4.25 Bind Custom UriFunctions to CLR Methods

Since Web API OData V5.9.0, it supports to bind the custom UriFunctions to CLR methods now, so user can add,modify or override the existing pre defined built-in functions.

Let’s see how to use this feature.

FunctionSignatureWithReturnType padrightStringEdmFunction =
                     new FunctionSignatureWithReturnType(
                    EdmCoreModel.Instance.GetString(true),
                    EdmCoreModel.Instance.GetString(true),
                    EdmCoreModel.Instance.GetInt32(false));
 
MethodInfo padRightStringMethodInfo = typeof(string).GetMethod("PadRight", new Type[] { typeof(int) });
const string padrightMethodName = "padright";
ODataUriFunctions.AddCustomUriFunction(padrightMethodName, padrightStringEdmFunction, padRightStringMethodInfo);

Then you can use filter function like $filter=padright(ProductName, 5) eq 'Abcd'.

Related Issue #612.