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From mcconn...@apache.org
Subject cvs commit: avalon-sandbox/assembly/src/java/org/apache/avalon/assembly/lifecycle/context AvalonContextualizer.java AvalonContextualizer.xinfo DefaultContextManager.java DefaultContextManager.xinfo
Date Thu, 27 Feb 2003 23:12:47 GMT
mcconnell    2003/02/27 15:12:46

  Added:       assembly/src/java/org/apache/avalon/assembly/lifecycle/context
                        AvalonContextualizer.java
                        AvalonContextualizer.xinfo
  Removed:     assembly/src/java/org/apache/avalon/assembly/lifecycle/context
                        DefaultContextManager.java
                        DefaultContextManager.xinfo
  Log:
  DefaultContextManager renamed to AvalonContextualizer.
  
  Revision  Changes    Path
  1.1                  avalon-sandbox/assembly/src/java/org/apache/avalon/assembly/lifecycle/context/AvalonContextualizer.java
  
  Index: AvalonContextualizer.java
  ===================================================================
  /* ==================================================================== 
   * The Apache Software License, Version 1.1 
   * 
   * Copyright (c) 2002 The Apache Software Foundation. All rights 
   * reserved. 
   * 
   * Redistribution and use in source and binary forms, with or without 
   * modification, are permitted provided that the following conditions 
   * are met: 
   * 
   * 1. Redistributions of source code must retain the above copyright 
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution,
   *    if any, must include the following acknowledgment:
   *    "This product includes software developed by the
   *    Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowledgment may appear in the software 
   *    itself, if and wherever such third-party acknowledgments  
   *    normally appear.
   *
   * 4. The names "Jakarta", "Avalon", and "Apache Software Foundation" 
   *    must not be used to endorse or promote products derived from this
   *    software without prior written permission. For written 
   *    permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache",
   *    nor may "Apache" appear in their name, without prior written
   *    permission of the Apache Software Foundation.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation. For more
   * information on the Apache Software Foundation, please see 
   * <http://www.apache.org/>.
   */ 
  
  package org.apache.avalon.assembly.lifecycle.context;
  
  import java.util.Map;
  
  import org.apache.avalon.framework.context.Context;
  import org.apache.avalon.framework.context.ContextException;
  import org.apache.avalon.framework.context.Contextualizable;
  import org.apache.avalon.framework.context.DefaultContext;
  import org.apache.avalon.assembly.lifecycle.context.Contextualization;
  import org.apache.avalon.assembly.lifecycle.context.AbstractContextualizer;
  import org.apache.avalon.meta.model.ContextDirective;
  
  /**
   * Definition of an strategy handler that handles the Contextualization
   * process. This implementation is provided as a template for alternative
   * context handlers.  The requirements for introduction of an alternative 
   * handler include:
   * <ul>
   * <li>A class implementing the {@link Contextualization} handler interface.</li>
   * <li>Declaration in the classes xinfo of the extension type where the 
   *       type attribute value is a version interface reference corresponding
   *       to the interface that the target component must implement.</li>
   * <li>Declaration by the target component in it's xinfo atttributes
   *       of the criteria for a custom context handler under the attribute
   *       key "urn:assembly:lifecycle.context.strategy" and value 
   *       corresponding to the strategy type. </li>
   * <li>Implementation of the strategy type interface by the target 
   *       component.</li>
   * </ul>
   *
   * @author <a href="mailto:dev@avalon.apache.org">Avalon Development Team</a>
   */
  public class AvalonContextualizer extends AbstractContextualizer
  {
      //=======================================================================
      // Extension
      //=======================================================================
  
      /**
       * Handle the contextualization stage of a component lifecycle.
       *
       * @param descriptor the context descriptor
       * @param object the object to contextualize
       * @param map a map of context entries
       * @exception ContextException if a contextualization error occurs
       */
      public void contextualize( ContextDirective directive, Object object, Map map ) 
        throws ContextException
      {
          if( object instanceof Contextualizable )
          {
              Object context = createContextArgument( directive, DefaultContext.class, map
);
              if( context instanceof Context )
              {
                  ( (Contextualizable)object ).contextualize( (Context) context );
              }
              else
              {
                  final String error = 
                    "Requested context implementation " + context.getClass().getName()
                    + " does not implement the Context interface.";
                  throw new ContextException( error );
              }
          }
      }
  }
  
  
  
  1.1                  avalon-sandbox/assembly/src/java/org/apache/avalon/assembly/lifecycle/context/AvalonContextualizer.xinfo
  
  Index: AvalonContextualizer.xinfo
  ===================================================================
  <?xml version="1.0"?>
  <!DOCTYPE type
        PUBLIC "-//AVALON/Component Type DTD Version 1.0//EN"
               "http://avalon.apache.org/dtds/meta/type_1_1.dtd" >
  
  <!--  
  Copyright (C) The Apache Software Foundation. All rights reserved.
  This software is published under the terms of the Apache Software License
  version 1.1, a copy of which has been included with this distribution in
  the LICENSE.txt file.
  
  @author  Avalon Development Team
  @version 1.0 12/03/2001
  -->
  
  <!--
  Definition of the extension type phase support.
  -->
  
  <type>
  
    <info>
      <name>context</name>
    </info>
  
    <!--
    Declaration of the lifecycle support phases that this manager provides. 
    -->
    <extensions>
      <extension type="org.apache.avalon.framework.context.Contextualizable:4.1" phase="CONTEXT"
/>
    </extensions>
  
  </type>
  
  
  
  

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