org.eclipse.jetty.rewrite.handler.PatternRule Maven / Gradle / Ivy
//
// ========================================================================
// Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
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//
package org.eclipse.jetty.rewrite.handler;
import java.io.IOException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.eclipse.jetty.http.PathMap;
/**
* Abstract rule that use a {@link PathMap} for pattern matching. It uses the
* servlet pattern syntax.
*/
public abstract class PatternRule extends Rule
{
protected String _pattern;
/* ------------------------------------------------------------ */
public String getPattern()
{
return _pattern;
}
/* ------------------------------------------------------------ */
/**
* Sets the rule pattern.
*
* @param pattern the pattern
*/
public void setPattern(String pattern)
{
_pattern = pattern;
}
/* ------------------------------------------------------------ */
/* (non-Javadoc)
* @see org.eclipse.jetty.server.server.handler.rules.RuleBase#matchAndApply(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
*/
public String matchAndApply(String target, HttpServletRequest request, HttpServletResponse response) throws IOException
{
if (PathMap.match(_pattern, target))
{
return apply(target,request, response);
}
return null;
}
/* ------------------------------------------------------------ */
/** Apply the rule to the request
* @param target field to attempt match
* @param request request object
* @param response response object
* @return The target (possible updated)
* @throws IOException exceptions dealing with operating on request or response objects
*/
protected abstract String apply(String target, HttpServletRequest request, HttpServletResponse response) throws IOException;
/**
* Returns the rule pattern.
*/
public String toString()
{
return super.toString()+"["+_pattern+"]";
}
}
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