[dotNetRDF-Develop] Issue CORE-63 has a new comment

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A new comment has been added to the following issue.

Title: Rewrite the SPARQL Expression evaluation around valued nodes
Project: Core Library (dotNetRDF.dll)
Created By: Rob Vesse
Date: 2011-12-05 12:36 AM
Comment: 

 Started work on this with revision 1997 in the 0.6.0 branch - note that the branch is currently non-buildable because most of the work is not yet done. 


 So far have added the IValuedNode interface with implementations for the core types and modified the ISparqlExpression interface to add the new Evaluate() method. Also made URI, Blank and Graph Literal nodes always implement IValuedNode (in their base classes) to save wrapping these nodes where it would otherwise be required, will still need to add some wrapper classes for when we get passed custom implementations of node interfaces. For example we still need to modify virtual node base classes to be aware of this interface

 More information on this issue can be found at http://www.dotnetrdf.org/tracker/Issues/IssueDetail.aspx?id=63


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