[DAS] Re: [Call to action] Retrieval of positions from feature identifiers

[Lincoln Stein]

Hi Thomas, Brian,

 >     myDsn + "/features?feature_id=ENSE0000012425"

I'm happy with this as a speculative feature if we can add a
feature_class argument:

  myDsn + "/features?feature_id=ENSE0000012425;feature_class=Exon"

Otherwise namespace issues are going to kill us.  For example,
Wormbase's clones, sequences, and PCR products all share an
overlapping set of identifiers.

This begs the question of how you know in advance what classes are
published by the server.  For now, let's let a feature class of "Any"
act as a wildcard.  Attaching object classes to identifiers will help
us down the road when we want to return "real" objects in response to
link requests, rather than HTML pages.

If this is acceptable, I'll add it as an appendix to the DAS/1 spec,
and modify the LDAS and wormbase servers appropriately.

I am working very hard on a synthesis of the various proposals for
DAS/2, and will share the working document with you all in a couple of
days.

Lincoln

-- 
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Lincoln D. Stein                           Cold Spring Harbor Laboratory
lstein@cshl.org			                  Cold Spring Harbor, NY

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