Package org.apache.avalon.framework.service

Class WrapperServiceSelector

java.lang.Object
org.apache.avalon.framework.service.WrapperServiceSelector
All Implemented Interfaces:
ServiceSelector
public class WrapperServiceSelector extends Object implements ServiceSelector
This is a ServiceSelector implementation that can wrap around a legacy ComponentSelector object effectively adapting a ComponentSelector interface to a ServiceSelector interface.

This class implements the Component interface because it is used in environments which expect all components to implement Component.

Since:
4.1.4
Version:
CVS $Revision: 1.10 $ $Date: 2004/02/11 14:34:26 $
Author:
Avalon Development Team

  • Constructor Details

    • WrapperServiceSelector

      public WrapperServiceSelector(String key, ComponentSelector selector)
      This constructor is a constructor for a ComponentServiceManager
      Parameters:
      key - the key used to aquire this selector
      selector - the selector to wrap

  • Method Details

    • select

      public Object select(Object policy) throws ServiceException
      Select a service based on a policy.
      Specified by:
      select in interface ServiceSelector
      Parameters:
      policy - the policy
      Returns:
      the service
      Throws:
      ServiceException - if unable to select service

    • isSelectable

      public boolean isSelectable(Object policy)
      Check to see if a Object exists relative to the supplied policy.
      Specified by:
      isSelectable in interface ServiceSelector
      Parameters:
      policy - a Object containing the selection criteria
      Returns:
      True if the component is available, False if it not.

    • release

      public void release(Object object)
      Return the Object when you are finished with it. This allows the ServiceSelector to handle the End-Of-Life Lifecycle events associated with the Object. Please note, that no Exception should be thrown at this point. This is to allow easy use of the ServiceSelector system without having to trap Exceptions on a release.
      Specified by:
      release in interface ServiceSelector
      Parameters:
      object - The Object we are releasing.