Problem when using an abstract type (e.g.Integer) as a method parameter.

[ChSch]

Ok, the new Modler 1.2.0 solved several problems that I had.
But there is still a problem when I use an abstract type (e.g.Integer) as a method parameter.
I have the following testMethod:
virtual UaStatus testMethod(const ServiceContext& serviceContext,
/*IN*/ OpcUa_Double IntegerArgument,
/*IN*/ OpcUa_Int32 Int32Argument,
/*IN*/ const UaInt32Array& Int32Argument_array);

If I change the type of IntegerArgument form Double to Integer, then in the generated h-file stands:
// MyExampleTyp method testMethod
//DataType not supported

I think there is no way to fix this so far. If I try to change the type after the code generation from Double to Integer, I get problems because the type is used in other parts of the code too.

I think I will use a subtype of Integer until the modeler can handle this.


Best regards

[Support Team]

Hi ChSch,

The Cpp Server Templates 1.3.1 do not support method calls with arguments with abstract DataTypes. If you want to use an abstract DataType like Integer, you have to

• Create the method with a non-abstract DataType like Double
• Generate the code
• Replace OpcUa_Double by OpcUa_Integer in the "initialize" and "createTypes" method
• Use UaVariant instead of OpcUa_Double for the arguments in "beginCall"
• Check the type like

  Code: Select all

  switch (IntegerArgument.type())
  {
  case OpcUaType_SByte:
  case OpcUaType_Int16:
  case OpcUaType_Int32:
  case OpcUaType_Int64:
  case OpcUaType_Byte:
  case OpcUaType_UInt16:
  case OpcUaType_UInt32
  case OpcUaType_UInt64:
      tmpRet = OpcUa_Good;
      break;
  default:
      tmpRet = OpcUa_BadTypeMismatch;
  }
  if (IntegerArgument.arrayType() != OpcUa_VariantArrayType_Scalar)
  {
      tmpRet = OpcUa_BadTypeMismatch;
  }
  inputArgumentResults[ 0 ] = tmpRet.statusCode();
  if (tmpRet.isNotGood()) {ret = tmpRet;}
  

• Use UaVariant instead of OpcUa_Double in the method

Note: You have to write your own test client to test the method. Most Clients - like UaExpert - cannot display values of abstract data types.