VDAValidator Class

Properties Methods Events Config Settings Errors

VDAValidator is a lightweight EDI validation class designed for simple document validation.

Syntax

class ipworksedi.VDAValidator

Remarks

This component provides a simple way to validate an EDI document and obtain details about any validation errors.

EDI Validation

Before calling validate set schema_format and call load_schema to load the schema for the document to be validated. The schema defines many validation rules such as minimum and maximum lengths, minimum and maximum occurrences, and more. The validation performed by the class depends largely on the schema's definition.

When the validate method is called the class will attempt to validate the document. If errors are found during validation the on_validation_error event will fire with details about each error as it is encountered. After the document has been validated the validation_errors property will be populated with details of each error.

Inspect the validation_errors property for information on any errors that were encountered.

Validation Example validator.InputFile = "files/EDIDocuments/MyEDIDoc.txt"; validator.LoadSchema("my_schemas/00501/RSSBus_005010X222A1_837.json"); validator.Validate(); foreach (ValidationErrorDetail error in validator.ValidationErrors) { Console.WriteLine(error.ErrorCode + ": " + error.Message); }

Property List

The following is the full list of the properties of the class with short descriptions. Click on the links for further details.


edi_standard_version	The version of the EDI specification.
input_data	The data to parse.
input_file	The file to parse.
schema_format	The format of the schema file.
validation_error_count	The number of records in the ValidationError arrays.
validation_error_column	The column number in the EDI document where the error occurred.
validation_error_element_error_code	The error code which may be used in the IK403 property of a 999.
validation_error_element_position	This property holds the position of the element where the error occurred.
validation_error_error_code	The ErrorCode property contains the type of error encountered.
validation_error_line	The line number in the EDI document where the error occurred.
validation_error_message	Message is a textual description of the error.
validation_error_segment_error_code	The error code which may be used in the IK304 property of a 999.
validation_error_segment_number	This property is the index of the segment where the error occurred.
validation_error_segment_tag	This property specifies the tag name of the segment where the error occurred.
validation_error_technical_error_code	This property holds a technical error code that helps identify structural issues with the document.

Method List

The following is the full list of the methods of the class with short descriptions. Click on the links for further details.


compile_schema	Compiles an existing XSD schema into an optimized binary representation.
config	Sets or retrieves a configuration setting.
display_schema_info	Returns a string showing the structure of the schema defining the document.
display_xml_info	Returns a string showing the structure of the parsed document as XML.
flush	Flushes the parser and checks its end state.
load_schema	Loads a schema file describing a Transaction Set.
reset	Resets the parser.
validate	Validates the specified EDI document.

Event List

The following is the full list of the events fired by the class with short descriptions. Click on the links for further details.


on_end_functional_group	Fires whenever a control segment is read that marks the end of an interchange.
on_end_interchange	Fires whenever a control segment is read that marks the end of an interchange.
on_end_loop	Fires when the end of a loop is detected in a transaction set.
on_end_transaction	Fires whenever a control segment is read that marks the end of a transaction.
on_error	Fired when information is available about errors during data delivery.
on_resolve_schema	Fires whenever a new transaction set is encountered and no schema is found for it.
on_segment	Fires whenever a data segment in a transaction set is read.
on_start_functional_group	Fires whenever a control segment is read that marks the start of a functional group.
on_start_interchange	Fires whenever a control segment is read that marks the start of an interchange.
on_start_loop	Fires when the starting of a loop is detected in a transaction set.
on_start_transaction	Fires whenever a control segment is read that marks the start of a transaction.
on_validation_error	Fires whenever a validation error is encountered.

Config Settings

The following is a list of config settings for the class with short descriptions. Click on the links for further details.


ComponentDelimiter	The delimiter separating classes.
CrossFieldValidationEnabled	Enables cross-field validation rules.
ElementDelimiter	The delimiter character separating data elements.
Encoding	The character encoding to be applied when reading and writing data.
ExtraData	Extra data that has not been parsed by the class.
HasXPath	Determines if the specified XPath exists.
ISA11IsRepetitionSeparator	Specifies whether the ISA11 value is treated as a Repetition Separator or Standard Identifier.
MaxValidationErrors	The maximum number of errors to save in the ValidationErrors property.
ReleaseChar	The character used to escape delimiters within values.
ResolveXPathOnSet	Determines whether or not the XPath is resolved when set.
SegmentDelimiter	The delimiter character separating segments within the EDI document.
StrictSchemaValidation	Specifies the behavior during schema validation.
BuildInfo	Information about the product's build.
CodePage	The system code page used for Unicode to Multibyte translations.
LicenseInfo	Information about the current license.
MaskSensitive	Whether sensitive data is masked in log messages.
ProcessIdleEvents	Whether the class uses its internal event loop to process events when the main thread is idle.
SelectWaitMillis	The length of time in milliseconds the class will wait when DoEvents is called if there are no events to process.
UseFIPSCompliantAPI	Tells the class whether or not to use FIPS certified APIs.
UseInternalSecurityAPI	Whether or not to use the system security libraries or an internal implementation.

edi_standard_version Property

The version of the EDI specification.

Syntax

def get_edi_standard_version() -> str: ...

edi_standard_version = property(get_edi_standard_version, None)

Default Value

Remarks

This property will be populated after parsing begins and the correct version string for is located via the schema, such as 004010 for X12.

This property is read-only.

input_data Property

The data to parse.

Syntax

def get_input_data() -> str: ...
def set_input_data(value: str) -> None: ...

input_data = property(get_input_data, set_input_data)

Default Value

Remarks

This property specifies the data to be parsed.

Input Properties

The class will determine the source of the input based on which properties are set.

The order in which the input properties are checked is as follows:

input_file
input_data

When a valid source is found the search stops.

input_file Property

The file to parse.

Syntax

def get_input_file() -> str: ...
def set_input_file(value: str) -> None: ...

input_file = property(get_input_file, set_input_file)

Default Value

Remarks

This property specifies the file to be processed. Set this property to the full or relative path to the file which will be processed.

Input Properties

The class will determine the source of the input based on which properties are set.

The order in which the input properties are checked is as follows:

input_file
input_data

When a valid source is found the search stops.

schema_format Property

The format of the schema file.

Syntax

def get_schema_format() -> int: ...
def set_schema_format(value: int) -> None: ...

schema_format = property(get_schema_format, set_schema_format)

Default Value

Remarks

Set schema_format before calling the load_schema method to specify the loading schema format.

The following schema formats are supported:


0 (schemaAutomatic - default)	The schema type is automatically determined based on file extension.
1 (schemaBinary)	A binary schema that was previously compiled by calling compile_schema.
2 (schemaBizTalk)	BizTalk (XSD): http://msdn.microsoft.com/en-us/library/aa559426(v=BTS.70).aspx
3 (schemaSEF)	TIBCO Standard Exchange Format (SEF): https://docs.tibco.com/products/tibco-foresight-edisim-6-18-0
5 (schemaAltova)	Altova: http://www.altova.com/
6 (schemaJSON)	JSON

validation_error_count Property

The number of records in the ValidationError arrays.

Syntax

def get_validation_error_count() -> int: ...

validation_error_count = property(get_validation_error_count, None)

Default Value

Remarks

This property controls the size of the following arrays:

validation_error_column
validation_error_element_error_code
validation_error_element_position
validation_error_error_code
validation_error_line
validation_error_message
validation_error_segment_error_code
validation_error_segment_number
validation_error_segment_tag
validation_error_technical_error_code

The array indices start at 0 and end at validation_error_count - 1.

This property is read-only.

validation_error_column Property

The column number in the EDI document where the error occurred.

Syntax

def get_validation_error_column(validation_error_index: int) -> int: ...

Default Value

Remarks

The column number in the EDI document where the error occurred. This value may be used in conjunction with the validation_error_line property to determine the exact location within the EDI document where the error occurred.

The validation_error_index parameter specifies the index of the item in the array. The size of the array is controlled by the validation_error_count property.

This property is read-only.

validation_error_element_error_code Property

The error code which may be used in the IK403 property of a 999.

Syntax

def get_validation_error_element_error_code(validation_error_index: int) -> str: ...

Default Value

Remarks

The error code which may be used in the IK403 field of a 999.

Note: This property is specific to X12 documents and is not applicable to other document types.

The validation_error_index parameter specifies the index of the item in the array. The size of the array is controlled by the validation_error_count property.

This property is read-only.

validation_error_element_position Property

This property holds the position of the element where the error occurred.

Syntax

def get_validation_error_element_position(validation_error_index: int) -> int: ...

Default Value

Remarks

This property holds the position of the element where the error occurred.

The validation_error_index parameter specifies the index of the item in the array. The size of the array is controlled by the validation_error_count property.

This property is read-only.

validation_error_error_code Property

The ErrorCode property contains the type of error encountered.

Syntax

def get_validation_error_error_code(validation_error_index: int) -> int: ...

Default Value

Remarks

The validation_error_error_code property contains the type of error encountered. Possible values are:


0	The component is not required but is present.
1	Invalid segment count.
2	Invalid transaction count.
3	Invalid group count.
4	Invalid interchange control number.
5	Invalid group control number.
6	Invalid transaction control number.
10	A required data element is missing.
11	Invalid field length.
12	Invalid field value.
13	A required component is missing.
14	The data element is not defined but is present.
30	Required segment is missing.
31	Required loop is missing.
32	Occurrences exceeds the schema defined limit.
33	Occurrences is less than the schema defined minimum.
40	Paired rule validation failed, the pair of elements must be present.
41	At least one of element is required, see message for list of elements.
42	Exclusion validation failed, only one of the elements can be present.
43	Conditional rule validation failed.
44	List conditional rule validation failed.
45	First then none validation failed. The presence of an element requires that other specific elements must not be present.
46	Only one or none of the elements can be present.

The validation_error_index parameter specifies the index of the item in the array. The size of the array is controlled by the validation_error_count property.

This property is read-only.

validation_error_line Property

The line number in the EDI document where the error occurred.

Syntax

def get_validation_error_line(validation_error_index: int) -> int: ...

Default Value

Remarks

The line number in the EDI document where the error occurred. This value may be used in conjunction with the validation_error_column property to determine the exact location within the EDI document where the error occurred.

The validation_error_index parameter specifies the index of the item in the array. The size of the array is controlled by the validation_error_count property.

This property is read-only.

validation_error_message Property

Message is a textual description of the error.

Syntax

def get_validation_error_message(validation_error_index: int) -> str: ...

Default Value

Remarks

validation_error_message is a textual description of the error.

The validation_error_index parameter specifies the index of the item in the array. The size of the array is controlled by the validation_error_count property.

This property is read-only.

validation_error_segment_error_code Property

The error code which may be used in the IK304 property of a 999.

Syntax

def get_validation_error_segment_error_code(validation_error_index: int) -> str: ...

Default Value

Remarks

The error code which may be used in the IK304 field of a 999.

Note: This property is specific to X12 documents and is not applicable to other document types.

The validation_error_index parameter specifies the index of the item in the array. The size of the array is controlled by the validation_error_count property.

This property is read-only.

validation_error_segment_number Property

This property is the index of the segment where the error occurred.

Syntax

def get_validation_error_segment_number(validation_error_index: int) -> int: ...

Default Value

Remarks

This property is the index of the segment where the error occurred.

The validation_error_index parameter specifies the index of the item in the array. The size of the array is controlled by the validation_error_count property.

This property is read-only.

validation_error_segment_tag Property

This property specifies the tag name of the segment where the error occurred.

Syntax

def get_validation_error_segment_tag(validation_error_index: int) -> str: ...

Default Value

Remarks

This property specifies the tag name of the segment where the error occurred.

The validation_error_index parameter specifies the index of the item in the array. The size of the array is controlled by the validation_error_count property.

This property is read-only.

validation_error_technical_error_code Property

This property holds a technical error code that helps identify structural issues with the document.

Syntax

def get_validation_error_technical_error_code(validation_error_index: int) -> str: ...

Default Value

Remarks

This property holds a technical error code that helps identify structural issues with the document. For instance when parsing an X12 document this will hold values that may be used for TA1 error codes.

Note: This property is specific to X12 documents and is not applicable to other document types.

Possible values are:


001	The Interchange Control Numbers in the header ISA 13 and trailer IEA02 do not match.
014	Invalid interchange date value (non-numeric characters or wrong length).
015	Invalid interchange time value (non-numeric characters or wrong length).
022	The ISA segment is missing elements (invalid control structure).
024	Invalid interchange content (e.g., Invalid GS segment).

The validation_error_index parameter specifies the index of the item in the array. The size of the array is controlled by the validation_error_count property.

This property is read-only.

compile_schema Method

Compiles an existing XSD schema into an optimized binary representation.

Syntax

def compile_schema(xsd_schema: str, bin_schema: str) -> None: ...

Remarks

This method parses XsdSchema and generates an optimized binary representation that is saved into the path referenced by BinSchema. Binary schemas are smaller and require less resources when loading later using load_schema

If the schema file does not exists or cannot be parsed as an EDI schema, the component throws an exception.

config Method

Sets or retrieves a configuration setting.

Syntax

def config(configuration_string: str) -> str: ...

Remarks

config is a generic method available in every class. It is used to set and retrieve configuration settings for the class.

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the class, access to these internal properties is provided through the config method.

To set a configuration setting named PROPERTY, you must call Config("PROPERTY=VALUE"), where VALUE is the value of the setting expressed as a string. For boolean values, use the strings "True", "False", "0", "1", "Yes", or "No" (case does not matter).

To read (query) the value of a configuration setting, you must call Config("PROPERTY"). The value will be returned as a string.

display_schema_info Method

Returns a string showing the structure of the schema defining the document.

Syntax

def display_schema_info() -> str: ...

Remarks

After calling load_schema this may be called to obtain information about the structure of the schema defining the document. If the desired xpath is not known this helps determine the structure so that the correct xpath can be built.

Note: A valid schema must be loaded via load_schema.

For instance: Console.WriteLine(component.DisplaySchemaInfo()); Will output text like:

  ST[0,1]
  BIG[0,1]
  NTE[0,100]
  CUR[0,1]
  REF[0,12]
  YNQ[0,10]
  PER[0,3]
  N1Loop1[0,200]
    N1[0,1]
    N2[0,2]
    N3[0,2]
    N4[0,1]
    REF_2[0,12]
    PER_2[0,3]
    DMG[0,1]
  ITD[0,999999]
  DTM[0,10]
  FOB[0,1]
  PID[0,200]
  MEA[0,40]
  PWK[0,25]
  PKG[0,25]
  L7[0,1]
  BAL[0,999999]
  INC[0,1]
  PAM[0,999999]
  LMLoop1[0,10]
    LM[0,1]
    LQ[0,100]
  N9Loop1[0,1]
    N9[0,1]
    MSG[0,10]
  V1Loop1[0,999999]
    V1[0,1]
    R4[0,999999]
    DTM_2[0,999999]
  FA1Loop1[0,999999]
    FA1[0,1]
    FA2[0,999999]
  IT1Loop1[0,200000]
    IT1[0,1]
    CRC[0,1]
    QTY[0,5]
    CUR_2[0,1]
    IT3[0,5]
    TXI[0,10]
    CTP[0,25]
    PAM_2[0,10]
    MEA_2[0,40]
    PIDLoop1[0,1000]
      PID_2[0,1]
      MEA_3[0,10]
    PWK_2[0,25]
    PKG_2[0,25]
    PO4[0,1]
    ITD_2[0,2]
    REF_3[0,999999]
    YNQ_2[0,10]
    PER_3[0,5]
    SDQ[0,500]
    DTM_3[0,10]
    CAD[0,999999]
    L7_2[0,999999]
    SR[0,1]
    SACLoop1[0,25]
      SAC[0,1]
      TXI_2[0,10]
    SLNLoop1[0,1000]
      SLN[0,1]
      DTM_4[0,1]
      REF_4[0,999999]
      PID_3[0,1000]
      SAC_2[0,25]
      TC2[0,2]
      TXI_3[0,10]
    N1Loop2[0,200]
      N1_2[0,1]
      N2_2[0,2]
      N3_2[0,2]
      N4_2[0,1]
      REF_5[0,12]
      PER_4[0,3]
      DMG_2[0,1]
    LMLoop2[0,10]
      LM_2[0,1]
      LQ_2[0,100]
    V1Loop2[0,999999]
      V1_2[0,1]
      R4_2[0,999999]
      DTM_5[0,999999]
    FA1Loop2[0,999999]
      FA1_2[0,1]
      FA2_2[0,999999]
  TDS[0,1]
  TXI_4[0,10]
  CAD_2[0,1]
  AMT[0,999999]
  SACLoop2[0,25]
    SAC_3[0,1]
    TXI_5[0,10]
  ISSLoop1[0,999999]
    ISS[0,1]
    PID_4[0,1]
  CTT[0,1]
  SE[0,1]

display_xml_info Method

Returns a string showing the structure of the parsed document as XML.

Syntax

def display_xml_info() -> str: ...

Remarks

After the EDI document has been parsed this method may be called to obtain information about the document structure. The parsed data is represented as XML when queried. This shows all parsed data and may be useful for testing and debugging purposes. For instance: Console.WriteLine(component.DisplayXMLInfo()); Will output text like:

<IX tag="ISA" ISA01="00" ISA02="          " ISA03="00" ISA04="          " ISA05="ZZ" ISA06="ACME           " ISA07="ZZ" ISA08="WAYNE_TECH     " ISA09="160707" ISA10="1544" ISA11="U" ISA12="00401" ISA13="000000006" ISA14="0" ISA15="T" ISA16=">">
  <FG tag="GS" GS01="IN" GS02="ACME" GS03="WAYNE_TECH" GS04="20160707" GS05="1544" GS06="6" GS07="T" GS08="004010">
    <TX tag="ST" ST01="810" ST02="0001">
      <BIG tag="BIG" BIG01="20150708" BIG02="3003014445" BIG03="" BIG04="0476553272" BIG05="" BIG06="" BIG07="DR"/>
      <CUR tag="CUR" CUR01="SE" CUR02="USD"/>
      <REF tag="REF" REF01="8M" REF02="0056"/>
      <N1Loop1>
        <N1 tag="N1" N101="BY" N102="Company" N103="92" N104="544380"/>
        <N3 tag="N3" N301="Address"/>
        <N4 tag="N4" N401="City" N402="CA" N403="Postal Code"/>
      </N1Loop1>
      <N1Loop1>
        <N1 tag="N1" N101="ST" N102="Name" N103="92" N104="0607047800010"/>
        <N3 tag="N3" N301="Address"/>
        <N4 tag="N4" N401="City" N402="" N403="200131" N404="US"/>
      </N1Loop1>
      <N1Loop1>
        <N1 tag="N1" N101="RE" N102="Name" N103="92" N104="5095956"/>
        <N3 tag="N3" N301="Address"/>
        <N4 tag="N4" N401="City" N402="IL" N403="Postal Code"/>
      </N1Loop1>
      <IT1Loop1>
        <IT1 tag="IT1" IT101="20" IT102="2500" IT103="EA" IT104="36.96" IT105="" IT106="BP" IT107="335S0594"/>
        <REF_3 tag="REF" REF01="KK" REF02="0099778154"/>
        <REF_3 tag="REF" REF01="PO" REF02="0476553272" REF03="20"/>
      </IT1Loop1>
      <TDS tag="TDS" TDS01="9240000"/>
      <CTT tag="CTT" CTT01="1"/>
    </TX>
  </FG>
</IX>

flush Method

Flushes the parser and checks its end state.

Syntax

def flush() -> None: ...

Remarks

When flush is called, the parser flushes all its buffers, firing events as necessary, and then checks its end state.

Any extra un-parsed data will be populated in the extra_data property after this method is called.

load_schema Method

Loads a schema file describing a Transaction Set.

Syntax

def load_schema(file_name: str) -> None: ...

Remarks

This method parses the File and loads it into an internal schema list. The class will attempt to automatically detect the schema_format.

If the schema file does not exist or cannot be parsed as an EDI schema, the class fails with an error.

reset Method

Resets the parser.

Syntax

def reset() -> None: ...

Remarks

When called, the parser flushes all its buffers, firing events as necessary, and then initializes itself to its default state.

reset must also be used as signal to the parser that the current stream of text has terminated.

validate Method

Validates the specified EDI document.

Syntax

def validate() -> None: ...

Remarks

This method validates the EDI document specified by input_file or input_data.

Inspect the validation_errors property for information on any errors that were encountered.

on_end_functional_group Event

Fires whenever a control segment is read that marks the end of an interchange.

Syntax

class VDAValidatorEndFunctionalGroupEventParams(object):
  @property
  def tag() -> str: ...

  @property
  def control_number() -> str: ...

  @property
  def count() -> int: ...

  @property
  def full_segment() -> str: ...

# In class VDAValidator:
@property
def on_end_functional_group() -> Callable[[VDAValidatorEndFunctionalGroupEventParams], None]: ...
@on_end_functional_group.setter
def on_end_functional_group(event_hook: Callable[[VDAValidatorEndFunctionalGroupEventParams], None]) -> None: ...

Remarks

The on_end_functional_group event will fire when a control segment marking the end of a functional group is read. The Tag parameter contains the tag of the segment, such as GE. ControlNumber contains the control number associated with the segment, and links this event with the corresponding on_start_functional_group event. Count contains the value of the count element included in the closing segment, which identifies the number of transactions in a functional group.

on_end_interchange Event

Fires whenever a control segment is read that marks the end of an interchange.

Syntax

class VDAValidatorEndInterchangeEventParams(object):
  @property
  def tag() -> str: ...

  @property
  def control_number() -> str: ...

  @property
  def full_segment() -> str: ...

# In class VDAValidator:
@property
def on_end_interchange() -> Callable[[VDAValidatorEndInterchangeEventParams], None]: ...
@on_end_interchange.setter
def on_end_interchange(event_hook: Callable[[VDAValidatorEndInterchangeEventParams], None]) -> None: ...

Remarks

The on_end_interchange event will fire when a control segment marking the end of an interchange is read. The Tag parameter contains the tag of the segment, such as IEA. ControlNumber contains the control number associated with the segment, and links this event with the corresponding on_start_interchange event.

on_end_loop Event

Fires when the end of a loop is detected in a transaction set.

Syntax

class VDAValidatorEndLoopEventParams(object):
# In class VDAValidator:
@property
def on_end_loop() -> Callable[[VDAValidatorEndLoopEventParams], None]: ...
@on_end_loop.setter
def on_end_loop(event_hook: Callable[[VDAValidatorEndLoopEventParams], None]) -> None: ...

Remarks

The on_end_loop event will fire after the last segment in a loop is read. Each on_end_loop event is paired with one on_start_loop event.

on_end_transaction Event

Fires whenever a control segment is read that marks the end of a transaction.

Syntax

class VDAValidatorEndTransactionEventParams(object):
  @property
  def tag() -> str: ...

  @property
  def control_number() -> str: ...

  @property
  def count() -> int: ...

  @property
  def full_segment() -> str: ...

# In class VDAValidator:
@property
def on_end_transaction() -> Callable[[VDAValidatorEndTransactionEventParams], None]: ...
@on_end_transaction.setter
def on_end_transaction(event_hook: Callable[[VDAValidatorEndTransactionEventParams], None]) -> None: ...

Remarks

The on_end_transaction event will fire when a control segment marking the end of a transaction is read. The Tag parameter contains the tag of the segment, such as SE. ControlNumber contains the control number associated with the segment, and links this event with the corresponding on_start_transaction event. Count contains the value of the count element included in the closing segment, which identifies the number of segments in a transaction set.

on_error Event

Fired when information is available about errors during data delivery.

Syntax

class VDAValidatorErrorEventParams(object):
  @property
  def error_code() -> int: ...

  @property
  def description() -> str: ...

# In class VDAValidator:
@property
def on_error() -> Callable[[VDAValidatorErrorEventParams], None]: ...
@on_error.setter
def on_error(event_hook: Callable[[VDAValidatorErrorEventParams], None]) -> None: ...

Remarks

The on_error event is fired in case of exceptional conditions during message processing. Normally the class fails with an error.

The ErrorCode parameter contains an error code, and the Description parameter contains a textual description of the error. For a list of valid error codes and their descriptions, please refer to the Error Codes section.

The on_error event is fired in case of exceptional conditions during message processing. Normally the class fails with an error.

on_resolve_schema Event

Fires whenever a new transaction set is encountered and no schema is found for it.

Syntax

class VDAValidatorResolveSchemaEventParams(object):
  @property
  def transaction_code() -> str: ...

  @property
  def standard_version() -> str: ...

# In class VDAValidator:
@property
def on_resolve_schema() -> Callable[[VDAValidatorResolveSchemaEventParams], None]: ...
@on_resolve_schema.setter
def on_resolve_schema(event_hook: Callable[[VDAValidatorResolveSchemaEventParams], None]) -> None: ...

Remarks

The on_resolve_schema event will fire when a the class encounters the header segment of a new transaction set, but it finds no schema corresponding to it already loaded.

TransactionCode contains the code of the transaction, such as "810" or "APERAK".

StandardVersion contains the version of the transaction, such as "004010" or "D95A".

When processing this event, the caller can use load_schema() to load a new schema into the class that can be used to parse the transaction.

After the event fires, if the class still doesn't have a matching schema, then it will attempt schema-less parsing of the transaction set.

on_segment Event

Fires whenever a data segment in a transaction set is read.

Syntax

class VDAValidatorSegmentEventParams(object):
  @property
  def tag() -> str: ...

  @property
  def name() -> str: ...

  @property
  def loop_name() -> str: ...

  @property
  def full_segment() -> str: ...

# In class VDAValidator:
@property
def on_segment() -> Callable[[VDAValidatorSegmentEventParams], None]: ...
@on_segment.setter
def on_segment(event_hook: Callable[[VDAValidatorSegmentEventParams], None]) -> None: ...

Remarks

The on_segment event will fire when a data segment is read. The Tag parameter contains the tag of the segment. Name contains the name of the segment as defined in the associated transaction set schema. LoopName contains the name of the loop or group this segment is present in (such as N1Loop1).

on_start_functional_group Event

Fires whenever a control segment is read that marks the start of a functional group.

Syntax

class VDAValidatorStartFunctionalGroupEventParams(object):
  @property
  def tag() -> str: ...

  @property
  def control_number() -> str: ...

  @property
  def full_segment() -> str: ...

# In class VDAValidator:
@property
def on_start_functional_group() -> Callable[[VDAValidatorStartFunctionalGroupEventParams], None]: ...
@on_start_functional_group.setter
def on_start_functional_group(event_hook: Callable[[VDAValidatorStartFunctionalGroupEventParams], None]) -> None: ...

Remarks

The on_start_functional_group event will fire when a control segment marking the start of a functional group structure is read. The Tag parameter contains the tag of the segment, such as GS. ControlNumber contains the control number associated with the segment.

on_start_interchange Event

Fires whenever a control segment is read that marks the start of an interchange.

Syntax

class VDAValidatorStartInterchangeEventParams(object):
  @property
  def tag() -> str: ...

  @property
  def control_number() -> str: ...

  @property
  def full_segment() -> str: ...

# In class VDAValidator:
@property
def on_start_interchange() -> Callable[[VDAValidatorStartInterchangeEventParams], None]: ...
@on_start_interchange.setter
def on_start_interchange(event_hook: Callable[[VDAValidatorStartInterchangeEventParams], None]) -> None: ...

Remarks

The on_start_interchange event will fire when a control segment marking the start of an interchange structure is read. The Tag parameter contains the tag of the segment, such as ISA. ControlNumber contains the control number associated with the segment.

on_start_loop Event

Fires when the starting of a loop is detected in a transaction set.

Syntax

class VDAValidatorStartLoopEventParams(object):
  @property
  def name() -> str: ...

# In class VDAValidator:
@property
def on_start_loop() -> Callable[[VDAValidatorStartLoopEventParams], None]: ...
@on_start_loop.setter
def on_start_loop(event_hook: Callable[[VDAValidatorStartLoopEventParams], None]) -> None: ...

Remarks

The on_start_loop event will fire when the tag of a loop trigger segment is read. The Name parameter contains the schema-provided name of the loop, such as "N1Loop1".

on_start_transaction Event

Fires whenever a control segment is read that marks the start of a transaction.

Syntax

class VDAValidatorStartTransactionEventParams(object):
  @property
  def tag() -> str: ...

  @property
  def control_number() -> str: ...

  @property
  def code() -> str: ...

  @property
  def full_segment() -> str: ...

# In class VDAValidator:
@property
def on_start_transaction() -> Callable[[VDAValidatorStartTransactionEventParams], None]: ...
@on_start_transaction.setter
def on_start_transaction(event_hook: Callable[[VDAValidatorStartTransactionEventParams], None]) -> None: ...

Remarks

The on_start_transaction event will fire when a control segment marking the start of a transaction is read. The Tag parameter contains the tag of the segment, such as ST. ControlNumber contains the control number associated with the segment. Code contains the transaction code (such as 810).

on_validation_error Event

Fires whenever a validation error is encountered.

Syntax

class VDAValidatorValidationErrorEventParams(object):
  @property
  def error_code() -> int: ...

  @property
  def message() -> str: ...

  @property
  def segment_number() -> int: ...

  @property
  def segment_tag() -> str: ...

  @property
  def technical_error_code() -> str: ...

  @property
  def segment_error_code() -> str: ...

  @property
  def element_error_code() -> str: ...

  @property
  def element_position() -> int: ...

  @property
  def line() -> int: ...

  @property
  def column() -> int: ...

# In class VDAValidator:
@property
def on_validation_error() -> Callable[[VDAValidatorValidationErrorEventParams], None]: ...
@on_validation_error.setter
def on_validation_error(event_hook: Callable[[VDAValidatorValidationErrorEventParams], None]) -> None: ...

Remarks

This event will fire with errors as the EDI document is validated. The ErrorCode parameter contains the type of error encountered. Message is a textual description of the problem. SegmentNumber is the index of the segment where the problem was found. SegmentTag holds the tag name of the segment. ElementPosition is the position of the element where the error occurred.

The Line and Column parameters identify the location within the EDI document where the error occurred.

Possible ErrorCode values are:


0	The component is not required but is present.
1	Invalid segment count.
2	Invalid transaction count.
3	Invalid group count.
4	Invalid interchange control number.
5	Invalid group control number.
6	Invalid transaction control number.
10	A required data element is missing.
11	Invalid field length.
12	Invalid field value.
13	A required component is missing.
14	The data element is not defined but is present.
30	Required segment is missing.
31	Required loop is missing.
32	Occurrences exceeds the schema defined limit.
33	Occurrences is less than the schema defined minimum.
40	Paired rule validation failed, the pair of elements must be present.
41	At least one of element is required, see message for list of elements.
42	Exclusion validation failed, only one of the elements can be present.
43	Conditional rule validation failed.
44	List conditional rule validation failed.
45	First then none validation failed. The presence of an element requires that other specific elements must not be present.
46	Only one or none of the elements can be present.

X12 Specific Parameters

The following parameters are available in all validator classes but are only applicable to X12 document validation at this time.

SegmentErrorCode holds the error code that may be used in the IK304 field of a 999. ElementErrorCode holds the error code that may be used in the IK403 field of a 999.

TechnicalErrorCode holds a technical error code that helps identify structural issues with the document. For instance when parsing an X12 document this will hold values that may be used for TA1 error codes. When parsing X12 documents the following codes are applicable:


001	The Interchange Control Numbers in the header ISA 13 and trailer IEA02 do not match.
014	Invalid interchange date value (non-numeric characters or wrong length).
015	Invalid interchange time value (non-numeric characters or wrong length).
022	The ISA segment is missing elements (invalid control structure).
024	Invalid interchange content (e.g., Invalid GS segment).

VDAValidator Config Settings

The class accepts one or more of the following configuration settings. Configuration settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the class, access to these internal properties is provided through the config method.

X12Validator Config Settings

ComponentDelimiter: The delimiter separating components.

After parsing an EDI document, this configuration option will return the delimiter used to separate components within data elements of the EDI document.

This configuration option may be set in the on_start_interchange event to specify the delimiter to be used.

CrossFieldValidationEnabled: Enables cross-field validation rules.

If True (default), cross-field validation rules present in the document schema will be checked.

Note, Bots Schema Files do not support syntax rules, therefore CrossFieldValidation rules will never execute for these schemas.

ElementDelimiter: The delimiter character separating data elements.

After parsing an EDI document, this configuration option will return the delimiter used to separate data elements within segments of the EDI document.

This configuration option may be set in the on_start_interchange event to specify the delimiter to be used.

Encoding: The character encoding to be applied when reading and writing data.

If the data contains non-ASCII characters this setting should be specified so characters are properly preserved. This value should be set to a valid character set such as "UTF-8" or "ISO-8859-1".

ExtraData: Extra data that has not been parsed by the component.

This setting will only be populated after the flush method has been called and data exists in the internal parser which has not been processed.

HasXPath: Determines if the specified XPath exists.

This setting can be used to query if an XPath exists before setting xpath. For instance: Console.WriteLine(edireader.Config("HasXPath=IX/FG/TX/IT1Loop1/[2]"));

ISA11IsRepetitionSeparator: Specifies whether the ISA11 value is treated as a Repetition Separator or Standard Identifier.

By default this value is True and the ISA11 value is treated as a Repetition Separator in all documents with version 004040 or greater. Set this value to False to treat ISA11 as a Standard Identifier instead of a Repetition Separator.

MaxValidationErrors: The maximum number of errors to save in the ValidationErrors property.

This setting specifies the maximum number of errors that will be kept in the validation_errors property. Once this limit is exceeded the on_validation_error event will continue to fire but details will not be saved in the validation_errors property. The default value is 200.

ReleaseChar: The character used to escape delimiters within values.

After parsing an EDI document, this configuration option will return the escape character used to escape delimiters within values within the EDI document.

This configuration option may be set in the on_start_interchange event to specify the escape character to be used.

ResolveXPathOnSet: Determines whether or not the XPath is resolved when set.

When true, the class will fully resolve a detailed path when xpath is specified. In this case, the xpath property will contain the x_segment s name as well as the indices when queried after being set.

If this value is set to false, the exact string will be returned when the xpath property is queried from the last time it was set.

For example, the following code will print the string "/[1]/[1]/[1]/[10]" when this value is false, and would print "/IX[1]/FG[1]/TX[1]/IT1Loop1[4]" when this value is true: reader.XPath = "/[1]/[1]/[1]/[10]"; Console.WriteLine(reader.XPath);

In another example, the following code sample will print "IX/FG/TX/IT1Loop1" when false and would print "/IX[1]/FG[1]/TX[1]/IT1Loop1[1]" when true: reader.XPath = "IX/FG/TX/IT1Loop1"; Console.WriteLine(reader.XPath);

This is useful in cases where the full XPath including indices is needed for future processing.

SegmentDelimiter: The delimiter character separating segments within the EDI document.

After parsing an EDI document, this configuration option will return the delimiter used to separate segments within the EDI document.

This configuration option may be set in the on_start_interchange event to specify the delimiter to be used.

StrictSchemaValidation: Specifies the behavior during schema validation.

This setting specifies what happens when performing schema validation and a validation warning occurs. By default this value is set to 1 (Warn) and the on_warning event will fire, but processing will not stop. See the WarnCode parameter list in the on_warning event for details about possible validation warnings. Possible values for this setting are:


0 (Ignore)	All validation warnings will be ignored. on_warning will not fire with warnings.
1 (Warn - default)	The on_warning event will fire with all validation warnings.
2 (Error)	All validation warnings are treated as errors and will cause an exception. Processing will stop immediately.

Base Config Settings

BuildInfo: Information about the product's build.

When queried, this setting will return a string containing information about the product's build.

CodePage: The system code page used for Unicode to Multibyte translations.

The default code page is Unicode UTF-8 (65001).

The following is a list of valid code page identifiers:


Identifier	Name
037	IBM EBCDIC - U.S./Canada
437	OEM - United States
500	IBM EBCDIC - International
708	Arabic - ASMO 708
709	Arabic - ASMO 449+, BCON V4
710	Arabic - Transparent Arabic
720	Arabic - Transparent ASMO
737	OEM - Greek (formerly 437G)
775	OEM - Baltic
850	OEM - Multilingual Latin I
852	OEM - Latin II
855	OEM - Cyrillic (primarily Russian)
857	OEM - Turkish
858	OEM - Multilingual Latin I + Euro symbol
860	OEM - Portuguese
861	OEM - Icelandic
862	OEM - Hebrew
863	OEM - Canadian-French
864	OEM - Arabic
865	OEM - Nordic
866	OEM - Russian
869	OEM - Modern Greek
870	IBM EBCDIC - Multilingual/ROECE (Latin-2)
874	ANSI/OEM - Thai (same as 28605, ISO 8859-15)
875	IBM EBCDIC - Modern Greek
932	ANSI/OEM - Japanese, Shift-JIS
936	ANSI/OEM - Simplified Chinese (PRC, Singapore)
949	ANSI/OEM - Korean (Unified Hangul Code)
950	ANSI/OEM - Traditional Chinese (Taiwan; Hong Kong SAR, PRC)
1026	IBM EBCDIC - Turkish (Latin-5)
1047	IBM EBCDIC - Latin 1/Open System
1140	IBM EBCDIC - U.S./Canada (037 + Euro symbol)
1141	IBM EBCDIC - Germany (20273 + Euro symbol)
1142	IBM EBCDIC - Denmark/Norway (20277 + Euro symbol)
1143	IBM EBCDIC - Finland/Sweden (20278 + Euro symbol)
1144	IBM EBCDIC - Italy (20280 + Euro symbol)
1145	IBM EBCDIC - Latin America/Spain (20284 + Euro symbol)
1146	IBM EBCDIC - United Kingdom (20285 + Euro symbol)
1147	IBM EBCDIC - France (20297 + Euro symbol)
1148	IBM EBCDIC - International (500 + Euro symbol)
1149	IBM EBCDIC - Icelandic (20871 + Euro symbol)
1200	Unicode UCS-2 Little-Endian (BMP of ISO 10646)
1201	Unicode UCS-2 Big-Endian
1250	ANSI - Central European
1251	ANSI - Cyrillic
1252	ANSI - Latin I
1253	ANSI - Greek
1254	ANSI - Turkish
1255	ANSI - Hebrew
1256	ANSI - Arabic
1257	ANSI - Baltic
1258	ANSI/OEM - Vietnamese
1361	Korean (Johab)
10000	MAC - Roman
10001	MAC - Japanese
10002	MAC - Traditional Chinese (Big5)
10003	MAC - Korean
10004	MAC - Arabic
10005	MAC - Hebrew
10006	MAC - Greek I
10007	MAC - Cyrillic
10008	MAC - Simplified Chinese (GB 2312)
10010	MAC - Romania
10017	MAC - Ukraine
10021	MAC - Thai
10029	MAC - Latin II
10079	MAC - Icelandic
10081	MAC - Turkish
10082	MAC - Croatia
12000	Unicode UCS-4 Little-Endian
12001	Unicode UCS-4 Big-Endian
20000	CNS - Taiwan
20001	TCA - Taiwan
20002	Eten - Taiwan
20003	IBM5550 - Taiwan
20004	TeleText - Taiwan
20005	Wang - Taiwan
20105	IA5 IRV International Alphabet No. 5 (7-bit)
20106	IA5 German (7-bit)
20107	IA5 Swedish (7-bit)
20108	IA5 Norwegian (7-bit)
20127	US-ASCII (7-bit)
20261	T.61
20269	ISO 6937 Non-Spacing Accent
20273	IBM EBCDIC - Germany
20277	IBM EBCDIC - Denmark/Norway
20278	IBM EBCDIC - Finland/Sweden
20280	IBM EBCDIC - Italy
20284	IBM EBCDIC - Latin America/Spain
20285	IBM EBCDIC - United Kingdom
20290	IBM EBCDIC - Japanese Katakana Extended
20297	IBM EBCDIC - France
20420	IBM EBCDIC - Arabic
20423	IBM EBCDIC - Greek
20424	IBM EBCDIC - Hebrew
20833	IBM EBCDIC - Korean Extended
20838	IBM EBCDIC - Thai
20866	Russian - KOI8-R
20871	IBM EBCDIC - Icelandic
20880	IBM EBCDIC - Cyrillic (Russian)
20905	IBM EBCDIC - Turkish
20924	IBM EBCDIC - Latin-1/Open System (1047 + Euro symbol)
20932	JIS X 0208-1990 & 0121-1990
20936	Simplified Chinese (GB2312)
21025	IBM EBCDIC - Cyrillic (Serbian, Bulgarian)
21027	Extended Alpha Lowercase
21866	Ukrainian (KOI8-U)
28591	ISO 8859-1 Latin I
28592	ISO 8859-2 Central Europe
28593	ISO 8859-3 Latin 3
28594	ISO 8859-4 Baltic
28595	ISO 8859-5 Cyrillic
28596	ISO 8859-6 Arabic
28597	ISO 8859-7 Greek
28598	ISO 8859-8 Hebrew
28599	ISO 8859-9 Latin 5
28605	ISO 8859-15 Latin 9
29001	Europa 3
38598	ISO 8859-8 Hebrew
50220	ISO 2022 Japanese with no halfwidth Katakana
50221	ISO 2022 Japanese with halfwidth Katakana
50222	ISO 2022 Japanese JIS X 0201-1989
50225	ISO 2022 Korean
50227	ISO 2022 Simplified Chinese
50229	ISO 2022 Traditional Chinese
50930	Japanese (Katakana) Extended
50931	US/Canada and Japanese
50933	Korean Extended and Korean
50935	Simplified Chinese Extended and Simplified Chinese
50936	Simplified Chinese
50937	US/Canada and Traditional Chinese
50939	Japanese (Latin) Extended and Japanese
51932	EUC - Japanese
51936	EUC - Simplified Chinese
51949	EUC - Korean
51950	EUC - Traditional Chinese
52936	HZ-GB2312 Simplified Chinese
54936	Windows XP: GB18030 Simplified Chinese (4 Byte)
57002	ISCII Devanagari
57003	ISCII Bengali
57004	ISCII Tamil
57005	ISCII Telugu
57006	ISCII Assamese
57007	ISCII Oriya
57008	ISCII Kannada
57009	ISCII Malayalam
57010	ISCII Gujarati
57011	ISCII Punjabi
65000	Unicode UTF-7
65001	Unicode UTF-8

The following is a list of valid code page identifiers for Mac OS only:


Identifier	Name
1	ASCII
2	NEXTSTEP
3	JapaneseEUC
4	UTF8
5	ISOLatin1
6	Symbol
7	NonLossyASCII
8	ShiftJIS
9	ISOLatin2
10	Unicode
11	WindowsCP1251
12	WindowsCP1252
13	WindowsCP1253
14	WindowsCP1254
15	WindowsCP1250
21	ISO2022JP
30	MacOSRoman
10	UTF16String
0x90000100	UTF16BigEndian
0x94000100	UTF16LittleEndian
0x8c000100	UTF32String
0x98000100	UTF32BigEndian
0x9c000100	UTF32LittleEndian
65536	Proprietary

LicenseInfo: Information about the current license.

When queried, this setting will return a string containing information about the license this instance of a class is using. It will return the following information:

Product: The product the license is for.
Product Key: The key the license was generated from.
License Source: Where the license was found (e.g., RuntimeLicense, License File).
License Type: The type of license installed (e.g., Royalty Free, Single Server).
Last Valid Build: The last valid build number for which the license will work.

MaskSensitive: Whether sensitive data is masked in log messages.

In certain circumstances it may be beneficial to mask sensitive data, like passwords, in log messages. Set this to True to mask sensitive data. The default is True.

This setting only works on these classes: AS3Receiver, AS3Sender, Atom, Client(3DS), FTP, FTPServer, IMAP, OFTPClient, SSHClient, SCP, Server(3DS), Sexec, SFTP, SFTPServer, SSHServer, TCPClient, TCPServer.

ProcessIdleEvents: Whether the class uses its internal event loop to process events when the main thread is idle.

If set to False, the class will not fire internal idle events. Set this to False to use the class in a background thread on Mac OS. By default, this setting is True.

SelectWaitMillis: The length of time in milliseconds the class will wait when DoEvents is called if there are no events to process.

If there are no events to process when do_events is called, the class will wait for the amount of time specified here before returning. The default value is 20.

UseFIPSCompliantAPI: Tells the class whether or not to use FIPS certified APIs.

When set to True, the class will utilize the underlying operating system's certified APIs. Java editions, regardless of OS, utilize Bouncy Castle FIPS, while all the other Windows editions make use of Microsoft security libraries.

FIPS mode can be enabled by setting the UseFIPSCompliantAPI configuration setting to True. This is a static setting which applies to all instances of all classes of the toolkit within the process. It is recommended to enable or disable this setting once before the component has been used to establish a connection. Enabling FIPS while an instance of the component is active and connected may result in unexpected behavior.

For more details please see the FIPS 140-2 Compliance article.

Note: This setting is only applicable on Windows.

Note: Enabling FIPS-compliance requires a special license; please contact sales@nsoftware.com for details.

UseInternalSecurityAPI: Whether or not to use the system security libraries or an internal implementation.

When set to False, the class will use the system security libraries by default to perform cryptographic functions where applicable.

Setting this configuration setting to True tells the class to use the internal implementation instead of using the system security libraries.

On Windows, this setting is set to False by default. On Linux/macOS, this setting is set to True by default.

To use the system security libraries for Linux, OpenSSL support must be enabled. For more information on how to enable OpenSSL, please refer to the OpenSSL Notes section.

VDAValidator Errors

X12Validator Errors


	1000 Input/Output error
	1001 No stream or file name were specified for the component
	1002 Unexpected end of file (EOF).
	1003 Segment not found.
	1004 Segment not found in schema.
	1005 Schema not found.
	1010 Invalid Writer state.
	1011 Segment does not have the specified element or component.
	1012 Invalid XPath.
	1013 DOM tree unavailable (set BuildDOM and reparse).
	1014 Document contains incomplete segments.
	1015 Document contains an open EDI structure (interchange, functional group or transaction) with no matching footer segment.
	1044 Error while reading schema file.
	1100 Component is busy.
	1099 Unexpected error.