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https://issues.apache.org/jira/browse/OLINGO-297?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Christian Amend resolved OLINGO-297.
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Resolution: Fixed
Fix Version/s: V2 2.0.0
Fixed with version 2.0.0 by commit: 84a47f92b77f7693295df4a0eeb9778bd10c438a
> Unable to create FunctionImport with empty return type
> ------------------------------------------------------
>
> Key: OLINGO-297
> URL: https://issues.apache.org/jira/browse/OLINGO-297
> Project: Olingo
> Issue Type: New Feature
> Components: odata2-core
> Affects Versions: V2 1.2.0
> Reporter: Vitali Yarmolik
> Assignee: Christian Amend
> Fix For: V2 2.0.0
>
>
> It is impossible to create a FunctionImport with empty return type.
> In the CSDL specification it's stated that {quote}<FunctionImport> *can*
> define a ReturnType.{quote}
> At odata.org it is mentioned as well in _3.3. Addressing Service Operations_
> section at
> http://www.odata.org/documentation/odata-version-2-0/uri-conventions/ :
> {quote}A Service Operation can accept primitive type input parameters and can
> be defined to return a single primitive, single complex type, collection of
> primitives, collection of complex types, a single Entry, a Collection of
> Entries, or *void*.{quote}
> When I create a FunctionImport object in the EdmProvider and don't specify
> its ReturnType it is shown correctly in the service metadata (i.e. without
> ReturnType attribute), but when I send request to call such a function import
> I get NullPointerException when ReturnType.getTypeName() method is called in
> EdmFunctionImportImplProv.getReturnType() method.
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