NewBie's Corner Session 27 Traversing A Global with $Order Part 1

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

Traversing A Global

Perhaps the most difficult concept in Caché/MUMPS is its Global Structure. This session and several that follow it deals with the Global Structure. However, just presenting the material will not guarantee your understanding of it. You must experiment with the data and concepts that are presented.

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NewBie's Corner Session 28 Various Methods to Traverse a Global

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

Judging from the number of responses to Session 27 Traversing A Global, developers are passionate about their methods. I am not here to judge the merit of the various methods.

Over the next few pages I will demonstrate a number of methods to Traverse a Global. If you don't already have a favorite they may help you pick one.

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Question
· Sep 28, 2016
wsHttpBinding with Cache

Hi all,

This is a real long shot, but does anyone have experience integrating MS wsHttpBinding with a Cache application?

Link

I ask because my project had some initial design discussions for new web service communication and this specification was mentioned.

Thanks.

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Hi, Community!

Here is the digest of Articles and Questions published on InterSystems Developer Community in September 2016.

Most viewed

Mirroring 101: a brief guide and FAQ - 238

NewBie's Corner Session 27 Traversing A Global with $Order Part 1 - 214

Cache for Raspberry Pi? - 209

Free Text Search: The Way To Search Your Text Fields That SQL Developers Are Hiding From You!* - 199

REST in Pieces - 196

User authentication using Arduino with RFID - 146

Windows 7 performs shutdown too fast for Cache to close and so it gets forced down - 143

Cache or Caché? - 141

NewBie's Corner Session 28 Various Methods to Traverse a Global - 134

Cache Certification - 128

Most voted

Ensemble and file outbound adapters - a small hint - 11

Free Text Search: The Way To Search Your Text Fields That SQL Developers Are Hiding From You!* - 9

Windows write caching - 9

Advanced URL mapping for REST - 6

Windows 7 performs shutdown too fast for Cache to close and so it gets forced down - 6

Featured InterSystems Video: OAuth 2.0 Overview - 6

The Art of Mapping Globals to Classes (2 of 3) - 5

Running HealthShare XSLTs from Terminal - 5

Cache for Raspberry Pi? - 5

Cache or Caché? - 5

Most commented

NewBie's Corner Session 27 Traversing A Global with $Order Part 1 - 16

Cache for Raspberry Pi? - 14

question on ExternalFreeze on windows platform -- - 14

Cache or Caché? - 12

Mirroring 101: a brief guide and FAQ - 10

Windows 7 performs shutdown too fast for Cache to close and so it gets forced down - 9

Multiple namespaces in web application - 8

cleaning up CSP sessions (aka where/who/what is the %CSP.Daemon?) - 8

NewBie's Corner Session 28 Various Methods to Traverse a Global - 8

Free Text Search: The Way To Search Your Text Fields That SQL Developers Are Hiding From You!* - 7

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Question
· Sep 9, 2016
Trimming...

Hello, guys.

I found one interesting moment in Cache Object Script. It doesn't have(or at least I didn't find) trimming function. By trimming I mean if a string has some whitespaces/tabs/carriage returns from very beginning or/and from very right, this function removes them.

I have found several workaround ways.

1. Using Cache Basic

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Article
· Sep 30, 2016 1m read
ECP Magic

I saw someone recently refer to ECP as magic. It certainly seems so, and there is a lot of very clever engineering to make it work. But the following sequence of diagrams is a simple view of how data is retrieved and used across a distributed architecture.

For more more on ECP including capacity planning follow this link: Data Platforms and Performance - Part 7 ECP for performance, scalability and availability

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It appears latest version of field test supports Rules. What does support of Ensemble rules in Atelier mean for Ensemble users? Does it mean compilation and development can now be done in new Studio? If yes, how indentation and aliment work with Atelier?

Thanks

2016.2.0.726.0AtelierCDS2785Support Ensemble Business Rules in Atelier api
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Checking if Directory or File Exists:

Outlined below is an example of how to check if a directory exists:

Set directoryName="c:\temp\nosuchdir"

/* Check for existence of a directory - Return Value:  0 - directory does not exist;  1 - directory does exist  */

Set directoryExists=##class(%File).DirectoryExists(directoryName)

If ('directoryExists)  // do the processing for when a directory does not exist


Outlined below is an example of how to check if a file exists:

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Hi all,

We're creating a series of RESTful APIs that output data from a Cache database (made up of global storage that we've mapped to classes). I'm running into some problems with object-to-JSON conversions when relationships are involved. Eg:

ParentClass has children relationship to ChildClass

ChildClass has parent relationship to ParentClass

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Hi All

I have a question on working with dev and prod environments.

After project is ready and signed, I usually migrate outcome to production using the export tool from the studio.

For changes/adding to existing projects, I exclude the production class (as it has some different values differing the dev from the live) and I add the differences manually afterwards.

My questions on migrating are:

Does anyone has (to share) his/her best practice steps on "migrating dev to prod"?

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Hi ,
1. I will ready to write a cache Developer Certification Level1.
2. How to prepare this exam and any mock test available.
3. Where place to I will write exam . (Online as I will write a exam in my home place ).
4. Will i Complete and pass 1st level , you will provide certificate.
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I need to do an UPDATE via SQL and I would like the statement to return the `ID` column of each row that is updated. MS SQL has an "OUTPUT" statement, but I don't see anything similar in Cache. Is there a way to do this?

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Cross-origin Resource Sharing (CORS) is one of the basic security features built into browsers. CORS controls accessing resources from a HTML page in domains other than the original domain. It is particularly important for AJAX calls. Since RESTful services can be used as data provider to any AJAX call, you have to be able to control cross-origin access. By default services are not allowed to do CORS. You are going to learn how to enable it for Ensemble RESTful services.

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NewBie's Corner Session 29 Documentation on the Caché/MUMPS Global Structure

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

This post contains several links to very good documentation of the Caché Globals Structure.

Like I said, "Perhaps the most difficult concept in Caché/MUMPS is its Global Structure."

universalNoSQL.pdf - http://mgateway.com/docs/universalNoSQL.pdf

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We're developing Ensemble PoC and one day our frontend developer (who doesn't have Ensemble production running) said that Populate just doesn't cut it and he needs to see the real data. He needed only one object, but the problem was - it's a big object. Still, I checked ids of everything related and wrote this command (parts omitted, but you get the idea):

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