Article
· Oct 5, 2016 13m read
RESTful way of data transfer

This article gives a brief introduction how a RESTful service consumer and a RESTful service provider exchange data. It is a beginner’s guide. Data is transferred from a consumer to a provider as parameters of the service. Parameters are part of a service request. The result of the service action a response is returned from a provider to a consumer. Both the service request and response are standard HTTP messages. Since HTTP is a flexible standard regarding to the message contents, RESTful services also enjoy the versatility of data transfer methods.

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Microsoft Office has components for using in third party applications: COM Objects for C++ and Interop Assemblies for .Net programming.

Many Cache projects used to include calls to those libraries. However, recently this solution started being problematic.

There are two main reasons - legal and technical. Let’s check the details.

Microsoft technology support

Microsoft is supporting Office Automation only for desktop computing.

It shall not be used for server computing, as they offer Sharepoint for this scenario. Have a look here:


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Article
· Dec 1, 2016 2m read
Atelier Equivalents for Studio Actions
TaskStudio ActionAtelier EquivalentAtelier Keyboard ShortcutSee also ...
Display line numbers.View > Show Line NumbersWindow > Preferences > General > Editors > Text Editors > Show line numbersCTRL+,Atelier Editor Features: Line Numbers
Code completion assistanceImmediately suggests completions as you type, unless explicitly disabled.You must type CTRL+SPACE to invoke content assist.CTRL+SPACEEditor Content Assist<
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Article
· Feb 14, 2017 1m read
Portal tip: Feel at home on the Home page

Until recently I didn't pay much attention to Portal's home page:

If it's not showing when you initially launch Portal you can easily jump to it using the button / tab at the top of the left-hand column of options. And later during your session, get there via the Home link that will be visible at the top of every page.

On the Home page the "Recent" section is automatically maintained for you.

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Recently I was conducting a remote support session with a site. The desktop they were sharing with me was on a PC configured with German as the native language. Since my German is rather rusty, and virtually non-existent when it comes to computing terms, I was glad to be able to switch the Portal session into English.

This is done from the page that appears when you use the About link:

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Article
· Jul 26, 2017 3m read
What is APM?

What is APM?

I am talking about Application Performance Management at global summit, and several people have asked what that means so it is time for a bit of an explanation.

APM or Application Performance Management (sometimes referred to as Application Performance Monitoring) has a very good (if complicated) explanation on Wikipedia but to me it just means looking at performance from the users’ point of view and the level of service provided to them.

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We just faced an issue of the Atelier main menubar being disabled (greyed out) after upgrading the macOS development machine to High Sierra. I would like to share my findings about the issue and how to fix it.

This seems to be a known problem affecting several Java applications including Eclipse if the macOS user's primary language is not English: https://www.eclipse.org/org/press-release/20170925criticalbug.php

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Where did the RemoteSystemsTempFiles project come from?

If you're using Atelier, you may have noticed a project called "RemoteSystemsTempFiles" in the Atelier Explorer and Project Explorer views. This project is automatically created by the Eclipse Remote Systems Explorer (RSE) on start-up. The RSE allows you to connect to and work with a variety of remote systems.

You can either hide this project within your views, or remove it completely by following the steps below.

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This code snippet sends an XML request to a server and saves the response to a file. The class method "test" runs the code:


Class objectscript.postXML
{
    classmethod test() {
        Set HTTPRequest = ##class(%Net.HttpRequest).%New()
        Set HTTPRequest.ContentType = "text/xml"
        Set HTTPRequest.NoDefaultContentCharset = 1
        Set HTTPRequest.Location = "ITOMCZ"
        Set HTTPRequest.Server = "wph.foactive.com"
        Do HTTPRequest.RemoveHeader("User-Agent")  
        Do HTTPRequest.RemoveHeader("Accept-Encoding") 
        Do HTTPRequest.RemoveHeader("Connection")
        Do HTTPRequest.SetHeader("Expect","100-continue")
     
        Set RequestXML = ##class(%Library.File).%New("c:\test.xml")
        Do RequestXML.Open("RS")
        Do HTTPRequest.EntityBody.CopyFrom(RequestXML)
        Do RequestXML.%Close()
     
        Do HTTPRequest.Post(HTTPRequest.Location)
     
        Do $System.OBJ.Dump(HTTPRequest)
        Do $System.OBJ.Dump(HTTPRequest.HttpResponse)
     
        Write HTTPRequest.HttpResponse.Data.Size
        Write HTTPRequest.ContentLength
     
        Set ResponseStream = ##class(%Stream.FileBinary).%New()
        // Second part is typically the file extension, i.e.: application/pdf -> pdf
        Set FileType = $Piece(HTTPRequest.HttpResponse.GetHeader("CONTENT-TYPE"),"/",2)
        Set ResponseStream.Filename = "C:\test."_FileType
     
        Write ResponseStream.CopyFrom(HTTPRequest.HttpResponse.Data)
     
        Write ResponseStream.%Save()
        Do ResponseStream.%Close()
    }
}

Here's a link to the code on GitHub

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Article
· Feb 8, 2019 2m read
Client Websockets based on Node.js

It will demonstrate the wide range that is openend by making use
of the power embedded in Node.js and its adapter to Caché, Ensemble, Health,..*
Node / JavaScript have wide reputation to work as a WebSocket client.
By using the Caché adapter it becomes easy to control it and to consume the results as a
Client for WebSocket Servers and to collect the replies in Caché, Ensemble, ..

I used node-v6.16.0-x64.msi and cache610.node as cache.node

You provide a Global for input:

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I am just recently announced my project isc-tar. But sometimes it is not less interesting what’s behind the scene: how it was built, how it works and what happens around the project. Here is the story:

  • How to develop this project
  • How to test it
  • How to release new versions for publishing
  • And finally how to automate all above
  • Continuous integration

So, I would like to tell all about it.

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Hi Devs!

Last weekend I had been testing the newborn csvgen module and was looking for a CSV file to test - thus I came across an interesting datafile on Data.World with Game of Throne episodes statistics. Death statistics. These folks documented all the murders through all the 8 seasons and noted where, who, from what clan with what weapon had killed another one.

So I imported it and made an IRIS Analytics dashboard.

You Know Nothing, Jon Snow | You Know Nothing, Jon Snow | Know ...

Don't worry, Jon, with this dashboard we can figure out something ). See the details below.

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Article
· Jun 29, 2020 3m read
Terminal Multi-Line Option


The Command extension enables the execution of Multi-Line Commands from Terminal prompt.

Installation & Execution

Import %ZML.xml to Namespace %SYS

Optionally you may add this line to your %ZLANGC00.mac for a simplified use:

ZML do ^%zml quit  ; add multi line command in terminal

and
USER>zml

otherwise, just call it from the terminal command prompt

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Article
· Nov 21, 2020 3m read
ObjectScript over ODBC

Every now and then you may encounter a situation where for various reasons
ODBC is the only option to access a remote system. Which is sufficient as long as you need to examine or change tables.
But you can't directly execute some commands or change some Global.

Special thanks @Anna Golitsyna for inspiring me to publish this.

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Tiny web application that allows you to anonymize CSV files. Based on InterSystems IRIS®

Version: store/intersystems/iris-community:2020.3.0.221.0

Application

Sample CSV where Date of Birth and Sex will remain untouched, while the rest should be anonymized.

before

The application recognizes the header columns and allows the user to chose which ones to ignore.

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Hi developers!

Often we need to deploy some data along with code pieces of the application.

And for InterSystems IRIS developers the question could sound: "How can I deploy the data I have in globals?"

InterSystems IRIS Globals Model QuickStart | InterSystems

Here I want to suggest to you one of the approaches - deploying global data using the ZPM package manager.

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Article
· Feb 8, 2021 2m read
Websocket Client Embedded Python

This is a demo to make use of a simple WebSocket Client with Embedded Python in IRIS.

How to Test it

  • Run an Iris Session in Docker
  • Select your WebSocket Echo Server
  • Enter the text you want to send or generate it
  • Send it and see the result
$ docker-compose exec iris iris session iris "##class(rccpy.WSockPy).Run()"

*** Welcome to WebSocket Embedded Python Demo ***

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I'd like to share with you some storage features that also exist in Caché but are almost
unknown and mostly not used. They are of course available in IRIS and gain importance
with large and distributed storage architectures.

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Hi developers, 

We've incorporated VS Code's support for multiple concurrent debug sessions and consoles into the latest release of Serenji

So if you're working with processes that relate or are dependent on each other, you can now debug them together. Just launch a second Serenji debug session (F5) whilst the first one is still active. 

This short video below shows how it works. We hope you find this feature useful! 

Laurel 

Serenji 3.2 multiple concurrent debug sessions

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We're hosting our Deltanji and Serenji user group session tomorrow - there's still time to register, if you haven't already.

We'll be showcasing some advanced features of Deltanji and Serenji in VS Code with time for a discussion - so feel free to bring along any problems you need help solving or share your feedback on our tools. We'd love to hear your thoughts. If you're interested in our tools this is a great chance to hear what others have to say, as well as asking your own questions.

Date: Wednesday, November 3rd

Time: 11-12pm EDT / 3-4pm GMT.

Let us know you'll be attending on Eventbrite.

We hope to see you tomorrow, but if you're unable to make it you can email me at laurelj@georgejames.com and I can share a recording of the session.

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Hi developers!

ZPM Package Manager is getting more and more popular and thus the library of packages is growing.

And thus some solutions or samples can be built with InterSystems IRIS and one or two packages installed.

I want to share with you iris-docker-zpm-usage-template - a template that can be used exactly for this purpose.

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For those that, at some point, need to test what means that of ECP for horizontal escalability (computing power and/or users and processes concurrency), but they're lazy o have no much time to build the environment, configure the server nodes, etc..., I've just published in Open Exchange the app/sample OPNEx-ECP Deployment .

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