The attached file contains two $system.Event examples that processes work asynchronously using persistent queues:

• Events_Simple.prj.xml
• Events_PubSub.prj.xml - updated this example has been published on https://github.com/intersystems-ib/cache-iat-pubsub

Events_Simple

This is a very basic example that creates some worker processes and then enqueue messages to them using $system.Event.

If you have worked with Caché Objects,
You know already all about Relationships (one:many , parent:child) ...
But you will not find a word on many:many relationships in the docs.

But I met the question quite often from new adopters of Caché objects:
"Is it possible to implement many:many relationships ?" YES - of course !

During a major version upgrade it is advisable to recompile the classes and routines of all your namespaces (see Major Version Post-Installation Tasks).

Hi,

This must be a really easy question but for some reason I am unable to do this

I have a string name = "ERRORMSG"

I want to remove the first 2 characters in the string, so the result should be string newname = RORMSG

Please can you advice on how I can do this?

Hi !

There is a BusinessService be called by several callers,but now I get this error below on Event Log page:

<Ens>ErrGeneral: Failed to create document from string:

ERROR #6301: SAX XML Parser Error:processing instruction cannot start with 'xml'
while processing Anonymous Stream at line 1 offset 106

What may be the cause of this error？

How can I locate the parameter that caused this error?

Hi everyone!

Just wanted to share here a quick post about my project for the Grand Prix :)

When using the JSON_OBJECT() function in Caché SQL on a %String property that contains JSON syntax, it converts the %String into a JSON object instead of escaping it as a string literal. How can I prevent this? (without ridiculous hacks like "add a space to the beginning of the value" as we don't always know which properties will contain these values and I certainly don't want to have to check for nulls and add/remove a space every single place this value is used in the application)

I don't want these strings automatically marshalled into JSON objects.

For example:

I'm trying to learn how To use SQL in CACHE, so I hope I don't bore you with "Dumb" questions....

I'm getting "ERROR #6022: Gateway failed" message following this line of code.

s sc=gc.Prepare(hstmt,pQuery) 

This line of code comes from an example I found in the documentation. pQuery is the "Select" statement setting up the variables and tables I'm trying to pull information from.

What does that error indicate?

Thank you.

Hello,

I am looking for a routine or global that can help me see what is the REST Operation output. Similar to ISCSOAP for SOAP web services operation.

Thanks

Raghu

I am using OAuth2 Cache framework, acting as a client to an authorization server. My setup is based on this excellent previous post [Caché Open Authorization Framework (OAuth 2.0) implementation – part 1].

I'm facing ‘Authorization Server Error: Error Processing Response - No match between server name 'googleapis.com' and SSL certificate values google.com…’

It looks like I should set SSLCheckServerIdentity to false but I can’t figure out how. Has anyone had the same issue?

Hi Developers!

As you know InterSystems IRIS Interoperability solutions contain different elements of the solution, such as: production, business rule, business process, data transformation, record mapper. And sometimes we can create and modify these elements with UI tools. And of course we need a handy and robust way to source-control the changes made with UI tools.

For a long time this was a manual (export class, element, global, etc) or cumbersome settings procedure, so the saved time with source-control UI automation was competing with lost time to setup and maintain the settings.

Now the problem doesn't exist any more. With two approaches: package first development and usage of IPM package git-source-control by @Timothy Leavitt
.

The details are below!

My major interest is Working with Globals in Embedded Python.
So I checked the available official documentation.

#1 Introduction to Globals
an attempt of a generic description of what a global is. Pointing to

Hi all.

I have a process/operation within Ensemble that grabs a PDF from a webservice, and then saves it to an external location. All is well, except I am noticing that a lot of .Stream files are being stored on the Cache Server.

Does anyone know what causes these to be stored and what would trigger their removal? Would I be right to assume these would be removed if I ran Ens.Util.Tasks.PurgeMessageBank and the creation dates fell within the purge range?

Edit: I answered my own question on if the purge would clear them out. The answer is yes.