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Article
· Jan 13, 2020 1m read
Difference between while and for

While and for are pretty similar, but sometimes you need to do a not recommended thing - change cycle boundaries.

In this situation while and for are different. For calculates boundaries once per run and while calculates boundaries on every iteration.

Consider this code sample:

set x = 5
for i=1:1:x {
     write "i: ", i,", x: ", x,!
     set x = x+1
}

You'll get this output:

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Question
· Nov 13, 2019
Keep Alive Packet

does Health Connect have an out of box setting to send some type of "Keep Alive" packet? This is for a TCP connection. I have a vendor that will disconnect from the engine if there is a 2 hour idle time. would like to send something across every hour (if its idle) to prevent the disconnection. I'm assuming this may be something custom that needs to be created, but thought I asked the community first.

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Article
· Jul 25, 2019 1m read
Disabling an Ensemble Production

I'm not saying that this is in anyway "best practices," but I'm in a peculiar situation where I need to restrict users from starting a "retired" Ensemble Production in a namespace that's been renamed. It's still an "Ensemble-activated" namespace; we need to keep it available for Ensemble Message Viewer access ... fortunately, only for a little while.

It's a bit of a hack ...

Open the Production class in Studio and add the following classmethod:

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This is a FYI for anyone who has experienced the following error after upgrading an existing instance to any product based on Caché 2017.2.2. In our case, the products are HealthShare HealthConnect for Redhat x64 and for Windows x86-64 but I believe it would be a common problem for any InterSystems product on any platform, if based on Caché 2017.2.2. After upgrading our development instance from 2016.2.2 to 2017.2.2, we experienced the following errors when attempting to start a pre-existing Java Object Gateway that was defined prior to the upgrade:

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Article
· Jul 24, 2023 20m read
Local K8s Deployment of a FHIR server

k8s

This is a sample to deploy iris-oauth-fhir on k3d with IKO.
* iris-oauth-fhir is a sample to deploy a FHIR server with OAuth2 authentication with InterSystems IRIS for Health as a resource server and Google OpenId as an authorization server.
* k3d is a lightweight wrapper to run k3s (Rancher Lab's minimal Kubernetes distribution) in docker.
* IKO is a tool to deploy InterSystems IRIS for Health on Kubernetes.

Open Exchange app
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Article
· Feb 23, 2023 3m read
Publish / subscriber example in IRIS

Hi all!

In a project we needed to define topics to publish messages and register different subscribers which will receive those messages asynchronously. We also needed it to be as simple as possible and that we could use it on InterSystems IRIS directly.

As an experiment, I'm sharing this iris-pubsub open exchange example.

Infrastructure

This is built on top of InterSystems IRIS interoperability features, it needs a running production.

Open Exchange app
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IRIS BI

We offer you to embed business intelligence into your applications in order to give your users an opportunity to ask and answer sophisticated questions about their data. Typically, your application will include customizable dashboards that can provide insight into data from Business Intelligence models known as cubes.

In contrast with traditional BI systems that use static data warehouses, Business Intelligence keeps being constantly synchronized with the live transactional data.

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I can start cache without issue. There are no errors in the console log. However, when I access the management portal the page fails to display instead displaying the error page with the error "CSP application closed the connection before sending a complete response". This was working yesterday so the root cause is not clear. Reviewing all log files, the only error I have found is in the csp.log. The error is:

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Discussion
· May 8, 2021
New to Learn Python

Hello I am in My 2nd year of Engineering, and want to learn Python Programing Language, Please suggest to me the best books and best online resources that will help me to learn the python language.

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Question
· Jan 20, 2021
Multiple Threads In Operations

I have a BPL that calls a business service (actually does lots of other things unrelated to my question). We receive an acknowledgement back containing data that is processed in the BPL and sent to the source system. The process of sending to our downstream system "A" and receiving the response takes about 20 seconds per transaction (very slow on system A's side). Due to this slowness, we end up with a backlog close to 1000 messages by the end of the workday.

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Question
· Nov 16, 2018
Detecting Source Code Change?

Is there a responsive way to detect a source code change without using a source control hook?

Update

I have my own custom unit test tool which has lots of extra functions that I find useful such as Asserting HL7 Transformers and REST targets.

I have a studio hook that will send an event signal to my test runner that will automatically re-run a specific test class or test suite, for which I have a test runner viewing page that updates with the results.

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When you install an IRIS or Caché instance on Windows Server, you'll usually need to install it under a specific user account that has network access permissions. This is very handy when you needs to access network resources for creating files or directly accessing printers.

TL;DR: see key takeaways at the bottom!

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Hey Developers,

Enjoy watching the new video on InterSystems Developers YouTube:

⏯ Achieving Single Sign-On: External Providers, HealthShare Unified Care Record, Clinical Viewer @ Global Summit 2022

https://www.youtube.com/embed/BjIeR3EXPUA
[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]

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Article
· Aug 22, 2020 1m read
Transition from Cache to IRIS: Value Canvas

Some clients ask me about migrate from Cache to IRIS. Why migrate to IRIS? Cache is excellent, stable, has good performance. These clients are right, but in the last years, the digital transformation imposed more complete solutions for the new requirements and InterSystems was a visionary to perceive it and launch IRIS.
It is a data platform ready to this digital transformation challenge. To show this, I created a Value Canvas.

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Question
· Sep 6, 2018
list Of %String problem

I am trying to initialize a list of %string property to an empty list, and after add eleements.

d ##class(Test.Test).Test("hello") ; works perfectly
d ##class(Test.Test).Test("") ; does not work, the list stays empty

How can I do that. Thank you so much

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Hi Developer Community,

We all love coding, but every now and then, it’s time to step away from the code and exercise! The InterSystems Walking Challenge will help you recharge your mind and boost your fitness. Embark on a virtual journey from Lübeck to Lüneburg along the historic Salt Road, the legendary trade route that connected Europe centuries ago.

Win exciting prizes like treadmills, smartwatches, and medals.

👟🚶🧑‍🦼Lace Up, Step Out, and Code Better! 🔋💻💪

📅 Registration is open until November 8.The challenge ends on November 22, 2024, at 6 PM CET

Want to join? Details below.

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I want to get Mirror Status and copy this report into a file for audit purposes.

I have a Linux servers for IRIS DB with this layout:
LIVETC01 Backup
LIVETC02 Primary
LIVEDR Async Copy
ARBITER

I understand that this will get me the mirror status
# sudo -u irisowner iris session LIVETC01
LIVETC01:USER>zn "%SYS"
LIVETC01:%SYS>do ^MIRROR

1) Mirror Status
2) Mirror Management
3) Mirror Configuration

Option? 1

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Hi folks!

I'm curious if it is possible to change the class method to another class?

I call a method of a system class to generate another class. But there is a bug/feature in a library class, so I need to tweak a bit the generated method, e.g. add additional parameter and change the line to "if" the parameter.

I hope to do this programmatically after class generation and change the code in a way I like.

What are the options?

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I must be missing something. We have done encoded PDF's in the past with the Encoded PDF in OBX.5.5. When I have used this code in the past I was only working with 1 OBX, but I have a case where I am having multiple OBX's and having to loop through them and I am renumbering the outbound OBX.

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Hi there.

I am dealing with a clinical system that returns a stack trace within the NACK (Specifically, within MSA:3).

Within the stack trace there is an error code I am interested in, and hoped I could use the Reply Code Actions to look for that code within the error by using the "E*<text>" condition to either suspend or accept the response and move on. The problem is, looking at the error within the event log, I can see that the error text is truncated, cutting off the error code I'm looking for within the stack trace.

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A very simple SQL

SELECT field1 F1, count(field2) CntF2
FROM GCT.PA_Data
where field1 is not null
group by field1

gives an error back:

[SQLCODE: <-461>:<Communication link failure>]

[%msg: <Connection 'TRAKCARELIVE': Execute: SQLState: (HY000) NativeError: [10053] Message: [Cache ODBC][State : HY000][Native Code 10053] [c:\intersystems\ensemble\bin\cache.exe] Software caused connection abort> ]

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I'm using %SOAP.WebRequest to send SOAP requests:

  1. Populate %SOAP.WebRequest object (by setting Request and HeadersOut properties)
  2. Call SendSOAPBody method to send request

Currently the XML I send looks like this:

<?xml version="1.0" encoding="UTF-8" ?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV='http://schemas.xmlsoap.org/soap/envelope/'>
  <SOAP-ENV:Header>
<SomeCustomHeader/>  </SOAP-ENV:Header>
  <SOAP-ENV:Body><SomeCustomBody/></SOAP-ENV:Body>
</SOAP-ENV:Envelope>

However, I want XML to be generated differently:

  • No new lines
  • No whitespaces between <SomeCustomHeader/> and </SOAP-ENV:Header>

How can I tweak XML generation to achieve that?

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