wiki-archive/twiki/data/TAPIR/ProtocolFeaturesRequestMeth...

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date 2007.01.09.00.00.00; author MoinMoin; state Exp;
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@See: InventoryRequest
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---+ Inventory/Scan Request
This request returns a (sorted) list of distinct values for a requested concept. In DiGIR the inventory request as well as the scan request in BioCASE allow up to now only to query for a single concept.
See the DifferencesInScanOperations for the different protocol aspects.
---+++++ Desired Scan Features
* paging through the result set, if providers limit the number of returned items
* scan combined multiple concepts as in SELECT DISTINCT in SQL.
* allow filters to work with scans
* allow to only count the number of distinct values (See CountRequest for a possible seperate request method)
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See the DifferenceInScanOperation for the different protocol aspects.
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---+ Scan Request
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* allow to only count the number of distinct values (See ProtocolFeatures/RequestMethods/CountRequest for a possible seperate request method)
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* allow to only count the number of distinct values (See CountRequest for a possible seperate request method)
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