New post

#Caché

45

  

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

Documentation.

I am trying to find documentation on how Cache Studio locks a Routine/Class a developer is editing.

On the flip side, I am looking for documentation on how Atelier does the same.

Ultimately I am looking for the differences and what happens if both Studio and Atelier through different developers go after the same Routine/Class.

I am not asking for an answer (however that would be nice), I am looking for pointers to documentation.

4 7
0 687
Question
· Nov 27, 2017
"Contains" operation for bitstring

aa=$zwc(411,1,1,3)/*$bit(1,3,5)*/
bb=$zwc(403,1,0,2)/*$bit(1,3)*/

Is there a handy function to test wether one bit string is covered by another one bitstring? For example, "bb" is covered by "aa".

I currently implement this by one AND operation and then do a bitcount, I just want to know any default function is already out there.

Thanks.

0 3
0 380

Hello,

I was wondering if there is a way to maybe temporarily alter the [Private] tag dynamically or any other way to run a Unit test against class method, which has been labeled as [Private]?

I mean, I understand there is a workaround to create a non private class method inside this class, which will in turn call this private method and run a Unit test on the non private method, but I am looking for a way to do this without altering the original class.

Thank you,

Alex

0 2
0 382
Article
· Nov 27, 2017 1m read
Upgrading TLS configurations

Caché will not change the cryptographic settings in an existing TLS configuration when you upgrade. This means that unless you've updated them yourself, you're still using the values from the very first version you started using SSL in.

5 2
0 937
Question
· Nov 23, 2017
Indexing null value

Dear community!

I have problem with index NULL value. Unique index doesn't work for this case. If I use insert and one of parameter is "NULL". Message of constraint doesn't appear and row is inserted into table successfully. How Can I use index with NULL?

1 3
0 710

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)

0 3
0 454

Dear community!

What do you think about webinar "Declarative programming on COS"? I want to do such one.

I am going to tell about main points of declarative programming and how you can implement it in your real projects.

Please feel free to write your opinion here.

Please if you wish to become a member of such webinar write me a message to atygaev.mi@gmail.com with subject "webinar".

0 1
0 272

I am in Atelier editing a Class.

I want to look at the window or pane that shows my Properties,

I get to the tab that show Properties and their Value as shown below.

Now, how do I get the properties from my Class into the image below?

0 2
0 357

Hello, this is going to be a stupid question, yea I know, there are no stupid questions.

Say, I have an Object Property, Name or Count or Title, or whatever.

How can I get a list, or find out all the different ways it can be expressed?

Example:

-Property Name As %Name;

-Property Name As %String="me"

-Property Name As %String [ Required];

But what other parameters, keywords, restrictions, lists, etc. that I can apply to this Property?

0 5
0 548

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...

The challenge of day 21 is about scrambling passwords.

There are a few functions you need to implement that will do operations on a string :

2 0
0 405

We have an web application accessed using https, that uses CSP technology with frames.

The initial 'login' is via a single CSP page, which then redirects to another CSP page which creates the frames (4 in all) and loads a CSP page in each of those. For the most part the frames load without error, but sometimes when logging in and sometimes while using the system ' 5916 Illegal CSP Request ' errors occur.

I say 'login' in inverted commas as a Cache login is not performed just an application login, I don't know if that's relevant so thought I'd mention it.

0 2
0 735
Question
· Nov 20, 2017
how to release row lock?

I have restored one database from backup, but when I query from some of tables, prompt error :

this error remain after restart Caché service

I can skip this error with %nolock in select query.

My question is:

1. why there were locks after restart service?

2. Can I release/rollback these locks by sql so I can query without %nolock?

0 3
0 556
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:

0 8
0 470