Class DefaultComponentSelector
- java.lang.Object
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- org.apache.avalon.framework.component.DefaultComponentSelector
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- All Implemented Interfaces:
Component
,ComponentSelector
public class DefaultComponentSelector extends java.lang.Object implements ComponentSelector
This is the default implementation of the ComponentSelector.Deprecated: Use
DefaultServiceSelector
instead.- Version:
- CVS $Revision: 1.21 $ $Date: 2003/02/11 15:58:38 $
- Author:
- Avalon Development Team
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Constructor Summary
Constructors Constructor Description DefaultComponentSelector()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected void
checkWriteable()
Check if this component m_manager is writeable.protected java.util.Map
getComponentMap()
Helper method for subclasses to retrieve component map.boolean
hasComponent(java.lang.Object hint)
Returns whether a Component exists or notvoid
makeReadOnly()
Make this component selector read-only.void
put(java.lang.Object hint, Component component)
Populate the ComponentSelector.void
release(Component component)
Release component.Component
select(java.lang.Object hint)
Select the desired component.
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Method Detail
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select
public Component select(java.lang.Object hint) throws ComponentException
Select the desired component. It does not cascade, neither should it.- Specified by:
select
in interfaceComponentSelector
- Parameters:
hint
- the hint to retrieve Component- Returns:
- the Component
- Throws:
ComponentException
- if an error occurs
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hasComponent
public boolean hasComponent(java.lang.Object hint)
Returns whether a Component exists or not- Specified by:
hasComponent
in interfaceComponentSelector
- Parameters:
hint
- the hint to retrieve Component- Returns:
true
if the Component exists
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release
public void release(Component component)
Release component.- Specified by:
release
in interfaceComponentSelector
- Parameters:
component
- the component
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put
public void put(java.lang.Object hint, Component component)
Populate the ComponentSelector.- Parameters:
hint
- the hint to retrieve Componentcomponent
- the component to add
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getComponentMap
protected final java.util.Map getComponentMap()
Helper method for subclasses to retrieve component map.- Returns:
- the component map
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makeReadOnly
public void makeReadOnly()
Make this component selector read-only.
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checkWriteable
protected final void checkWriteable() throws java.lang.IllegalStateException
Check if this component m_manager is writeable.- Throws:
java.lang.IllegalStateException
- if this component m_manager is read-only
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