| Clover coverage report - Maven Clover report |
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| Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
| ExampleFilter.java | 0% | 0% | 0% | 0% |
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| 1 | /* | |
| 2 | * Copyright 2004 The Apache Software Foundation | |
| 3 | * | |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 5 | * you may not use this file except in compliance with the License. | |
| 6 | * You may obtain a copy of the License at | |
| 7 | * | |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 9 | * | |
| 10 | * Unless required by applicable law or agreed to in writing, software | |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 13 | * See the License for the specific language governing permissions and | |
| 14 | * limitations under the License. | |
| 15 | */ | |
| 16 | ||
| 17 | ||
| 18 | package filters; | |
| 19 | ||
| 20 | ||
| 21 | import java.io.IOException; | |
| 22 | import javax.servlet.Filter; | |
| 23 | import javax.servlet.FilterChain; | |
| 24 | import javax.servlet.FilterConfig; | |
| 25 | import javax.servlet.ServletContext; | |
| 26 | import javax.servlet.ServletException; | |
| 27 | import javax.servlet.ServletRequest; | |
| 28 | import javax.servlet.ServletResponse; | |
| 29 | ||
| 30 | ||
| 31 | /** | |
| 32 | * Example filter that can be attached to either an individual servlet | |
| 33 | * or to a URL pattern. This filter performs the following functions: | |
| 34 | * <ul> | |
| 35 | * <li>Attaches itself as a request attribute, under the attribute name | |
| 36 | * defined by the value of the <code>attribute</code> initialization | |
| 37 | * parameter.</li> | |
| 38 | * <li>Calculates the number of milliseconds required to perform the | |
| 39 | * servlet processing required by this request, including any | |
| 40 | * subsequently defined filters, and logs the result to the servlet | |
| 41 | * context log for this application. | |
| 42 | * </ul> | |
| 43 | * | |
| 44 | * @author Craig McClanahan | |
| 45 | * @version $Revision: 267129 $ $Date: 2004-03-18 08:40:35 -0800 (Thu, 18 Mar 2004) $ | |
| 46 | */ | |
| 47 | ||
| 48 | public final class ExampleFilter implements Filter { | |
| 49 | ||
| 50 | ||
| 51 | // ----------------------------------------------------- Instance Variables | |
| 52 | ||
| 53 | ||
| 54 | /** | |
| 55 | * The request attribute name under which we store a reference to ourself. | |
| 56 | */ | |
| 57 | private String attribute = null; | |
| 58 | ||
| 59 | ||
| 60 | /** | |
| 61 | * The filter configuration object we are associated with. If this value | |
| 62 | * is null, this filter instance is not currently configured. | |
| 63 | */ | |
| 64 | private FilterConfig filterConfig = null; | |
| 65 | ||
| 66 | ||
| 67 | // --------------------------------------------------------- Public Methods | |
| 68 | ||
| 69 | ||
| 70 | /** | |
| 71 | * Take this filter out of service. | |
| 72 | */ | |
| 73 | 0 | public void destroy() { |
| 74 | ||
| 75 | 0 | this.attribute = null; |
| 76 | 0 | this.filterConfig = null; |
| 77 | ||
| 78 | } | |
| 79 | ||
| 80 | ||
| 81 | /** | |
| 82 | * Time the processing that is performed by all subsequent filters in the | |
| 83 | * current filter stack, including the ultimately invoked servlet. | |
| 84 | * | |
| 85 | * @param request The servlet request we are processing | |
| 86 | * @param result The servlet response we are creating | |
| 87 | * @param chain The filter chain we are processing | |
| 88 | * | |
| 89 | * @exception IOException if an input/output error occurs | |
| 90 | * @exception ServletException if a servlet error occurs | |
| 91 | */ | |
| 92 | 0 | public void doFilter(ServletRequest request, ServletResponse response, |
| 93 | FilterChain chain) | |
| 94 | throws IOException, ServletException { | |
| 95 | ||
| 96 | // Store ourselves as a request attribute (if requested) | |
| 97 | 0 | if (attribute != null) |
| 98 | 0 | request.setAttribute(attribute, this); |
| 99 | ||
| 100 | // Time and log the subsequent processing | |
| 101 | 0 | long startTime = System.currentTimeMillis(); |
| 102 | 0 | chain.doFilter(request, response); |
| 103 | 0 | long stopTime = System.currentTimeMillis(); |
| 104 | 0 | filterConfig.getServletContext().log |
| 105 | (this.toString() + ": " + (stopTime - startTime) + | |
| 106 | " milliseconds"); | |
| 107 | ||
| 108 | } | |
| 109 | ||
| 110 | ||
| 111 | /** | |
| 112 | * Place this filter into service. | |
| 113 | * | |
| 114 | * @param filterConfig The filter configuration object | |
| 115 | */ | |
| 116 | 0 | public void init(FilterConfig filterConfig) throws ServletException { |
| 117 | ||
| 118 | 0 | this.filterConfig = filterConfig; |
| 119 | 0 | this.attribute = filterConfig.getInitParameter("attribute"); |
| 120 | ||
| 121 | } | |
| 122 | ||
| 123 | ||
| 124 | /** | |
| 125 | * Return a String representation of this object. | |
| 126 | */ | |
| 127 | 0 | public String toString() { |
| 128 | ||
| 129 | 0 | if (filterConfig == null) |
| 130 | 0 | return ("InvokerFilter()"); |
| 131 | 0 | StringBuffer sb = new StringBuffer("InvokerFilter("); |
| 132 | 0 | sb.append(filterConfig); |
| 133 | 0 | sb.append(")"); |
| 134 | 0 | return (sb.toString()); |
| 135 | ||
| 136 | } | |
| 137 | ||
| 138 | ||
| 139 | } | |
| 140 |
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