DefaultComponentSelector

java.lang.Object
- org.apache.avalon.framework.component.DefaultComponentSelector

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: 1.23 $ $Date: 2004/02/11 14:34:25 $

Author:

Avalon Development Team

Constructor Summary

Constructors
Constructor and Description

DefaultComponentSelector()

Constructors
Constructor and Description
`DefaultComponentSelector()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and 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 not
`void`	`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.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - DefaultComponentSelector
```
public DefaultComponentSelector()
```
- Method Detail
  - 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 interface ComponentSelector
    
    Parameters:
    
    hint - the hint to retrieve Component
    
    Returns:
    
    the Component
    
    Throws:
    
    ComponentException - if an error occurs
  - hasComponent
```
public boolean hasComponent(java.lang.Object hint)
```
    Returns whether a Component exists or not
    
    Specified by:
    
    hasComponent in interface ComponentSelector
    
    Parameters:
    
    hint - the hint to retrieve Component
    
    Returns:
    
    true if the Component exists
  - release
```
public void release(Component component)
```
    Release component.
    
    Specified by:
    
    release in interface ComponentSelector
    
    Parameters:
    
    component - the component
  - put
```
public void put(java.lang.Object hint,
                Component component)
```
    Populate the ComponentSelector.
    
    Parameters:
    
    hint - the hint to retrieve Component
    
    component - the component to add
  - getComponentMap
```
protected final java.util.Map getComponentMap()
```
    Helper method for subclasses to retrieve component map.
    
    Returns:
    
    the component map
  - makeReadOnly
```
public void makeReadOnly()
```
    Make this component selector read-only.
  - 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

Class DefaultComponentSelector

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

DefaultComponentSelector

Method Detail

select

hasComponent

release

put

getComponentMap

makeReadOnly

checkWriteable