Compiler

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Class Queries in InterSystems Caché is a useful tool that separates SQL queries from Caché Object Script code. Basically, it works like this: suppose that you want to use the same SQL query with different arguments in several different places.In this case you can avoid code duplication by declaring the query body as a class query and then calling this query by name. This approach is also convenient for custom queries, in which the task of obtaining the next row is defined by a developer. Sounds interesting? Then read on!

Last comment 2 days ago
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When dealing with a support issue of one of our Deltanji source control sites this week I learned that if you're using InterSystems versions earlier than 2018.1 on Unix-type platforms it's possible that a class you export in UDL format will subsequently fail to import. So I'm posting this information here in case it helps other folk.

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As a developer, you have probably spent at least some time writing repetetive code. You may have even found yourself wishing you could generate the code programmatically. If this sounds familiar, this article is for you!

We'll start with an example. Note: the following examples use the %DynamicObject interface, which requires Caché 2016.2 or later. If you are unfamiliar with this class, check out the documentation here: Using JSON in Caché. It's really cool!

Last comment 26 July 2019
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First, my $ZVERSION:

Cache for OpenVMS/ALPHA V7.x (Alpha) 2010.1.6 (Build 952_2 + Adhoc 17754) 3-JAN-2018 14:32:54.07

Second, my issue:

I believe my current villain is “incremental compiling.” I was able to compare early compile output with later compile output:

Compilation started on 04/10/2019 10:46:32 with qualifiers 'cuk'
Compiling class UnitTests.Task3496 incremental compile detected
Compiling routine UnitTests.Task3496.2
Compilation finished successfully in 0.800s.

Last answer 13 May 2019 Last comment 14 May 2019
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Hello everyone,

 

I'm trying to migrate the IDE for programming in COS, we normally use the Studio, but we want to use a more modern IDE. Our team has knowledge with Visual Studio plataform, but we couldn't configurate the compiler and terminal, I installed the extension InterSystems ObjectScript and tried to configurate to connect with my local machine, unfortunately the connection don't sucessed.

Someone has material for how i can connect and compile? Some material i saw show how to use the compiler, but not how can i do the configuration.

 

Last answer 3 April 2019 Last comment 8 April 2019
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I have just imported our Ensemble project (not a really big one, like two man-years) into my MacBook Air  Ensemble 2016.3 instance to test many things (document model, etc.), Atelier among the others.

The "Production view" is not here, and I miss it.

The opening of Diagram Editor for BP is pretty hidden. I would even like having a switch, which would default to the Diagram Editor. 

Anytime I click on the Open Diagram Editor, it waits for a while, ten produces an error and only then I can see the diagram.

Last answer 6 December 2018
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Using our cool new debugging extension for Visual Studio Code I'm trying to debug a CreateProjection method of a class, but when I compile it the work apparently gets done in one of the worker jobs, so my breakpoint never triggers.

Is there a compiler flag or qualifier to force the compilation to be done in-process rather than getting handed off to a worker job?

Last answer 2 October 2018 Last comment 4 October 2018
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Hi!

We need to use a bash script under Linux in order to export a namespace's clases (*.cls), project (*.prj), *.inc and all related stuff (except generated and mapped clases). All these elements must be stored on a XML file.

We need to use a bash script under Linux to import and compile previously exported XML file (from Studio, Management Portal, or Export Script) .

Can anyone help us to develop them?
Thanks in advance!

Last answer 23 December 2015 Last comment 29 December 2015
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I am using &html<> to output some CSS to my page (which is a class-based and not a tag-based page), and the selectors contain the '>' character which the compiler chokes on.  How can I escape the '>' so it still displays as such in the web page source but doesn't trip up the compiler?

This is for 2012.2 btw.

Last answer 20 November 2015 Last comment 20 November 2015
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When I try to compile through Atelier (Compile Project), I noticed that in compilation with error it returns this message 'Failed to read /api/atelier/v1/ ...':

No additional Atelier files to synchronize.
Compile failed: Failed to read /api/atelier/v1/ERP/action/compile?flags=ck
Compile failed: Failed to read /api/atelier/v1/ERP/action/compile?flags=ck
Compile failed: Failed to read /api/atelier/v1/ERP/action/compile?flags=ck
Compile failed: Failed to read /api/atelier/v1/ERP/action/compile?flags=ck

Last comment 24 July 2018
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Hi community.

I want to create a custom list inheriting %ListOfDatatypes in order to implement some methods like Map, Filter, ForEach, but I have some questions.
Just to mention, I have already read the topic about DeclarativeCOS.

When I define a property like following, caché uses %Collection.ListOfDT or %Collection.ListOfObj, as it's shown in the documentation

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Is there a way to enumerate the compilation status of a package?    

currently after deployment we are doing something like this to validate a successful load and compile of classes:

successful_compilation_count=`grep -a "Compilation finished successfully" output.log | wc -l`
successful_load_count=`grep -a "Load finished successfully" output.log | wc -l`

is there a method to do this where it is a little bit more elegant/dynamic without having to maintain counts for comparison ?

Last answer 13 March 2018 Last comment 15 March 2018
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In part of this post in 2016 @Eduard Lebedyuk asked if anyone knew what is meant by an "expanded class", as referred to in the text that appears when we run the ShowQualifiers classmethod of %SYSTEM.OBJ thus:

SAMPLES>DO $system.OBJ.ShowQualifiers()
...
            Name: /checkuptodate
    Description: Skip classes or expanded classes that are up-to-date.

Last answer 30 January 2018 Last comment 30 January 2018
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I am currently trying to add a condition to a routing rule that uses the %Source property of a routing rule.  Unfortunately I am getting compile errors when I use the "%", and if I get PROPERTY DOES NOT EXIST if I try and use any of field. I have tried referencing the messages as "Message." , "Record.",  "FullRecordMapClassName." , "Document." . Does anyone know how to reference the properties of a record map in a routing rule, or if it is even possible? Thanks!

Last answer 13 January 2018 Last comment 24 January 2018
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"Help me, Obi Wan Kenobi"?

I’ve hit the wall. I’m a one person shop who wants to start developing Cache on a mac using Eclipse/Atelier, after using Studio for the last 5 years. I’ve installed the 1.1 beta plugin, watched 6 or 7 videos from the September conference, tried several times to work through the cheat sheets, only to have connection issues or compilation issues, so at this point, I’m feeling very frustrated. The videos were interesting, but generally didn’t work as tutorials for fundamental programming operations, for me.

Last answer 13 November 2017 Last comment 14 November 2017
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hi-

Can someone give me an example of how to JOB a class method that requires an array of values to be passed to it by reference.  

This is what I tried, but am getting compile errors because of the .params

job ##class(%SYSTEM.OBJ.FM2Class).All(.params)::5

Any thoughts on how to accomplish this, the simplest way.  I would like to avoid writing all of this to some global and having to write some wrapper to pick it up and then call the class method, which I certainly could do.  but is this the only way to do it?

Last answer 2 October 2017 Last comment 2 October 2017
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The definitions of these two compiler keywords looks very similar to me.

Is there any difference between these two keywords ?

When I declare a parent class as Abstract, its child class could be compiled successfully.

However, when I  declare a parent class as NoExtent, some compile errors about storage references get pop up for its child classes.

Thanks.

Last answer 27 September 2017
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I'm looking at adding multilingual support to a couple of open source projects I'm working on. The solutions are already developed in CSP so I am not looking for alternative approaches.

I'm wondering what would be the best approach for CSP and separate JavaScript files.

Initially I was wondering if I should bake the default system language text at compile time, or provide the end user with a language selection option at run time.

I came across $$$TEXT reading the docs...

Last answer 11 May 2017 Last comment 12 September 2017
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I am trying to import the SalesForce Enterprise WSDL in InterSystems Ensemble Studio using the SOAP Add-In. However, when I do so I receive a class dependency loop, Error #5316 during compilation. The WSDL is the standard WSDL provided with SalesForce and works fine in SoapUI. In the SalesForce WSDL it is allowed for an object A to include an object B as an element, while at the same time object B is allowed object A as an element. I think this is what causes the class dependency loop for InterSystems. Does anyone has any suggestion how I can circumvent this error?

Last answer 15 August 2017 Last comment 15 August 2017
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In this article I would like to tell you about macros in InterSystems Caché. A macro is a symbolic name that is replaced with a set of instructions during compilation. A macro can “unfold” in various instruction sets each time it is called, depending on the parameters passed to it and activated scenarios. This can be both static code and the result of ObjectScript execution. Let's take a look at how you can use them in your application.

Last comment 24 July 2017
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Hi all,

 

I was wondering if there is any way to trigger the compilation of a class based on the compilation of another (unrelated) class. For example:

Class 1 = test.class

Class 2 = test.class.type.one

Class 3 = test.class.type.two

Every time class 2 or class 3 is compiled in Studio I would like to have class 1 automatically compiled as well.

 

The reason I need this is because class 1 has a method with CodeMode set to objectgenerator which generates some code based on what is found in classes 2 and 3.

Last answer 18 July 2017 Last comment 19 July 2017
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Hi everyone

Is there any way to change a class definition (especifically a query definition during the compilation time)?
The idea is: 
    I have an abstract class with a parameter where I will define the ROWSPEC of a query and some methods to populate e temporary table
The implementation class will override the parameter, specifying the ROWSPEC of this implementation, and the methods will populate the rows in the same format as the ROWSPEC.

Last answer 14 July 2017 Last comment 17 July 2017
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