| Line | Hits | Source |
|---|---|---|
| 1 | /* | |
| 2 | Chrysalis Web Framework [http://chrysalis.sourceforge.net] | |
| 3 | Copyright (c) 2002, 2003, 2004, Paul Strack | |
| 4 | ||
| 5 | All rights reserved. | |
| 6 | ||
| 7 | Redistribution and use in source and binary forms, with or without | |
| 8 | modification, are permitted provided that the following conditions are met: | |
| 9 | ||
| 10 | 1. Redistributions of source code must retain the above copyright notice, this | |
| 11 | list of conditions and the following disclaimer. | |
| 12 | ||
| 13 | 2. Redistributions in binary form must reproduce the above copyright notice, | |
| 14 | this list of conditions and the following disclaimer in the documentation | |
| 15 | and/or other materials provided with the distribution. | |
| 16 | ||
| 17 | 3. Neither the name of the copyright holder nor the names of its contributors | |
| 18 | may be used to endorse or promote products derived from this software without | |
| 19 | specific prior written permission. | |
| 20 | ||
| 21 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND | |
| 22 | ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
| 23 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
| 24 | DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR | |
| 25 | ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
| 26 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 27 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON | |
| 28 | ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 29 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 30 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 31 | */ | |
| 32 | ||
| 33 | package org.chwf.servlet.engine; | |
| 34 | ||
| 35 | import java.io.IOException; | |
| 36 | ||
| 37 | import javax.servlet.FilterChain; | |
| 38 | import javax.servlet.FilterConfig; | |
| 39 | import javax.servlet.ServletContext; | |
| 40 | import javax.servlet.ServletException; | |
| 41 | import javax.servlet.http.HttpServletRequest; | |
| 42 | import javax.servlet.http.HttpServletResponse; | |
| 43 | ||
| 44 | import org.chwf.resources.ResourceException; | |
| 45 | import org.chwf.resources.ResourceManager; | |
| 46 | import org.chwf.servlet.ServletData; | |
| 47 | import org.chwf.servlet.ServletUtils; | |
| 48 | import org.chwf.servlet.filter.FilterSupport; | |
| 49 | ||
| 50 | /** | |
| 51 | * A filter that initializes the Chrysalis environment. It invokes init() | |
| 52 | * during pre-processing and release() during post-processing, with guard | |
| 53 | * methods to ensure that initialization only happens once per request | |
| 54 | * (in case this filter appears more than once in the chain). | |
| 55 | * | |
| 56 | * @author <a href="mailto:pfstrack@users.sourceforge.net">Paul Strack</a> | |
| 57 | */ | |
| 58 | 14 | public class InitFilter extends FilterSupport { |
| 59 | ||
| 60 | /** The context. */ | |
| 61 | private ServletContext context; | |
| 62 | ||
| 63 | /** | |
| 64 | * Stores config. | |
| 65 | * | |
| 66 | * @param config The config. | |
| 67 | * @throws ServletException For servlet exceptions. | |
| 68 | */ | |
| 69 | public void init(FilterConfig config) throws ServletException { | |
| 70 | 14 | this.context = config.getServletContext(); |
| 71 | 14 | } |
| 72 | ||
| 73 | /** | |
| 74 | * Process filter. | |
| 75 | * | |
| 76 | * @param request The request. | |
| 77 | * @param response The response. | |
| 78 | * @param chain The filter chain. | |
| 79 | * @throws ServletException For servlet exceptions. | |
| 80 | * @throws IOException For IO exceptions. | |
| 81 | */ | |
| 82 | public void doHttpFilter( | |
| 83 | HttpServletRequest request, | |
| 84 | HttpServletResponse response, | |
| 85 | FilterChain chain) | |
| 86 | throws IOException, ServletException { | |
| 87 | ||
| 88 | // In case this method is invoked more than once in the request chain: | |
| 89 | 8 | boolean isTopOfChain = !ServletData.isInitialized(); |
| 90 | ||
| 91 | try { | |
| 92 | 8 | if (isTopOfChain) { |
| 93 | 8 | init(context, request, response); |
| 94 | } | |
| 95 | ||
| 96 | 8 | chain.doFilter(request, response); |
| 97 | 7 | } finally { |
| 98 | 1 | if (isTopOfChain) { |
| 99 | 8 | release(request); |
| 100 | } | |
| 101 | } | |
| 102 | 7 | } |
| 103 | ||
| 104 | /** | |
| 105 | * Initialize the Chrysalis environment. | |
| 106 | * | |
| 107 | * @param context The servlet context. | |
| 108 | * @param request The request. | |
| 109 | * @param response The response. | |
| 110 | */ | |
| 111 | public static void init( | |
| 112 | ServletContext context, | |
| 113 | HttpServletRequest request, | |
| 114 | HttpServletResponse response) { | |
| 115 | ||
| 116 | 464 | ServletData.init(context, request, response); |
| 117 | 464 | ServletData.retrieveErrorDataFromSession(); |
| 118 | 464 | ResourceManager.init(); |
| 119 | 464 | } |
| 120 | ||
| 121 | /** | |
| 122 | * Release the Chrysalis environment. | |
| 123 | * | |
| 124 | * @param request The request. | |
| 125 | * @throws ServletException For release errors. | |
| 126 | */ | |
| 127 | public static void release(HttpServletRequest request) | |
| 128 | throws ServletException { | |
| 129 | 464 | Throwable error = ServletUtils.retrieveError(request); |
| 130 | try { | |
| 131 | 464 | ResourceManager.release(error); |
| 132 | 464 | } catch (ResourceException ex) { |
| 133 | 0 | throw new ServletException(ex); |
| 134 | } finally { | |
| 135 | 0 | ServletData.release(); |
| 136 | } | |
| 137 | 464 | } |
| 138 | } |
|
this report was generated by version 1.0.5 of jcoverage. |
copyright © 2003, jcoverage ltd. all rights reserved. |