#ObjectScript

(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:

For example:

See for reference: http://docs.intersystems.com/cache20152/csp/docbook/DocBook.UI.Page.cls…

This feature was news to me - I use $ListBuild lists a lot but hadn't come across it until today.

Hello,

Here's the code:

Method isTestClass(className As %String) As %Boolean
{
	if (className = ..#UTCLASS) {
		return 1
	}
	
	#dim c as %Dictionary.ClassDefinition
	#dim status as %Status
		
	set c = ##class(%Dictionary.ClassDefinition).%OpenId(className,,.status)
	
	if ($$$ISERR(status)) {
		throw ##class(%Exception.StatusException).CreateFromStatus(status)
	}
	
	if ('c.SuperIsDefined()) {
		return 0
	}
	
	#dim children
	#dim len as %Integer
	#dim i as %Integer
	
	set children = $listFromString(c.Super, ",")
	set len = $listLength(children)
	
	for i = 1:1:len {
		if

Hello community!

Heretofore is announced a new project which aims at providing a usable library for both running unit tests and collecting code coverage information at the same time:

https://github.com/litesolutions/cache-utcov

I shamelessly admit that this is my first project written in ObjectScript; the only source file right now barely loads a %Studio.Project instance on a given namespace and fails ungracefully on failure (it HALTs; meh); and even on success it will not even list the items correctly... Well, that's part of the learning curve.

This project is of course not "innocent": for

Hi!

Please find all the source code Global Summit 2016 Sessions and Experiences in following GitHub repositories:

• Document Data Model experience.
• InterSystems iKnow experience.
• Internet of things experience.
• Global Summit Sessions - folders inside this repository consist sources (if any) for related session.

Codes are in UDL form which is native to Atelier IDE.

Here is small guide how you can check out this project into your Atelier:

Let's see how to load code directly from GitHub URI. 

Open Atelier. Go to File -> Import -> Git -> Clone URI

   2. Specify URL for repository and press Next

   3.

Hello,

For CachéQuality I'd love to be able to create issues when the programmer uses classes which are deprecated for this or that version of Caché... But short of reading all the changelogs of all versions, I can't really tell when a command appeared (for instance RETURN; I know now that it appeared in 2014.x, but it took me some time to realize that), or when a (set of) class(es) became deprecated (for instance %GlobalCharacterStream to be replaced with %Stream.GlobalCharacter -- I don't even know since which version this is true :/).

Is there an existing source which I am missing?

Hello,

I hereby announce the creation of an IRC channel dedicated to Caché development:

* network: FreeNode (connect to server: irc.freenode.net)

* channel: ##cos (yes, two hashes).

Topic is anything related to Caché development in spite of the name (and the fact that of Caché development I only really know about COS anyway), so sorry in advance for the restrictive channel name :)

Waiting for you here! (my nick is idletask on freenode)

Side note: that would be a good opportunity to launch a project of an IRC bot in COS...

Hello everyone,

I have discussed extensively with Andrew Cheshire, the author of the Atelier parser (which I'll be able to hack on and reuse for CachéQuality -- yay!), and while we were at it, we also discussed code coverage.

We ended up talking about the ZBREAK command and its /TRACE option.

It appears that combining this command and the unit test runner, we can indeed do code coverage (Andrew also told me about a way to map "back" routine lines to original lines in the source code).

So, according to the information above and this page, a sequence of possible command would be (provided we are

Hello community!

Two new rules have been implemented:

OS0061: unsafe namespace switch

This rule detects when the body of a method contains two or more of the following statements:

• set $namespace = something, or
• znspace something.

If this is the case, it then checks whether there is a new $namespace prior to those two declarations; if not, it raises a warning.

List of issues currently found here:

https://demo.cachequality.com/issues/search#severities=CRITICAL|rules=cachequality%3AOS0061|resolved=false

OS0062: confusing identifiers

This rule detects whether either of a method argument, or a local

Hello!

Link: https://demo.cachequality.com

In this presentation, developer oriented, we will cover this tool, how it works, how you can use it/administer it, etc. Duration 30 minutes.

The topics will include:

• a short presentation of Caché Quality and SonarQube (which this plugin uses),
• a demonstration of the rules and how to tailor them to your need.

Questions will be more than welcome! Hope to see you there!

And a big thanks to Evgeny Shvarov who made this possible!

When developing or maintaining Caché Objects applications, or even ones written in plain COS code, it's sometimes useful to investigate dependencies. Yuzinji is a tool that analyzes the Caché class dictionary plus the COS code within methods and routines, then feeds its results into Structure101g Studio.

By doing this it becomes easy to ask questions such as "Who uses this piece of code?", getting the information in a format that is easy to explore further.

This morning on the old Caché Google Group, someone posed the following question, which I've decided to answer here, because it's interesting!

Is there a way to iterate ClassMethod's params, and get param's names and values?

The first answer I can come up with is: it's not easy! In any method, you could try to write code like this (where methodName is the name of your method):

    set method = ##class(%Dictionary.MethodDefinition).IDKEYOpen($classname(), methodName)
    set args = method.FormalSpec
    for i=1:1:$length(args, ",") {
        set arg = $piece($piece(args, ",", i), ":", 1)

Looking at a property defined as follows:

Property SystemTime As %Library.TimeStamp [ SqlComputeCode = {Set {*}=$ZDATETIME($NOW(),3,1,0)}, SqlComputed ];

The documentation talks about using SqlComputed and SqlComputeCode with SqlComputeOnChange (specifying which events will trigger computation), and about using them with the Calculated keyword (so it's always computed). I don't see any specific explanation of the case above, though, when neither SqlComputeOnChange nor Calculated is specified.

From a bit of testing, it seems that the behavior is:

• Upon SQL insert or first %Save, if no value has

I've searched the ObjectScript reference for any instances of Upper, Lower or Case and the only thing is a case/switch statement.  In all the documentation I can only find SQL and Cache Basic references for things like UCASE.

So how do I do this in ObjectScript?

For instance, if (ucase(dtype)="G") { }