net.sf.click.extras.hibernate
Class SessionFilter

java.lang.Object
  net.sf.click.extras.hibernate.SessionFilter

All Implemented Interfaces:

Filter

public class SessionFilter

extends Object

implements Filter

Provides a Hibernate session filter to support the SessionContext class, closing sessions at the end of each request.

To use SessionContext configure the SessionFilter in you web application's /WEB-INF/web.xml file.

 <web-app>
   <filter>
     <filter-name>session-filter</filter-name>
     <filter-class>net.sf.click.extras.hibernate.SessionFilter</filter-class>
   </filter>

   <filter-mapping>
     <filter-name>session-filter</filter-name>
     <servlet-name>click-servlet</servlet-name>
   </filter-mapping>

   <servlet>
     <servlet-name>click-servlet</servlet-name>
   ..
 </web-app> 

The SessionFilter init() method loads the SessionContext class which in turn initializes the Hibernate runtime.

Author:

Malcolm Edgar

See Also:

SessionContext, HibernateForm

Constructor Summary

SessionFilter()

Method Summary

void	destroy()
void	doFilter(ServletRequest request, ServletResponse response, FilterChain chain) Close any user defined sessions if present.
void	init(FilterConfig filterConfig) Initialize the Hibernate Configuration and SessionFactory.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SessionFilter

public SessionFilter()

Method Detail

init

public void init(FilterConfig filterConfig)
          throws ServletException

Initialize the Hibernate Configuration and SessionFactory.

Specified by:

init in interface Filter

Parameters:

filterConfig - the filter configuration

Throws:

ServletException - if an initialization error occurs

See Also:

Filter.init(FilterConfig)

destroy

public void destroy()

Specified by:

destroy in interface Filter

See Also:

Filter.destroy()

doFilter

public void doFilter(ServletRequest request,
                     ServletResponse response,
                     FilterChain chain)
              throws IOException,
                     ServletException

Close any user defined sessions if present.

Specified by:

doFilter in interface Filter

Parameters:

request - the servlet request

response - the servlet response

chain - the filter chain

Throws:

IOException - if an I/O error occurs

ServletException - if a servlet error occurs

See Also:

Filter.doFilter(ServletRequest, ServletResponse, FilterChain)