B2B Integration 10.2 | Administering and Monitoring B2B Transactions | webMethods Module for EDI | Handling Large Documents When Using Trading Networks | Configuring Module for EDI for Large Document Handling | Determining When an EDI Document Is Large
 
Determining When an EDI Document Is Large
Module for EDI checks the configuration file during the following actions to determine if the EDI document being processed is large:
* When the wm.b2b.edi:envelopeProcess service is invoked to process an inbound EDI document. The envelopeProcess service leaves the transaction set data within an EDI document unparsed. These unparsed sections of the document are known as undefined segments. The envelopeProcess service uses the EDIBigDocThreshold property to determine whether the undefined segment is large.
* When the wm.b2b.edi:convertToValues service is invoked to convert a String or InputStream to an IData object. The convertToValues service uses a flat file schema to determine how to parse the document. When the convertToValues service encounters sections of the EDI document for which the flat file schema does not define the structure, that section of the document is considered an undefined segment. The convertToValues service uses the EDIBigDocThreshold property to determine whether the undefined segment is large.
If an undefined segment is considered large, the envelopeProcess and convertToValues services write the undefined segment to Tspace and store the pointer to the undefined segment (called a reservation ID) in the _RID_ element. The envelopeProcess service places the _RID_ element in its output IData object (Values) after the element for the corresponding transaction header. The convertToValues service places the _RID_ element in its output IData object (EDIValues) after the last identified segment.
If the undefined segment is not considered large, the services write the undefined segment to the unDefData element and place the unDefData element in the output IData object (instead of an _RID_ element).
For more information about the envelopeProcess and convertToValues services, see webMethods Module for EDI Built-In Services Reference .

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