def _get_sdef(self, node, obj):
if not obj.definitions:
return None
sdef = ua.StructureDefinition()
if obj.parent:
sdef.BaseDataType = obj.parent
for data in obj.refs:
if data.reftype == self.server.nodes.HasEncoding.nodeid:
# looks likebinary encodingisthe firt one...can someone confirm?
sdef.DefaultEncodingId = data.target
break
optional = False
for field in obj.definitions:
f = ua.StructureField()
f.Name = field.name
f.DataType = field.datatype
f.ValueRank = field.valuerank
f.IsOptional = field.optional
if f.IsOptional:
optional = True
f.ArrayDimensions = field.arraydim
f.Description = ua.LocalizedText(text=field.desc)
sdef.Fields.append(f)
if optional:
sdef.StructureType = ua.StructureType.StructureWithOptionalFields
else:
sdef.StructureType = ua.StructureType.Structure
return sdef
def _get_sdef(self, obj):
if not obj.definitions:
return None
sdef = ua.StructureDefinition()
if obj.parent:
sdef.BaseDataType = obj.parent
for refdata in obj.refs:
if refdata.reftype == self.server.nodes.HasEncoding.nodeid:
# supposing that default encoding is the first one...
sdef.DefaultEncodingId = refdata.target
break
optional = False
for field in obj.definitions:
f = ua.StructureField()
f.Name = field.name
f.DataType = field.datatype
f.ValueRank = field.valuerank
f.IsOptional = field.optional
if f.IsOptional:
optional = True
if field.arraydim is None:
f.ArrayDimensions = field.arraydim
else:
f.ArrayDimensions = [int(i) for i in field.arraydim.split(",")]
f.Description = ua.LocalizedText(Text=field.desc)
sdef.Fields.append(f)
if obj.struct_type == "IsUnion":
sdef.StructureType = ua.StructureType.Union
elif optional or obj.struct_type == "IsOptional":
sdef.StructureType = ua.StructureType.StructureWithOptionalFields
else:
sdef.StructureType = ua.StructureType.Structure
return sdef
def new_struct_field(
name: str,
dtype: Union[ua.NodeId, Node, ua.VariantType],
array: bool = False,
optional: bool = False,
description: str = "",
) -> ua.StructureField:
"""
simple way to create a StructureField
"""
field = ua.StructureField()
field.Name = name
field.IsOptional = optional
if description:
field.Description = ua.LocalizedText(Text=description)
else:
field.Description = ua.LocalizedText(Text=name)
if isinstance(dtype, ua.VariantType):
field.DataType = ua.NodeId(dtype.value, 0)
elif isinstance(dtype, ua.NodeId):
field.DataType = dtype
elif isinstance(dtype, Node):
field.DataType = dtype.nodeid
else:
raise ValueError(f"DataType of a field must be a NodeId, not {dtype} of type {type(dtype)}")
if array:
field.ValueRank = ua.ValueRank.OneOrMoreDimensions
field.ArrayDimensions = [1]
else:
field.ValueRank = ua.ValueRank.Scalar
field.ArrayDimensions = None
return field
