/*
* (C) Copyright 2006-2012 Nuxeo SA (http://nuxeo.com/) and others.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Contributors:
* IBM Corporation - initial API and implementation
* Nuxeo - added generics in method signatures
*/
package org.nuxeo.runtime.model;
/**
* An interface for an adaptable object.
* <p>
* Adaptable objects can be dynamically extended to provide different interfaces (or "adapters"). Adapters are created
* by adapter factories, which are in turn managed by type by adapter managers.
* <p>
* For example,
*
* <pre>
* IAdaptable a = [some adaptable];
* IFoo x = a.getAdapter(IFoo.class);
* if (x != null)
* [do IFoo things with x]
* </pre>
* <p>
* This interface can be used without OSGi running.
* <p>
* Clients may implement this interface, or obtain a default implementation of this interface by subclassing
* <code>PlatformObject</code>.
*
* @see AdapterFactory
* @see AdapterManager
* @see AdaptableObject
*/
public interface Adaptable {
/**
* Returns an object which is an instance of the given class associated with this object. Returns <code>null</code>
* if no such object can be found.
*
* @param adapter the adapter class to look up
* @return a object castable to the given class, or <code>null</code> if this object does not have an adapter for
* the given class
*/
<T> T getAdapter(Class<T> adapter);
}