Hi developers!

I just want to share with you the knowledge aka experience which could save you a few hours someday. 

If you are building REST API with IRIS which contains more than 1 level of "/", e.g. '/patients/all'  don't forget to add parameter 'recurse=1' into your deployment script in %Installer, otherwise all the second and higher entries won't work. And all the entries of level=1 will work.


- will work,  but


- won't.  

Here is an example of CSPApplicatoin section which fix the issue and which you may want to use in your %Installer class:

    <CSPApplication Url="${CSPAPP}"

1 0 113

Pretty straight forward.

I'm tempted to hard-code ISO-8859-1 inside my VSCode extension when working with CSP because this seems to be the encoding used by default, but I need to know if there's any other possible configuration. So can you share your experience when working with CSPs? Like issues with encoding, discoveries regarding it, workarounds etc.

Also, can someone tell me if it's possible to work with UTF-8 encoded CSP files using Atelier without breaking the encoding of the output file?

1 3 200

Index to Articles

Published 2018-05-11 Last edit -

Hi All

I this article I detail some strategic issues that a new development UI will need to address - these are the ones that I can think of now - others may come to light during this journey.

See the webinar by Eduard Lebedyuk here from the last Global Summit describing  modern web development and Caché

And, as always, if I have missed something please comment....

2 13 1,063

Hi, I have used CSP to exec SQL selects from  any own NAMESPACE. But in our servers we have many SQL GATEWAY CONNECTIONS.

I'd like to create a CSP page that could use these gateway to exec SQL using these gateway connections, only Administrators will use that page to launch many select at many dsn. I'm not sure if we must deploy that CSP on %SYS namespace and how to use DSN(SQL Gateway connections) that are defined on server.

Anoyone has made that?

For example:




CSP Webpage:

TEXTBOX: Introduce your select:

0 1 153

Hello, has anyone tried to use Caché as a reverse proxy ?

We are trying to embed a dashboard server (Plotly Dash in this case, but it could be anything which runs on its application server) inside our application which is written in Caché.  
The dashboard/report server runs locally (for example, or inside a LAN) on port 8080, and has no authentication features, so we have to implement them on a different layer, and we'd like to use Caché for it.

0 5 265

Some time ago, InterSystems introduced the concept of %DynamicObjects.
This feature is a powerful tool that makes it very easy to convert any string of JSON text to objects and vice versa.
However, in the work that J2 Interactive is doing for our customers, there are a couple of things that "need some tweaking".

2 3 616
David Crawford · Jul 31, 2019 2m read
Anti CSRF Methods

IRIS provides us with anti login CSRF attack mitigation, however this is not the same as a CSRF attack, as login attacks only occur on the login form. There are currently no built-in tools to mitigate CSRF attacks on api calls and other forms, so this is a step in mitigating these attacks.

See the following link from OWASP for the definition of a CSRF attack:


1 5 354
David Crawford · Jul 15, 2019
Non CSP Files

CSP pages extend %CSP.Page. What about html/css/js/etc that are hosted on the same web application? Is there any way to override how they're processed like with how you can override a CSP page and CSP REST logic?

Thank you!


1 4 170

Hey Intersystems-Developer,


I have already used that and know its possible, but can't find it anymore :(


I need dynamic access on proxy objects. For example:

set key = "lastName"

set name = obj.name

set lastName = obj.key <- Not possible 

set lastName = obj.GetAt(key) <- Not possible


How can I get access to that object with my dynamic variable "key" ?


Best regards. 

0 3 174

Hello experts,

I'm new to InterSystems software and still not so familiar with it. Therefore I do apologize in front if this question is irrelevant, not making sense or answer is commonly known.

I've did my best in search for answer, but unfortunately i haven't found anything helpfull. So I decided to ask for help here.


My problem is repetitive error which occure in CSP Gateway event log : 

Error Condition: Failed to read posted content from the client (Content-Length: 1404; Data Actually Read: 0; Read Error: 70007)

0 1 215

I have a query that I would like to  have refreshing at certain intervals lets say every 30 seconds with out refreshing the page content using the META TAGS

refreshes the whole page but I have a jquery function that will run at those intervals that I can use the problem is getting the jquery to call my COS function or is the way to do it with pure COS


0 2 191
Thembelani Mlalazi · Apr 5, 2019
How to compare time

I am trying to get the time difference between two time stamps one is recorded earlier to the one happening current but the problem is sql expect string while I have the other stored in a variable and if I do the following I get errors any help please




please note that tx is a variable holding the time formatted the same way as the one being compared to

0 3 241

On one of our servers, when I am in Mgmt Portal and click the link for Configure / CSP Gateway Management, I get this url:


but the page displays a 0, and nothing else. Literally, just a 0.  This link works on our other servers, with the same URL.  Any idea why? 




0 4 147
Thembelani Mlalazi · Mar 12, 2019
String to date

I am trying to convert a string to date but can not get it to work I have  function that I would like to take in a date string and covert it to date object

here is the ezample so far can not get it to work any help appreciated 


set p="12/03/2019"
w $System.SQL.TODATE(p,"YYYY-MM-DD")
<ILLEGAL VALUE>todate+32^%qarfunc

if I try this still get the wrong value returned

set p="12/03/2019" 
w $ZDATE(p,3)


0 6 1,434


I'm trying to set up an Apache server using CSP Gateway on Windows 10 (64-bit), but am getting the  error "Cannot load c:/InterSystems/IRIS_2019/CSP/bin/CSPa24.dll into server: %1 is not a valid Win32 application" when attempting to start up httpd.exe after adding the CSP-specific section to httpd.conf.

The CSP gateway is 64-bit (CSPGateway-2018.1.1.643.0-win_x64) and so is the Apache install (httpd-2.4.38-o102q-x64-vc14).

The CSPa24.dll file does exist in the specified location. 

Any suggestions appreciated.

Thank you,


0 5 386

I'm trying to test SOAP integration by using one Ensemble production to send a SOAP message to another production, but I'm seeing the following error when I try to pass a message between the two:

ERROR #6248: SOAP response is a SOAP fault: faultcode=Server
faultstring=Internal Server Error
<error xmlns="http://tempuri.org">
<text>ERROR #7900: Service 'SOAP' not enabled for application '/csp/healthshare/hspc/'</text>

0 4 498
Robert Cemper · Feb 8, 2019 2m read
Client for WebSockets based on CSP
This is a coding example working on Caché 2018.1.3 and IRIS 2020.2 
It will not be kept in sync with new versions 
It is also NOT serviced by InterSystems Support !

WebSockets as a communication technology wins increasing importance.
In the SAMPLES namespace, you find a nice example for running a WebSocket Server.
There is also a useful example for a Browser Client. But it is still in the browser. 

My point is:
How to consume the output of a WebSocket Server in your application?


0 0 312


I have been trying to implement SPA using routing between two components in a CSP page. 

If i use the line which i commented the page views and gets data from the vue instance (when not using the <route-view> and other 2 vue route functions below).

since i need to implement routing i am using as below, now the property "selectedYear" is not getting data from vue instane and i am getting the below error as well.

I dont know whether i am going down the right path.

please see my code below and help me

1 0 1,321