package org.apache.turbine.services.naming;
   
   /*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  
  import java.util.HashMap;
  import java.util.Iterator;
  import java.util.Map;
  import java.util.Properties;
  
  import javax.naming.Context;
  import javax.naming.InitialContext;
  
  import org.apache.commons.configuration.Configuration;
  
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  
  import org.apache.turbine.Turbine;
  import org.apache.turbine.services.InitializationException;
  import org.apache.turbine.services.TurbineBaseService;
  import org.apache.turbine.util.RunData;
  
  /***
   * This class is the default implementation of NamingService, which
   * provides JNDI naming contexts.
   *
   * @author <a href="mailto:greg@shwoop.com">Greg Ritter</a>
   * @author <a href="mailto:colin.chalmers@maxware.nl">Colin Chalmers</a>
   * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a>
   * @version $Id: TurbineNamingService.java 534527 2007-05-02 16:10:59Z tv $
   */
  public class TurbineNamingService
          extends TurbineBaseService
          implements NamingService
  {
      /*** Logging */
      private static Log log = LogFactory.getLog(TurbineNamingService.class);
  
      /***
       * A global Map of Property objects which are initialised using
       * parameters from the ResourcesFile
       */
      private Map contextPropsList = null;
  
      /*** All initial contexts known to this service */
      private Map initialContexts = new HashMap();
  
      /***
       * Called the first time the Service is used.<br>
       *
       */
      public void init()
              throws InitializationException
      {
          // Context properties are specified in lines in the properties
          // file that begin with "context.contextname.", allowing
          // multiple named contexts to be used.  Everything after the
          // "contextname."  is the name of the property that will be
          // used by the InitialContext class to create a new context
          // instance.
  
          Configuration conf = Turbine.getConfiguration();
          try
          {
              contextPropsList = new HashMap();
  
              for (Iterator contextKeys = conf.subset("context").getKeys();
                   contextKeys.hasNext();)
              {
                  String key = (String) contextKeys.next();
                  int end = key.indexOf(".");
  
                  if (end == -1)
                  {
                      continue;
                  }
  
                  String contextName = key.substring(0, end);
                  Properties contextProps = null;
  
                  if (contextPropsList.containsKey(contextName))
                  {
                     contextProps = (Properties)
                             contextPropsList.get(contextName);
                 }
                 else
                 {
                     contextProps = new Properties();
                 }
 
                 contextProps.put(key.substring(end + 1),
                         conf.getString(key));
 
                 contextPropsList.put(contextName, contextProps);
             }
 
             for (Iterator contextPropsKeys = contextPropsList.keySet().iterator();
                  contextPropsKeys.hasNext();)
             {
                 String key = (String) contextPropsKeys.next();
                 Properties contextProps = (Properties) contextPropsList.get(key);
                 InitialContext context = new InitialContext(contextProps);
                 initialContexts.put(key, context);
             }
 
             setInit(true);
         }
         catch (Exception e)
         {
             log.error("Failed to initialize JDNI contexts!", e);
 
             throw new InitializationException(
                     "Failed to initialize JDNI contexts!");
         }
     }
 
     /***
      * Places the contexts defined in the TurbineResources instance
      * (if any) into the data.contexts Map.
      *
      * @param data The RunData object for the current request.
      * @exception InitializationException, if there was a problem
      * during initialization.
      * @deprecated This should never have been here. No replacement.
      */
     public void init(RunData data) throws InitializationException
     {
         try
         {
             if (contextPropsList == null)
             {
                 init();
             }
 
             for (Iterator it = contextPropsList.keySet().iterator(); it.hasNext();)
             {
                 String key = (String) it.next();
                 Properties contextProps =
                         (Properties) contextPropsList.get(key);
                 InitialContext context = new InitialContext(contextProps);
                 data.getJNDIContexts().put(key, context);
             }
         }
         catch (Exception e)
         {
             log.error("Failed to initialize JDNI contexts!", e);
 
             throw new InitializationException(
                     "Failed to initialize JDNI contexts!");
         }
     }
 
     /***
      * Return the Context with the specified name.  The Context is
      * constructed using the properties for the context with the
      * specified name; ie. those properties that start with
      * "services.servicename.properties.name.".
      *
      * @param contextName The name of the context.
      * @return The context with the specified name, or null if no
      * context exists with that name.
      */
     public Context getContext(String contextName)
     {
         // Get just the properties for the context with the specified
         // name.
         Properties contextProps = null;
 
         if (contextPropsList.containsKey(contextName))
         {
             contextProps = (Properties) contextPropsList.get(contextName);
         }
         else
         {
             contextProps = new Properties();
         }
 
         // Construct a new context with the properties.
         try
         {
             return new InitialContext(contextProps);
         }
         catch (Exception e)
         {
             return null;
         }
     }
 }