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java.lang.Objectorg.apache.avalon.framework.service.WrapperServiceSelector
public class WrapperServiceSelector
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.
Field Summary | |
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private java.lang.String |
m_key
The role that this selector was aquired via. |
private org.apache.avalon.framework.component.ComponentSelector |
m_selector
The Selector we are wrapping. |
Constructor Summary | |
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WrapperServiceSelector(java.lang.String key,
org.apache.avalon.framework.component.ComponentSelector selector)
This constructor is a constructor for a ComponentServiceManager |
Method Summary | |
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(package private) org.apache.avalon.framework.component.ComponentSelector |
getWrappedSelector()
The WrapperServiceManager wraps ComponentSelectors in
WrapperServiceSelectors when they are looked up. |
boolean |
isSelectable(java.lang.Object policy)
Check to see if a Object exists relative to the supplied policy. |
void |
release(java.lang.Object object)
Return the Object when you are finished with it. |
java.lang.Object |
select(java.lang.Object policy)
Select a service based on a policy. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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private final org.apache.avalon.framework.component.ComponentSelector m_selector
private final java.lang.String m_key
Constructor Detail |
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public WrapperServiceSelector(java.lang.String key, org.apache.avalon.framework.component.ComponentSelector selector)
key
- the key used to aquire this selectorselector
- the selector to wrapMethod Detail |
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public java.lang.Object select(java.lang.Object policy) throws org.apache.avalon.framework.service.ServiceException
select
in interface org.apache.avalon.framework.service.ServiceSelector
policy
- the policy
ServiceException
- if unable to select servicepublic boolean isSelectable(java.lang.Object policy)
Object
exists relative to the supplied policy.
isSelectable
in interface org.apache.avalon.framework.service.ServiceSelector
policy
- a Object
containing the selection criteria
public void release(java.lang.Object object)
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.
release
in interface org.apache.avalon.framework.service.ServiceSelector
object
- The Object
we are releasing.org.apache.avalon.framework.component.ComponentSelector getWrappedSelector()
WrapperServiceManager
wraps ComponentSelectors in
WrapperServiceSelectors when they are looked up. This method
makes it possible to release the original component selector.
ComponentSelector
being wrapped.
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