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From Apache Wiki <>
Subject [Ws Wiki] Update of "FrontPage/Woden/WSDLExtensionChanges" by JohnKaputin
Date Mon, 04 Feb 2008 22:51:42 GMT
Dear Wiki user,

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The following page has been changed by JohnKaputin:

The comment on the change is:
work in progress - added more details

  The {{{ExtensionRegistry}}} methods that handled the {{{ComponentExtensions}}} type have
been changed to use {{{ComponentExtensionContext}}} instead. These are the {{{registerComponentExtension}}}
and {{{createComponentExtension}}} methods.
+ ''NOTE:'' Extension properties cannot be treated entirely generically. They can be accessed
in a generic way and ''wrapped'' as generic {{{ExtensionProperty}}} objects, but the caller
will still need to know what to do with the {{{java.lang.Object}}} returned by the {{{ExtensionProperty.getContent()}}}
method - what to cast it to or whether it implements a useful toString() method. Woden should
possibly provide some guidance here, like ''"extension implementors should define a suitable
{{{toString()}}} method for their extension properties, or for items in an extension property
based on a set."''. Then, client applications like GUI tools can at least display extension
property content without needing to know what type of object it is. As the Woden API convention
is to return typed-arrays for a ''set'' property, applications could just check for an Array
type, then call {{{toString()}}} on each element.
  === Overview of the new Component extensions model ===
  The following UML class diagram and the notes that follow it provide an overview of the
new Component extensions model: 

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