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SQL Server Tips by Gama and Naughter Consulting

 


Implementation

To get the code up and running, we again use the XP++ framework to implement the boilerplate code required.

XP_GIS exposes 6 XP’s using the following XP++ code:

IMPLEMENT_XP(XP_GIS_ELLIPSOIDINFO,CEllipsoidInfoExtendedStoredProcedure)
IMPLEMENT_XP(XP_GIS_DATUMINFO,CDatumInfoExtendedStoredProcedure)
IMPLEMENT_XP(XP_GIS_DATUMTRANSFORM,CDatumTransformExtendedStoredProcedure)
IMPLEMENT_XP(XP_GIS_LL2UTM,CLL2UTMExtendedStoredProcedure)
IMPLEMENT_XP(XP_GIS_UTM2LL,CUTM2LLExtendedStoredProcedure)
IMPLEMENT_XP(XP_GIS_DISTANCE_BETWEEN,CDistanceBetweenExtendedStoredProcedure)

All of the XP classes are implemented in the module “XP_GISProcs.h/cpp”.


The above book excerpt is from:

Super SQL Server Systems
Turbocharge Database Performance with C++ External Procedures

ISBN: 0-9761573-2-2
Joseph Gama, P. J. Naughter

 http://www.rampant-books.com/book_2005_2_sql_server_external_procedures.htm

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