ComponentAdapter (eXo PLF:: Kernel :: Container 6.3.1-RC01 API)

All Superinterfaces:

ComponentAdapter<T>

All Known Implementing Classes:

AbstractComponentAdapter, InstanceComponentAdapter, ManageableComponentAdapter, MX4JComponentAdapter
```
public interface ComponentAdapter<T>
extends ComponentAdapter<T>
```
A component adapter is responsible for providing a specific component instance. An instance of an implementation of this interface is used inside a Container for every registered component or instance. Each ComponentAdapter instance has to have a key which is unique within that container. The key itself is either a class type (normally an interface) or an identifier.

Version:

$Id$

Author:

Nicolas Filotto

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Class<? extends T>`	`getComponentImplementation()`	Retrieve the class of the component.
`T`	`getComponentInstance()`	Retrieve the component instance.
`Object`	`getComponentKey()`	Retrieve the key associated with the component.
`boolean`	`isSingleton()`	Indicates whether or not this adapter is a singleton

- Method Detail
  - getComponentKey
```
Object getComponentKey()
```
    Retrieve the key associated with the component.
    
    Specified by:
    
    getComponentKey in interface ComponentAdapter<T>
    
    Returns:
    
    the component's key. Should either be a class type (normally an interface) or an identifier that is unique (within the scope of the current Container).
  - getComponentImplementation
```
Class<? extends T> getComponentImplementation()
```
    Retrieve the class of the component.
    
    Specified by:
    
    getComponentImplementation in interface ComponentAdapter<T>
    
    Returns:
    
    the component's implementation class. Should normally be a concrete class (ie, a class that can be instantiated).
  - getComponentInstance
```
T getComponentInstance()
                throws ContainerException
```
    Retrieve the component instance. This method will usually create a new instance each time it is called, but that is not required.
    
    Returns:
    
    the component instance.
    
    Throws:
    
    ContainerException - if the component could not be instantiated. Or if the component has dependencies which could not be resolved, or instantiation of the component lead to an ambiguous situation within the container.
  - isSingleton
```
boolean isSingleton()
```
    Indicates whether or not this adapter is a singleton