org.eaglei.repository.servlet
Class WithRepositoryConnection

java.lang.Object
  org.eaglei.repository.servlet.WithRepositoryConnection

All Implemented Interfaces:

javax.servlet.Filter

public class WithRepositoryConnection
extends java.lang.Object
implements javax.servlet.Filter

Give wrapped servlet a Sesame repository connection with automatic cleanup. Opens a new connection for each request and ensures it is closed at the end. WARNING: It is the servlet implementation's responsibility to commit() all changes made on the RepositoryConnection. This filter ONLY closes the connection (with a rollback if necessary), it does NOT commit anything, since it might regain control after an exception, in which case you wouldn't want any partial changes committed. XXX FIXME MAYBE: Is it worth using a pool of RepositoryConnections for efficiency? Maybe they are just too cheap to set up. Need to check if it is safe to reuse a connection after commit/rollback too. see http://commons.apache.org/pool/

Version:

$Id: $

Author:

Larry Stone

Constructor Summary

WithRepositoryConnection()

Method Summary

void	destroy() destroy
void	doFilter(javax.servlet.ServletRequest req, javax.servlet.ServletResponse resp, javax.servlet.FilterChain fc)
static org.openrdf.repository.RepositoryConnection	get(javax.servlet.ServletRequest request) Gets RepositoryConnection from where the filter stashed it.
void	init(javax.servlet.FilterConfig fc)

Methods inherited from class java.lang.Object

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

Constructor Detail

WithRepositoryConnection

public WithRepositoryConnection()

Method Detail

init

public void init(javax.servlet.FilterConfig fc)
          throws javax.servlet.ServletException

Specified by:

init in interface javax.servlet.Filter

Throws:

javax.servlet.ServletException

destroy

public void destroy()

destroy

Specified by:

destroy in interface javax.servlet.Filter

get

public static org.openrdf.repository.RepositoryConnection get(javax.servlet.ServletRequest request)

Gets RepositoryConnection from where the filter stashed it.

Parameters:

request - a ServletRequest object.

Returns:

a RepositoryConnection object.

doFilter

public void doFilter(javax.servlet.ServletRequest req,
                     javax.servlet.ServletResponse resp,
                     javax.servlet.FilterChain fc)
              throws java.io.IOException,
                     javax.servlet.ServletException

Specified by:

doFilter in interface javax.servlet.Filter

Throws:

java.io.IOException

javax.servlet.ServletException