1 // 2 // ======================================================================== 3 // Copyright (c) 1995-2013 Mort Bay Consulting Pty. Ltd. 4 // ------------------------------------------------------------------------ 5 // All rights reserved. This program and the accompanying materials 6 // are made available under the terms of the Eclipse Public License v1.0 7 // and Apache License v2.0 which accompanies this distribution. 8 // 9 // The Eclipse Public License is available at 10 // http://www.eclipse.org/legal/epl-v10.html 11 // 12 // The Apache License v2.0 is available at 13 // http://www.opensource.org/licenses/apache2.0.php 14 // 15 // You may elect to redistribute this code under either of these licenses. 16 // ======================================================================== 17 // 18 19 package org.eclipse.jetty.rewrite.handler; 20 21 import java.io.IOException; 22 23 import javax.servlet.http.HttpServletRequest; 24 import javax.servlet.http.HttpServletResponse; 25 26 import org.eclipse.jetty.http.PathMap; 27 28 /** 29 * Abstract rule that use a {@link PathMap} for pattern matching. It uses the 30 * servlet pattern syntax. 31 */ 32 public abstract class PatternRule extends Rule 33 { 34 protected String _pattern; 35 36 37 /* ------------------------------------------------------------ */ 38 public String getPattern() 39 { 40 return _pattern; 41 } 42 43 /* ------------------------------------------------------------ */ 44 /** 45 * Sets the rule pattern. 46 * 47 * @param pattern the pattern 48 */ 49 public void setPattern(String pattern) 50 { 51 _pattern = pattern; 52 } 53 54 /* ------------------------------------------------------------ */ 55 /* (non-Javadoc) 56 * @see org.eclipse.jetty.server.server.handler.rules.RuleBase#matchAndApply(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) 57 */ 58 @Override 59 public String matchAndApply(String target, HttpServletRequest request, HttpServletResponse response) throws IOException 60 { 61 if (PathMap.match(_pattern, target)) 62 { 63 return apply(target,request, response); 64 } 65 return null; 66 } 67 68 /* ------------------------------------------------------------ */ 69 /** Apply the rule to the request 70 * @param target field to attempt match 71 * @param request request object 72 * @param response response object 73 * @return The target (possible updated) 74 * @throws IOException exceptions dealing with operating on request or response objects 75 */ 76 protected abstract String apply(String target, HttpServletRequest request, HttpServletResponse response) throws IOException; 77 78 /** 79 * Returns the rule pattern. 80 */ 81 @Override 82 public String toString() 83 { 84 return super.toString()+"["+_pattern+"]"; 85 } 86 }