AllAccepted answers
Marc Mundt · Jan 12, 2023

It would be great to have a cheat-sheet for all of these keyboard shortcuts and other tricks, especially in terms of "if you used to do X in Studio, here's how to do that in VS Code".

A few months ago I happened across the incantation for the VS Code equivalent of Studio's "Find in Files" (free text search of server-side classes) but forgot the key combination and haven't had the time to try to figure out which docs to check and guess at whether it's a standard feature of VS Code or of the ObjectScript plug-in.

Marc Mundt · Nov 7, 2022

Menno,

In your ObjectScript code you never base64 decode the key:

set key="pZR8qfrz7t47G+dboyJCH4NnJRrF+dJbvxq37y/cLUo="
...
Set encrypted=$SYSTEM.Encryption.AESCBCEncrypt($zcvt(text,"O","UTF8"),key,iv)

But you did this in Python:

keyBase64="pZR8qfrz7t47G+dboyJCH4NnJRrF+dJbvxq37y/cLUo="
key = base64.b64decode(keyBase64)
...
cipher = AES.new(key, AES.MODE_CBC)
Marc Mundt · Nov 7, 2022

Adding the additional logging helped. Looking at it now, it looks like it is working as coded:

9413847-9428572 BEGENING OF LOOP FOR: XAL465.1110.A0
9413847-9428572 START RECURSIVE
9421986-9428572 Has Value
9413847-9428572 BEGENING OF LOOP FOR: XAL465.1110.A1

The call for 9413847 is looping through all results of the query. It finds that 9421986 has a composition so it calls itself recursively. The call for 9421986 finds that it already has a value so it returns control to the 9413847 loop which continues iterating.

If you want all super and sub loops to quit as soon as any sub-loop finds "has value" then you will need to check for this condition inside the loop.

Marc Mundt · Nov 4, 2022

It's a bit hard to follow the output. I think things will become clearer if you add "mainArticle" and "article" to every WRITE statement, for example:

W !, $G(mainArticle),"-",$G(article)," Has Value"
...
W !, $G(mainArticle),"-",$G(article)," BEGENING OF LOOP FOR: "_rs.articleCode
...
W !, $G(mainArticle),"-",$G(article)," START RECURSIVE"
...
W !, $G(mainArticle),"-",$G(article)," END OF LOOP"
Marc Mundt · Sep 16, 2022

Hopefully this can save you some work. It uses a much larger chunk size (which is a multiple of 57) and works with or without CR/LFs (set the argument pAddCRLF):

Class Example.B64.Util Extends %RegisteredObject
{

/// Be cautious if changing CHUNKSIZE. Incorrect values could cause the resulting encoded data to be invalid.
/// It should always be a multiple of 57 and needs to be less than ~2.4MB when MAXSTRING is 3641144
Parameter CHUNKSIZE = 2097144;

ClassMethod B64EncodeStream(pStream As %Stream.Object, pAddCRLF As %Boolean = 0) As %Stream.Object
{
    set tEncodedStream=##class(%Stream.GlobalCharacter).%New()
    
    do pStream.Rewind()
    
    while ('pStream.AtEnd) {
        set tReadLen=..#CHUNKSIZE
        set tChunk=pStream.Read(.tReadLen)
        
        do tEncodedStream.Write($System.Encryption.Base64Encode(tChunk,'pAddCRLF))
        if (pAddCRLF && 'pStream.AtEnd) {
            do tEncodedStream.Write($c(13,10))
        }
    }
    
    do tEncodedStream.Rewind()
    
    quit tEncodedStream
}

}
Marc Mundt · Jul 21, 2022

My experience with Zebras was quite a few years ago, so this may or may not still apply... Using Zen reports at the time, the print server would end up rendering the label as a bitmap and sending that over to the Zebra. ZPL code to print an equivalent label was much smaller than a bitmap, so ZPL labels tended to print faster than those rendered by a report.

Marc Mundt · Jun 14, 2022

Ok, so the flow would look roughly like this:

  • The GenericService accepts an inbound REST request, populates a GenericMessage, and sends it to your business process
  • Business process extracts the JSON payload from the GenericMessage, and pulls out any relevant details needed for the call to Athena
  • Business process creates a new GenericMessage, populates any items needed by Athena, uses %SYS.OAuth2 (and the OAuth client profile you created) to request an OAuth token and adds it to the GenericMessage, and passes the new GenericMessage to the business operation.
  • Business operation makes the outbound REST call to Athena, and returns a new GenericMessage containing the response to your business process.
  • Business process extracts JSON payload from the GenericMessage, uses a transformation to create the payload required by your internal REST client.
  • Business process creates a new GenericMessage, populates it with the response payload, and returns it to the GenericService
  • GenericService returns response to REST client