NewBie's Corner Session 2 Variables Set and Write commands

Welcome to NewBie's Corner, a weekly or biweekly post covering basic Caché Material.

Session 2 – Click on the Caché Cube in your system tray and select Terminal to try out the commands.

Variables

Like other computer programming languages, Caché uses Variables and the values they represent to control programming. Variables are elements that represent data values. Manipulating and interrogating variables is at the root of programming.

Based on a great sample and workshop built by @Luis Angel Pérez Ramos (see related articles and related Open Exchange app), which included a local InterSystems IRIS for Health container (and desired setup), this sample presented here, adapted the workshop for using the InterSystems Cloud FHIR Server, and it's related setup.

Lately my group has been seeing issues when signing in through the Management Portal or VS Code we are getting "Service Unavailable" errors returned to us. We recently migrated away from using the PWS to using Apache/InterSystems Web Gateway and using LDAP instead of Delegated Authentication.

Hello developers,

In this article, I'll show you how to run code at compile time with ObjectScript macros.

Here's a use case that recently led me to use this feature:

As part of a medical application developed for more than 20 years, we have a large number of parameters. Although we have procedures for documenting these settings, it can be helpful to have a quick view of which settings are actually used by the application code.

I've experienced this problem several times recently. I go to a production in my development instance and click on the (+) to add a new service. A pop-up appears with the message "An error occurred with the CSP application and has been logged to system error log (^ERRORand nothing else. Examining ^ERRORS is of no help. There's a lot of gibberish there that isn't informative in the least.

I can add processes and operations just fine.

Hi Community,

I am trying to access another process's content of objects like %request and %session. I am using the class/method "%SYS.ProcessQuery:VariableByPid". Does anyone knows how to get the value of the properties like %request.Data("ID",1) from one process that is running on the DB server?

Example of what I am trying to do:

There are couple of options to do this.

1. You can extend your class &JSON.Adaptor, it will do it for you with inbuilt logicaldtodisplay methods

2. Create another request class and do your transformations

3. Before calling the json convert to stream methods, transform the object's field with a ZDT.

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I have an extremely simple example where there is a class with 3 properties

Hi Developers!

Recently we discussed the naming convention on packages we deploy and even made some choices.

Here I want to have a conversation on the naming convention for unit tests.

Of course, we wish every good library has unit tests. Here is the documentation and some good articles(one, two, three) regarding it on the Developer Community.

Let's decide on the naming of UnitTests packages?

The suggestion is that unit test classes will all start with the UnitTest package name.

E.g. if your library's class name is:

johndoe.lib.class

The related unit test class will be:

UnitTest.johndoe.lib.class

What about folders?

The suggestion is that unit test classes will live separately from source classes, e.g. in /tests directory.

Here is the example of a repository with unit tests that are named and placed according to the proposal.

What do you think?

I've recently encountered a HS Caché that won't start informing that Collation 30 is not available, but I have not found an easy way of knowing what collation is 30.

I've found that the following command returns the ones from the current locale, but not from all locales:

Set Rset = ##class(%ResultSet).%New("%Library.Collate:CollationList")

d Rset.Execute()

While (Rset.Next()) {zw Rset.Number_": "_Rset.Name}

Thank you

Let's say we have a class

AbcRequest extends Ens.Request, PropertiesBaseAbstractClass(has all my properties common to all request)

Prop1

Prop2 and so on

Now in my Business Operation

I want to make a json dynamically from this request.

Yes obviously I can do is

Set requestDefinition = ##class(%Library.CompiledClass).%OpenId("MyCreateRequest")
Set JsonObject = ##class(%DynamicObject).%New()

Hi, Community!

Please welcome a new session recording from Global Summit 2017:

Application Performance Management

https://www.youtube.com/embed/IINsLJ2g9E8
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I have a main page in .NET where I call a Dashboard created in DeepSee like this:

<iframe src="../..zen?DASHBOARD=NameofDashboardKpi1.dashboard&EMBED=1&CacheUserName=&CachePassword="

to display the Dashboard in the .NEt page.

My problem is that connection to every Dashboard takes a while, so performance is low.

Any suggestion?

Recently I have encounter an issue to get the columns out from a query without execute it.

For example:

I have a Query looks like below. How can I get the 'col1,col2,col3,col4' or the text of the query("select col1,col2,col3,col4 from mytable") back?

I have a class which, in the previous instance, was able to extract metadata field names and data from a text file, and load this information into a domain. I am trying to run this in the field test instance, but it is not loading the metadata - only the field names. I am not getting an error, but the data is not loaded.

The few changes I made to the original class:

Previously, this class also ran iTables. I commented all that code out.

To create the domain, I replaced the line: