pynetdicom.pdu_items.ImplementationClassUIDSubItem

class pynetdicom.pdu_items.ImplementationClassUIDSubItem

An Implementation Class UID Sub-item.

The Implementation Class UID Sub-item allows communicating Application Entities to identify each other at Association establishment.

implementation_class_uid

The Implementation Class UID field value.

Type:pydicom.uid.UID or None
item_length

The number of bytes from the first byte following the Item Length field to the last byte of the Item.

Type:int
item_type

The Item Type field value (0x52).

Type:int

Notes

An Implementation Class UID Sub-item requires the following parameters:

  • Item type (1, fixed, 0x52)
  • Item length (1)
  • Implementation Class UID (1)

Encoding

When encoded, an Implementation Class UID Sub-item has the following structure, taken from Tables D.3-1 and D.3-2 [1] (offsets shown with Python indexing). Items are always encoded using Big Endian [2].

Offset Length Description
0 1 Item type
1 1 Reserved
2 2 Item length
4 Variable Implementation class UID

References

[1]DICOM Standard, Part 7, Annex D.3.3.2
[2]DICOM Standard, Part 8, Section 9.3.1
__init__()

Initialise a new Implementation Class UID Item.

Methods

__init__() Initialise a new Implementation Class UID Item.
decode(bytestream) Decode bytestream and use the result to set the field values of the PDU item.
encode() Return the encoded PDU as bytes.
from_primitive(primitive) Set the item’s values using an Implementation Identification primitive.
to_primitive() Return an Implementation Identification primitive from the current Item.

Attributes

implementation_class_uid Return the item’s Implementation Class UID field value as a UID.
item_length Return the item’s Item Length field value as an int.
item_type Return the item’s Item Type field value as an int.
decode(bytestream)

Decode bytestream and use the result to set the field values of the PDU item.

Parameters:bytestream (bytes) – The PDU data to be decoded.
encode()

Return the encoded PDU as bytes.

Returns:The encoded PDU.
Return type:bytes
from_primitive(primitive)

Set the item’s values using an Implementation Identification primitive.

Parameters:primitive (pdu_primitives.ImplementationClassUIDNotification) – The primitive to use to set the Item’s field values.
implementation_class_uid

Return the item’s Implementation Class UID field value as a UID.

item_length

Return the item’s Item Length field value as an int.

item_type

Return the item’s Item Type field value as an int.

to_primitive()

Return an Implementation Identification primitive from the current Item.

Returns:The primitive representation of the current Item.
Return type:pdu_primitives.ImplementationClassUIDNotification