer">true</property>
<property
name="dialect">net.sf.hibernate.dialect.OracleDialect</property>
<property name="hibernate.show_sql">true</property>


<mapping resource="/com/gltv3/hibernate/ApplMessage.hbm.xml"/>

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

And I have hibernate2.jar file in my class path :
Please help me to solve this problem.

Thanks & Regards,
Gazy

Most likely you have problem with hibernateSession initialization. Your exception handling is bad and block

does not make any sense.

Rewrite your static initializer like this:

and if sessionFactory is not created (I guess this is the most likely case) you will see why it fails.

On a side note your getSession() method just eats up HibernateException without even logging exception which is poor way to code.