/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.rewrite;
import javax.servlet.FilterChain;
import com.caucho.config.ConfigException;
import com.caucho.config.Configurable;
import com.caucho.server.rewrite.AddHeaderFilterChain;
import com.caucho.util.L10N;
/**
* Sets a response Vary header to control caching based on input headers,
* e.g. varying depending on the Locale.
*
* <pre>
* <web-app xmlns="http://caucho.com/ns/resin"
* xmlns:resin="urn:java:com.caucho.resin">
*
* <resin:SetVary regexp="^/foo" value="Bar"/>
*
* </web-app>
* </pre>
*/
@Configurable
public class SetVary extends AbstractRewriteFilter
{
private static final L10N L = new L10N(SetVary.class);
private String _value;
/**
* Sets the Vary header
*/
public void setValue(String value)
{
_value = value;
}
// @Override
public void init()
throws ConfigException
{
if (_value == null) {
throw new ConfigException(L.l("'value' is a required attribute of '{0}'.",
getClass().getSimpleName()));
}
}
protected FilterChain createFilterChain(String uri,
String queryString,
FilterChain next)
{
return new AddHeaderFilterChain(next, "Vary", _value);
}
}