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1 package org.apache.turbine.services.naming; 2 3 /* ==================================================================== 4 * The Apache Software License, Version 1.1 5 * 6 * Copyright (c) 2001 The Apache Software Foundation. All rights 7 * reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. The end-user documentation included with the redistribution, 22 * if any, must include the following acknowledgment: 23 * "This product includes software developed by the 24 * Apache Software Foundation (http://www.apache.org/)." 25 * Alternately, this acknowledgment may appear in the software itself, 26 * if and wherever such third-party acknowledgments normally appear. 27 * 28 * 4. The names "Apache" and "Apache Software Foundation" and 29 * "Apache Turbine" must not be used to endorse or promote products 30 * derived from this software without prior written permission. For 31 * written permission, please contact apache@apache.org. 32 * 33 * 5. Products derived from this software may not be called "Apache", 34 * "Apache Turbine", nor may "Apache" appear in their name, without 35 * prior written permission of the Apache Software Foundation. 36 * 37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 40 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 41 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 43 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 44 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 45 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 46 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 47 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 48 * SUCH DAMAGE. 49 * ==================================================================== 50 * 51 * This software consists of voluntary contributions made by many 52 * individuals on behalf of the Apache Software Foundation. For more 53 * information on the Apache Software Foundation, please see 54 * <http://www.apache.org/>;. 55 */ 56 57 import java.util.Enumeration; 58 import java.util.Hashtable; 59 import java.util.Iterator; 60 import java.util.Properties; 61 import javax.naming.Context; 62 import javax.naming.InitialContext; 63 import org.apache.turbine.services.InitializationException; 64 import org.apache.turbine.services.TurbineBaseService; 65 import org.apache.turbine.services.resources.TurbineResources; 66 import org.apache.turbine.util.Log; 67 import org.apache.turbine.util.RunData; 68 69 /*** 70 * This class is the default implementation of NamingService, which 71 * provides JNDI naming contexts. 72 * 73 * @author <a href="mailto:greg@shwoop.com">Greg Ritter</a> 74 * @author <a href="mailto:colin.chalmers@maxware.nl">Colin Chalmers</a> 75 * @version $Id: TurbineNamingService.java,v 1.2 2002/07/11 16:53:25 mpoeschl Exp $ 76 */ 77 public class TurbineNamingService extends TurbineBaseService implements NamingService 78 { 79 /*** 80 * A global HashTable of Property objects which are initialised using 81 * parameters from the ResourcesFile 82 */ 83 private static Hashtable contextPropsList = null; 84 85 /*** 86 * Called the first time the Service is used.<br> 87 * 88 */ 89 public void init() throws InitializationException 90 { 91 // Context properties are specified in lines in the properties 92 // file that begin with "context.contextname.", allowing 93 // multiple named contexts to be used. Everything after the 94 // "contextname." is the name of the property that will be 95 // used by the InitialContext class to create a new context 96 // instance. 97 try 98 { 99 Iterator contextKeys = TurbineResources.getKeys("context."); 100 contextPropsList = new Hashtable(); 101 102 while (contextKeys.hasNext()) 103 { 104 String key = (String) contextKeys.next(); 105 int start = key.indexOf(".") + 1; 106 int end = key.indexOf(".", start); 107 String contextName = key.substring(start, end); 108 Properties contextProps = null; 109 110 if (contextPropsList.containsKey(contextName)) 111 { 112 contextProps = (Properties) 113 contextPropsList.get(contextName); 114 } 115 else 116 { 117 contextProps = new Properties(); 118 } 119 120 contextProps.put( 121 key.substring(end + 1),TurbineResources.getString(key)); 122 123 contextPropsList.put(contextName, contextProps); 124 } 125 126 setInit(true); 127 } 128 catch (Exception e) 129 { 130 Log.error("Failed to initialize JDNI contexts!", e); 131 132 throw new InitializationException( 133 "Failed to initialize JDNI contexts!"); 134 } 135 } 136 137 /*** 138 * Places the contexts defined in the TurbineResources instance 139 * (if any) into the data.contexts Hashtable. 140 * 141 * @param data The RunData object for the current request. 142 * @exception InitializationException, if there was a problem 143 * during initialization. 144 */ 145 public void init(RunData data) throws InitializationException 146 { 147 try 148 { 149 if (contextPropsList == null) 150 { 151 init(); 152 } 153 154 Enumeration contextPropsKeys = contextPropsList.keys(); 155 while (contextPropsKeys.hasMoreElements()) 156 { 157 String key = (String) contextPropsKeys.nextElement(); 158 Properties contextProps = 159 (Properties) contextPropsList.get(key); 160 InitialContext context = new InitialContext(contextProps); 161 data.getJNDIContexts().put(key, context); 162 } 163 } 164 catch (Exception e) 165 { 166 Log.error("Failed to initialize JDNI contexts!",e); 167 168 throw new InitializationException( 169 "Failed to initialize JDNI contexts!"); 170 } 171 } 172 173 /*** 174 * Return the Context with the specified name. The Context is 175 * constructed using the properties for the context with the 176 * specified name; ie. those properties that start with 177 * "services.servicename.properties.name.". 178 * 179 * @param contextName The name of the context. 180 * @return The context with the specified name, or null if no 181 * context exists with that name. 182 */ 183 public Context getContext(String contextName) 184 { 185 // Get just the properties for the context with the specified 186 // name. 187 Properties contextProps = null; 188 189 if (contextPropsList.containsKey(contextName)) 190 { 191 contextProps = (Properties) contextPropsList.get(contextName); 192 } 193 else 194 { 195 contextProps = new Properties(); 196 } 197 198 // Construct a new context with the properties. 199 try 200 { 201 return new InitialContext(contextProps); 202 } 203 catch (Exception e) 204 { 205 return null; 206 } 207 } 208 }

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