org.glassfish.pfl.basic.facet
Class FacetAccessorImpl

java.lang.Object
  org.glassfish.pfl.basic.facet.FacetAccessorImpl

All Implemented Interfaces:

FacetAccessor

public class FacetAccessorImpl
extends java.lang.Object
implements FacetAccessor

Author:

ken

Constructor Summary

FacetAccessorImpl(java.lang.Object delegate)

Method Summary

<T> void	addFacet(T obj) Add a facet to the object.
<T> T	facet(java.lang.Class<T> cls) Access the Facet of Class T from the object.
java.util.Collection<java.lang.Object>	facets() Return a list of all facets on this object.
java.lang.Object	get(java.lang.reflect.Field field) Fetch the value of the field from whichever facet contains the field.
java.lang.Object	invoke(java.lang.reflect.Method method, java.lang.Object... args) Invoke method on the appropriate facet of this object, that is, on the facet corresponding to method.getDeclaringClass.
void	removeFacet(java.lang.Class<?> cls) Remove the facet (if any) of the given type.
void	set(java.lang.reflect.Field field, java.lang.Object value)

Methods inherited from class java.lang.Object

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

Constructor Detail

FacetAccessorImpl

public FacetAccessorImpl(java.lang.Object delegate)

Method Detail

facet

public <T> T facet(java.lang.Class<T> cls)

Description copied from interface: FacetAccessor

Access the Facet of Class T from the object.

Specified by:

facet in interface FacetAccessor

Type Parameters:

T - The Type (as a Class) of the Facet.

Parameters:

cls - The class of the facet.

Returns:

Instance of cls for this facet. Null if no such facet is available.

facets

public java.util.Collection<java.lang.Object> facets()

Description copied from interface: FacetAccessor

Return a list of all facets on this object.

Specified by:

facets in interface FacetAccessor

Returns:

Collection of all facets.

addFacet

public <T> void addFacet(T obj)

Description copied from interface: FacetAccessor

Add a facet to the object. The type T must not already be available as a facet.

Specified by:

addFacet in interface FacetAccessor

invoke

public java.lang.Object invoke(java.lang.reflect.Method method,
                               java.lang.Object... args)

Description copied from interface: FacetAccessor

Invoke method on the appropriate facet of this object, that is, on the facet corresponding to method.getDeclaringClass.

Specified by:

invoke in interface FacetAccessor

Parameters:

method - The method to invoke.

args - Arguments to the method.

Returns:

restult of the invoke call.

get

public java.lang.Object get(java.lang.reflect.Field field)

Description copied from interface: FacetAccessor

Fetch the value of the field from whichever facet contains the field. Read-only because that's all that the intended application needs.

Specified by:

get in interface FacetAccessor

Parameters:

field - The field to access

Returns:

The value of the field

set

public void set(java.lang.reflect.Field field,
                java.lang.Object value)

Specified by:

set in interface FacetAccessor

removeFacet

public void removeFacet(java.lang.Class<?> cls)

Description copied from interface: FacetAccessor

Remove the facet (if any) of the given type.

Specified by:

removeFacet in interface FacetAccessor

Parameters:

cls - The class of the facet to remove.