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SRS through GCG?

Guy Bottu gbottu at ben.vub.ac.be
Wed May 6 13:45:43 EST 1998

It is possible to use the same indexes for lookup and the native SRS,
since GCG 8 lookup, GCG 9 lookup, SRS 4 and SRS 5 use the same format
for indexes.
There are however two problems :
- the lookup of GCG uses the sdl files of SRS 4, while SRS 5 uses a new
kind of files (i and is Icarus files). Although you need only one
version of the indexes, you would have to keep SRS 4 and SRS 5 in
parallel or decide to use only the older SRS 4. If you decide to install
SRS 5, you will need to do a lot of hacking to make sure that library
names, library numbers and srsfield shortnames are consistently the
same in the sdl and Icarus files.
- Reinhard Doelz found a way to hack the code of GCG 8 lookup to make it
work with indexes generated by SRS 4 and recently I made GCG 9 lookup
work with the indexes generated by SRS 5. One thing to do was to make
sure that lookup reads only indexes for Sequence databanks and not
others. Unfortunately, GCG has become touchy about its source code and
we are not allowed to make the modified code public. I have no
experience with the opposite operation, to make the native SRS work with
indexes generated by GCG, but it should be possible. Note that you would
have an SRS without sequencerelated databanks and without links. Note 
also that there is a good reason for using SRS 5 rather than SRS 4/GCG :
it indexes a lot faster !

So, forget about it or take your start on a road full of obstacles...

	Guy Bottu

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