#ObjectScript

During my search for a snapshot of a persistent object,
I met a feature that I would like to share as it could be useful in some special situations.
My trigger was to have a before- and an after-image during unit testing.

It would be interesting if there is some recommended documentation about best practices using Healthshare for interoperability.

Also, some how-tos or frequently asked questions about ObjectScript.

Or event better, if there are experienced developers who would like to share some common habits on their work with Studio / ObjectScript, which are valuable to do the developing work better.

For example, How to get the XML of a class and write it into a REST operation:

...

t's also an example for a customized command extension (ZZJSN) in Caché & IRIS

This is the Caché version for fast JSON formatting but it also works in IRIS.
Requires package ZPretty
To allow parallel existence in IRIS this is named ZZJSN

see:

IRIS and Caché / Ensemble offer the possibility to add Languages Extension as SystemFunctions, SystemVariables, SystemCommands

The related documentation tells you where to add the system-wide extension. Parameter passing is not covered explicitly.

I try to run a small test routine (guessing a random number) in WebTerminal but the result looks broken.
in IRISterminal:

in WebTerminal:

I think it relates to backspace.
Is there some special setting required?

The code:

Introduction

If you're solving complex problems in ObjectScript, you probably have a lot of code that works with %Status values. If you have interacted with persistent classes from an object perspective (%Save, %OpenId, etc.), you have almost certainly seen them. A %Status provides a wrapper around a localizable error message in InterSystems' platforms. An OK status ($$$OK) is just equal to 1, whereas a bad status ($$$ERROR(errorcode,arguments...)) is represented as a 0 followed by a space followed by a $ListBuild list with structured information about the error. $System.Status (see class reference) provides several handy APIs for working with %Status values; the class reference is helpful and I won't bother duplicating it here. There have been a few other useful articles/questions on the topic as well (see links at the end). My focus in this article will be on a few debugging tricks techniques rather than coding best practices (again, if you're looking for those, see links at the end).

I need to set and use some context variables in a transformation (written in DTL), but the code is manually written.

When writing the same as BPL I define context variables and they are visible in transformations called by that process.

In something like this my.DTLtransform sets HL7 message fields to values in context variables:

Hi Developers!

Looking for a fast, efficient IDE for developing ObjectScript code? Watch the new video on InterSystems Developers YouTube for more:

⏯ ObjectScript with Visual Studio Code

https://www.youtube.com/embed/nCKkQOB-EcI
[This is an embedded link, but you cannot view embedded content directly on the site because you have declined the cookies necessary to access it. To view embedded content, you would need to accept all cookies in your Cookies Settings]

Hi, folks!

Do you know the option/mode when I can feed multiline code into a terminal?

E.g.

for i=1:1:100 {

/// do one line

///do something else}

Hi guys,

Do you have any objectscript sample to list persistent classes with name, type, primary key and foreign keys using %Dictionary?

We have code with the line

Hi Developers!

Suppose you have a persistent class with data and you want to have a simple Angular UI for it to view the data and make CRUD operations.

Recently @Alberto Fuentes described how to build Angular UI for your InterSystems IRIS application using RESTForms2.

In this article, I want to tell you how you can get a simple Angular UI to CRUD and view your InterSystems IRIS class data automatically in less than 5 minutes.

Let's go!

Looking for a fast, efficient IDE for developing ObjectScript code?

Check out ObjectScript with Visual Studio Code, a new video from Online Learning, which shows how to export ObjectScript packages from the InterSystems IRIS server and write ObjectScript classes and methods with Visual Studio Code.

I have a code tag that performs some logic in a DTL, and want to add to it the ability to find the number of substrings delimited by a dollar sign ($) within a particular string. I have tried the following which compiles just fine, but generates an error when testing in the Data Transformation Builder.