#Key Question

Hi Developers!

We are introducing a new feature on Dev Community site – Key Questions by InterSystems Developers.

We've added a new special #Key Question tag to highlight questions related to InterSystems Data Platforms considered as having the biggest impact.

Each month InterSystems Experts will choose such questions, and those authors will be awarded with all the honours!

What honours? Details in this post! 

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!

We are a group of interface analysts in a healthcare setting, running IRIS for Health 2024, having upgraded over time from an old ENSEMBLE environment.  We have been working on a wish list of development goals, but are having trouble finding the correct, best practice method/path for getting to what we envision.

Current state:  We run IRIS for Health on a Redhat 8 virtual machine.  We run Interoperability productions (IE.cls) out of 6 namespaces.  We have a dev/test box and a production box.

I have a business service that actively reads data from a remote Postgres database. OnProcessInput opens a XDBC (actually JDBC) connection, executes an SQL query, fetches several thousand rows, iterates the resultset, and closes the connection. On each iteration I also need to update each source row in the remote database using PreparedStatement.

In other words, in every OnProcessInput call I have a long running SELECT statement and several thousands small UPDATE statements.

Hey Community,

It's time for the new batch of #KeyQuestions from the previous month.

In some cases, it's necessary to manipulate data from one namespace to another. For example, a routine in the "N1" namespace needs data from the "N2" namespace. In legacy systems (using only globals), it's common to make the global universal, but what about persistent classes? Is this type of globalization also possible?

In the same context, how could I make a persistent class global for all namespaces? The only way I know is by putting it in %SYS.

The following regex is matching while I think it should not :

write$match("♥","\?") //print '1' (unexpected)

It should only match the '?' character. I think what happen is the ♥ character got converted to '?' (as it's not within regular ascii range) before being validated by the regex engine.

In fact, this give a clue about what happen : 

write$char($ascii("♥")) //print '?'

Is this an IRIS well known limitation, is there workarounds ? Should I report it to InterSystems ?

In my case, a way to detect non standard ascii code in a string will be good enough.

Hey Community,

It's time for the new batch of #KeyQuestions from the previous month.

How to define a For loop in *.inc file?

Is there any way of saving a representation of the results of a query created in the Message Viewer to a file - most obviously CSV.

We are reasonably adept at creating queries. We'd like to be able to send the output to a file, rather than resorting to cut'n'pasting from the message viewer window...

Is this possible? (on any version of Ensemble/Iris?)

Desired output to file something like:

ID,TimeCreated,Session,Status,Error,Source,Target,Body_MSH_MessageControlId,.....
1,8888888,2025-08-20 05:03:14.324,8438123,Completed,OK,ICE ADT Validator,ICE ADT TCP,1z123456,20220822......

Hey Community,

It's time for the new batch of #KeyQuestions from the previous month.

Hey Community,

It's time for the new batch of #KeyQuestions from the previous month.

I am trying to add Plotly Bar graph in a div to a CSPpage. I am working in IRIS 2022.1. I created persistent class.

I copied relevant code into github repo:

oliverwilms/iris-python-plotly
 

iris-python-plotly/csp/otwPlotly.csp at master · oliverwilms/iris-python-plotly
 

Set tPlotlyDiv = ##class(dc.python.test).PlotlyDiv(trnYear,trnMonth)

ClassMethod PlotlyDiv(pTrnYear = 2025, pTrnMonth = 8) As %String
{
    Set importlib = ##class(%SYS.Python).Import("importlib")
    Set plotdiv = ##class(%SYS.Python).Import("plotdiv")
    Do importlib.reload(plotdiv)
    Set div = plotdiv.

Some languages ​​have the concept of a garbage collector for automatic memory management. I'd like to know if something like this exists in InterSystems Caché in the context of routines, %CSP.REST, or %CSP.Page.

The question arises from the %Close() method of the %RegisteredObject class. This indicates that I need to manually clear the object from memory if it's no longer in use, or in the web context, if the request has completed. Is this correct? Or am I completely wrong?

Thank you!

Is there a better way (i.e., without string commands) to remove the fractions of seconds from a %Library.PosixTime value?

This works, but seems inefficient:

set posix = 1154669852181849976w##class(%Library.PosixTime).LogicalToTimeStamp(posix)
2025-05-2712:06:15.003set str = ##class(%Library.PosixTime).LogicalToTimeStamp(posix)
set stripped = $P(str,".",1)
w##class(%Library.PosixTime).TimeStampToLogical(stripped)
1154669852181846976set newposix = ##class(%Library.PosixTime).TimeStampToLogical(stripped)
w##class(%Library.PosixTime).

I am trying to help another group within our organization access a SQL Table that I have created to populate Epic Department Data within our environment and came across the ability to use SQL Seach REST Interface using iKnow.

However, I am having issues trying to get it to work via POSTMAN before I hand off the solution...

the POST URL... https://<servername>/api/iKnow/latest/TESTCLIN/table/osuwmc_Epic_Clarity.DepartmentMaster/search

where osuwmc_Epic_Clarity.DepartmentMaster is the table

In the

Hey Community,

It's time for the new batch of #KeyQuestions from the previous month.

Hello
I want to get the property of a class, sorted by order in storage.

I know we can use
 

Set definition = ##class(%Dictionary.ClassDefinition).%OpenId(className)
        Set listProperty = definition.Properties
        For ii = 1:1:listProperty.Count(){
                    write listProperty.GetAt(ii).Name

But using GetAt sorts the results alphabetically.

Example :

Class Test.classExtends (%SerialObject, %XML.Adaptor, %JSON.Adaptor)
{

    Property tiers As%String;Property journal As%String;
}

listProperty.GetAt(1).Name = "journal" and listProperty.GetAt(2).

Hi,

sometimes we need more then one Iris container at the same time. Since as containers they always have the same instance name shown in the management portal, it is hard to distinguish the management-portals of the instances. Searching for a way to make it easier I thought I could change the instance name shown in the management portal. I tried "iris rename" in different ways but could only change the configuration name which is shown by "iris list", not the name in the management portal.

Hey Community,

It's time for the new batch of #KeyQuestions from the previous month.

1. I like the Application Error Log functionality a lot. However, it becomes time consuming to inspect it date by date and directory by directory on a multidirectory server. Ideally, I would use an existing error class to write a custom error report by date, selected namespaces, etc. Does such a system class actually exist? Not that I found. The detail level on the screenshot below is enough.  
2. Some Application Error Logs go back a couple of years and load for a long while. Is there any programmatic way to clean them?

I seem to remember making this work before, but I'm not having any luck digging up examples.

I've defined some custom properties for a business operation that could definitely benefit from having popup descriptions available in the Production Configuration. I have triple-slash comments before each property that do just that in the source. I thought those provided the text for the popup descriptions when clicking on the property name, but apparently not.

Any thoughts?

Hey Community,

It's time for the new batch of #KeyQuestions from the previous month.

Hey Community,

It's time for the new batch of #KeyQuestions from the previous month.

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 everyone,

I’m new to this community and could really use some help with creating a production in InterSystems IRIS for Health Community 2024.3. I have deployed my instance using Docker.
Here’s what I’m trying to do:

1. Input: I have an HL7 file that is processed by the standard EnsLib.HL7.Service.FileService.
2. DTL Transformation: I’ve created a DTL to transform the HL7 content into a custom class like this:

Class Demo.MyApp.Messages.JSONEvent5 Extends (%Persistent, %JSON.

I cloned @Yuri Marx's langchain-iris-tool repo and modified docker-compose yaml per this post:

https://community.intersystems.

Hi devs!

Suppose I have an instance of a persistent class:

Set person = ##class(dc.Sample.Person).%OpenId(1)

Class is an ancestor of %JSON.Adapter.

How can I convert it to dynamic object with the properties that person.%JSONExport() provides?

{"Name":"Elon Mask","Title":"Associate Accountant","Company":"InterSystems","Phone":"799-933-5569","DOB":"1926-12-11"}

Couldn't find a right method. 

set dynObj = ##class(%ZEN.Auxiliary.altJSONProvider).%ObjectToAET(person) works, but adds id and classname, which I don't want to be added:

zw dynObj
dynObj={"_class":"dc.Sample.

Hey Community,

It's time for the new batch of #KeyQuestions from the previous month.

Hey Community,

It's time for the new batch of #KeyQuestions from the previous month.