Mapping to trim all columns

Question

Hi All,
I am wondering if you have any recommendation on how to do data scrubbing (trimming, data conversion, etc) in owb mapping?
For example, I would like to TRIM all the columns (say 200 of them) in a source table and move them to target table. Currently, I am using this expression operator, and its a pain to repeat the same steps for all the 200 columns. do you guys have any suggestions?
~Prabha

Answer 1

Hello Prabha,
As an alternative why not use OMB?
I have this very simple code that sometimes I use when I need to repeat functions like that on expression operators. All you need to do is connect all the attributes into the input group of the expression operator and replace the values for path_to_mapping, MY_MAP and MY_EXPRESSION in the code.
You can execute this directly on the OMB*Plus editor in OWB.
Regards,
Bruno
OMBCC path_to_mapping
set mapName MY_MAP
set operatorName MY_EXPRESSION
foreach columnName [OMBRETRIEVE MAPPING '$mapName' OPERATOR '$operatorName' GROUP 'INGRP1' GET ATTRIBUTES] {
     set dataType_prop [OMBRETRIEVE MAPPING '$mapName' OPERATOR '$operatorName' GROUP 'INGRP1' ATTRIBUTE '$columnName' GET PROPERTIES (DATATYPE)]
     switch $dataType_prop {
          "VARCHAR2" {
               set length_prop [OMBRETRIEVE MAPPING '$mapName' OPERATOR '$operatorName' GROUP 'INGRP1' ATTRIBUTE '$columnName' GET PROPERTIES (LENGTH)]
               OMBALTER MAPPING '$mapName' \
                    ADD ATTRIBUTE '$columnName' OF GROUP 'OUTGRP1' OF OPERATOR 'EXPRESSION' \
                         SET PROPERTIES (DATATYPE, LENGTH, EXPRESSION) \
                         VALUES ('$dataType_prop','$length_prop', 'TRIM(INGRP1.$columnName)')
          "CHAR" {
               set length_prop [OMBRETRIEVE MAPPING '$mapName' OPERATOR '$operatorName' GROUP 'INGRP1' ATTRIBUTE '$columnName' GET PROPERTIES (LENGTH)]
               OMBALTER MAPPING '$mapName' \
                    ADD ATTRIBUTE '$columnName' OF GROUP 'OUTGRP1' OF OPERATOR 'EXPRESSION' \
                         SET PROPERTIES (DATATYPE, LENGTH, EXPRESSION) \
                         VALUES ('$dataType_prop','$length_prop', 'TRIM(INGRP1.$columnName)')
          "FLOAT" {
               set precision_prop [OMBRETRIEVE MAPPING '$mapName' OPERATOR '$operatorName' GROUP 'INGRP1' ATTRIBUTE '$columnName' GET PROPERTIES (PRECISION)]
               OMBALTER MAPPING '$mapName' \
                    ADD ATTRIBUTE '$columnName' OF GROUP 'OUTGRP1' OF OPERATOR 'EXPRESSION' \
                         SET PROPERTIES (DATATYPE, PRECISION, EXPRESSION) \
                         VALUES ('$dataType_prop','$precision_prop', 'TRIM(INGRP1.$columnName)')
          "DATE" {
               OMBALTER MAPPING '$mapName' \
                    ADD ATTRIBUTE '$columnName' OF GROUP 'OUTGRP1' OF OPERATOR 'EXPRESSION' \
                         SET PROPERTIES (DATATYPE, EXPRESSION) \
                         VALUES ('$dataType_prop', 'TRIM(INGRP1.$columnName)')
          default {
               set precision_prop [OMBRETRIEVE MAPPING '$mapName' OPERATOR '$operatorName' GROUP 'INGRP1' ATTRIBUTE '$columnName' GET PROPERTIES (PRECISION)]
               set scale_prop [OMBRETRIEVE MAPPING '$mapName' OPERATOR '$operatorName' GROUP 'INGRP1' ATTRIBUTE '$columnName' GET PROPERTIES (SCALE)]
               OMBALTER MAPPING '$mapName' \
                    ADD ATTRIBUTE '$columnName' OF GROUP 'OUTGRP1' OF OPERATOR 'EXPRESSION' \
                         SET PROPERTIES (DATATYPE, PRECISION, SCALE, EXPRESSION) \
                         VALUES ('$dataType_prop','$precision_prop','$scale_prop','TRIM(INGRP1.$columnName)')
}