RPN tree-node changes.

diff --git a/Changes b/Changes
index 814b155..a256814 100644 (file)
--- a/Changes
+++ b/Changes
@@ -1,4 +1,4 @@
-$Id: Changes,v 1.40 2007-08-17 16:45:22 mike Exp $
+$Id: Changes,v 1.41 2007-08-20 10:58:35 mike Exp $

 
 Revision history for Perl extension Net::Z3950::SimpleServer
 
 
 Revision history for Perl extension Net::Z3950::SimpleServer
 

@@ -15,6 +15,16 @@ Revision history for Perl extension Net::Z3950::SimpleServer
          Perl structures representing the entire scan clause
          including access-points and other attributes (which are
          discarded from TERM).
          Perl structures representing the entire scan clause
          including access-points and other attributes (which are
          discarded from TERM).

+       - The various classes used to represent nodes in the RPN query
+         tree (Net::Z3950::APDU::Query, Net::Z3950::RPN::And,
+         Net::Z3950::RPN::Or, Net::Z3950::RPN::AndNot,
+         Net::Z3950::RPN::Term and Net::Z3950::RPN::RSID) now all
+         share a newly introduced superclass Net::Z3950::RPN::Node,
+         making it possible to write methods that apply to all node
+         types.
+       - A utility method toPQF() is provided for
+         Net::Z3950::RPN::Node, enabling the RPN tree to be converted
+         back into a flat PQF query.

 
 1.06  Fri Aug 10 23:30:00 BST 2007
        - New global-handle element can be specified when creating a
 
 1.06  Fri Aug 10 23:30:00 BST 2007
        - New global-handle element can be specified when creating a