Hello,

i am building a new container with Docker-Compose with a --volume ./:/irisdev/app:rw to mount a host volume (UBUNTU).

If i try to create some data in /irisdev/app i have no write permission

If i open a bash host session i see all mounted files of my ./ directory. But with ls -l only UID 100 has write permission. The UID for "iris owner" is 52773.

Is there a way to set the UID and Group to "iris owner" ?

regards Matthias 

Hi Community!

Because our previous sweepstakes was such a blast, we've decided to do a repeat performance 😉 And this time, the topic of our sweepstakes is 

🔎 DC search 🔍

We think you might have a few suggestions on how we can improve our search engine, and we would absolutely love to hear from you!

Hello everyone,

I'm looking for a practical project guide to help me gain hands-on experience with InterSystems Ensemble HL7. Ideally, this guide would walk through building a small project — something that covers key concepts like message routing, transformations, and interoperability.

If there's a resource that also includes step-by-step instructions and perhaps even offers a certification upon completion, that would be perfect.

Any recommendations or guidance would be greatly appreciated. Thanks in advance! 😊

Looking for a SQL query or any other method to find the Unique/distinct message counts for all productions or at least per production namespace within a given time frame. For e.g TimeCreated = January 2025 (Whole month)

I have used the following, but its not restricting the numbers based on the TimeCreated filter. Every time a new message is processed by system, its added to the total. I am running the query in today's date

Select Sum(MsgCount)

From

(Select DISTINCT TargetConfigName, count(DISTINCT SessionID) as MsgCount

FROM ENS.

Hi colleagues!

Often, while developing a frontend app or any other communication vs REST API, it is worth having a Swagger UI - a test UI for the REST API that follows Open API 2.0 spec. Usually, it is quite a handful as it lets have quick manual tests vs REST API and its responses and the data inside.

Recently I've introduced the Swagger support to the InterSystems IRIS FHIR template for FHIR R4 API:

How to get it working.

Intro

In the process of trying to get more familiar with Objectscript I decided to try to build a general priority queue since I wasn't able to find an implementation anywhere. My though process for implementing this followed this general path.

Binary Heap

My first though to try to make this work quickly was to implement a binary heap and my first attempt at this used a multidimensional to build it. This version was relatively efficient, worked for strings/numbers natively, and worked for objects be letting the user override the comparitor.

Class pqueue.Queue Extends %RegisteredObject
{

Property Data As %Any [ MultiDimensional ];

Property Size As %Integer [ InitialExpression = 0 ];

Property Comparitor As %String [ InitialExpression = "(a,b) return a < b" ];
    
    Method Swap(i As %Integer, j As %Integer) As %Status [ Private ]
    {
    set temp = ..Data(i)
    set ..Data(i) = ..Data(j)
    set ..Data(j) = temp
    }
    
    Method Comp(x As %Any, y As %Any) As %Boolean [ Private ]
    {
    return $XECUTE(..Comparitor, x, y)
    }
    
    Method PercolateUp(idx As %Integer) [ Private ]
    {
    while idx > 0 {
    set newidx = (idx-1)\2

    if ..Comp( ..Data(idx), ..Data(newidx) ) do ..Swap( idx, newidx )
    else                                     Quit

    set idx = newidx
}
}

Method PercolateDown() [ Private ]
{
set idx = 0

while ((idx+1)*2) < ..Size {
        if ..Comp( ..Data(idx*2+2), ..Data(idx*2+1) ) set newidx = idx*2+2
        else                                          set newidx = idx*2+1
    
        if ..Comp( ..Data(idx), ..Data(newidx) ) Quit
    
        do ..Swap( idx, newidx )
        set idx = newidx
    }
    
    if ( (idx*2+1 < ..Size) && ..Comp( ..Data(idx*2+1), ..Data(idx) ) ) do ..Swap( idx, idx*2+1 )
    }
    
    Method IsEmpty() As %Boolean
    {
    return ..Size = 0
    }
    
    Method Top() As %Any
    {
    if ..IsEmpty() return ""
    return ..Data(0)
    }
    
    Method Put(inp As %Any) As %Status
    {
    set sts = $$$OK
    
    set ..Data( ..Size ) = inp
    do ..PercolateUp( ..Size )
    set ..Size = ..Size + 1
    
    return sts
    }
    
    Method Get(Output obj As %Any) As %Status
    {
    set sts = $$$OK
    if ..IsEmpty() {
        set obj = ""
        return $$$ERROR( "Cannot Get() from empty Queue" )
    }
    
    set obj = ..Data( 0 )
    set ..Size = ..Size - 1
    set ..Data( 0 ) = ..Data( ..Size )
    do ..PercolateDown()
    kill ..Data( ..Size )
    return sts
    }
    
    Method GenerateComparitor(operator As %String = "<", transform As %String = "") As %Status
    {
    set ..Comparitor = "(a,b) return a" _ transform _ " " _ operator _ " b" _ transform
    return $$$OK
    }
    
    }

After getting this working I wanted to try out different internal arrays since I assumed multidimensional arrays must be slower than a simple integer indexed array. So I modified the above code to use

*   `Property Data As list Of %Any;` : This works OK but it is about 3-4 times slower than using a multidimensional making it pointless.
*   `Property Data As %DynamicArray;` : I assumed this would be relatively fast but proved to be slow to the point of absurdity. When the amount of data stored in the queue is small it is around as fast as the `list of %Any`, but as the data grows the time it takes to make inserts and gets grows linearly which makes it pointless to build a heap on top of.

## Using the Multidimensional Array's Self-sorting

On its face this idea seems pretty simple, use the fact that the multidimensional array is always sorted to grab the lowest cost (highest priority) item. A problem with this are that indexing by an object simply uses the string representation of that object which isn't useful. To handle this a customer `evaluator` function is needed to return the integer or string evaluation of an object which is then sorted, it is then stored as `data( evaluation, obj_str_rep ) = object` which ensures that objects are correctly sorted even when two objects evaluate to the same value.

    Class pqueue.SparseQueue Extends %RegisteredObject
    {
    
    // Parameter Comp(a,b) As $XECUTE(..Comparitor, a, b);
    
    Property Data As %Any [ MultiDimensional ];
    
    Property Size As %Integer [ InitialExpression = 0 ];
    
    Property Evaluator As %String [ InitialExpression = "(a) return a" ];
    
    Method IsEmpty() As %Boolean
    {
        return ..Size = 0
    }
    
    Method Top() As %Any
    {
        if ..IsEmpty() return ""
        return $Order( ..Data("") )
    }
    
    Method Put(inp As %Any) As %Status
    {
        set sts = $$$OK
    
        set ..Data( $XECUTE(..Evaluator, inp), inp ) = inp
        set ..Size = ..Size + 1
    
        return sts
    }
    
    Method Get(Output obj As %Any) As %Status
    {
        set sts = $$$OK
        if ..IsEmpty() {
            set obj = ""
            return $$$ERROR( "Cannot Get() from empty Queue" )
        }
    
        set loc = $ORDER( ..Data("") )
        set obj = ..Data(loc, $ORDER( ..Data(loc, "")))
    
        set ..Size = ..Size - 1
        kill ..Data( loc, obj )
        return sts
    }
    
    Method GenerateEvaluator(transform As %String = "") As %Status
    {
        set ..Evaluator = "(a) return a" _ transform
        return $$$OK
    }
    
    }

This method proved to be by far the fastest. It has some slight disadvantages in that it can be harder to write an evaluator than a comparitor and, in the form given above, it cannot hold the same object at the same value twice (this is a rare case but could theoretically be a problem or a benefit).

## Speed Test

To test these out I wrote a simple script that generates a large randomized weighted directed graph and runs [Dijkstra's shortest path algorithm](https://www.geeksforgeeks.org/dijkstras-shortest-path-algorithm-greedy-algo-7/) using a given queue object. Using a graph with `150000` vertices where each has `10` neighbors, the output is printed below. Here while the algorithm is running an update is printed every `10000` edges checked, where the time since the last 10 thousand and size of the priority queue is printed, with some final stats at the end. The order they are run in is

*   Self-sorting Multidimensional

*   Heap Multidimensional

*   Heap Dynamic Array

*   Heap List of Object

> Generated Random Graph

If there is a way we can find how much a particular namespace is utilizing the O/S CPU and memory, that will be great in resource utilixation as well as capacity planning.

Hi all,

I'm working on a requirement to loop through all encounter streamlets(SDA) to identify specific encounters based on an encounter extension property for a patient fetch request. However, this current process is time-consuming, and we need to create indexes for that property to quickly retrieve the expected results without going through all the encounter streamlets of a patient.

I would appreciate help on how to achieve this, as I couldn't find any documentation explaining how to create indexes on a SDA element.

Thanks in advance.

We recently changed the 'UserID" property in a "User" class from type of %String to be %Library.Username. This is for better consistency across our codebase regarding MAXLEN limit.

%Library.Username is a system wrapper datatype which extends %String and has a MAXLEN of 160. This change should have minimal/no impact on code behavior. However, we found that some SQL query cannot return expected rows after the change. Query will return empty values even if the entry is in the table.

Using IRIS 2024.1.2 when I mount the routine database as read-only I get an error when executing dynamic SQL queries.

What globals need to be mapped in a read-write database in order to allow execution plans to be written?

Hey,

I need to read a directory on a remote server which requires a user to be su. The question is how to correctly read the server response and then to send a su password using IRIS device I/O API (I'm able to read other commands output such as uname, but can't figure out how to switch to su):

// Init SSH session
Set ..Session = ##class(%Net.SSH.Session).%New()
Set status = ..Session.Connect(..Server)
$$$ThrowOnError(status)
Set status = ..Session.AuthenticateWithUsername(..UserName, ..Password)
$$$ThrowOnError(status)

// SUDO
#Dim device
Set device = ""
Set status = ..Session.Execute("su " _ ..UserName, .device) // Is this correct?
$$$ThrowOnError(status)
Use device

#Dim response      
Read !, "", response // Here I get a kind of infinite loop
Write ..Password

Close device

Hi,

I would like to convert an html zen page to PDF using wkhtmltopdf so I've installed it in Ubuntu and the command wkhtmltopdf but because I've my IRIS installed in a container that command is not recognized and we can't install wkhtmltopdf  in the container so is there a way to be able to run this command?  

Thanks

Hi Community,

Enjoy the new video on InterSystems Developers YouTube:

⏯ Customizing the InterSystems FHIR Transformation Service @ Global Summit 2024

Hey Community,

Here are the bonuses for participants' articles that take part in the InterSystems Technical Article Contest 2025:

I'm experimenting with FHIR bulk data load using NDJSONs, so far the import is running smoothly, but when I'm trying to perform a request of kind /Patient or /Procedure I'm getting back the following error:

{
    "resourceType": "OperationOutcome",
    "issue": [
        {
            "severity": "error",
            "code": "too-costly",
            "diagnostics": "<HSFHIRErr>SearchTooCostly",
            "details": {
                "text": "Search selects more than maximum allowed number of results (1000)."
            }
        }
    ]
}

Submission for InterSystems Technical Article Contest 2025

By Suze van Adrichem, Alice Heiman and Bubble Yu

View our video here: https://share.descript.com/view/JjI5tob8La

Inspiration

Mitigating climate change is only possible through a patchwork of collective action. The future of our planet will be determined by our ability to change previous destructive corporate processes radically. However, companies often struggle to find concrete solutions and actions to reduce their carbon footprint while advancing their business goals.

We partner with Race to Zero to create a climate action matcher

Introduction

As the health interoperability landscape expands to include data exchange across on-premise as well as hosted solutions, we are seeing an increased need to integrate with services such as cloud storage. One of the most prolifically used and well supported tools is the NoSQL database DynamoDB (Dynamo), provided by Amazon Web Services (AWS).

The challenge for IRIS implementations, as it relates to Dynamo and other modern web services, is that there is no native support for interacting with Dynamo and AWS within ObjectScript.

Hello, dear colleagues.

I need to connect to a remote JavaGateway from an Ensemble service.

I am trying to use the EnsLib.JavaGateway.Service with a remote host where the JVM is running.

I can successfully ping the remote Java Gateway from EnsLib.JavaGateway.Service, and Ensemble reports that the service status is OK.

There are no network issues, and all necessary ports are accessible.

My requests work without any problems when I specify localhost in EnsLib.JavaGateway.Service.

Hi Folks,

I am an architect working on a program involving Weblink. I am new to InterSystems and I am looking for information around basic capabilities of Weblink. I understand that the version we are dealing with (2014) is not supported no need to review that :).

Thank you,

Mike

It's time for us to meet!

AI Meetup in afterwork mode with InterSystems 🍕

Are you passionate about artificial intelligence and want to discover how RAG is revolutionising generative AI? Then we have the perfect plan for you:   

27 March 18:30 - InterSystems Iberia, C. de Quintanadueñas, 6, Edificio ARQBÓREA, Fuencarral-El Pardo, Madrid.

Has anyone used this transform to convert SDA3 to HL7?

HS.Gateway.SDA3.SDA3ToHL7.ADTA0N

Seeing below error

ERROR <Ens>ErrGeneral: Can't evaluate DOM path '/Patient/PatientNumbers/[1]/Organization/UniversalId' because UniversalId in /Patient/PatientNumbers/[1]/Organization/UniversalId is not an element, instead this node is a 'unknown' node. + ERROR <Ens>ErrGeneral: Can't evaluate DOM path '/Patient/PatientNumbers/[2]/Organization/UniversalId' because UniversalId in /Patient/PatientNumbers/[2]/Organization/UniversalId is not an element, instead this node is a 'unknown' node.

Hi, Community!

🔒Are you linking your InterSystems Cloud Services deployments to a private network? See how to do this securely:

Creating and Managing VPNs with InterSystems Network Connect

Using SQL Gateway with Python, Vector Search, and Interoperability in InterSystems Iris

Part 3 – REST and Interoperability

Now that we have finished the configuration of the SQL Gateway and we have been able to access the data from the external database via python, and we have set up our vectorized base, we can perform some queries. For this in this part of the article we will use an application developed with CSP, HTML and Javascript that will access an integration in Iris, which then performs the search for data similarity, sends it to LLM and finally returns the generated SQL. The CSP page calls an API in Iris that receives the data to be used in the query, calling the integration. For more information about REST in the Iris see the documentation available at https://docs.intersystems.com/irislatest/csp/docbook/DocBook.UI.Page.cl…

Hi,

How to login Intersystems IRIS for Health SMP using SSO with OKTA auth.

I'm proud to announce the new release of iris-pex-embedded-python (v2.3.1) with a new command line interface.

This command line is called iop for Interoperability On Python.

First I would like to present in few words the project the main changes since the version 1.

A breif history of the project

Version 1.0 was a proof of concept to show how the interoperability framework of IRIS can be used with a python first approach while remaining compatible with any existing ObjectScript code.

What does it mean? It means that any python developer can use the IRIS interoperability framework without any knowledge of ObjectScript.

Example :

from grongier.pex import BusinessOperation

class MyBusinessOperation(BusinessOperation):

    def on_message(self, request):
        self.log.info("Received request")

Great, isn't it?

Hi ,

I have a scheduler task and an associated class that works.

Class Sample.Util.CreateTask Extends (%SYS.Task.Definition, %Persistent)
{

Parameter PROPERTYVALIDATION = 1;

Parameter TaskName = "Sample.Util.CreateTask";

Method OnTask() As %Status
{
// Perform the logic
}

}

Is there a way to Enable or Disable the above task "CreateTask()" from an external function/Method/class ?

Hi,

Has anyone used 'IO-Redirect' package?

https://openexchange.intersystems.com/package/io-redirect

IRIS for me runs on a Linux server.

I want the package to be able to supply "answers" from a Linux OS file in response to a program run as follows:
do ^ADMIN
I'm assuming that the program does objectscript reads from the terminal

Questions

1. Is docker required? Docker is not installed on the server.
2. Would the package be able to handle redirect I/O in this case?
    Would I have to write extra code (objectscript) to read the Linux file as a "stream"?
3. How would I  install the package?

Hey Community!

We're happy to share the next video in the series dedicated to Gen AI on our InterSystems Developers YouTube:

⏯ Energy Consumption for AI