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#Caché

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InterSystems Caché is a multi-model DBMS and application server. See more details here.

Documentation.

Question
· Jun 22, 2017
Hash values of columns

I try to find a function, which generates hash values of columns. In MS SQL Server I can use

select hashbytes('sha2_256', my_column) ...

to create hash values of my_column. Is it possible to use such things in Caché?

Thank you
André

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Question
· Jul 16, 2017
How to index a class

Hi

I have two persistent classes defined. Lets call it Parent and Child.

Child class is one of the property of Parent Class.

I would like to define a index on Child class.

So what is the default behaviour I defined a index on a non simple data type member?

Any possibility that I could customized the behaviour ? For example. Child class has three properties.

Could I configure the index to index any combinations of these three properties?

Thanks for your help.

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Hi Everyone,

I am trying to reference a field, however, in our production environment, it can be found in the first second or third iteration. My code was only qualifying on the first iteration. I have been attempting to include all iterations, but I have come up short...below is a snippet of what I am attempting to use. My original code simply had GetValueAt("PID:13.4") but this only referenced the first iteration. Thanks for any thoughts!

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Question
· May 17, 2018
cannot connect to Caché

hi

I cannot connect to Caché sometimes, the error message is

[Cache JDBC] Communication link failure: Communication error: Connection reset

and I cannot access the management portal

so I plan to restart Caché with "ccontrol stop cache"， it prompted "unable to get access to pid table"

what's the problem?

thanks!

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I am doing an implementation of a SAML 2.0 SingleSignOn protocol integration which requires a signed message with the signature element in the body of the SOAP message, not the header as is default SOAP security handling. Any suggestions for how to do this would be greatly appreciated. When it is passed in the header, it is not processed by our partner and we just get a "Signature Required" response.

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Hi everyone

I am new to the bpl diagram. I would like to add an if statement that checks whatever an object is null or not.

I guess that: condition='response.Content != null' would not be ok...

<if name='CheckObj' condition='response.Content != null' xpos='200' ypos='1700' xend='277' yend='2197' >

I tried to search for this information in the documentation but I didn't find any help.

Do you have any suggestions?

Thanks and best regards

Milena

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SQL gateway. 'Locking' problem.

while debugging, is there in Caché a command to 'unlock' the instance of a class ?

close class, and kill class is not enough.

same problem in %Activate link

for each debug I have to exit (Halt) the terminal,

make debug in C#

coming back , and re-load again in Caché.

Regards,

Emanuel

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In .NET Core you have an option to extend a session using a "sliding expiration". This means that if over half the time has passed and the user actively uses their session then the expiry timer gets reset and the user remains logged in. This can lead to the curious situation where you have an active authenticated user with an expired access token being used in data-access requests.

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I am generating the DDL from a modeling tool - ERStudio. But the DDL has 2 issues right now.

DROP TABLE schema_name. CASCADE CONSTRAINTS;
The Constraints is not supported but works with the statement - DROP TABLE Study_Definition.EVENT_STORE CASCADE;

Second if there is no object to drop, it throws an error, so is there a check like in sql server If_Exists that we can use in CacheDB?

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Working on a project to call a web service and the soap header has custom header elements that need to be signed. i reviewed the %soap.inc and didn't see any appropriate macro

EBS and IDP elements need to be signed

here's a provided header sample

this a sample output that I created.

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Hello, everyone,

InterSystems Certification has designed another certification exam and we need input from our community to help to validate its topics. Here's your chance to have your say in what makes an expert in system administration with InterSystems Caché or IRIS. And, yes, we'd like to hear from you Caché admins!

Here's the exam title and the definition:

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Question
· Jul 1, 2021
ifexpression syntax

What is the correct syntax when passing values on a zen method after ifexpression?

<pagebreak ifexpression="%report.PageBefore('Graph',1)=1"></pagebreak> ????

.....

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Dear Developers,

I have a complex ZEN PDF report that has multiple tables that essentially are the same but are populated by different global definitions. The code has hardcoded groups for these tables but I would like the number of tables to be variable as many as there are global levels for a particular report.

Is there any way that I could build a report from a variable source of data rather that hardcoding 10 or more exact sections like the code below ?

The code below is for table 2 in my report

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Hi developers!

As a follow-up to my previous post on the Node.js Native API, I created a quick poll because it may be interesting to see what technologies developers are using in their applications around the world with IRIS & Caché. I put a poll below, just check all boxes you have used or plan to use with InterSystems technology.

Thank you all for your cooperation!

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Hi,

in our system we usually display an information if someone locks data that another user tries to edit. Like: "Data locked by <user>/<program>"

We have a global that is set at userlogin with following information:

^BA020(0,3,$job) = "<user>;<program>"

We show that information by getting the jobnr/owner from the locktable ^$LOCK("<ref>","OWNER") and looking at ^BA020.

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InterSystems FAQ rubric

This error occurs when an instance of the class is already open at compile time.

There are two ways to deal with this issue:

  1. Terminate the process or application that has the instance open
  2. Compile options in the studio build menu: Check the compile flag “Compile classes in use” and compile.

If you want to determine which process is using the class, try the sample routine below.

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This is a series of programming challenges for beginners and experienced Caché programmers.

For an introduction : go to article https://community.intersystems.com/post/advent-code-2016-day1-no-time-ta...

In today's challenge, you have to execute instructions that control how bots are handling microchips.

The input contain instructions that can be something like this :

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Question
· Oct 16, 2024
Generate JWT token in Cache 2018

Hi,

I try to generate JWT tokens in Cache (not in IRIS).

In IRIS I managed to generate tokens using ##class(%OAuth2.JWKS).AddOct("HS256",secret,.jwks).

But In Cache there is no such routine.

Could you provide me a place to find an example how to use JWT, please ? I am interested to generate a token in Cache, send it to javascript client, and read a token provided by the client and check it is valid.

Kind regards,

Alin Soare.

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