Frederik Zimmer created OLINGO-873:
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             Summary: Invalid representation of function parameters in URL
                 Key: OLINGO-873
                 URL: https://issues.apache.org/jira/browse/OLINGO-873
             Project: Olingo
          Issue Type: Bug
          Components: odata4-client
    Affects Versions: (Java) V4 4.1.0
            Reporter: Frederik Zimmer


Calling a function with a string parameter will lead to 
functionName(paramName=stringValue)
The correct version would be
functionName(paramName='stringValue')

Complex and collection parameters can only be expressed with a parameter alias. 
ABNF:
functionParameter  = parameterName EQ ( parameterAlias / primitiveLiteral ).

This is not done, so passing complex or collection parameters to a function 
call will lead to invalid urls. Example:
Calling a function with a string collection param with one value will lead to 
functionName(paramName=[stringValue])
The correct version would be:
functionName(paramName=@p)?@p=["stringValue"]

The bug is in org.apache.olingo.client.core.uri.URIUtils method 
buildFunctionInvokeURI.



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