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

[Matthew Pocock]

Hi Lincoln,

1) Is this type of lookup optional? If so, how do we find out if a 
server supports it (in a machine-machine way)?

2) How does feature_class relate to method, category and type? If it 
doesn't, then how do we know what feature_class to choose (how is it 
published)? If it is identical to one of these, can we rename it?

Matthew

ps I look forward to looking at your ideas for what should be in DAS2

Lincoln Stein wrote:

> 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
> 
>