I wanted to share a little tidbit which is in the Studio documentation (http://docs.intersystems.com/cache20152/csp/docbook/DocBook.UI.Page.cls?...) but many people who have been using the InterSystems Studio for a long time missed the addition of this *very* useful feature, and every time I mention this to an audience I see at least one face light up because of how excited they are to learn about it!
Within Studio, the Output pane (View -> Output) is actually misnamed. It is actually an Input/Output window which can be used to run Caché ObjectScript commands!
For some years I missed being able to offer, to everybody interested in ObjectScript, a tutorial more or less complete, to start with ObjectScript. Something that could help more and make things easier to those new developers that come to our technology... something intermediate, halfway between the common "Hello World!", that doesn't really get you further, and the "Advanced Training", that is unaffordable because of lack of time,etc.
If there were something truly helpful not only as an introduction to the ecosystem, but as a starting point, as a boost, to really start to walk into ObjectScript and move forward by yourself... wouldn't that be awesome?
Pouring The Coffee: Creating and scheduling a task
Don't you wish a fresh, hot cup of coffee could be waiting for you right when you get into the office? Let's automate that!
Cache and IRIS come with a built-in Task Manager, which should have a familiar feel to those used to using the Windows task scheduler or using cron on Linux. Your user account will need access to the %Admin_Task resource to use it, and you can access it in the management portal under System Operation -> Task Manager. When first installed, there are roughly 20 types of task that you can schedule.
Now, let’s say you can’t access the terminal or simply you just rather execute it from a web interface. In this article, I will show you how to execute terminal commands from a simple web page.
For example, in the image below you see how we execute $zv on a webpage:
Sometimes, we need to copy part of the properties of an object into a different one. The simplest thing would be to do the following:
Set obj1.FirstName = obj2.FirstName
Set obj1.SecondName = obj2.SecondName
What happens if the object contains a large number of properties? or we just want to extract an important group of data, and complement the information in another object?
I'm sure it was mentioned in some thread. I just can't find it anymore.
There is some setting that allows exporting .mac,.int,.cls from IRIS in a way that it can be imported by Caché without fiddling in the generated XML files
When connecting to the database using a client-server architecture, for example using language binding, the machine name of the client can be obtained using the following code:
set client=##CLASS(%SYS.ProcessQuery).Open("P"_$j).ClientNodeName
Visual Studio Code (VS Code) is a free source code editor made by Microsoft for Windows, Linux, and macOS. It provides built-in support for JavaScript, TypeScript, and Node.js. You can add extensions to provide support for numerous other languages including ObjectScript.
The InterSystems extensions enable you to use VS Code to connect to an InterSystems IRIS server and develop code in ObjectScript. The Visual Studio Code Documentation is an excellent resource on VS Code, so it is a good idea to be familiar with it.
The question has come up several times and I saw mixed answers and no quick example
My personal preference is using CPIPE device as you get back exactly the output you will get at the command line interface of your OS . The tricky thing is to stop reading in time. The example just displays what you normally see in your console. it becomes useful if you look for things that you can't get from any $system.whatever()
The last days I've work with the great new feature: LOAD DATA With this post I would like to share my first experiences with you. The following points do not contain any order or other evaluation. These are only things that I noticed when using the LOAD DATA command. It should also be noted that these points are based on the IRIS Version 2021.2.0.617 which is a preview release. So it may be that my observations do not apply to newer IRIS versions.
When working at the Caché command prompt I sometimes want to run an operating system command on the server host. By prefixing my command line with ! or $ I can do this with ease. The following examples are from 2017.1 on Windows, but the feature is available on all versions and platforms:
Time travel is like visiting Paris. You can't just read the guide, you have to throw yourself into it. Eat the food, use the wrong verbs, get double the charges, and end up kissing complete strangers.
The Doctor
We are now going to travel through time, that is, we are going to see future and past dates and how to calculate them in different formats. The TARDIS doesn't wait, take the controls and hold on tight.
Just want to share an old but always relevant best practice on namespaces changing @Dmitry Maslennikov shared with me (again).
Consider method:
classmethod DoSomethingInSYS() as %Status
{
set sc=$$$OK
set ns=$namespace
zn "%SYS"
// try-catch in case there will be an error
try {
// do something, e.g. config change
}
catch {}
zn ns ; returning back to the namespace we came in the routine
return sc
}
And with new $namespace the method could be rewritten as:
classmethod DoSomethingInSYS() as %Status
{
set sc=$$$OK
new $namespace
set $namespace="%SYS"
// do something
return sc
}
So! The difference is that we don't need to change the namespace manually as it will be back automatically once we return the method.
and we don't need try-catch (at least for this purpose) too.
A common need for our customers is to configure both HealthShare HealthConnect and IRIS in high availability mode.
It's common for other integration engines on the market to be advertised as having "high availability" configurations, but that's not really true. In general, these solutions work with external databases and therefore, if these are not configured in high availability, when a database crash occurs or the connection to it is lost, the entire integration tool it becomes unusable.
(Possibly?) little-known fact: It's possible to use $ListBuild on the left hand side of the equals sign in a set command to extract multiple list values at once:
set $ListBuild(several,individual,variables) = list
By replies
Open Exchange app
.png)
