OPC Studio User's Guide and Reference
IsStrictlyPhysical Method (_UAPubSubConnectionDescriptor)



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA.PubSub.ComTypes Namespace > _UAPubSubConnectionDescriptor Interface : IsStrictlyPhysical Method
The URI string of the PubSub transport profile.

The value of this parameter can be null (Nothing in Visual Basic).

Determines whether the (standard) topic tree is used.
Determines whether this PubSub object descriptor is strictly physical with specified transport profile URI string.
Syntax
'Declaration
 
Function IsStrictlyPhysical( _
   ByVal transportProfileUriString As String, _
   ByVal assumeTopicTree As Boolean _
) As Boolean
'Usage
 
Dim instance As _UAPubSubConnectionDescriptor
Dim transportProfileUriString As String
Dim assumeTopicTree As Boolean
Dim value As Boolean
 
value = instance.IsStrictlyPhysical(transportProfileUriString, assumeTopicTree)

Parameters

transportProfileUriString
The URI string of the PubSub transport profile.

The value of this parameter can be null (Nothing in Visual Basic).

assumeTopicTree
Determines whether the (standard) topic tree is used.
Exceptions
ExceptionDescription

A null reference (Nothing in Visual Basic) is passed to a method that does not accept it as a valid argument.

This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception.

Remarks

The default behavior is that for a PubSub object descriptor to be strictly physical, it must not have a (non-empty) logical name. The behavior of derived descriptors may differ.

When topic tree is assumed (assumeTopicTree is true), the default behavior is that the PubSub object descriptor is always strictly physical.

This method is pure, i.e. it does not have observable side effects.

This member or type is for use from COM. It is not meant to be used from .NET or Python. Refer to the corresponding .NET member or type instead, if you are developing in .NET or Python.

Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows

See Also