public OperationImportSegment(IEnumerable <IEdmOperationImport> operationImports, IEdmEntitySetBase entitySet)
: this()
{
// DEVNOTE: This ctor is only used in Select and Expand currently.
ExceptionUtils.CheckArgumentNotNull(operationImports, "operations");
this.operationImports = new ReadOnlyCollection <IEdmOperationImport>(operationImports.ToList());
// check for empty after we copy locally, so that we don't do multiple enumeration of input
ExceptionUtils.CheckArgumentCollectionNotNullOrEmpty(this.operationImports, "operations");
// Determine the return type of the operation. This is only possible if all the candidate operations agree on the return type.
// TODO: Because we work on types and not type references, if there are nullability differences we'd ignore them...
IEdmType typeSoFar = this.operationImports.First().Operation.ReturnType != null
? this.operationImports.First().Operation.ReturnType.Definition
: null;
if (typeSoFar == null)
{
// This is for void operations
if (this.operationImports.Any(operation => operation.Operation.ReturnType != null))
{
typeSoFar = UnknownSentinel;
}
}
else if (this.operationImports.Any(operationImport => !typeSoFar.IsEquivalentTo(operationImport.Operation.ReturnType.Definition)))
{
typeSoFar = UnknownSentinel;
}
this.computedReturnEdmType = typeSoFar;
this.entitySet = entitySet;
this.EnsureTypeAndSetAreCompatable();
}