Source Code Cross Referenced for StandardEngineValve.java in  » Sevlet-Container » apache-tomcat-6.0.14 » org » apache » catalina » core » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Sevlet Container » apache tomcat 6.0.14 » org.apache.catalina.core 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Licensed to the Apache Software Foundation (ASF) under one or more
003:         * contributor license agreements.  See the NOTICE file distributed with
004:         * this work for additional information regarding copyright ownership.
005:         * The ASF licenses this file to You under the Apache License, Version 2.0
006:         * (the "License"); you may not use this file except in compliance with
007:         * the License.  You may obtain a copy of the License at
008:         * 
009:         *      http://www.apache.org/licenses/LICENSE-2.0
010:         * 
011:         * Unless required by applicable law or agreed to in writing, software
012:         * distributed under the License is distributed on an "AS IS" BASIS,
013:         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014:         * See the License for the specific language governing permissions and
015:         * limitations under the License.
016:         */
017:
018:        package org.apache.catalina.core;
019:
020:        import java.io.IOException;
021:
022:        import javax.servlet.ServletException;
023:        import javax.servlet.http.HttpServletResponse;
024:
025:        import org.apache.catalina.CometEvent;
026:        import org.apache.catalina.Host;
027:        import org.apache.catalina.connector.Request;
028:        import org.apache.catalina.connector.Response;
029:        import org.apache.catalina.util.StringManager;
030:        import org.apache.catalina.valves.ValveBase;
031:
032:        /**
033:         * Valve that implements the default basic behavior for the
034:         * <code>StandardEngine</code> container implementation.
035:         * <p>
036:         * <b>USAGE CONSTRAINT</b>:  This implementation is likely to be useful only
037:         * when processing HTTP requests.
038:         *
039:         * @author Craig R. McClanahan
040:         * @version $Revision: 467222 $ $Date: 2006-10-24 05:17:11 +0200 (mar., 24 oct. 2006) $
041:         */
042:
043:        final class StandardEngineValve extends ValveBase {
044:
045:            // ----------------------------------------------------- Instance Variables
046:
047:            /**
048:             * The descriptive information related to this implementation.
049:             */
050:            private static final String info = "org.apache.catalina.core.StandardEngineValve/1.0";
051:
052:            /**
053:             * The string manager for this package.
054:             */
055:            private static final StringManager sm = StringManager
056:                    .getManager(Constants.Package);
057:
058:            // ------------------------------------------------------------- Properties
059:
060:            /**
061:             * Return descriptive information about this Valve implementation.
062:             */
063:            public String getInfo() {
064:
065:                return (info);
066:
067:            }
068:
069:            // --------------------------------------------------------- Public Methods
070:
071:            /**
072:             * Select the appropriate child Host to process this request,
073:             * based on the requested server name.  If no matching Host can
074:             * be found, return an appropriate HTTP error.
075:             *
076:             * @param request Request to be processed
077:             * @param response Response to be produced
078:             * @param valveContext Valve context used to forward to the next Valve
079:             *
080:             * @exception IOException if an input/output error occurred
081:             * @exception ServletException if a servlet error occurred
082:             */
083:            public final void invoke(Request request, Response response)
084:                    throws IOException, ServletException {
085:
086:                // Select the Host to be used for this Request
087:                Host host = request.getHost();
088:                if (host == null) {
089:                    response.sendError(HttpServletResponse.SC_BAD_REQUEST, sm
090:                            .getString("standardEngine.noHost", request
091:                                    .getServerName()));
092:                    return;
093:                }
094:
095:                // Ask this Host to process this request
096:                host.getPipeline().getFirst().invoke(request, response);
097:
098:            }
099:
100:            /**
101:             * Process Comet event.
102:             *
103:             * @param request Request to be processed
104:             * @param response Response to be produced
105:             * @param valveContext Valve context used to forward to the next Valve
106:             *
107:             * @exception IOException if an input/output error occurred
108:             * @exception ServletException if a servlet error occurred
109:             */
110:            public final void event(Request request, Response response,
111:                    CometEvent event) throws IOException, ServletException {
112:
113:                // Ask this Host to process this request
114:                request.getHost().getPipeline().getFirst().event(request,
115:                        response, event);
116:
117:            }
118:
119:        }
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