Exceptions

class hl7apy.exceptions.HL7apyException

Base exception class for hl7apy

class hl7apy.exceptions.ParserError

Error during parsing

>>> from hl7apy.parser import parse_message
>>> m = parse_message('NOTHL7')
Traceback (most recent call last):
...
ParserError: Invalid message
class hl7apy.exceptions.UnsupportedVersion(version)

Given version is not supported

>>> from hl7apy import set_default_version
>>> set_default_version("2.0")
Traceback (most recent call last):
...
UnsupportedVersion: The version 2.0 is not supported
class hl7apy.exceptions.ChildNotFound(name)

Raised when a child element is not found in the HL7 reference structures for the given version

>>> from hl7apy.core import Segment, Field
>>> s = Segment('MSH')
>>> s.unknown = Field()
Traceback (most recent call last):
...
ChildNotFound: No child named UNKNOWN
class hl7apy.exceptions.ChildNotValid(child, parent)

Raised when you try to assign an unexpected child to an Element

>>> from hl7apy.core import Segment, Field
>>> s = Segment('PID', validation_level=1)
>>> s.pid_1 = Field('PID_34')
Traceback (most recent call last):
...
ChildNotValid: <Field PID_34 (LAST_UPDATE_FACILITY) of type HD> is not a valid child for PID_1
class hl7apy.exceptions.UnknownValidationLevel

Raised when the validation_level specified is not valid

It should be one of those defined in VALIDATION_LEVEL.

>>> from hl7apy import set_default_validation_level
>>> set_default_validation_level(3)
Traceback (most recent call last):
...
UnknownValidationLevel
class hl7apy.exceptions.OperationNotAllowed

Generic exception raised when something is not allowed

>>> from hl7apy.core import Segment
>>> s = Segment()
Traceback (most recent call last):
...
OperationNotAllowed: Cannot instantiate an unknown Segment
class hl7apy.exceptions.MaxChildLimitReached(parent, child, limit)

Raised when a child cannot be added to an instance of Element since the Element has already reached the maximum number of children allowed for the given child type (e.g. a Message should have at most 1 MSH segment)

>>> from hl7apy.core import Message, Segment
>>> m = Message("OML_O33", validation_level=1)
>>> m.add(Segment('MSH'))
Traceback (most recent call last):
...
MaxChildLimitReached: Cannot add <Segment MSH>: max limit (1) reached for <Message OML_O33>
class hl7apy.exceptions.MaxLengthReached(value, limit)

Value length exceeds its datatype max_length.

>>> from hl7apy.v2_5 import get_base_datatypes
>>> from hl7apy.consts import VALIDATION_LEVEL
>>> SI = get_base_datatypes()['SI']
>>> st = SI(value=11111, validation_level=VALIDATION_LEVEL.STRICT)
Traceback (most recent call last):
...
MaxLengthReached: The value 11111 exceed the max length: 4
class hl7apy.exceptions.InvalidName(cls, name)

Raised if the reference for the given class/name has not been found

>>> from hl7apy.core import Message
>>> Message('Unknown')
Traceback (most recent call last):
...
InvalidName: Invalid name for Message: UNKNOWN
class hl7apy.exceptions.InvalidDataType(datatype)

Raised when the currently used HL7 version does not support the given datatype

>>> from hl7apy.factories import datatype_factory
>>> datatype_factory('TN', '11 123456', version="2.3") 
<hl7apy.base_datatypes.TN object at 0x...>
>>> datatype_factory('TN', '11 123456', version="2.5")
Traceback (most recent call last):
...
InvalidDataType: The datatype TN is not available for the given HL7 version
class hl7apy.exceptions.InvalidHighlightRange(lower_bound, upper_bound)

Raised when the specified highlight range is not valid

For a description of highlight range see hl7apy.base_datatypes.TextualDataType

>>> from hl7apy.v2_5 import ST
>>> s = ST(value='some useful information', highlights=((5, 3),))
>>> s.to_er7()
Traceback (most recent call last):
...
InvalidHighlightRange: Invalid highlight range: 5 - 3
class hl7apy.exceptions.InvalidDateFormat(format)

Raised when the output format for a hl7apy.base_datatypes.DateTimeDataType is not valid

>>> from hl7apy.v2_5 import DTM
>>> DTM(value='10102013', format="%d%m%Y")
Traceback (most recent call last):
...
InvalidDateFormat: Invalid date format: %d%m%Y
class hl7apy.exceptions.InvalidDateOffset(offset)

Raised when the offset for a TM or hl7apy.base_datatypes.DTM is not valid

>>> from hl7apy.v2_5 import DTM
>>> DTM(value='20131010', format="%Y%m%d", offset='+1300')
Traceback (most recent call last):
...
InvalidDateOffset: Invalid date offset: +1300
class hl7apy.exceptions.InvalidEncodingChars

Raised when the encoding chars specified is not a correct set of HL7 encoding chars

>>> from hl7apy.core import Message
>>> encoding_chars = {'GROUP': '\r', 'SEGMENT': '\r', 'COMPONENT': '^',                           'SUBCOMPONENT': '&', 'REPETITION': '~', 'ESCAPE': '\\'}
>>> m = Message('ADT_A01', encoding_chars=encoding_chars)
Traceback (most recent call last):
...
InvalidEncodingChars: Missing required encoding chars