avalon-cvs mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From mcconn...@apache.org
Subject cvs commit: jakarta-avalon-excalibur/assembly/src/java/org/apache/excalibur/assembly/appliance ApplianceSelector.java
Date Tue, 19 Nov 2002 12:26:59 GMT
mcconnell    2002/11/19 04:26:59

  Added:       assembly/src/java/org/apache/excalibur/assembly/appliance
                        ApplianceSelector.java
  Log:
  Interface implemented by a service selection implementation mechanism.  Classes implementing
the selector interface may be activated during the selection of candidate service providers
during assembly.  A component author may declare a selection class explicitly via a service
dependency attribute with the attribute name of <code>avalon:appliance.selector</code>.
  
  Revision  Changes    Path
  1.1                  jakarta-avalon-excalibur/assembly/src/java/org/apache/excalibur/assembly/appliance/ApplianceSelector.java
  
  Index: ApplianceSelector.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.excalibur.assembly.appliance;
  
  import org.apache.excalibur.meta.info.StageDescriptor;
  import org.apache.excalibur.meta.info.DependencyDescriptor;
  import org.apache.excalibur.assembly.profile.ProfileSelector;
  
  /**
   * Interface implemented by a service selection implementation mechanism.  Classes
   * implementing the selector interface may be activated during the selection of
   * candidate service providers during assembly.  A component author may declare a 
   * selection class explicitly via a service dependency attribute with the attribute 
   * name of <code>avalon:appliance.selector</code>.
   *
   * @author <a href="mailto:mcconnell@apache.org">Stephen McConnell</a>
   * @version $Revision: 1.1 $ $Date: 2002/11/19 12:26:59 $
   */
  public interface ApplianceSelector extends ProfileSelector
  {
      /**
       * Returns the preferred appliance form an available selection of 
       * candidate service providers.
       * @param appliances the set of candidate appliance instances
       * @return the preferred provider or null if no satisfactory provider can be established
       *    from the supplied appliance set.
       */
      Appliance select( Appliance[] appliances, DependencyDescriptor dependency );
  
      /**
       * Returns the preferred appliance form an available selection of candidate 
       * extension providers
       * @return the preferred provider or null if no satisfactory provider can be established
       *    from the supplied appliance set.
       */
      Appliance select( Appliance[] appliances, StageDescriptor stage );
  
  }
  
  
  

--
To unsubscribe, e-mail:   <mailto:avalon-cvs-unsubscribe@jakarta.apache.org>
For additional commands, e-mail: <mailto:avalon-cvs-help@jakarta.apache.org>


Mime
View raw message