First webinar on  InterSystems API Management!

We are pleased to invite you to the upcoming webinar in Russian: Introduction to InterSystems API Management on November 21 at 10:00 Moscow time (GMT+3)!

As you might have heard, we recently introduced the InterSystems API Manager (IAM) - a new feature of the InterSystems IRIS Data Platform,
enabling you to monitor, control and govern traffic to and from web-based APIs within your IT infrastructure.

In this webinar I will highlight some of the many capabilities IAM allows you to leverage. InterSystems API Manager brings everything you need:

InterSystems API Management (IAM) - a new feature of the InterSystems IRIS Data Platform, enables you to monitor, control and govern traffic to and from web-based APIs within your IT infrastructure. In case you missed it, here is the link to the announcement. And here's an article explaining how to start working with IAM.

In this article, we would use InterSystems API Management to Load Balance an API.

In our case, we have 2 InterSystems IRIS instances with /api/atelier REST API that we want to publish for our clients.

There are many different reasons why we might want to do that, such as:

The question is pretty much in title. I'm developing a REST API, it has a search endpoint with 10 optional parameters. How do I pass them and stay RESTFul?

To ease the question a bit let's agree that:

• all parameters are AND parameters, user can't make combos, ORs, etc. User can only provide values
• all values are integers so I don't have to think about URL limits
• all values are atomic
• all conditions are about equivalency

Some options I know of:

1. URL parameters.

GET /search?param1=value1&param2=value2...

Quick and easy but I'm not sure it's really RESTFul

2. POST body

This series of articles would cover Python Gateway for InterSystems Data Platforms. Execute Python code and more from InterSystems IRIS. This project brings you the power of Python right into your InterSystems IRIS environment:

• Execute arbitrary Python code
• Seamlessly transfer data from InterSystems IRIS into Python
• Build intelligent Interoperability business processes with Python Interoperability Adapter
• Save, examine, modify and restore Python context from InterSystems IRIS

Other articles

The plan for the series so far (subject to change).

We're back with more AI, more ML and more presenters!

We are pleased to invite you to the upcoming webinar in English: AI Robotization (Python, R, Interoperability) for InterSystems IRIS on November 7 at 11:00 EST!

I need to know the current rss memory consumption. On earlier Cache versions I used this method:

set sc = ##class(%Net.Remote.Utility).RunCommandViaZF("smem -u cacheusr | grep cacheusr | awk '{print $6}'",,.rss)

It doesn't work because we use $zf(-100) on IRIS 2019.1.

New version:

What's the best way to replace character groups?

I want not to remove character groups as $zstrip does but to replace them with whitespaces.

$translate needs explicit character list.

Effectively I want to remove any characters besides letters, numbers and a small (known) subset of punctuation characters, replacing everything else with whitespaces.

I'm happy to announce the latest Python Gateway release.

This is not an InterSystems product, it is community supported open source project.

Download new release from GitHub.

Now for the new features.

Fast transfer. Pass globals, classes and tables from InterSystems IRIS to Python with ease and speed (10x faster than old QueryExecute). Documentation.

Proxy Gateway allows generation of ObjectScript classes for Python classes. Instantinate objects, call object and class methods using familiar ObjectScript code (docs).

Code golf is a type of recreational computer programming competition in which participants strive to achieve the shortest possible source code that implements a certain algorithm.

Here's a list of Code Golf competitions we had on Developers Community.

• Output 9876543210 without using numbers
• How can I make my text behave in accordance with gravity?
• Drawing Boxes
• FizzBuzz

And some interesting challenges:

• Can you crack the Black Box?
• Convert Cyrillic to Latin

Did I miss something? Add more challenges in comments.

Just wanted to share my Zabbix template for monitoring InterSystems IRIS on Linux servers.

It monitors irisusr (configurable) memory consumption:

• Virtual memory size
• Percentage of real memory
• Resident set size
• Size of data segment
• Size of code segment
• Peak resident set size
• Size of locked memory
• Size of shared libraries
• Peak virtual memory size
• Size of pinned pages
• Size of page table entries
• Size of process code + data + stack segments
• Size of stack segment
• Size of swap space used

How to use:

Is there a way to set null in dynamic object without using %Set methods?

I have this method and I need to set NULL as, well, null and not string.

ClassMethod node(name) [ CodeMode = expression ]
{
{
    "name":(name),
    "content":($case(##class(%Dictionary.ClassDefinition).%ExistsId(name), $$$YES:"mycontent", $$$NO:"NULL"))
}
}

I'm writing "Finder"-like dialog and need to get list of BPL classes.

The query is dependent on current "path" - it outputs all BPLs in the current path (if any) and all sub-packages which contains BPLs.

So far I have this query:

Query getBPL(path, needPlus = {(path'="")}) As %SQLQuery
{
SELECT DISTINCT $PIECE(Name, '.', 1, $LENGTH(:path, '.') + :needPlus) Name
FROM %Dictionary.ClassDefinitionQuery_SubclassOf('Ens.BusinessProcessBPL')
WHERE Name %STARTSWITH :path
}

My problem is, if I'm not in "root" path I need to add additional dot level, but in root path I only need to add one.

I want to execute initialization code on the start of my business process.

I thought OnInit is a way to go, but apparently not - ^dbg global remains empty:

Class Test.BP Extends Ens.BusinessProcess
{
Method OnInit() As %Status
{
    Set ^dbg = 1
    Quit $$$OK
}
}

Ideas?

I have BPL BP and BO.

To call BO I need to populate the stream property of the request message.

What's the best way to do it?

 I have two local instances:

• IRIS for Windows (x86-64) 2018.1.2 (Build 626_3U) Wed Jun 12 2019 19:07:59 EDT
• IRIS for Windows (x86-64) 2019.1 (Build 510U) Thu Mar 14 2019 14:13:37 EDT

I'm using Java Gateway to talk to external system.

Both instances are using the same:

• jar
• generated class
• java version

They are calling the same method with this java signature:

package isc.rabbitmq;
public class API {
    public void sendMessage(byte[] msg) throws Exception {}
}

On the InterSystems IRIS side I'm calling it like this:

Let's have a round of CodeGolf!

As usual the goal is to write the shortest solution for a specified problem.

Today we have one of the classics: FizzBuzz.

Write a program that prints the numbers from 1 to 100.

But for multiples of three print “Fizz” instead of the number and for the multiples of five print “Buzz”.

For numbers which are multiples of both three and five print “FizzBuzz”

I have this fact table

And the cube which is pretty much 1:1.

I have build an MDX:

SELECT NON EMPTY [Measures].[Error] ON 0,NON EMPTY [CheckTime].[H1].[Minute].Members ON 1 FROM [CHECKCUBE]

Which produced this chart in DeepSeeWeb (there's obviously more data, but you get an idea):

However, I want to add a Marker - if it equals 1 then I need some indication on the chart, so the graph should look like this:

Is there a way to do that in DeepSee or DeepSeeWeb?

From inside Business Service (OnProcessInput method specifically) I want to determine if Ensemble tries to shut down the job.

Is it possible? How?

When I describe InterSystems IRIS to more technically-minded people, I always start with how it is a multimodel DBMS at its core.

In my opinion that is its main advantage (on the DBMS side). And the data is stored only once. You just choose the access API you want to use.

• You want some sort of summary for your data? Use SQL!
• Do you want to work extensively with one record? Use objects!
• Want to access or set one value and you know the key? Use globals!

How do I set environment variable for current process?

set env = "MYVAR"
set s = $ZF(-1,"export " _ env _ "=2048m")
set val = $system.Util.GetEnviron(env)
zw val

Returns val="" because $zf(-1) spawns new process.

I have one persistent, xml-enabled class.
I need to convert objects of this class to XML.
However I need to project each object in different ways (depending on
where I send it), for example:

• Different list of attributes are projected
• Attributes have different names
• ...

Is there a way to do that with XML Adaptor?

How do I send request on production start?

Here's what I got so far in my production class:

ClassMethod OnStart(pTimeStarted As %String) As %Status
{
    job ..InitialTraining()
    quit 1
}

lassMethod InitialTraining() As %Status
{
    hang 5
    set sc = ##class(EnsLib.Testing.Service).SendTestRequest(...)
    quit sc
}

Is there a better way without hang, etc?

I have a class defined like this:

Class test.ABC Extends %RegisteredObject   {

Property myProp As %Binary [ Internal, Private ];

}

Is there a way to get a value of myProp from outside of the object?

I can't modify or extend the class obviously.

This series of articles would cover Python Gateway for InterSystems Data Platforms. Execute Python code and more from InterSystems IRIS. This project brings you the power of Python right into your InterSystems IRIS environment:

• Execute arbitrary Python code
• Seamlessly transfer data from InterSystems IRIS into Python
• Build intelligent Interoperability business processes with Python Interoperability Adapter
• Save, examine, modify and restore Python context from InterSystems IRIS

Other articles

The plan for the series so far (subject to change).

I managed to use CacheGlobalOrder to iterate over global and return the next subscript:

I'm using callin to get global values.

Here's a simple function to get string value from global and return it:

This series of articles would cover Python Gateway for InterSystems Data Platforms. Leverage modern AI/ML tools and execute Python code and more from InterSystems IRIS. This project brings you the power of Python right into your InterSystems IRIS environment:

• Execute arbitrary Python code
• Seamlessly transfer data from InterSystems IRIS into Python
• Build intelligent Interoperability business processes with Python Interoperability Adapter
• Save, examine, modify and restore Python context from InterSystems IRIS

Index

The plan for the series so far (subject to change).

I have a lot of string properties, which need custom but similar Getters and Setters.

Currently I'm generating Getter and Setter in class generation code but that expands class definition.

Is there a way to specify custom datatype which would generate custom getters and setters?

The titular question was quite relevant and often discussed some thirty years ago. The thought went: “Sure, there are industries where computers are the norm, but in my industry we got just fine so far, the benefits are questionable, problems innumerable and unsolved. Can we continue as before or should we embrace this new technology?”

Today, everyone asks the same question but about Machine Learning and Artificial Intelligence. The doubts are the same – lack of expertise, lack of known path, perceived irrelevancy to the industry.

How can I remove elements from $lb property? Specifically last element?
$list does not work with $lb properties.
$listupdate can't remove elements
The only solution I found is a temp variable and $list, but isn't there something better?