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Article

Jenna Poindexter · Nov 16, 2015 1m read

Attached is an example of a web service client that can be used to do a lookup against the CMS NPPES database to validate and retrieve information about a given National Provider Identification (NPI).

#Code Snippet #System Administration #Caché

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Article

Sylvain Guilbaud · Feb 24, 2016 1m read

Script sample for running an external Caché / Ensemble backup on Windows (using ##Class(Backup.General).ExternalFreeze() / ExternalThaw())

C:\data\backup.bat :

C:\InterSystems\Ensemble\bin\cache -s"C:\InterSystems\Ensemble\Mgr" -U%%SYS ##Class(Backup.General).ExternalFreeze() <C:\data\login.scr

echo %ERRORLEVEL%

rem note that we need to check errorlevel from highest to lowest here....

if errorlevel 5 goto OK

#Caché #Code Snippet #System Administration #Backup

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Article

Alberto Fuentes · Feb 19, 2016 3m read

Object Generators: a homemade RuleEngine

The attached file contains an example of code generation using ObjectGenerators which builds a very simple homemade RuleEngine.

Code generation is an excellent way of increasing performance moving run-time calculations to compile-time.

We could generate code creating routines or implemeting methods using ObjectGenerators. In this example we are using ObjectGenerators.

Update: Rule Engine is now on GitHub https://github.com/intersystems-ib/cache-iat-ruleengine

#Code Snippet #Compiler #Object Data Model #Caché

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Question

Scott Beeson · Feb 16, 2016

Concatenate columns in results with GROUP BY?

Here is my original query:

SELECT EventType, InitiatedAt, COUNT(*) as cnt
FROM HS_IHE_ATNA_Repository.Aggregation
WHERE EventType = 'LOGIN'
AND LocalDateTime > '2016-02-16 11:00:00'
GROUP BY EventType, InitiatedAt

This gives me data like this:

#Code Snippet #Databases #SQL #Caché

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Question

Scott Beeson · Feb 11, 2016

Ens.Rule.FunctionSet without parameter?

I'm writing some custom functions for use in a routing rule. I have a few that are working, but right now I'm trying to use one that has no parameters. Typically this would be a sub instead of a function, but I'm not familiar enough with Cache to know what I need to do here.

Here is the code:

#Change Management #Perforce #Code Snippet #Ensemble

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Scott Beeson · Feb 8, 2016

Variable scope in .mac routine?

Given the following code:

#Code Snippet #Caché

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Scott Beeson · Jan 21, 2016

[SOLVED (KIND OF)] Missing something obvious trying to do a lookup in a method

So calling this lookup manually from the console works as expected:

PHR>set key = "WMMC_IMM"
PHR>w ##class(Ens.Util.FunctionSet).Lookup("BlockFeed",key)
1

However, calling it from a method with some concatination to build the key is giving me problems:

#Beginner #Code Snippet #Ensemble #Unstructured Data

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Article

Brendan Bannon · Nov 9, 2015 1m read

Cache SQL Storage Mapping

The attached zip file contains a bunch of examples of Cache SQL Storage mappings that I have done over the years.

If you have existing globals and want to expose them via Objects or SQL you need to setup Cache SQL Storage mapping. If you do not see an example that helps with your case send me an example and I can help you out.

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Article

Daniel Kutac · Nov 9, 2015 3m read

Tipy a Triky s Caché

Tip dvacátý šestý: objekty a concurrency 2 - swizzling

Když tento seriál před několika lety začínal, byl jeho první díl věnován zajištění izolace instance objektů pro exkluzivní přístup a popisu příslušných API funkcí. Nedávno se mi ale stalo, že mě tento díl dostihl. Jeden ze zákazníků začal mít problémy v aplikaci, přestože důsledně používal exkluzivní zámky pro editování instancí svých objektů.

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