cvs commit: jakarta-avalon-excalibur/assembly/src/java/org/apache/excalibur/merlin/registry ServiceTable.java

[mc...@apache.org]

mcconnell    2002/07/02 17:51:23

  Added:       assembly/src/java/org/apache/excalibur/merlin/registry
                        ServiceTable.java
  Log:
  table the holds references to all candidate provider profiles for a particular service type
  
  Revision  Changes    Path
  1.1                  jakarta-avalon-excalibur/assembly/src/java/org/apache/excalibur/merlin/registry/ServiceTable.java
  
  Index: ServiceTable.java
  ===================================================================
  /*
   * 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.
   */
  package org.apache.excalibur.merlin.registry;
  
  import java.util.List;
  import java.util.LinkedList;
  import org.apache.avalon.framework.logger.Logger;
  import org.apache.avalon.framework.logger.AbstractLogEnabled;
  import org.apache.excalibur.containerkit.metainfo.ServiceDesignator;
  
  /**
   * Internal table that holds references to the available component types 
   * that represent candidate providers for a single service type. 
   *
   * @author <a href="mailto:mcconnell@apache.org">Stephen McConnell</a>
   * @version $Revision: 1.1 $ $Date: 2002/07/03 00:51:23 $
   */
  final class ServiceTable extends AbstractLogEnabled
  {
  
      //=======================================================================
      // state
      //=======================================================================
  
     /**
      * Component type lists keyed by service designator.
      */
      private List m_providers = new LinkedList();
  
     /**
      * Identification of the service type that this table is supporting.
      */
      private ServiceDesignator m_designator;
  
      public ServiceTable( ServiceDesignator designator, Logger logger )
      {
          m_designator = designator;
          super.enableLogging( logger );
      }
  
      //=======================================================================
      // ServiceTable
      //=======================================================================
  
     /**
      * Add a service provider to the set of provider managed by this table.
      *
      * @param classname the component class name
      * @return the component type
      */
      public void add( ComponentType type )
      {
          getLogger().debug("addition\n\ttype:" + type + "\n\ttable: " + this );
          m_providers.add( type );
      }
  
     /**
      * Returns the set of providers currently registered in the table.
      * @return the set of component types capable of acting as a provider for the 
      *     service managed by the table
      */
      public ComponentType[] getTypes()
      {
          return (ComponentType[]) m_providers.toArray( new ComponentType[0] );
      }
  
     /**
      * Return the service type for the table.
      * @return the service designator
      */
      public ServiceDesignator getService()
      {
          return m_designator;
      }
  
     /**
      * Return the number of entries in the table.
      * @return the number of providers
      */
      public int getSize()
      {
          return m_providers.size();
      }
  
  
  
     /**
      * Returns true if the table service designator matches the supplied designator.
      * @param service a service type designator
      * @return TRUE if the supplied service type matches the the service type for 
      *    this table.
      */
      public boolean matches( ServiceDesignator service )
      {
          return m_designator.matches( service );
      }
  
  
      public String toString()
      {
         return "ServiceTable:" + System.identityHashCode( this ) + ", " + m_designator;
      }
  }
  
  
  
  

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