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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
· Nov 19, 2017
Force inner select to be executed

I have a query that I am attempting to run, but inner query is being rolled up into the overall query - per the optimizer (and jobexam observation). While I know that if the inner query runs first, I will eliminate a number of records (making the result set smaller, and return quicker).

Just an example of what I am attempting to do:

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Question
· Aug 25, 2017
Zen Report - ErrorNo: 5540

I'm working on an existing Zen Report that uses queryClass/queryName to retrieve data using a class that has a Stored Procedure method. Which works fine.
I have created second class with a Stored Procedure method, I modified the zen report to use this class and now I'm having the following error.

Error: SQLCODE: -99 Message: User UnknownUser is not privileged for the operation
ErrorNo: 5540

Regards,

Rui

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You might find it useful or not. It depends on what you can imagine it to be used with, like I had to.

Either way, I created a lib that can fetch environment variables from a file or from the OS where Caché is running.

Mostly know as dotenv. Many languages have it, so why not Caché?

The usage is pretty simple:

If you want to use OS env vars exclusively, just use the method:

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Hi,

We have a application developed in CSP and JS. Is there any way to make this application available in multiple language like Spanish etc.

We are ready to re-write the code in Zen also if it supports that feature.

Could any one of you please assist/advice a Solution to reach the required goal using Cache technologies, it will be a great help if someone has any sample code for the same.

Thanks

Paras

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I want do to a "simple thing". Show a dynamic log of actions in the browser as we can see on Terminal. For that, I guess to make a simple CSP Page that show a new line every WRITE command is the thing I need.

But how I refresh after each WRITE?

How I can refresh the content automatically?

I made a simple CSP Page and in method OnPage I do this test:

write "Start..",!
for i=1:1:10{
hang 1
write "Doing "_i,!
}
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Hi all,

We faced a problem where we would like to map a $lb object to its corresponding data model structure in order to later on export it as JSON.

So imagin that we have something like this that actually maps to a persistent table with its structure. 

$lb("",,,,,"",,,"BOOLEAN","0",2,2,"1",,"bla",$lb(,,"bla","20050502123400"),"",1,"bla",,0)

Is there a way to transform this $lb (without the need of openig the object itself) to a JSON object with the proper table fields as properties?

Many thanks

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Has anyone tried adding syntax highlighting to GitHub for Caché CLS files?

Looking at the list of supported languages and extensions...

https://github.com/github/linguist/blob/master/lib/linguist/languages.yml

It looks like Mumps is supported, and there is also an existing language with a .cls extension, which would account for why I see some very odd highlighting going on with some of my code.

There is a page on contributing a new language here...

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Let's say I have two classes: A and B. They share no common parent except %SystemBase. But these classes have some properties with the same name (type may be the same or not):

Class A {

Property data As C;

Property data2;

}
Class B {

Property data As D;

Property data3;

}

I need to automatically convert object of class A into object of class B. I'm planing to write a class generator that generates a separate class that converts A to B. It would work like this:

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Question
· Jul 10, 2017
How to encrypt column value in sql?

hi

I want to update some columns in one table like this:

    update table1 set col1=%SYSTEM.Encryption_AESCBCEncrypt(col1, 'key')

but the error is 

ERROR #5540: SQLCODE: -359 Message: User defined SQL Function '%SYSTEM.ENCRYPTION_AESCBCENCRYPT' does not exist

what's the corect syntax? Thanks!

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In %Net.SSH.Session there is a method settraceMask and that will create a wireshark cap file for help with troubleshooting a connection. I dont see any class in Net.FtpSession that can be used for troubleshooting. Is there a different method that I should use?

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I'm trying to recreate a smaller copy of our DEV machine on a sandbox instance. I installed a new instance, and thought it would be a good idea to copy over a few cache.dat files from the critical namespaces (but not all of them), and start from there.

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Greetings to all!!! Suppose there is a table Mother (ID, Name) and Child (ID, Name, Mother), Mother in the table Childis a relationship. Let's say the task is to deduce the names of all the children whose their moms' names start with the letter 'A', I can do this in two ways in sql, and I can not understand the difference, the pros and cons that when to use:

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Hi,

After restoring all the Cache related files on a machine, I am performing journal recovery using the command "^JRNRESTO". It works as described in the document and the recovery succeeds. However, the command is interactive. Is there a way I can run it in a programmatic way? I don't want to just supply a text file containing answers to all the prompts. I am wondering if there is way I can pass all the information upfront to the command.

Thanks,

Raghu

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I ran the below query in three different modes. Coordinated Universal Time is 5 hours ahead of Eastern Time so there is difference in value from column 1 and column 2 in ODBC, Display mode, but not in Logical Mode. By default the query executes in ODBC mode when we query the data from outside world(via ODBC connection).

I don't know why query 2 and query 3 outputs different from query 1.

Query 1. Ran in Logical mode, DATEPART() took in memory stored timestamp data(stored in UTC)

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I have a tablePane ZEN Component and I am trying to get a filter running on the Specimen Id / Lab Number. The SQL is fairly complex with 3 UNION ALL statements joining 4 tables and a couple of lookup tables.

How would I get the filter on SpecId to work for my tablePane? It's not automatically applying the filter for me so I think I need code something.

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I have classes A and B, B derived from A, A has method Abc.

From INT of class B I see that compiler copies implementation of Abc to class B, so that Abc exists both in A and B.

As result, when B invokes Abs, B.Abs() is executed instead of A.Abs(). In result debuger is not able to step into Abs and breakpoints in A.Abs never hit.

Why this happens and how can I avoid this?

Update:

OK, now I know the reason: compiler makes the copy if Abc has this line:

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Question
· Dec 10, 2017
Cache and Database

Hi, I'm a student, weak programming. I ask for your help, I write a program in C #, there are two tables, but I do not understand how to organize the connection between them many to many. Table in DataGridView1 from DataSet1 on Form1 key connection in DataGridView1 from DataSet1 to Form3

I do this on Form1

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What is difference between using a command $classmethod rather than just invoking them straight away?

For example if i need to call a class and its method i can just use like

do ##class(circle).radius()

rather than using

do $classmethod("circle",radius)

(I suppose both of them doing the same function i am not aware of it)

Please help me understand what is different and is there any specific usage.

Correct me if i have made mistake.

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