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Subject: [OASIS Issue Tracker] (ODATA-976) Support partial keys
[ https://issues.oasis-open.org/browse/ODATA-976?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Ralf Handl updated ODATA-976: ----------------------------- Parent: (was: ODATA-799) Issue Type: New Feature (was: Sub-task) > Support partial keys > -------------------- > > Key: ODATA-976 > URL: https://issues.oasis-open.org/browse/ODATA-976 > Project: OASIS Open Data Protocol (OData) TC > Issue Type: New Feature > Components: OData URL Conventions > Affects Versions: V4.0_ERRATA02 > Environment: New Query Capabilities > Reporter: Ralf Handl > Fix For: V4.01_WD01 > > > In ODATA-954 we added support for composite keys expressed through key-as-segment, which begged the question what happens if only part of the key is specified. It seems reasonalbe that, in this case, we would do a partial filtering of the results. > i.e.; > AccountingDocuments/SAP/2016 > would identify the subset of accounting documents for a company and year, and > AccountingDocuments/SAP > would identify the subset of accounting documents for a company. > Services could optionally support this as a shorthand for > GET AccountingDocuments?$filter=CompanyCode eq 'SAP' and Year eq '2016' > and > GET AccountingDocuments?$filter=CompanyCode eq 'SAP' > If supported, we should define consistent semantics across both key-as-segment and parens-syntax. > Note that the rules for disambiguation would be a little inconsistent. Normally we interpret a path segment first as a property, then as a function/action, then as a property. If we support partial keys then the resolution rules become a bit tricky -- if the previous segment matches a partial key value then the next segment would be matched as a partial key value before anything else. > Note also that the same scenarios could be supported through filter. -- This message was sent by Atlassian JIRA (v6.2.2#6258)
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