virtual P6R::P6ERR P6R::p6IXMLNode::getNumberSortKey ( P6INT32 *  pNumber  )  [pure virtual]

This method is used to support sorting of p6IXMLNode components in a p6IDOMNodeset container.

Specifically it is used in the implemenation of the XSLT "xsl:sort" element. It allows the caller to read the numeric sort key that was set for the XML node.

Parameters:
pNumber [OUT] Integer value to be used as a sort key for this node.
Returns:
SuccessP6R::eOk 
FailureP6R::eNotInitializedA successful call to intialize() must be made before calling this funciton.
P6R::eInvalidArgOne of the parameters is NULL.
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