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How Do I Generate UPC-A Bar Codes in A Cognos Reports Using a Streamer?

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I am following the tutorial Streaming Barcode Images in Cognos, using the demo to generate barcodes in a Cognos Report.

One of the issues is the cast_barchar function (shown in the above tutorial) called for in the expression - I know of no such function. When I place the Dynamic Barcode Generator URL into the expression definition and run the report, it simply gives back the string version of what I entered in the expression.

If I hard-code the URL string, it works:
'http://bcgen.com/demo/linear-dbgs.aspx?D=' || 123456789012 || '&S=1'

When I use the cast_barchar function, I get errors.

Can you clarify what is going on?

Operating System: Windows

Application: IBM Cognos

01-02-18 6.8 year(s) ago

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James	Best Answer Image in the tutorial: I believe you are accidentally mistaking the tutorial example’s field with a function specific to Cognos, the Dynamic SaaS Generator, or its demo. Here is the fictional example dataset field reference: cast_barchar([gosales_goretailers].[Products].[Product number]) Here is the field separated for readability: ‘http://bcgen.com/demo/linear-dbgs.aspx?D=’ \|\| cast_barchar([gosales_goretailers].[Products].[Product number]) \|\| ‘&S=1’ For instance, if the above field equaled 11 as seen on the top barcode, then the full string rendered value would be equivalent to: ‘http://bcgen.com/demo/linear-dbgs.aspx?D=’ \|\| ‘11’ \|\| ‘&S=1’ * This would normally be one line. Rendered string’s result (click on the barcode to see URL in browser): Using the above and the example, simply replace your real variables or fields in the Expression Definition field so that (when rendered by Cognos) it will form a string that our streamer product will then recognize and respond to with a barcode. Note: The above is strictly referring to the general tutorial, which is not UPCa. If you would like to generate UPCa, substitute in the appropriate properties: • D=123456789012 (or a correct number at least 11 digits long) • S=6 Posted 6.8 year(s) ago (0) (0) Report Abuse

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