org.apache.sling.api.adapter

Class SlingAdaptable

java.lang.Object

org.apache.sling.api.adapter.SlingAdaptable

All Implemented Interfaces:

Adaptable

Direct Known Subclasses:

AbstractResource, SlingAdaptable

public abstract class SlingAdaptable
extends Object
implements Adaptable

The SlingAdaptable class is an (abstract) default implementation of the Adaptable interface. It just uses the default AdapterManager implemented to adapt itself to the requested type.

Extensions of this class may overwrite the adaptTo(Class) method using their own knowledge of adapters and should call this base class implementation to fall back for other types.

Since:

2.2

Constructor Summary

Constructors

Constructor and Description
SlingAdaptable()

Method Summary

Modifier and Type	Method and Description
<AdapterType> AdapterType	adaptTo(Class<AdapterType> type) Calls into the registered AdapterManager to adapt this object to the desired type.
static void	setAdapterManager(AdapterManager adapterMgr) Sets the global AdapterManager to be used by this class.
static void	unsetAdapterManager(AdapterManager adapterMgr) Unsets the global AdapterManager.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SlingAdaptable

public SlingAdaptable()

Method Detail

setAdapterManager

public static void setAdapterManager(AdapterManager adapterMgr)

Sets the global AdapterManager to be used by this class.

This method is intended to only be called by the AdapterManager wanting to register itself for use. Currently only a single adapter manager is supported by this class.

Parameters:

adapterMgr - The AdapterManager to be globally used.

unsetAdapterManager

public static void unsetAdapterManager(AdapterManager adapterMgr)

Unsets the global AdapterManager.

This method is intended to only be called by the AdapterManager wanting to unregister itself. Currently only a single adapter manager is supported by this class.

Parameters:

adapterMgr - The AdapterManager to be unset. If this is not the same as currently registered this method has no effect.

adaptTo

public <AdapterType> AdapterType adaptTo(Class<AdapterType> type)

Calls into the registered AdapterManager to adapt this object to the desired type.

This method implements a cache of adapters to improve performance. That is repeated calls to this method with the same class will result in the same object to be returned.

Specified by:

adaptTo in interface Adaptable

Type Parameters:

AdapterType - The generic type to which this resource is adapted to

Parameters:

type - The Class object of the target type, such as javax.jcr.Node.class or java.io.File.class

Returns:

The adapter target or null if the resource cannot adapt to the requested type