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#Mapping

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Mapping of classes, routines, globals to Namespaces.

When using standard SQL or the object layer in InterSystems IRIS, metadata consistency is usually maintained through built-in validation and type enforcement. However, legacy systems that bypass these layers—directly accessing globals—can introduce subtle and serious inconsistencies.

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Like many others probably find themselves, we were stuck doing live data mapping in our Interface Engine that we really didn't want to do, but had no good alternative choice. We want to only keep mappings for as long as possibly needed and then purge expired rows based upon a TTL value. We actually had 4 use cases for it ourselves before we built this. Use cases:

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Article
· Oct 17, 2024 2m read
ORU to MDM with large HL7 v2 messages.

I was working on a DTL but kept getting ERROR #5002... MAXSTRING errors. The problem was that most of the DTL GUI action steps only support the string data type when working with the segments. A %String has a limit of 3,641,144 characters and my OBX5.1 was 5,242,952 characters long as the example provided. Of course PACS admin stated ultra high quality up to and including 4K resolution files were needed, so we could not get the vendor to compress or reformat these files to compressed jpg or something similar.

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Let's say I have an InterSystems IRIS instance with 6 Namespaces:

  • Foo1
  • Foo2
  • Foo3
  • Foo4
  • Foo5
  • Bar

And the number of Foo# namespaces can increase at any time for a number of reasons. I need to ensure that they all have identical configuration globals stored in a DB called CONFIG, so I do the following in my configuration file:

[Map.%ALL]
Global_SYS=%DEFAULTDB
Global_SYS("CommonConfig")=CONFIG
Global_SYS("CommonOtherSettings")=CONFIG
Global_SourceControl=CONFIG

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Hi everyone.

Is there a sensible approach to having a lookup table in Namespace A, and then accessing this from Namespaces B, C, D (etc)?

I'm trying to avoid creating a Global mapping of the lookup table global (^Ens.LookupTable) as I fear that it would then link all other lookups in that global and lead to some unexpected behaviour, but would be open to trying something in this realm if it's the best option.

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In cache studio there are features, dialog boxes, that help map data from a global to class properties.
I have used %CacheSQLStorage quit a bit, or have in the past, to map globals to classes.

I haven't been able to find a similar feature in VisualStudio.
Do I need to upgrade to IRIS to be able to use VisualStudio to map global properties to classes?

Thanks for your time,
Richard

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The Art of Mapping Globals to Classes (4 of 3)

The forth in the trilogy, anyone a Hitchhikers Guide to the Galaxy fan?

If you are looking to breathe new life into an old MUMPS application follow these steps to map your globals to classes and expose all that beautiful data to Objects and SQL.

If the above does not sound familiar to you please start at the beginning with the following:

The Art of Mapping Globals to Classes (1 of 3)

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I found the thread that discusses object mapping, in particular mapping a common global among more than one namespace. The example that is given is a simple one when it's ^global(sub1, ^global(sub2, etc. However I'm having trouble getting this to compile/work when the global has a fixed subscript amongst variable ones.

I have this global in namespaces LAB and ARK in the following format:

^CB(1,sub1)=....

^CB(1,sub2)=...

^CB(1,sub3)=...

Here is what I have for this. In it's current state it throws tons of errors:

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Question
· Jun 1, 2017
Casting JSON

I'm doing a REST service. A method has as body parameter a JSON corresponding to a class A.

In my production I have class A so that I retrieve the parameters using a dynamic object, such that:

Set body = ##class(%DynamicObject).%FromJSON(%request.Content)
Set myObjectA = ##class(A).%New()
Set myObjectA.Id = body.Id
Set myObjectA.Name = body.Name
Set myObjectA.Date = body.Date
Set myObjectA.Salary = body.Salary

I would like to know if I can avoid doing the manual mapping, doing a casting, since I am sure that FromJSON will return a class A. Something like this:

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Hi,

Using Interoperability, I can't figure out how to create separate XML's files from a CSV-file using the GUI-features Record Maps/Complex Record Mapper -> Data Transformations. I'm familiar with reading/writing the files using File Service/Operation, but don't understand the processing-steps.
The preferred method by my colleagues is to do this without any Objectscript or Embedded Python coding, but if this can only be done by some coding that's fine as well.

See example below.
Any help is appreciated!

Kind regards,
Ties Voskamp

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I need to split existing tables from database and put some parts of them into a new namespace. I dont know where to start, other than the installer.cls file. If you can provide clear instructions i would be greatful.

Example:

I have NAMESPACE=NEWTEST and DB

The i need to take TABLES from that DB pull specific data from them and bind it to NEWTEST

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Suppose you have developed your own app with InterSystems technologies stack and now want to perform multiple deployments on the customers' side. During the development process you've composed a detailed installation guide for your application, because you need to not only import classes, but also fine-tune the environment according to your needs.
To address this specific task, InterSystems has created a special tool called %Installer. Read on to find out how to use it.

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您好，我想问一下为什么我无法通过Iris中的内置转换模板将从HAPI-FHIR服务器下载的患者资源转换为SDA格式。它总是表明缺少某个默认值，或者这就是我们需要更改格式吗？我想问一下我们如何快速创建自己的映射，以及如何通过json将所需的数据转换为sda并将其存储在iris中，然后我们可以通过齐柏林飞艇进行调用，非常感谢您解决我的问题问题

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