#InterSystems IRIS

@Robert Cemper is the most active and widely read member of the community (Best Seller!). So nothing better than learning InterSystems technologies from over 100 articles by him. I curated the articles, selecting the best ones by subject:

InterSystems FAQ rubric

For volatile tables (tables with many INSERTs and DELETEs), storage for bitmap indexes can become inefficient over time.

For example, suppose that there are thousands of data with the following definition, and the operation of bulk deletion with TRUNCATE TABLE after being retained for a certain period of time is repeatedly performed.

Hi folks!

How can I refer to a classmethod of the same class while coding another classmethod with Embedded python?

I know that I can call it with iris.cls(classname).MethodName(), but it's more cumbersome even comparing with ObjectScript, where I can call ..MethodName().

Compare ObjectScript:

do ..SetupGame()

and the same call in EmbeddedPython:

    iris.cls('eshvarov.sample.SeaBattle.GamePython').SetupGame()

Thoughts?

Getting INVALID OREF error while unit testing. Also ResultDyanmicObj.Headers.%Size(),DummyResponse.Headers.%Size() these are working fine getting 7 value from both. but still it is not working.

do $$$AssertEquals(ResultDyanmicObj.Headers.%Size(),DummyResponse.Headers.%Size(), "Validation for Headers")

error - INVALID OREF>TestAccountSearchWithoutAccount+6

Hi All,

I am trying to execute my SQL query using ExecDirect() method and it returns a ResultSet. No doubt it works fine after this I am trying to fetch each value using a loop code below. But before that, I am also checking for %SQLCODE = 100 which is for an empty resultset I think. However, It is not working as desired. In the case of an empty resultset also I am getting %SQLCODE = 0 until result.%Next() is called. Also, %ROWCOUNT is giving 0 in a case where my query is return 1 result row. I am so confused about this.
while resultset.%Next() {

// code

}

Has anyone come across a good using Embedded Python to convert a Python List object to an IRIS %List object?

My use case is I want to open an SQL entry with an Objectscript class method, then pass some information from that row into a separate Python class method which will then create a Python List object, then have the Python class method return that list back to the Objectscript class method in such a way that the Python List can be converted to an IRIS %List object for me to then use in the Objectscript code.

Hi Developers,

Enjoy watching the new video on InterSystems Developers YouTube:

⏯ Why Horizontal Scalability Is Like Teamwork @ Global Summit 2022

https://www.youtube.com/embed/hIuV0EcCW0Q
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I need to convert "dd/MMM/yy" to "YYYYmmdd".

Input = dd/MMM/yy

Output = YYYYmmdd

example

Input = 13/Jun/23

Output = 20230613

I used below , I get 1923 as year but I need 2023.

$ZDATE($ZDATEH("13/Jun/23",8),8) = 19230613

IoT (Internet of Things) is a network of interconnected things, including vehicles, machines, buildings, domestic devices or any other thing with embedded TCP/IP remote connection available, allowing it to receive and send execution instructions and data. Each thing provides one or more services to the IoT network. For instance, smart light bulbs provide services of turning off and turning on the lights; smart air conditioners maintain the environment temperature; smart cameras send notifications when capturing movement.

Hi,

Looking for some guidance on setting up IRIS to use single sign on to authenticate with ADFS.

We have a request for users to automatically launch IRIS without the need to login, the user will be authenticated by Single Sign on (SSO) against ADFS.

Do we need to have a authorization server as well as a client, ADFS will handle all the authentication side, so would it be a case of configuring IRIS client up to communicate with ADFS, following the link below?

As you all know, the world of artificial intelligence is already here, and everyone wants to use it to their benefit.

There are many platforms that offer artificial intelligence services for free, by subscription or private ones. However, the one that stands out because of the amount of "noise" it made in the world of computing is Open AI, mainy thanks to its most renowned services: ChatGPT and DALL-E.

Hello all,
I am creating a REST API with a spec-first approach. However, I am using the try-catch method to handle any exception if any occurs. But whenever any error related to syntax or something occurs, we get internal server error

{

"errors": [

{

"code": 6220,

"domain": "%ObjectErrors",

"error": "ERROR #6220: Internal Server Error",

"id": "InternalError"

}

],

"summary": "ERROR #6220: Internal Server Error"

}

Hi folks!

Consider I need to call a python function which name contains "_" symbol (which is quite often in Python). How it could be called from ObjectScript?

E.g. here is the code:

InterSystems FAQ rubric

Countermeasures against SQL injection have been published on various websites, but we believe that it is possible to prevent SQL injection in applications using InterSystems SQL as well as other RDBMS by implementing these countermeasures appropriately. In addition, InterSystems Data Platform (hereinafter referred to as IRIS) incorporates several measures that make SQL injection more difficult than general RDBMS.