Package org.apache.avalon.framework.component

Class WrapperComponentSelector

java.lang.Object
org.apache.avalon.framework.component.WrapperComponentSelector
All Implemented Interfaces:
Component, ComponentSelector
public class WrapperComponentSelector extends Object implements ComponentSelector
This is a ServiceSelector implementation that can wrap around a legacy ComponentSelector object effectively adapting a ComponentSelector interface to a ServiceSelector interface.
Since:
4.1.4
Version:
CVS $Revision: 1.11 $ $Date: 2004/02/11 14:34:25 $
Author:
Avalon Development Team

  • Constructor Details

    • WrapperComponentSelector

      public WrapperComponentSelector(String key, ServiceSelector selector)
      This constructor is a constructor for a WrapperComponentSelector.
      Parameters:
      key - the key used to aquire this selector
      selector - the selector to wrap

  • Method Details

    • select

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

    • hasComponent

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

    • release

      public void release(Component 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 ComponentSelector
      Parameters:
      object - The Object we are releasing.