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Hibernate version: 3.x
Mapping documents:
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd">
<hibernate-configuration>
<session-factory>
<!-- Don't forget to copy your JDBC driver to the lib/ directory! -->
<!-- Settings for a local MySQL database. -->
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://localhost:3306/employeecatalog</property>
<property name="connection.username">root</property>
<property name="connection.password">root</property>
<!--
Use the C3P0 connection pool.
<property name="c3p0.min_size">3</property>
<property name="c3p0.max_size">5</property>
<property name="c3p0.timeout">1800</property>
-->
<!-- Use the Hibernate built-in pool for tests. -->
<property name="connection.pool_size">3</property>
<!-- Print SQL to stdout. -->
<property name="show_sql">false</property>
<!-- CityCatalog mapping files. -->
<mapping resource="hibernateproject/Employee.hbm.xml"/>
</session-factory>
</hibernate-configuration>
package hibernateproject;
import org.hibernate.*;
import org.hibernate.cfg.Configuration;
import org.apache.commons.logging.*;
//import org.hibernate.classic.*;
import javax.naming.*;
/**
* Basic Hibernate helper class, handles SessionFactory, Session and Transaction.
* <p>
* Uses a static initializer for the initial SessionFactory creation
* and holds Session and Transactions in thread local variables. All
* exceptions are wrapped in an unchecked InfrastructureException.
*
* @author christian@hibernate.org
*/
public class HibernateUtil {
private static Log log = LogFactory.getLog(HibernateUtil.class);
private static Configuration configuration;
private static SessionFactory sessionFactory;
private static final ThreadLocal threadSession = new ThreadLocal();
private static final ThreadLocal threadTransaction = new ThreadLocal();
private static final ThreadLocal threadInterceptor = new ThreadLocal();
// Create the initial SessionFactory from the default configuration files
static {
try {
configuration = new Configuration();
System.out.println("----------------------------HibernateUtil.java-----------------------");
sessionFactory = configuration.configure().buildSessionFactory();
System.out.println("----------------------------HibernateUtil.java-----------------------");
// We could also let Hibernate bind it to JNDI:
// configuration.configure().buildSessionFactory()
} catch (Throwable ex) {
// We have to catch Throwable, otherwise we will miss
// NoClassDefFoundError and other subclasses of Error
log.error("Building SessionFactory failed.", ex);
throw new ExceptionInInitializerError(ex);
}
}
/**
* Returns the SessionFactory used for this static class.
*
* @return SessionFactory
*/
public static SessionFactory getSessionFactory() {
/* Instead of a static variable, use JNDI:
SessionFactory sessions = null;
try {
Context ctx = new InitialContext();
String jndiName = "java:hibernate/HibernateFactory";
sessions = (SessionFactory)ctx.lookup(jndiName);
} catch (NamingException ex) {
throw new InfrastructureException(ex);
}
return sessions;
*/
return sessionFactory;
}
/**
* Returns the original Hibernate configuration.
*
* @return Configuration
*/
public static Configuration getConfiguration() {
return configuration;
}
/**
* Rebuild the SessionFactory with the static Configuration.
*
*/
public static void rebuildSessionFactory() throws InfrastructureException {
synchronized (sessionFactory) {
try {
sessionFactory = getConfiguration().buildSessionFactory();
} catch (Exception ex) {
throw new InfrastructureException(ex);
}
}
}
/**
* Rebuild the SessionFactory with the given Hibernate Configuration.
*
* @param cfg
*/
public static void rebuildSessionFactory(Configuration cfg) throws
InfrastructureException {
synchronized (sessionFactory) {
try {
sessionFactory = cfg.buildSessionFactory();
configuration = cfg;
} catch (Exception ex) {
throw new InfrastructureException(ex);
}
}
}
/**
* Retrieves the current Session local to the thread.
* <p/>
* If no Session is open, opens a new Session for the running thread.
*
* @return Session
*/
public static Session getSession() throws InfrastructureException {
Session s = (Session) threadSession.get();
try {
if (s == null) {
log.debug("Opening new Session for this thread.");
if (getInterceptor() != null) {
log.debug("Using interceptor: " + getInterceptor().getClass());
s = getSessionFactory().openSession(getInterceptor());
} else {
s = getSessionFactory().openSession();
}
threadSession.set(s);
}
} catch (HibernateException ex) {
throw new InfrastructureException(ex);
}
return s;
}
/**
* Closes the Session local to the thread.
*/
public static void closeSession() throws InfrastructureException {
try {
System.out.println("1-------------------------------------------------");
Session s = (Session) threadSession.get();
threadSession.set(null);
if (s != null && s.isOpen()) {
log.debug("Closing Session of this thread.");
s.close();
}
System.out.println("2-------------------------------------------------");
} catch (HibernateException ex) {
throw new InfrastructureException(ex);
}
}
/**
* Start a new database transaction.
*/
public static void beginTransaction() throws InfrastructureException {
Transaction tx = (Transaction) threadTransaction.get();
try {
System.out.println("1--------------------in the Begin Transaction method-------");
if (tx == null) {
System.out.println("2--------------------in the Begin Transaction method-------");
log.debug("Starting new database transaction in this thread.");
tx = getSession().beginTransaction();
threadTransaction.set(tx);
}
} catch (HibernateException ex) {
throw new InfrastructureException(ex);
}
}
/**
* Commit the database transaction.
*/
public static void commitTransaction() throws InfrastructureException {
Transaction tx = (Transaction) threadTransaction.get();
try {
if (tx != null && !tx.wasCommitted()
&& !tx.wasRolledBack()) {
log.debug("Committing database transaction of this thread.");
tx.commit();
}
threadTransaction.set(null);
} catch (HibernateException ex) {
rollbackTransaction();
throw new InfrastructureException(ex);
}
}
/**
* Commit the database transaction.
*/
public static void rollbackTransaction() throws InfrastructureException {
Transaction tx = (Transaction) threadTransaction.get();
try {
threadTransaction.set(null);
if (tx != null && !tx.wasCommitted() && !tx.wasRolledBack()) {
log.debug(
"Tyring to rollback database transaction of this thread.");
tx.rollback();
}
} catch (HibernateException ex) {
throw new InfrastructureException(ex);
} finally {
closeSession();
}
}
/**
* Reconnects a Hibernate Session to the current Thread.
*
* @param session The Hibernate Session to be reconnected.
*/
public static void reconnect(Session session) throws
InfrastructureException {
try {
//session.reconnect();
//threadSession.set(session);
} catch (HibernateException ex) {
throw new InfrastructureException(ex);
}
}
/**
* Disconnect and return Session from current Thread.
*
* @return Session the disconnected Session
*/
public static Session disconnectSession() throws InfrastructureException {
Session session = getSession();
try {
threadSession.set(null);
if (session.isConnected() && session.isOpen()) {
session.disconnect();
}
} catch (HibernateException ex) {
throw new InfrastructureException(ex);
}
return session;
}
/**
* Register a Hibernate interceptor with the current thread.
* <p>
* Every Session opened is opened with this interceptor after
* registration. Has no effect if the current Session of the
* thread is already open, effective on next close()/getSession().
*/
public static void registerInterceptor(Interceptor interceptor) {
threadInterceptor.set(interceptor);
}
private static Interceptor getInterceptor() {
Interceptor interceptor =
(Interceptor) threadInterceptor.get();
return interceptor;
}
}
Full stack trace of any exception that occurs:
javax.servlet.ServletException: Servlet execution threw an exception
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:190)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2347)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1027)
at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1125)
at java.lang.Thread.run(Thread.java:534)
root cause
java.lang.NoClassDefFoundError
at hibernateproject.EmployeeAction.execute(EmployeeAction.java:63)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:190)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2347)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1027)
at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1125)
at java.lang.Thread.run(Thread.java:534)
Name and version of the database you are using:mysql4.1
The generated SQL (show_sql=true):
When control reached at line
sessionFactory = configuration.configure().buildSessionFactory();
it throw exception
that is given help
Thanx in advance
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