ObjectScript

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Hi guys!

Was coding today with InterSystems IRIS in a docker container and decided to share with you the commands you may find useful in everyday coding.

# docker-compose build

command to build a container. Remember, it is useful if you have dockerfile in the repo.

if the build is successful call the following to launch it:

# docker-compose up -d

Find IRIS management portal on:

localhost:port/csp/sys/%25CSP.Portal.Home.zen?$NAMESPACE=%25SYS

where the port is what you set in docker-compose.yml - 52775 in this case.

Run the following if you want to launch a terminal session inside IRIS container:

# docker-compose iris iris session iris

USER>

And run the following to shut down the container:

# docker-compose down

Troubleshooting

Last comment 24 July 2019
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Hi Everyone!

You're very welcome to watch a new video on InterSystems Developers YouTube, recorded by @Evgeny Shvarov in the new format called "Coding Talks":

GitHub Flow with InterSystems IRIS: Edit with VSCode, Test with Docker, Commit, Push, Pull Request

 

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Hello!

This article is a small overview of a tool that helps to understand classes and their structure inside the InterSystems products: from IRIS to Caché, Ensemble, HealthShare.

In short, it visualizes a class or an entire package, shows the relations between classes and provides all the possible information to developers and team leads without making them go to Studio and examine the code there.

If you are learning InterSystems products, reviewing projects a lot or just interested in something new in InterSystems Technology solutions — you are more than welcome to read the overview of ObjectScript Class Explorer!

Last comment 19 July 2019
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Hi Everyone!

You're very welcome to watch a new video on InterSystems Developers YouTube, recorded by @Sourabh Sethi  in a new format called "Coding Talks":

Locking in InterSystems ObjectScript

 

Last comment 17 July 2019
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Hi, I am trying to transform a message to meet a third party specification, and would like to know if you can advice me on how to separate a single OBX segment into several segments based on a '.'

I would like to separate the segment where the . [marked in red] is into another OBX segment. So the next segment would be:

Last answer 16 July 2019 Last comment 16 July 2019
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All,

I'm using Cache 2014.1 in an openVMS environment.

If I have multiple RMS files to clean up, for example.

!DIR MEMBER_EXTRACT.*;*

MEMBER_EXTRACT.CSV;2                    MEMBER_EXTRACT.CSV;1
MEMBER_EXTRACT.PROC;1                   MEMBER_EXTRACT.TXT;3
MEMBER_EXTRACT.TXT;2                    MEMBER_EXTRACT.TXT;1

S FILE="MEMBER_EXTRACT.*;*"

Do ##class(%Library.File).ComplexDelete(FILE)

Last answer 12 July 2019 Last comment 12 July 2019
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The topic of for/while loop performance in Caché ObjectScript came up in discussion recently, and I'd like to share some thoughts/best practices with the rest of the community. While this is a basic topic in itself, it's easy to overlook the performance implications of otherwise-reasonable approaches.

Last comment 12 July 2019
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Way back when during our Siemens LCR days we had to limit the number of characters in OBX.5 to a length of 75. That was back when we had eGate.

Now I need to do the reversal of that and take loop through a string length and split the string up into multiple OBX or NTE based on a certain length. In reading documentation $EXTRACT can do this if you know the exact length, but in this case we don't. 

So how would one loop through a string and say every 75 characters create a new OBX or NTE segment?

Thanks

Scott

Last answer 10 July 2019 Last comment 9 July 2019
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Hey Intersystems-Developer,

 

I have already used that and know its possible, but can't find it anymore :(

 

I need dynamic access on proxy objects. For example:

set key = "lastName"

set name = obj.name

set lastName = obj.key <- Not possible 

set lastName = obj.GetAt(key) <- Not possible

 

How can I get access to that object with my dynamic variable "key" ?

 

Best regards. 

Last answer 9 July 2019 Last comment 9 July 2019
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Hi guys!

As you know there are two (at least) ways to get the stored value of the property of InterSystems IRIS class if you know the ID of an instance (or a record).

1. Get it by as a property of an instance with "Object access":

ClassMethod GetPropertyForID(stId As %Integer) As %String

{

set obj=..%OpenId(stId)

return obj.StringData

}

2. Get it as a value of a column of the record with "SQL access":

Last answer 29 June 2019 Last comment 6 July 2019
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It’s often useful to make changes inside the current transaction, that would not be rolled-back if transaction is rolled-back. For example to do some logging.

This can be achieved by using global that is mapped to temporary database -- IRISTEMP. All globals that start with ^IRIS.Temp* are mapped to IRISTEMP by default. Problem with such approach is that IRISTEMP is cleaned on InterSystems IRIS restart, so this log is lost.

What else you can do is -- suspend transaction temporarily, do the logging, and then resume the same transaction.

Last comment 2 July 2019
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Hi Dev Community,

My team is currently working on a project where we need to post pdf documents to a 3rd party REST API.

The API specifies a field in the JSON request message to contain the 'physical content' of the file as an array of bytes, example of the JSON request as follows - data truncated for readability purposes:

Last answer 1 July 2019 Last comment 17 June 2019
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Hello,

Working on to learn very basic CUSTOM Business Service which sends to a EnsLib.File.PassthroughOperation.

But operation is not writing to File and erroring out (No Stream contained in StreamContainer Request")'.

How do convert the object to STREAM and wrap in the StreamContainer so the operation does not error and write to a file.

Thanks.

Persistent Class

Last answer 26 June 2019 Last comment 28 June 2019
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Hi,

We have a function that takes two parameters, the second one is for output value:

MyFunc(Param1,Param2)

 S Param2="it's all good"

Q 1

 

How can we detect if the caller called the function with one, or two arguments?

Meaning,  how to distinguish this call:

S Result=$$MyFunc(1)

from this call:

S Result=$$MyFunc(1,.OutVal)

 

Thanks!

Nael

Last answer 27 June 2019 Last comment 27 June 2019
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Hello,

Can anyone please provide me with a guide I can follow to create an entry in Cache's SSL/TLS configuration that would allow me to "speak" to an website via the Post method using SSL.

I need to simulate functionality that is provided by my browser but from with Cache.

The topics I have are:

1. From where do I source the certificate that will be used for this process?

2. What processing must I do on it to make it acceptable for Cache's SSL/TLS

3. What settings are required when filling the the form

 

Last answer 18 June 2019 Last comment 19 June 2019
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Forgive my lack of understanding, but I am working on a vendor created Cache database and the indexes specified in the classes for ODBC connections are not working. A few of them are created, but of the 50+ classes we have, only a handful of them are created when the class is compiled, yet no errors occur.

Example 1:

 

Example 2:

 

Last answer 31 May 2019 Last comment 18 June 2019
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1.About this article

Just like Caché pattern matching, Regular Expressions can be used in Caché to identify patterns in text data – only with a much higher expressive power. This article provides a brief introduction into Regular Expressions and what you can do with it in Caché. The information provided herein is based on various sources, most notably the book “Mastering Regular Expressions” by Jeffrey Friedl and of course the Caché online documentation. The article is not intended to discuss all the possibilities and details of regular expressions. Please refer to the information sources listed in chapter 5 if you would like to learn more. If you prefer to read off-line you can also download the PDF version of this article.

Last comment 17 June 2019
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Noticed some unexpected behavior when using $ZTH

Resultant values less than 1 are treated as strings and values >=1 are numbers.  Causing heartburn in $Query / $Next / $Order loops. Is there a setting somewhere that can change this?

Example:

// Parse the time out of a text string whose format is YYYYMMDDHHMMSSsssssssss   (lower case s = fractional parts)

Set MsgDT = "20180405000000001005933"
Set MsgDTH = $ZTH(($E(MsgDT,9,10)_":"_$E(MsgDT,11,12)_":"_$E(MsgDT,13,14)_"."_$E(MsgDT,15,23)),1)

//Do it again, but add a sec to the time string 

Last answer 15 June 2019 Last comment 17 June 2019
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I am trying to pull the word count from Microsoft Word document into Cache. Is there anyway to get the values of the extended file properties without opening the word document?  If I right click on a word document (Word does not need to be installed) I can see the additional properties that I want to reference however don't know how to access these without calling out to VBA or poweshell.

 

 

Last answer 14 June 2019 Last comment 17 June 2019
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Hey, developers, I have great news for you. A few days ago, GitHub was updated with the latest version of linguist project, which is being used to recognize source code types in repositories. It helps to determine which programming language had been used in every file of the repository. Repository statistics section shows the results of this module work.

 

Also  you can search across all available GitHub repositories for any chosen language. 

Last comment 12 June 2019
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