#InterSystems IRIS

Hi.

I want to save and compile a class in VS Code, but I get the error:

Failed to save 'Utils.cls': Unable to write file 'isfs://mip:mz/API/Utils.cls?project=MZ' (Unknown (FileSystemError): Unknown Error).

Any ideas what is wrong?

Regards,
Matjaž

Hey everyone,

I'm diving deeper into Caché ObjectScript and would love to open a discussion around the most useful tips, tricks, and best practices you’ve learned or discovered while working with it.

Whether you're an experienced developer or just getting started, ObjectScript has its own set of quirks and powerful features—some well-documented, others hidden gems. I’m looking to compile a helpful set of ideas from the community.

If you're migrating from Oracle to InterSystems IRIS—like many of my customers—you may run into Oracle-specific SQL patterns that need translation.

Take this example:

SELECT (TO_DATE('2023-05-12','YYYY-MM-DD') - LEVEL + 1) AS gap_date
FROM dual
CONNECT BY LEVEL <= (TO_DATE('2023-05-12','YYYY-MM-DD') - TO_DATE('2023-05-02','YYYY-MM-DD') + 1);

In Oracle:

• LEVEL is a pseudo-column used in hierarchical queries (CONNECT BY). It starts at 1 and increments by 1.
• CONNECT BY LEVEL <= (...)

InterSystems has released new point updates to resolve a defect affecting the most recent prior versions of 2025.1.0, 2024.1.4, 2023.1.6, and 2022.1.

Hello,
I have created this script that does lot of writes to a single global. DB write performance is much slower than expected (compared to another similar systems).

set rec = "..." //fill it with something
set time = $piece($horolog,",",2)
while(($piece($horolog,",",2)-time) < 30) //30 seconds
    set ^A($System.Util.CreateGUID()) = rec
}

I have notified the following : 

• CPU usage does not reach 100% on a single core (eg: 25% of total CPU usage should be seen on a 4 cores system).

I am having a hard time trying to figure out the following...

Within a DTC, I was able to take the a EnsLib.HL7.Message source and using

set a= $System.Encryption.Base64Encode(source.RawContent)
set encodedMessage=$Get(a)

to take the HL7 message encode it and add it to the Data Class as a string to be sent to an Operation to be sent out as a SOAP Request. 

However to make it more universal I tried doing this within a copy of EnsLib.HL7.SOAPOperation

Method SendMessage(pMsgOut As EnsLib.HL7.Message, Output pMsgIn As EnsLib.

Hi  Guys,

I'm looking for a Zen component that allow me to populate a list of items and the ability to multiselect, similar to checklist?

I've thought of using MultiSelectSet component but don't know how can I populate it like to a query or resultset?

a short sample code would be helpful.

Thanks

Does anyone have a copy of the Class EnsLib.File.CSVService, which can import a CSV file in a Business Service?

I have created a New Database/Namespace within our TEST environment on both the Primary and Backup of the mirror. When I go to create the database/namespace on the DR node I am getting "Cannot open file '/ensemble/TEST/iris.cpf_...." while the cpf file that it references does not exist. Anyone have any clue to why this might be happening?

Hello All,

No matter what I try in Business Process Logic (BPL), I am unable to calculate the patient's age in days or years.

Has anyone ever built logic in a Business Process (BPL) to calculate a person's age in days?

Thank you!

Hi,

     Can anyone please tell me how to append a string using a update query.

For eg :  "Hello" is the string . I need to append the string world and it needs to be "Hello world".

Thanks

Jude

Hi Community,

Our Project Managers created a series of videos to highlight some of the interesting features of the new 2025.1 release. Please welcome the first one of them:

⏯ Foreign Tables in InterSystems IRIS 2025.1

Introduction

MonLBL is a tool for analyzing the performance of ObjectScript code execution line by line. codemonitor.MonLBL is a wrapper based on the %Monitor.System.LineByLine package from InterSystems IRIS, designed to collect precise metrics on the execution of routines, classes, or CSP pages.

The wrapper and all examples presented in this article are available in the following GitHub repository: iris-monlbl-example

Summary

I have a Task that I am trying to write the output to a file. How do I check for if the Output File has been included in the Task Schedule, so I can direct my output of my class to that output file?

Thanks

Scott

Hi Guys,

How can I create Python pages instead of CSP or Zen pages, not familiar with Python and the only way I know is using embedded Python as methods as attached below?  

Thanks

Let's suppose two different routines use one and the same chunk of code. From the object-oriented POV, a good decision is to have this chunk of code in a separate class and have both routines call it. However, whenever you call code outside of the routine as opposed to calling code in the same routine, some execution speed is lost. For reports churning through millions of transactions this lost speed might be noticeable. Any advice how to optimize specifically speed?
P.S. Whenever someone is talking about the best choice for whatever, I am always tempted to ask: "What are we optimizing?".

Hi Community,

Enjoy the new video on InterSystems Developers YouTube:

⏯ Migrating 20TB to InterSystems IRIS with Near 0 Downtime @ Global Summit 2024

How would you go about creating an SQL Stored Procedure that would result in the same output as "IN LIKE"?
For example...
CustomersTable

select *
from CustomersTable
where inLike('%Mark%', '%John%')

Would return:

Hi IRIS experts!

I have a parameter in a class that stores a global name:

Parameter GlobalName = "^AGlobal";

then I'm trying to call it as:

set gn=$name(..#GlobalName)

to use it later as:

set @gn@("index")="value"

But! I'm having syntax at set gn=$name(..#GlobalName)

What am I doing wrong?

Hello,

I have a class with a "Unique" index (pxfactidIndex) on a %Numeric property (pxfactid) (partially-edit code snippet below):

Property pxfactid As %Library.Numeric(MAXVAL = 9223372036854775807, MINVAL = -9223372036854775808, SCALE = 0) [ SqlColumnNumber = 7 ];
Index pxfactidIndex On pxfactid [ Unique ];
Storage Default
{
<Data name="FactDefaultData">
<Value name="1">
<Value>pysubjectid</Value>
</Value>
...
<Value name="6">
<Value>pxfactid</Value>
</Value>
...
</Data>
<DataLocation>^CRMBI.FactD</DataLocation>
<DefaultData>FactDefaultData</DefaultData>
<ExtentLocation>

Hi Community,
i'm trying to figure out how to pass a string to a routine from Powershell:
 

####

ROUTINE ImplUtil

Say(pSomething = "hello, i'm the ROUTINE") public{
    w !,pSomething,!
}

####

call: irissession healthconnect -U user 'Say^ImplUtil(12345)'

what's the right way to pass in text?

Join our next in-person Developer Meetup in Cambridge to explore the latest trends, tools, and features for innovating on data. This time we will dive into Building and Evaluating Agentic Generative Retrieval Systems.

Talk 1
Agentic Retrieval: Techniques beyond Vector Search
Speaker: Suprateem Banerjee, Sales Engineer - AI Specialist

Talk 2
Setting up testing frameworks to quantitatively measure improvements in agentic systems
This talk with cover how open source libraries such as langfuse and deepeval can be leveraged to see how improvements to prompts, llm models and tools change an agent / RAG system's performance. We will briefly cover how these systems work before delving into how they can be combined together.
Speaker: @Jayesh Gupta, Solutions Developer, InterSystems

>> Register here

⏱ Day and Time: July 9, 5:30 p.m. to 7:30 p.m.
NEW VENUE ALERT:
📍Amazon Boston Office, 55 Pier 4 Blvd, Boston, MA 02210

George James Software is excited to share a new release of Deltanji source control, version 8.1. This new release introduces a Git Location Driver along with several other functionality and usability improvements. 

Highlights of this release include: 

• Git Location Driver, which enables Deltanji to integrate directly with Git repositories.
• Additional signing methods for Task Server II.
• DATA Component Driver proxy classes.
• Add or remove from Work Lists incrementally. 
• %ALL system definitions.
• New Installation defaults.

I have a stream that I read out until the end. I then append more content to the stream and want to read out only what has been added. How do I only read out the new contents of the stream? Essentially, I want to read a stream, record the end position, then once the stream is updated read the contents from that recorded position until at the new end. This stream needs to be kept intact for historical reference so cannot be cleared between reads.

Is a layer before the internal HTTP of Caché/IRIS, such as a Reverse Proxy or API Gateway, a good option?

Example: I have an API using %CSP.REST, and I am using the internal port for development. But for production and approval, I put a reverse proxy using NGINX. Is this recommended? Is it an alternative?

Diagram.

We're planning to use Production Validator for validating our system upgrade (2016.2.3 to 2024.2) , and we are trying to understand what kind of benchmarking or performance metrics others have observed during similar efforts.

Specifically, we are looking for a case study or real-world example that includes details like:

• How many messages were validated?
• How long did it take to create the temporary database from the source system?
• How long did it take to run the comparison on the destination system?

You know that feeling when you get your blood test results and it all looks like Greek? That's the problem FHIRInsight is here to solve. It started with the idea that medical data shouldn't be scary or confusing – it should be something we can all use. Blood tests are incredibly common for checking our health, but let's be honest, understanding them is tough for most folks, and sometimes even for medical staff who don't specialize in lab work. FHIRInsight wants to make that whole process easier and the information more actionable.

Hello,

I am currently trying to install InterSystems IRIS for Health and specifically the Ensemble integration tool, but I am facing issues.

Here are the details of my setup:

• Version of IRIS: 2025.1 (Community Edition)
• Operating System: [Insert your OS here, e.g., Windows 10, Ubuntu 20.04, etc.]
• Issue: I have downloaded IRIS for Health, but I cannot find Ensemble during the installation process. I have tried using the Early Access programs, but Ensemble is not included in the options I can choose. I have also tried installing various versions of IRIS, but still, Ensemble is missing.

IRIS supports CCDA and FHIR transformations out-of-the-box, yet the ability to access and view those features requires considerable setup time and product knowledge. The IRIS Interop DevTools application was designed to bridge that gap, allowing implementers to immediately jump in and view the built-in transformation capabilities of the product.