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Subject: [OASIS Issue Tracker] (ODATA-827) introduce $compute query option
[ https://issues.oasis-open.org/browse/ODATA-827?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Ralf Handl updated ODATA-827: ----------------------------- Proposal: Add "$compute" query option allowing additional compute properties to be added to each instance. The syntax is identical to the compute() transformation in Data Aggregation, i.e. compute(<list of compute expressions>) -> $compute=<list of compute expressions>. Especially the restriction to simple values remains: A compute expression is an expression valid in a $filter system query option on the input set that results in a simple value. $compute is also allowed as query option nested within $expand to add computed simple dynamic properties to expanded entities. was: Add "$compute" query option allowing additional compute properties to be added to each instance. $compute is allowed as query option applied to $expand. $compute=... is just a shorthand for $apply=compute(...), and the compute expressions are restricted to simple values, so I see no conflict with $expand. > introduce $compute query option > ------------------------------- > > Key: ODATA-827 > URL: https://issues.oasis-open.org/browse/ODATA-827 > Project: OASIS Open Data Protocol (OData) TC > Issue Type: Improvement > Components: OData Protocol, OData URL Conventions > Affects Versions: V4.0_WD01 > Environment: New Query Capabilities > Reporter: Andrew Eisenberg > Labels: GoodIdea, Usability > Fix For: V4.01_WD01 > > > OData could be extended to allow derived computed values to be returned along with the properties of an entity. > This could be expressed as: > http://odata.netflix.com/v2/Catalog/Titles?$compute=substring(ShortSynopsis,20) as Summary&$select=Name,Summary > In ODATA-9 we added support for an equivalent compute transformation in our Data Aggregation Extensions. -- This message was sent by Atlassian JIRA (v6.2.2#6258)
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