#ObjectScript

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InterSystems ObjectScript is a scripting language to operate with data using any data model of InterSystems Data Platform (Objects, Relational, Key-Value, Document, Globals) and to develop business logic for serverside applications on InterSystems Data Platform.

Documentation.

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Article Dmitrij Vladimirov · Jun 16 3m read

Starter collection of materials for beginners in InterSystems IRIS: InterSystems ObjectScript

Hi folks!
Our community is growing rapidly, and the knowledge base is incredibly vast. Whether you're a newbie, confused, and unsure where to start, or a seasoned IRIS veteran who occasionally forgets a few basic rules (it's normal and happens to everyone!), you'll find this brief overview of IRIS basics and all its wonders useful.
Here I'd like to begin a series of articles dedicated to this topic.
There will be eight main topics in total:

  1. InterSystems ObjectScript
  2. Build with REST APIs
  3. Managing Data Models
  4. Explore Integrated ML
  5. Interoperability & Integrations
  6. Introduction to IRIS HealthShare products
  7. Analytics & Business Intelligence
  8. Deployment & DevOps

Each of them will consist of four parts: Courses, Community articles, Documentation, Applications

This particular part will cover InterSystems ObjectScript. For your convenience, all categories will be hidden under a spoiler.
 

#InterSystems IRIS #Documentation #Learning Portal #Open Exchange #Beginner #Databases #MDX #ObjectScript #SQL #Tutorial
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Question Davi Massaru Teixeira Muta · Jun 2

Can't save ClassMethod [ Language = python ]

On save the ClassMethod:

ClassMethod create() [ Language = python ] {

 print("python") 

}

it has received the error : Compilation started on 06/03/2026 02:15:21 with qualifiers 'cuk /multicompile=0'

 ERROR #7802: Worker job/s '1078:17' unexpectedly shut down in group '#Default:(9119826733444):0'.

 ERROR #7802: Worker job/s '1078:17' unexpectedly shut down in group '#Default:(9119826733444):0'.  

 

with the compileFlags "cuk" the return is:

ERROR #7802: Worker job/s '1160:34' unexpectedly shut down in group '#Default:(6933525859080):0'.

#InterSystems IRIS for Health #ObjectScript #Python
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Article Jonathan Card · May 28 5m read

ClassMethods Are Not Your Friends

There seems to be a generous use of ClassMethods in ObjectScript code generally. I hope my own experiences aren't representative, but I bet they are. Forgive me for giving away the ending of this article, but in short: don't use them. Unless you can make a pretty convincing case that you have to, just never use them.1

What is a ClassMethod? In an ObjectScript class, you can define methods in two different ways: in a Method, you must instantiate an instance of the class to call the method, and in a ClassMethod, you can call the method without instantiating the class. Of course, in a ClassMethod, you don't have access to any properties of the object (because there's no object), but you can access globals (they are global, after all) and Parameters (which are class constants).

#InterSystems IRIS #Globals #ObjectScript #Testing
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Article José Pereira · May 19 13m read

Common Table Expressions (CTEs) in InterSystems IRIS SQL

Abstract

Common Table Expressions (CTEs) provide a structured framework for defining reusable intermediate result sets within SQL statements. InterSystems IRIS implements CTEs via the WITH clause, enabling clearer query composition and modular analytical processing while remaining fully integrated with the IRIS cost-based optimizer.

This article explores the semantics of CTEs in InterSystems IRIS, explains their interaction with query optimization, discusses appropriate deployment scenarios, and presents executable examples illustrating practical patterns for production environments.

#InterSystems IRIS #Other #ObjectScript #SQL #Tools
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Article Ben Schlanger · Jun 8 4m read

Selectively Aborting Messages from an Interoperability Queue

Back when I was a Developer Support Engineer in the InterSystems Worldwide Response Center (WRC), I would occasionally receive cases involving large message backlogs in a production. The customer would discover that a subset of queued messages were no longer useful and would ask a question similar to the following:

Is there an established best practice for mass-aborting messages in a specific component's queue that match a particular set of criteria?
#InterSystems IRIS #Ensemble #InterSystems IRIS for Health #API #Code Snippet #Interoperability #ObjectScript
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