#Caché

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InterSystems Caché is a multi-model DBMS and application server. See more details here.

Documentation.

Question Ali Chaib · Feb 7, 2025

I understand that InterSystems provides functions to facilitate transactions between FHIR and HL7 via the SDA segment. My question is:

  • Does this transformation only work when InterSystems receives FHIR requests and converts them into HL7, or does it also support responses?
  • Specifically, if our operation sends a GET request to a broker and receives a FHIR response, does InterSystems support transforming this response into an SDA segment automatically?
  • Or should we manually parse and modify the response to handle it according to our needs?

What would be the best approach in this scenario?

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Question Eduard Lebedyuk · May 18, 2016

In MySQL I have the following table:

CREATE TABLE `info` (
   `created` int(11)
);

And it is linked (via JDBC SQL Gateway) to Cache table mysql.info.  `created` field stores unix timestamp. So when I execute  this SQL in SMP:

SELECT created FROM mysql.info

I receive the following output (which is expected):





created
1435863691
1436300964

But I want to to display `created` field converted to ODBC timestamp format. To do that I call this SQL procedure

Class mysql.
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Question Thomas Haig · Feb 4, 2025

At the moment we're creating multiple BPLs are using a router (or another BPL) to direct to these based on a unique key modulo the amount of BPLs available, e.g. if we have 3 BPLs created.
Message key = 1 mod 3 + 1 -> BPL02
Message key = 2 mod 3 + 1 -> BPL03
Message key = 3 mod 3 + 1 -> BPL01
FIFO only matters in that each messages for each key is processed in order.
What we were considering doing is increasing the pool size to 3 and programmatically creating a BPL on each thread that processes messages that would be directed to it, rather than having to create multiple BPLs into the production.

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Question Deepa Shahi · Feb 3, 2025

On Encounter container we want  to map some data from Z segments is that possible?  Presently the mapping from HL7to SDA3 is taking place from HL7 defines segments . is there a way to push the data from Z segment.

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Article Robert Cemper · Feb 3, 2025 3m read

Host Variables are a rather common programming feature in many implementations of SQL. 
A recent question in DC made me aware that in IRIS, Caché, Ensemble, ... 
host variables just exist within embedded SQL

>  You can supply host variables for Embedded SQL queries only. <

Related examples are included in the available Documentation

This is a description  for a workaround if you don't / can't use embedded SQL.

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Question isayas mola · Jan 30, 2025

Hi everyone,
I am trying to create a listen server in Cache 2016 that can capture data from a specific port. Can someone guide me on how to set this up, including handling incoming connections and reading data from the port? Any advice or example code would be much appreciated!

Thanks in advance!

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Question André Suhnel · Jan 30, 2025

Hello,

I'm trying to add another segment to an HL7 MDM message. More specifically OBXgrp(1).OBX. The addition itself works,. When I look at the message in the trace, the segment with the content can be seen. However, it is not displayed as an OBX segment.

Build Map Status = 'ERROR <EnsEDI>ErrMapRequired: Missing required OBXgrp(1) element at segment 6'
'ERROR <EnsEDI>ErrMapSegUnrecog: Unrecognized Segment 6:'' found after segment 5 (TXA)'


// HL7-Nachricht klonen
    Set response = msg.%ConstructClone()

// OBX-Segment erstellen
    Set tSegmentOBX = ##class(EnsLib.HL7.Segment).
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Question Frank Jackson · Jan 24, 2025

Hello,

Very much keen if we could gather the per namespace and business component utilization of InterSystems cache server.

For e. I have a PRD server where its CPU utilization is at max all the time and I want to know which namespace and its business process (service/Operation/Process) is utilizing what number of CPU and memory.

** I can get the CPU and Memory utilization per Cache.exe and PID, but not able to get the Namespace and ConfiguratioName to which that particular PID belongs.

Thank you,

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Question omer · Jan 15, 2025

Hey, So the title pretty much describes the question:
Where and How can i see the Stream that contains the response back to the client of a CSP application.
When the request is being processed and finished we return a response to the client - We do that by writing the data to a stream and that stream is sent back to the client.
I wanted to know how i can access the point right before that Data is actually written to the client back (meaning the place where the response is actually being send back, the last point of contact).

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Question Andre Ribera · Jan 21, 2025

I'm working on some code that would benefit from being able to see whether or not a project file has been saved in Studio.
I can see when I make changes, that the project name has an asterisk added to it:

In searching for it, however, I haven't been able to find any methods or calls to access the property/check that controls that asterisk.
My question is whether anyone out there knows if that is accessible and if so then how can it be accessed.
I'd like to add a check in my code that enforces that the project file must be saved prior to proceeding with the intended action.

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Question Gabriel Silva dos Santos · Jan 17, 2025

Hello everyone,

I’m facing issues with replicating data from my Caché 2016 database to a PostgreSQL database. I need to handle around 300 data updates per minute, and whenever certain tables are modified, those changes must be reflected in other databases.

So far, I’ve tried various approaches, including:

  • Setting up an intermediary API,
  • Using Azure Service Bus,
  • Leveraging Caché Jobs,
  • All of which rely on table triggers as the entry point.

However, each of these solutions has led to performance bottlenecks and system lockups.

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Question Oliver Wilms · Jan 19, 2025

I inherited some legacy MUMPS / ObjectScript code. A code review identified an exclusive NEW and that is not allowed per our coding standards.

The original code contains:

RUN(CALL,DRVNAME)
 S $EC=""
 S ^TMP($J,"RMPV","DRVNAME")=DRVNAME
 N TMPFILE,OLDIO
 S OLDIO=$IO
 I $G(^TMP("RMPV","SILENT"),1) S IOP="NULL",%ZIS=0 D ^%ZIS I '$G(POP,1) U IO
 D INIT^@DRVNAME
 D  ; scope variables
 .N (DUZ,CALL) ; Protect %response
 .S IOF="""""",IOM=80,U="^"
 .

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Question Ali Chaib · Jan 9, 2025

Everytime I try to send a POST FHIR bundle I'm getting the following response: 404 Not Found. I'm not really sure why, although it works fine with a GET!

This is an example: 

 Response:

It might be something related to request path but not really sure.

And this is the HTTP service I'm using 

I tried this with Postman and it's working as expected

Am I missing something ? 

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Question Hugh Hamilton · Nov 16, 2023

We have a service account that is running queries to pull some data.  It has read only access to the tables, but, unfortunately, the tool is starting a transaction before it reads the database.  The query takes more than 20 minutes (21 - 23 minutes), so we're getting the console message that the transaction is open longer than 20 mins.  Is there a way to prevent a user/service account from being able to start a transaction since it only has read access to all of the tables in the database?

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Question Marc Mundt · Jun 21, 2016

A customer is using Caché online backups and needs to automatically purge the cbk files with a scheduled task.

This is a wheel has been reinvented uncountable times already and I know somebody out there has a well written, extremely robust version that has already stood the test of time.

Does anyone have a nice routine/class/task for purging old Caché backup files? 

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Question omer · Jan 12, 2025

Hello, 
In short, I am trying to get the Content-Length of my response, 

We have a CSP application, when we get a new request we begin to process it, throughout the app we WRITE to the response in different places, 
now when the response is about to be sent back to the client - we would like to know its Content-Length (in the RESPONSE HEADERS). 
So it comes down to two questions:
1. How can we access the Content-Length of our response?

2. In case we CAN'T - Where in the broker.cls/page/base classes can I observe the moment we actually write the response itself and attach its headers?
Thank you!

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Question Lee Butcher · Dec 3, 2024

I'm attempting to build a fairly complicated object graph, with nested objects and collections, in order to create a FHIR bundle.

In its most basic form there is a <bundle></bundle> element that represents the root, and there can be a number of nested <entry></entry> child elements.

I'm attempting to represent this as such:

class Bundle (%RegisteredObject, %XML.Adaptor)
{
    Property Entries As List Of Entry;
}

The problem is when this is projected it nests each Entry object within an Entries container, which makes sense but I don't want this.

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Question LI LINFENG · Jan 6, 2025

I have installed three plugins on VS Code: Intersystems Language Server: v2.3.6, Intersystems ObjectScript: v2.10.5, and Intersystems Server Manager: v3.6.2. I connected to the Caché database and connected a workspace to the InterSystems server. Then I edited the code locally on my client machine. However, only modifying the code and adding new code files allow for automatic updates on the server after executing "import without compilation.

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Question Dan Murt · Jan 3, 2025

Hi Community,

I have a CSP page I am developing with the intent of pulling files from an SFTP site and placing them in a folder on the local network.

I am having an issue where the CSP page is catching a JS error. The error in the browser is - A JavaScript exception was caught during execution of HyperEvent: SyntaxError: Unexpected identifier 'downloading'. (However, the unexpected identifier changes after refreshing page, or after removing the Write statement with the work 'downloading' in it.)

I think I have narrowed it down to a piece of the Javascript code - 

#server(

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