org.chwf.servlet.filter
Class FilterChainImpl

java.lang.Object
  |
  +--org.chwf.servlet.filter.FilterChainImpl

All Implemented Interfaces:

javax.servlet.FilterChain

public class FilterChainImpl

extends java.lang.Object

implements javax.servlet.FilterChain

Implementation of FilterChain.

This class duplicates the filter functionality of the Servlet 2.3 API.

Author:

Paul Strack

Constructor Summary

FilterChainImpl(javax.servlet.Filter[] filters)
Constructor.

Method Summary

void	doChain(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, javax.servlet.Filter terminator) Execute the chain.
void	doFilter(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response) Causes the next filter in the chain to be invoked, or if the calling filter is the last filter in the chain, causes the resource at the end of the chain to be invoked.

Methods inherited from class java.lang.Object

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

Constructor Detail

FilterChainImpl

public FilterChainImpl(javax.servlet.Filter[] filters)

Constructor.

Parameters:

filters - The filters in the chain.

Method Detail

doChain

public void doChain(javax.servlet.ServletRequest request,
                    javax.servlet.ServletResponse response,
                    javax.servlet.Filter terminator)
             throws java.io.IOException,
                    javax.servlet.ServletException

Execute the chain. When the chain is complete, the terminator filter is invoked. This terminator filter should invoke the resource at the end of the chain.

Parameters:

request - The request to pass along the chain.

response - The response to pass along the chain.

terminator - A filter that invokes the final resource invoked once the chain is complete.

Throws:

java.io.IOException - For I/O errors.

javax.servlet.ServletException - For servlet errors.

doFilter

public void doFilter(javax.servlet.ServletRequest request,
                     javax.servlet.ServletResponse response)
              throws java.io.IOException,
                     javax.servlet.ServletException

Causes the next filter in the chain to be invoked, or if the calling filter is the last filter in the chain, causes the resource at the end of the chain to be invoked.

Specified by:

doFilter in interface javax.servlet.FilterChain

Parameters:

request - The request to pass along the chain.

response - The response to pass along the chain.

Throws:

java.io.IOException - For IO errors.

javax.servlet.ServletException - For servlet errors.