uk.ac.starlink.util
Class WrapUtils

java.lang.Object
  extended by uk.ac.starlink.util.WrapUtils

public class WrapUtils
extends java.lang.Object

Utilities relating to the Wrapper class.

Since:
3 Apr 2008

Method Summary
static java.lang.Object getWrapped(java.lang.Object obj)
          Returns the object on which a given object is based.
static java.lang.Object getWrapped(java.lang.Object obj, java.lang.Class clazz)
          Attempts to return an object of a given class on which a given object is based.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Method Detail

getWrapped

public static java.lang.Object getWrapped(java.lang.Object obj)
Returns the object on which a given object is based. If obj is a Wrapper, it is unwrapped as far as possible and the base object is returned. Otherwise obj itself is returned.

Parameters:
obj - test object
Returns:
ultimate base object of obj

getWrapped

public static java.lang.Object getWrapped(java.lang.Object obj,
                                          java.lang.Class clazz)
Attempts to return an object of a given class on which a given object is based. An object is unwrapped (see Wrapper.getBase()) until an object of class clazz is found, at which point it is returned. If no clazz object can be found, null is returned.

Parameters:
obj - test object
Returns:
object within the wrapping hierarchy of class clazz, or null

Copyright © 2004 CLRC: Central Laboratory of the Research Councils. All rights reserved.