InterSystems ObjectScript is a scripting language to operate with data using any data model of InterSystems Data Platform (Objects, Relational, Key-Value, Document, Globals) and to develop business logic for serverside applications on InterSystems Data Platform.
Since I saw many posts on Developer Community related to Python, and the very good articles and application written by @Eduard Lebedyuk I was wondering: "As a Object Script developer, why would I want to use an other language in Object Script?
Sometimes it is necessary to execute commands from the shell of the host operating system, where your ObjectScript program is located, to launch programs, operating system services, schedule crontasks, among other activities. For this, the language has a utility procedure called $ZF(-100). See:
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N.P.M. is a Project & Task Management app that uses InterSystems IRIS and Bootstrap 4.
No Project Mess is created to help developers and small business companies to reduce complexity in their daily problems, with a simple and intuitive projects and tasks management software.
It offers different views for your tasks, from a spreadsheet, kanban, calendar, or even Gantt!
Error management on InterSystems languages has been evolving along time. Next, we will show the different implementations and why you should use the TRY/THROW/CATCH mechanism.
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I believe the simplest is (to work with csv delimited by ";"):
set file = ##class(%File).%New( "data.csv" )
set sc = file.Open( "R" )
if $$$ISERR(sc) quit ; or do smth
while 'file.AtEnd {
set str=file.ReadLine()
for i=1:1:$length( str, ";" ) {
set id=$piece( str, ";" ,i )
write !, id // or do smth
}
}
do file.Close()
Possible options:
different variants of error handling with sc code.
Are there any tools to check the code coverage and to do a lint check for cache object script? Developers will be working with HealthConnect (IRIS based)
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Suppose you have a Github repository with ObjectScript classes but without a Docker environment.
Recently I published a repository with a set of files that form a universal Docker and VSCode environment to let you either import and run your repository in InterSystems IRIS Community Edition on Docker or turn your repository into Docker and VSCode environment for InterSystems IRIS Community Edition.
So in one sentence:
Unpack these files in your folder and you have the Docker and VSCode environment for your InterSystems IRIS ObjectScript application!
Have you ever needed a math function but could not find what you needed and ended up writing your own? Look no further! ObjectScript-Math is here to solve all your math related function needs.
ObjectScript-Math is an Open Source library for ObjectScript Math functions. It is now available on Open Exchange. This library contains a mix of new functions that are not currently available and functions that are available. The existing functions will be wrapped for use from ObjectScript-Math so that all Math functions can have a central location.
This library will continue to grow, so give it a try and give your feedback!
Don't see what you are looking for? Please feel free to submit requests for additional functions or contribute code yourself!
I've been having a blast with the Advent of Code puzzles this year - though I'll be heading into a busy span of time with family soon and will probably drop off toward the end. (At least, that's what always seems to happen - it's a good thing, though!)
Does anyone know of a library that can be used to create Mock objects for Objectscript classes?
Right now, my team has been building mock objects by hand to help circumvent dependencies when writing and executing unit tests, but I always wondered if someone had ever created a Mock library like Mockito to help quicken the process.
In this session, we will discussing SOLID Principle of Programming and will implement in a example. I have used Cache Object Programming Language for examples. We will go step by step to understand the requirement, then what common mistakes we use to do while designing, understanding each principles and then complete design with its implementation via Cache Objects.
Do you want to reap the benefits of the advances in the fields of artificial intelligence and machine learning? With InterSystems IRIS and the Machine Learning (ML) Toolkit it’s easier than ever.
Join InterSystems Sales Engineers, @Sergey Lukyanchikovand @Eduard Lebedyuk, for the Machine Learning Toolkit for InterSystems IRIS webinar on Tuesday, April 23rd at 11 a.m. EDT to find out how InterSystems IRIS can be used as both a standalone development platform and an orchestration tool for predictive modelling that helps stitch together Python and other external tools.
One of the features I like in InterSystems ObjectScript is how you can process array transformations in a specific method or a function.
Usually when we say "process an array" we assume a very straightforward algorithm which loops through an array and does something with its entries upon a certain rule.
The trick is how you transfer an array to work with into a function.
One of the nice approaches on how to pass the information about an array is using $Name and Indirection operator.
Below you can find a very simple example which illustrates the thing.
Coding Talks is a short video in which the developer demonstrates a particular feature or functionality of InterSystems Data Platforms which he/she uses to in coding. Typical format: the face on side and editor with ObjectScript.
Check this video I made by myself participating in Advent of Code 2018 and coding with InterSystems ObjectScript in VSCode.
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Did you know that Caché (and now InterSystems IRIS) has available parser for ObjectScript ?
Well, technically, lexer. It hides under the name of %SyntaxColor class. This class provides API to the DLL used by Studio to do syntax highlighting. As a result if works only under Windows.
This code snippet allows for a file on the web to be saved into the file system. Specify the server and GET request, as well as the directory the file should be saved to. The class method "test" runs the code:
Class objectscript.saveFileHTTP Extends %RegisteredObject
{
classmethod test() {
Set httprequest = ##class(%Net.HttpRequest).%New()
Set httprequest.Server = "docs.intersystems.com"
Do httprequest.Get("documentation/cache/20172/pdfs/GJSON.pdf")
Do $System.OBJ.Dump(httprequest.HttpResponse)
Set stream=##class(%FileBinaryStream).%New()
Set stream.Filename="c:\test.pdf"
Write stream.CopyFrom(httprequest.HttpResponse.Data)
Write stream.%Save()
}
}
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