// GetFunctionDescription returns the wrapped function description of the given function.
func (conn *Connection) GetFunctionDescription(goFuncName string) (goFuncDesc FunctionDescription, err error) {
var errorInfo C.RFC_ERROR_INFO
funcName, err := fillString(goFuncName)
defer C.free(unsafe.Pointer(funcName))
if err != nil {
return
}
if !conn.alive {
err = conn.Open()
if err != nil {
return
}
}
funcDesc := C.RfcGetFunctionDesc(conn.handle, funcName, &errorInfo)
if funcDesc == nil {
return goFuncDesc, rfcError(errorInfo, "Could not get function description for \"%v\"", goFuncName)
}
return wrapFunctionDescription(funcDesc)
}
// Call calls the given function with the given parameters and wraps the results returned.
func (conn *Connection) Call(goFuncName string, params interface{}) (result map[string]interface{}, err error) {
var errorInfo C.RFC_ERROR_INFO
funcName, err := fillString(goFuncName)
defer C.free(unsafe.Pointer(funcName))
if err != nil {
return
}
if !conn.alive {
err = conn.Open()
if err != nil {
return
}
}
funcDesc := C.RfcGetFunctionDesc(conn.handle, funcName, &errorInfo)
if funcDesc == nil {
return result, rfcError(errorInfo, "Could not get function description for \"%v\"", funcName)
}
funcCont := C.RfcCreateFunction(funcDesc, &errorInfo)
if funcCont == nil {
return result, rfcError(errorInfo, "Could not create function")
}
defer C.RfcDestroyFunction(funcCont, nil)
paramsValue := reflect.ValueOf(params)
if paramsValue.Type().Kind() == reflect.Map {
keys := paramsValue.MapKeys()
if len(keys) > 0 {
if keys[0].Kind() == reflect.String {
for _, nameValue := range keys {
fieldName := nameValue.String()
fieldValue := paramsValue.MapIndex(nameValue).Interface()
err = fillFunctionParameter(funcDesc, funcCont, fieldName, fieldValue)
if err != nil {
return
}
}
} else {
return result, rfcError(errorInfo, "Could not fill parameters passed as map with non-string keys")
}
}
} else if paramsValue.Type().Kind() == reflect.Struct {
for i := 0; i < paramsValue.NumField(); i++ {
fieldName := paramsValue.Type().Field(i).Name
fieldValue := paramsValue.Field(i).Interface()
err = fillFunctionParameter(funcDesc, funcCont, fieldName, fieldValue)
if err != nil {
return
}
}
} else {
return result, rfcError(errorInfo, "Parameters can only be passed as types map[string]interface{} or go-structures")
}
rc := C.RfcInvoke(conn.handle, funcCont, &errorInfo)
if rc != C.RFC_OK {
return result, rfcError(errorInfo, "Could not invoke function \"%v\"", goFuncName)
}
if conn.returnImportParams {
return wrapResult(funcDesc, funcCont, (C.RFC_DIRECTION)(0), conn.rstrip)
}
return wrapResult(funcDesc, funcCont, C.RFC_IMPORT, conn.rstrip)
}