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Subject: [OASIS Issue Tracker] (ODATA-827) introduce $compute query option
[ https://issues.oasis-open.org/browse/ODATA-827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=61323#comment-61323 ] Michael Pizzo commented on ODATA-827: ------------------------------------- How would this work if I wanted to include the results of a bound function call? Would I do something like: GET ~Products?$compute=ns.RecentSalesByManager(Manager='Bob') as recentSales&$select=*,recentSales If so, does this give us an alternate syntax for expand? GET ~Customers?$compute=Orders as salesOrders&$select=*,salesOrders I'd rather not introduce another way to do $expand. Should we use $expand for any time we want to extend the members of the entity (versus arbitrary transformations in $apply)? For example, we could "create" dynamic properties in $expand by naming a property that didn't already exist and using $compute as: $expand=newProperty(expandoptions)=$compute(expression) or as an expand option: $expand=newProperty($compute(expression);expandoptions) or $expand=$compute(expression as newProperty(expandoptions),expression2 as newProperty2(expandoptions)) or??? > 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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