Source Code Cross Referenced for TurbineNamingService.java in  » Web-Framework » TURBINE » org » apache » turbine » services » naming » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Web Framework » TURBINE » org.apache.turbine.services.naming 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        package org.apache.turbine.services.naming;
002:
003:        /*
004:         * Licensed to the Apache Software Foundation (ASF) under one
005:         * or more contributor license agreements.  See the NOTICE file
006:         * distributed with this work for additional information
007:         * regarding copyright ownership.  The ASF licenses this file
008:         * to you under the Apache License, Version 2.0 (the
009:         * "License"); you may not use this file except in compliance
010:         * with the License.  You may obtain a copy of the License at
011:         *
012:         *   http://www.apache.org/licenses/LICENSE-2.0
013:         *
014:         * Unless required by applicable law or agreed to in writing,
015:         * software distributed under the License is distributed on an
016:         * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017:         * KIND, either express or implied.  See the License for the
018:         * specific language governing permissions and limitations
019:         * under the License.
020:         */
021:
022:        import java.util.HashMap;
023:        import java.util.Iterator;
024:        import java.util.Map;
025:        import java.util.Properties;
026:
027:        import javax.naming.Context;
028:        import javax.naming.InitialContext;
029:
030:        import org.apache.commons.configuration.Configuration;
031:
032:        import org.apache.commons.logging.Log;
033:        import org.apache.commons.logging.LogFactory;
034:
035:        import org.apache.turbine.Turbine;
036:        import org.apache.turbine.services.InitializationException;
037:        import org.apache.turbine.services.TurbineBaseService;
038:        import org.apache.turbine.util.RunData;
039:
040:        /**
041:         * This class is the default implementation of NamingService, which
042:         * provides JNDI naming contexts.
043:         *
044:         * @author <a href="mailto:greg@shwoop.com">Greg Ritter</a>
045:         * @author <a href="mailto:colin.chalmers@maxware.nl">Colin Chalmers</a>
046:         * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a>
047:         * @version $Id: TurbineNamingService.java 534527 2007-05-02 16:10:59Z tv $
048:         */
049:        public class TurbineNamingService extends TurbineBaseService implements 
050:                NamingService {
051:            /** Logging */
052:            private static Log log = LogFactory
053:                    .getLog(TurbineNamingService.class);
054:
055:            /**
056:             * A global Map of Property objects which are initialised using
057:             * parameters from the ResourcesFile
058:             */
059:            private Map contextPropsList = null;
060:
061:            /** All initial contexts known to this service */
062:            private Map initialContexts = new HashMap();
063:
064:            /**
065:             * Called the first time the Service is used.<br>
066:             *
067:             */
068:            public void init() throws InitializationException {
069:                // Context properties are specified in lines in the properties
070:                // file that begin with "context.contextname.", allowing
071:                // multiple named contexts to be used.  Everything after the
072:                // "contextname."  is the name of the property that will be
073:                // used by the InitialContext class to create a new context
074:                // instance.
075:
076:                Configuration conf = Turbine.getConfiguration();
077:                try {
078:                    contextPropsList = new HashMap();
079:
080:                    for (Iterator contextKeys = conf.subset("context")
081:                            .getKeys(); contextKeys.hasNext();) {
082:                        String key = (String) contextKeys.next();
083:                        int end = key.indexOf(".");
084:
085:                        if (end == -1) {
086:                            continue;
087:                        }
088:
089:                        String contextName = key.substring(0, end);
090:                        Properties contextProps = null;
091:
092:                        if (contextPropsList.containsKey(contextName)) {
093:                            contextProps = (Properties) contextPropsList
094:                                    .get(contextName);
095:                        } else {
096:                            contextProps = new Properties();
097:                        }
098:
099:                        contextProps.put(key.substring(end + 1), conf
100:                                .getString(key));
101:
102:                        contextPropsList.put(contextName, contextProps);
103:                    }
104:
105:                    for (Iterator contextPropsKeys = contextPropsList.keySet()
106:                            .iterator(); contextPropsKeys.hasNext();) {
107:                        String key = (String) contextPropsKeys.next();
108:                        Properties contextProps = (Properties) contextPropsList
109:                                .get(key);
110:                        InitialContext context = new InitialContext(
111:                                contextProps);
112:                        initialContexts.put(key, context);
113:                    }
114:
115:                    setInit(true);
116:                } catch (Exception e) {
117:                    log.error("Failed to initialize JDNI contexts!", e);
118:
119:                    throw new InitializationException(
120:                            "Failed to initialize JDNI contexts!");
121:                }
122:            }
123:
124:            /**
125:             * Places the contexts defined in the TurbineResources instance
126:             * (if any) into the data.contexts Map.
127:             *
128:             * @param data The RunData object for the current request.
129:             * @exception InitializationException, if there was a problem
130:             * during initialization.
131:             * @deprecated This should never have been here. No replacement.
132:             */
133:            public void init(RunData data) throws InitializationException {
134:                try {
135:                    if (contextPropsList == null) {
136:                        init();
137:                    }
138:
139:                    for (Iterator it = contextPropsList.keySet().iterator(); it
140:                            .hasNext();) {
141:                        String key = (String) it.next();
142:                        Properties contextProps = (Properties) contextPropsList
143:                                .get(key);
144:                        InitialContext context = new InitialContext(
145:                                contextProps);
146:                        data.getJNDIContexts().put(key, context);
147:                    }
148:                } catch (Exception e) {
149:                    log.error("Failed to initialize JDNI contexts!", e);
150:
151:                    throw new InitializationException(
152:                            "Failed to initialize JDNI contexts!");
153:                }
154:            }
155:
156:            /**
157:             * Return the Context with the specified name.  The Context is
158:             * constructed using the properties for the context with the
159:             * specified name; ie. those properties that start with
160:             * "services.servicename.properties.name.".
161:             *
162:             * @param contextName The name of the context.
163:             * @return The context with the specified name, or null if no
164:             * context exists with that name.
165:             */
166:            public Context getContext(String contextName) {
167:                // Get just the properties for the context with the specified
168:                // name.
169:                Properties contextProps = null;
170:
171:                if (contextPropsList.containsKey(contextName)) {
172:                    contextProps = (Properties) contextPropsList
173:                            .get(contextName);
174:                } else {
175:                    contextProps = new Properties();
176:                }
177:
178:                // Construct a new context with the properties.
179:                try {
180:                    return new InitialContext(contextProps);
181:                } catch (Exception e) {
182:                    return null;
183:                }
184:            }
185:        }
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