HibernateDaoSupport的源码

package org.springframework.orm.hibernate3.support;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;

import org.springframework.dao.DataAccessException;
import org.springframework.dao.DataAccessResourceFailureException;
import org.springframework.dao.support.DaoSupport;
import org.springframework.orm.hibernate3.HibernateTemplate;
import org.springframework.orm.hibernate3.SessionFactoryUtils;

public abstract class HibernateDaoSupport extends DaoSupport {

private HibernateTemplate hibernateTemplate;

public final void setSessionFactory(SessionFactory sessionFactory) {
this.hibernateTemplate = createHibernateTemplate(sessionFactory);
}

protected HibernateTemplate createHibernateTemplate(SessionFactory sessionFactory) {
return new HibernateTemplate(sessionFactory);
}

public final SessionFactory getSessionFactory() {
return (this.hibernateTemplate != null ? this.hibernateTemplate.getSessionFactory() : null);
}

public final void setHibernateTemplate(HibernateTemplate hibernateTemplate) {
this.hibernateTemplate = hibernateTemplate;
}

public final HibernateTemplate getHibernateTemplate() {
return this.hibernateTemplate;
}

protected final void checkDaoConfig() {
if (this.hibernateTemplate == null) {
throw new IllegalArgumentException("'sessionFactory' or 'hibernateTemplate' is required");
}
}

protected final Session getSession()
throws DataAccessResourceFailureException, IllegalStateException {

return getSession(this.hibernateTemplate.isAllowCreate());
}

protected final Session getSession(boolean allowCreate)
throws DataAccessResourceFailureException, IllegalStateException {

return (!allowCreate ?
SessionFactoryUtils.getSession(getSessionFactory(), false) :
SessionFactoryUtils.getSession(
getSessionFactory(),
this.hibernateTemplate.getEntityInterceptor(),
this.hibernateTemplate.getJdbcExceptionTranslator()));
}

protected final DataAccessException convertHibernateAccessException(HibernateException ex) {
return this.hibernateTemplate.convertHibernateAccessException(ex);
}

protected final void releaseSession(Session session) {
SessionFactoryUtils.releaseSession(session, getSessionFactory());
}

}