BioMart developers,

A user describes a problem with programmatic access to BioMart as follows: 

> When  accessing the data sets for the mart ENSEMBL_MART_PLANT via the 
> MartService at biomart.org, an error is being generated if the 
> virtualschema=default parameter is not included.
> 
> Example:
> 
> this isn't working
> http://www.biomart.org/biomart/martservice?type=configuration&dataset=alyrata_eg_gene
> 
> and this is
> http://www.biomart.org/biomart/martservice?type=configuration&dataset=alyrata_eg_gene&virtualschema=default
> 
> The services are accessed via the MartService urls.  To access the mart in 
> question we are using the url:
> 
> http://www.biomart.org/biomart/martservice?type=configuration&dataset=alyrata_eg_gene
> 
> which currently responds:
> Dataset name conflict for alyrata_eg_gene. Need to further qualify with the 
> virtualSchema param as well
> 
> If I add the virtualschema parameter as default, the correct information is 
> retrieved:
> 
> http://www.biomart.org/biomart/martservice?type=configuration&dataset=alyrata_eg_gene&virtualschema=default
> 
> However, based upon the  documentation, the virtualschema is 'default' by 
> default.  Do we have to  alter the client code to include the 
> virtualschema=default parameter?  Based on our reading of the docs it 
> shouldn't be required, e.g. accessing 
> http://www.gramene.org/biomart/martservice?type=configuration&dataset=alyrata_eg_gene
>  it is unnecessary.
> 
> If this doesn't make sense, let me know.

I would appreciate any advice you could provide.

--
Ken Youens-Clark
[email protected]
Gramene.org Project Manager
Ware Lab/CSHL/USDA-ARS



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