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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 1, 2017
Casting JSON

I'm doing a REST service. A method has as body parameter a JSON corresponding to a class A.

In my production I have class A so that I retrieve the parameters using a dynamic object, such that:

Set body = ##class(%DynamicObject).%FromJSON(%request.Content)
Set myObjectA = ##class(A).%New()
Set myObjectA.Id = body.Id
Set myObjectA.Name = body.Name
Set myObjectA.Date = body.Date
Set myObjectA.Salary = body.Salary

I would like to know if I can avoid doing the manual mapping, doing a casting, since I am sure that FromJSON will return a class A. Something like this:

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hi-

Can someone give me an example of how to JOB a class method that requires an array of values to be passed to it by reference.

This is what I tried, but am getting compile errors because of the .params

job ##class(%SYSTEM.OBJ.FM2Class).All(.params)::5

Any thoughts on how to accomplish this, the simplest way. I would like to avoid writing all of this to some global and having to write some wrapper to pick it up and then call the class method, which I certainly could do. but is this the only way to do it?

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Question
· May 17, 2017
Soap Wizard

HI,

Please let us know the solution to the below error:

ERROR:#5388 - You do not have write permission on the database class .
%SOAP.WebClient is in , so class lock cannot be obtained .

Thanks,
Shobha

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Hi,

I have a situation where I write a character stream to a file. The file content gets signed and the signature is sent to a service provider together with the file content.

The signing is done using openssl.

This works perfectly on a dev PC, which is runnning Windows and has a little-endian architecture.

The problem is as soon as I do this on the server, which has a big-endian architecture, the signed value is incorrect according to the service provider.

The content is signed using RSA SHA256 with PSS padding.

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Hi Community,

There is any way that I can use Studio Source Control in Atelier, or adapt it to use?

We have a solution based on Studio Source Control, and I cannot make it works with Atelier, I can not even see the classes .

Thanks,

Andrei L. Nenevê

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Good day, every process in my software is about to update 3 specific globals in row when the process is called to do some job. I need to guarantee that during updating of those globals with multiple processes there is only one process that is actually working with those globals. Moreover I need my globals unreadable if other process is in critical area.

Example:

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Hi,

My doubt is about the SQL Query in Caché:

I don't want to take all results from the table and orgainze them manually, for example: I have a table with 50 records, but I only want to select 10 records, being from tenth until the twentieth and this without knowing their IDs.

So, how can I do this, without losing performance, there is any way?

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Hi all,

I was wondering if there is any way to trigger the compilation of a class based on the compilation of another (unrelated) class. For example:

Class 1 = test.class

Class 2 = test.class.type.one

Class 3 = test.class.type.two

Every time class 2 or class 3 is compiled in Studio I would like to have class 1 automatically compiled as well.

The reason I need this is because class 1 has a method with CodeMode set to objectgenerator which generates some code based on what is found in classes 2 and 3.

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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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Hoping someone can help.

I need to convert a timestamp from the following format (YYYYMMDDhhmmss e.g. 20160105125915) to UTC time in the same format.

I presume I need to convert it to the system format ( like $HOROLOG ) and then use something like ConvertTimeStampToHorolog or perhaps LocalWithZTIMEZONEtoUTC but not sure of the syntax.

Thanks,

Conor

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Question
· Nov 20, 2017
Cache ODBC - Access Denied

Hello,

I'm working on integrating a Cache database into an existing .NET project of mine. I'm trying to execute certain queries utilizing the Cache ODBC driver. The first error I ran into was "[S1000] [Cache ODBC][State : S1000][Native Code 417] Access Denied". The part that's throwing me for a loop though is that the application ran ~200 successful queries before I started getting that. After some of those Access Denied errors, they turned into "[Cache ODBC][State : S1T00][Native Code 450] Request timed out due to user timeout". This was all with the regular (2.5?) driver.

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Currently, we have an application running in one namespace ("Database B") that has globals and routines mapped to another database ("Database A"). After enforcing clean up on Database A, we found that 90% of the disk is free. We would like to compact Database A and release the unused space. However, we are running OpenVMS, which seems to be the issue.

For databases consisting of only globals, we are able to use ^GBLOCKCOPY; however, we need to ensure that the routines and mappings are also copied.

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Hi, Community!

Is there an option to get an archived file of globals in one command. Say for:

Do $System.OBJ.Export("Class1*D.GBL,Class2*D.GBL","data_gbl.xml")

get something like:

Do $System.OBJ.Export("Data*D.GBL","data_gbl.gz","gzip")

And also to have the convenient one click way to import it to the namespace via terminal or Control Panel?

If anyone already has this module, share please?

It would be very convenient for import/export/continuous integration purposes cause globals can be really heavy.

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Hi, folks!

I'm sending emails with %Net.MailMessage.

How can I add a new line for the email body?

The code is:

dim msg as %Net.MailMessage = ##class(%Net.MailMessage).%New()
set msg.Charset="UTF-8"
do msg.TextData.Write("Dear  "_Username)
do msg.TextData.Write("Line1")
do msg.TextData.Write("Line2")
And I'm getting in email:
Dear UserLine1Line2

How can I get:

Dear User

Line1

Line2
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Hello,

I work with trigger and I need afeter update make INSERT into LogTable value of prorerty of saved class. This is what i have in this monent.

S className = ..%ClassName(1)
S cls=##class(%Dictionary.CompiledClass).%OpenId(className)
F i = 1:1:cls.Properties.Count() {
S prop = cls.Properties.GetAt(i)
S propName = prop.Name
S value={propName*N}
}

How Can I get value given "prop".

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