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Subject: New ebRS Section 8.2.4, ClassificationNodeQuery
Regrep, At its teleconference on Sept 7, the "regrep-query" team decided to try to replace the Browse and Drill Down section of Registry Services (cf ebRS Section 8.1) with enhancements to the Filter Query mechanism (cf ebRS Section 8.2). I volunteered to produce a revised Section 8.2.4, ClassificationNodeQuery, that accommodates all of the requirements of Browse and Drill Down Query. Like with the RegistryEntryQuery distributed earlier today, it assumes new methods in ebRIM on the ClassificationNode class for getPathDepth() and getPathElements(). The getPathDepth() method is particularly important because it allows queries that return only a portion of the subtree of nodes beneath a given node in the classification scheme hierarchy. The getPath() method, already included in ebRIM, but not yet fully specified, is also very important because it allows one to effectively do recursive queries on classification scheme hierarchies. The proposed new text for ClassificationNodeQuery (ebRS Section 8.2.4) is attached. If any of the proposed new methods are not approved for ebRIM, then the query elements corresponding to those methods can be deleted from the proposal. -- Len ************************************************************** Len Gallagher LGallagher@nist.gov NIST Work: 301-975-3251 Bldg 820 Room 562 Home: 301-424-1928 Gaithersburg, MD 20899-8970 USA Fax: 301-948-6213 **************************************************************
RS_ClassificationNodeQuery.pdf
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