[jira] [Created] (OLINGO-297) Unable to create FunctionImport with empty return type

["Vitali Yarmolik (JIRA)" <ji...@apache.org>]

Vitali Yarmolik created OLINGO-297:
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             Summary: Unable to create FunctionImport with empty return type
                 Key: OLINGO-297
                 URL: https://issues.apache.org/jira/browse/OLINGO-297
             Project: Olingo
          Issue Type: Bug
          Components: odata2-core
    Affects Versions: V2 1.2.0
            Reporter: Vitali Yarmolik


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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