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BIX extract including unwanted classes in query



In BiX using the switch -c in a script pulls in more classes than expected.

Error Messages

Not Applicable

Steps to Reproduce

Extract using the -c switch on the command line.

Root Cause

Incorrect system behavior is observed when using the -c switch from the command line More than the expected or wanted classes are extracted.


Here’s the explanation for the reported behavior:

The behavior is expected. A
ll concrete descendants of the current class for -c option whether pattern inherited or directed are selected.

In the past BIX used a like predicate even though the root class to extract was not a class group. This led to inefficiencies and data extractions that retrieved all inherited classes.
This defect was corrected. However, in order to have some method to mimic this behavior a -c option was created. This option will not only extract pattern inherited classes, but also directed inherited classes. This can cause other unexpected results.

​The below table illustrates what happens.This behavior is as designed and is expected behavior. When extracting History-X-Y, the items in red are also extracted with the -c argument. These are directed inheritance. The prior behavior would return only the pattern inheritance via the like predicate. E.G. select <columns> where ... pxObjClass like 'History-X-Y%'

Class Name Class Type Derives From
History-X-Y Concrete History-X-Z
History-X-Y-Data-Account Concrete History-CS-FW-Z-Data-SR-Y
History-X-Y-Data-AccountInfo Concrete History-X-Y
History-X-Z Concrete History-CS-FW-Z-Work
History-X-Z-W Concrete History-CS-FW-Z-Work-W
History-X-Z-W-Data-RED Concrete History-Data-
History-X-Z-W-Data-YELLOW Concrete History-Data-
History-X-Z-W-Data-CI-IRA-CO Concrete History-Data-
History-X-Z-W-Data-Notification Concrete History-Data-
History-X-Z-W-Data-Product Concrete History-Data-
History-X-Z-W-Data-BLUE Concrete History-Data-
History-X-Z-Acct Concrete History-CS-FW-Z-Work-Acct
History-X-Z-CC Concrete History-CS-FW-Z-Work-CC
History-X-Z-DC Concrete History-CS-FW-Z-Work-DC
History-X-Z-DC-Return Concrete History-CS-FW-Z-Work-DC
History-X-Z-Data-ClYsLookup Concrete History-CS-FW-Z-Data-ClYsLookup
History-X-Z-SR Concrete History-CS-FW-Z-Work-SR
History-X-Z-SR-AM Concrete History-CS-FW-Z-Work-SR
History-X-Z-SR-CB Concrete History-CS-FW-Z-Work-SR
History-X-Z-SR-MM Concrete History-X-Z-SR
History-X-Z-SR-RSO Concrete History-CS-FW-Z-Work-SR
History-X-Z-SR-SS Concrete History-CS-FW-Z-Work-SR
History-X-Z-SR-SS-RAIF Concrete History-CS-FW-Z-Work-SR
History-X-Z-SR-TOA Concrete History-CS-FW-Z-Work-SR
History-CS-FW-Z-Work-SR Concrete History-Work-Cover-
History-CS-FW-Z-Work-SR-AU Concrete History-CS-FW-Z-Work-SR
History-CS-FW-Z-Work-SR-CB Concrete History-PegaFS-SCM-Work
Suggest Edit

Published March 26, 2017 - Updated October 8, 2020

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