public static Db.OeAsyncEnumerator ApplyBoundFunction(OeQueryContext queryContext)
{
if (queryContext.ODataUri.Path.LastSegment is OperationSegment operationSegment)
{
var edmFunction = (IEdmFunction)operationSegment.Operations.First();
MethodInfo methodInfo = queryContext.EdmModel.GetMethodInfo(edmFunction);
IReadOnlyList <KeyValuePair <String, Object> > parameterList = OeOperationHelper.GetParameters(
queryContext.EdmModel, operationSegment, queryContext.ODataUri.ParameterAliasNodes);
Db.OeBoundFunctionParameter boundFunctionParameter = OeOperationHelper.CreateBoundFunctionParameter(queryContext);
var parameters = new Object[parameterList.Count + 1];
parameters[0] = boundFunctionParameter;
for (int i = 1; i < parameters.Length; i++)
{
parameters[i] = parameterList[i - 1].Value;
}
Object result = methodInfo.Invoke(null, parameters);
queryContext.EntryFactory = boundFunctionParameter.CreateEntryFactory();
if (result is IEnumerable enumerable)
{
return(new Db.OeAsyncEnumeratorAdapter(enumerable, CancellationToken.None));
}
return(new Db.OeScalarAsyncEnumeratorAdapter(Task.FromResult(result), CancellationToken.None));
}
throw new InvalidOperationException("Path last segment not OperationSegment");
}
public Db.OeAsyncEnumerator GetAsyncEnumerator(ODataUri odataUri, Stream requestStream, OeRequestHeaders headers, Object dataContext, out bool isScalar)
{
isScalar = true;
var importSegment = (OperationImportSegment)odataUri.Path.LastSegment;
IReadOnlyList<KeyValuePair<String, Object>> parameters = OeOperationHelper.GetParameters(_edmModel, importSegment, odataUri.ParameterAliasNodes, requestStream, headers.ContentType);
IEdmOperationImport operationImport = importSegment.OperationImports.Single();
IEdmEntitySet entitySet = OeOperationHelper.GetEntitySet(operationImport);
if (entitySet == null)
{
if (operationImport.Operation.ReturnType == null)
return _dataAdapter.OperationAdapter.ExecuteProcedureNonQuery(dataContext, operationImport.Name, parameters);
Type returnType = _edmModel.GetClrType(operationImport.Operation.ReturnType.Definition);
if (operationImport.Operation.ReturnType.IsCollection())
{
isScalar = false;
returnType = typeof(IEnumerable<>).MakeGenericType(returnType);
}
if (_edmModel.IsDbFunction(operationImport.Operation))
return _dataAdapter.OperationAdapter.ExecuteFunctionPrimitive(dataContext, operationImport.Name, parameters, returnType);
else
return _dataAdapter.OperationAdapter.ExecuteProcedurePrimitive(dataContext, operationImport.Name, parameters, returnType);
}
isScalar = false;
Db.OeEntitySetAdapter entitySetAdapter = _dataAdapter.EntitySetAdapters.Find(entitySet);
if (_edmModel.IsDbFunction(operationImport.Operation))
return _dataAdapter.OperationAdapter.ExecuteFunctionReader(dataContext, operationImport.Name, parameters, entitySetAdapter);
else
return _dataAdapter.OperationAdapter.ExecuteProcedureReader(dataContext, operationImport.Name, parameters, entitySetAdapter);
}