Nina Jeliazkova wrote:
> Hi Tobias,
>
> Tobias Girschick wrote:
>   
>> Hi Nina,
>>
>> in one of your previous mails to Fabian you gave this return URI:
>>
>>   
>>     
>>>> http://ambit.uni-plovdiv.bg:8080/ambit2/dataset/37?feature_uris[]=http://ambit.uni-plovdiv.bg:8080/ambit2/dataset/37/feature&feature_uris[]=http://ambit.uni-plovdiv.bg:8080/ambit2/feature/29658&feature_uris[]=http://ambit.uni-plovdiv.bg:8080/ambit2/feature/29659
>>>>       
>>>>         
>>> [...], I should return the long URL upon upload. 
>>>
>>>  In fact one can construct wide variety of datasets, combining features
>>> from several existing ones via feature_uris[], without anything
>>> physically copied.
>>>     
>>>       
>> I have some questions concerning this. First of all, don't you think we
>> might run into problems with URL length limits (theoretically
>> non-existent but practically at 2 - 190 thousand depending on the server
>> or browser)?
>>   
>>     
> You are right, this is actually API issue - how do we handle
> restrictions on the URIs.  Without losing flexiblity,  I can see couple
> of ways
> 1) retrieving same information via POST (then the parameters will be
> inside the www-form , instead of URI ), but we'll deviate from REST best
> practice.
>
> 2) Introduce a separate resource, where one can create groups of
> features for later reuse :
>
> GET /feature_list/{id}   can return 
> /feature/1
> /feature/2
> etc
>
> POST /feature_list   will accept uri-list or RDF and will create new
> group of features
> PUT /feature_list/{id}  will update the list
> DELETE  will delete the list
>
>  then the dataset URI might be reduced to
>
> http://ambit.uni-plovdiv.bg:8080/ambit2/dataset/37?feature_uris[]=/feature_list/mylist_of_selected_features  
>
> (there is no restriction that feature_uris[] contains a single feature, any number will do)
>
>   
>> Second, isn't the first part of the URI sufficient? (Here it is the URI
>> that is returned upon a POST of a dataset to /dataset that has been
>> submitted for descriptor calculation).
>>   
>>     
> For completeness of the URL, and avoiding errors, I would prefer to
> avoid splitting. 
>   
Sorry, I misunderstood the question.  No, the first part is not
sufficient, because the intention was to construct a dataset, which will
contain different subset of features, compared to  just /dataset/37 .

The feature_uris[] parameter provide a way to deal with subset of a
dataset, without the need to duplicate (download/upload) the data itself.

Best regards,
Nina
>> best regards,
>> Tobias
>>
>>
>>
>>   
>>     
>
> _______________________________________________
> Development mailing list
> Development at opentox.org
> http://www.opentox.org/mailman/listinfo/development
>