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David Hockenbroch · Nov 18, 2021

Here's a possible alternative to using SqlComputeCode.

You can override the getter method for that property so that it always returns the related document name. In your Question class, define your docFileName property as:

Property docFileName As %String [ReadOnly];

You'll want it to be read only because you aren't going to want to be able to set this property in the question object. You're going to want to retrieve it from the document object. If it could also be set here, you'd have things weirdly out of sync. Then, in that same class, include the following method:

Method docFileNameGet() As %String{
    if ..Document '= ""{
        return ..Document.FileName
    }
    else{
        return ""
    }
}

Once you do that, whenever you refer to the question's docFileName, it'll give you the document's file name, or an empty string if there isn't one.

David Hockenbroch · Nov 16, 2021

Rochdi, when you say you've figured out how to save it to C:\Temp\filename.csv, are you saying you have it saved on the client, or on the server?

If it's saving the file on the server, you can create a class that extends %CSP.StreamServer, then override the OnPreHTTP and OnPage class methods like this for simple text files:

 Class fileserver Extends %CSP.StreamServer
{ 
ClassMethod OnPreHTTP() As %Boolean
{
do %response.SetHeader("Content-Type","text/csv")
do %response.SetHeader("Content-Disposition","attachment;filename=""myfile.csv""")
quit 1
} 
ClassMethod OnPage() As %Status
{
set file = ##class(%File).%New("/path/to/file.csv")
do file.Open("R")
while file.AtEnd '= 1{
write file.ReadLine(),!
}
quit $$$OK
} 
}

and then just link to it that page to download.

Once you get to things that aren't plain text, it gets a little more complicated, but this should work for a simple csv.

David Hockenbroch · Nov 11, 2021

To use something in the task scheduler, you have to create a class that extends %SYS.Task.Definition. Within that class you have to define:

Method OnTask() As %Status{
    //The stuff you want to happen when the task is scheduled goes here.
    //In your case, that probably means calling your task method.
}

If that method is not defined, you get the "Not Implemented" error. If you've created such a class, make sure the method had the right name, isn't a classmethod, is As %Status, and does return a %Status. Also make sure the class is compiling correctly.

David Hockenbroch · Nov 5, 2021

Your result set should be an EnsLib.SQL.GatewayResultSet, which has a method called GetSnapshot(). That method has you pass a EnsLib.SQL.Snapshot by reference. You're probably going to want to set the FetchAll parameter on the GetSnapshot() method to 1 so it gets all the results, but you can also create your EnsLib.SQL.Snapshot before using GetSnapshot() and set it's starting row and max rows if you'd like. Then you can iterate over the snapshot instead of the result set. Once you've gone through it once, you could either create a new snapshot by calling the GetSnapshot() method again, or you can use the snapshot's Rewind() method.

David Hockenbroch · Nov 4, 2021

According to this page, if it's something that still in development, you can use the CleanProduction() method to clear the message queues. Using it in a live system isn't recommended because it clears out everything pretty indiscriminately, but it's useful for debugging.

Productions get the suspend status when after shutting down there are still synchronous messages that could not be processed.

David Hockenbroch · Sep 24, 2021

MAXSTRING usually indicates that you're exceeding the maximum possible length of a string somewhere. Are you sure it's a problem with the %Stream.GlobalCharacter, and not a different string variable in your program? Global character streams shouldn't have that problem.

You can see what the maximum length of a string is on your system by opening a terminal and running:

write $SYSTEM.SYS.MaxLocalLength()