RE: Qualifier Combinations in CQL (Was: Bib-2 and the DC-Lib)

> Another way to achive the above sort of thing is using the attribute
> overlay scheme I talked about earlier. Its not perfect, but you could
> express the above in (extended) CCL with our system as
> 
>     utilCreator= @personal(@agentDetail(Kernighan))

No!

The way to do that is to define an Index in an IndexSet somewhere where you
combine the attributes that you want.  Then you would just say
DCLIB.author=Kernighan and define in the DCLIB IndexSet the Index author as
a combination of the AccessPoint Creator from XC, the SemanticQualifier of
Personal from Bib-1 and the AgentDetail of Whatever from DC-Lib.

There is no need to try to fudge together an access point on the fly when
you can define one statically.  The whole point of trying to get Explain to
work in SRW is so that you can have those static definitions and stop hoping
that the dynamic definitions work the way you want them to.

Ralph

Received on Wednesday, 24 April 2002 09:21:55 UTC