def get_references(self,
refs=ua.ObjectIds.References,
direction=ua.BrowseDirection.Both,
nodeclassmask=ua.NodeClass.Unspecified,
includesubtypes=True):
"""
returns references of the node based on specific filter defined with:
refs = ObjectId of the Reference
direction = Browse direction for references
nodeclassmask = filter nodes based on specific class
includesubtypes = If true subtypes of the reference (ref) are also included
"""
desc = ua.BrowseDescription()
desc.BrowseDirection = direction
desc.ReferenceTypeId = ua.TwoByteNodeId(refs)
desc.IncludeSubtypes = includesubtypes
desc.NodeClassMask = nodeclassmask
desc.ResultMask = ua.BrowseResultMask.All
desc.NodeId = self.nodeid
params = ua.BrowseParameters()
params.View.Timestamp = ua.win_epoch_to_datetime(0)
params.NodesToBrowse.append(desc)
results = self.server.browse(params)
return results[0].References
def get_children_descriptions(self,
refs=ua.ObjectIds.HierarchicalReferences,
nodeclassmask=ua.NodeClass.Unspecified,
includesubtypes=True):
"""
return all attributes of child nodes as UA BrowseResult structs
"""
desc = ua.BrowseDescription()
desc.BrowseDirection = ua.BrowseDirection.Forward
desc.ReferenceTypeId = ua.TwoByteNodeId(refs)
desc.IncludeSubtypes = includesubtypes
desc.NodeClassMask = nodeclassmask
desc.ResultMask = ua.BrowseResultMask.All
desc.NodeId = self.nodeid
params = ua.BrowseParameters()
params.View.Timestamp = ua.win_epoch_to_datetime(0)
params.NodesToBrowse.append(desc)
results = self.server.browse(params)
return results[0].References
