#Caché

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

Documentation.

All time

Hi,

is there a way to implement the behaviour for a zen dataCombo? Let´s assume the dataCombo retrieves it´s data via sql query, lets say 50 records. Now the user type into the input of the datacombo 'a', which shall auto select the first entry beginning with character 'a'. If the type 'a' again, the next item from the list is selected. What I am looking for is an approach to implement such an behaviour. See a simple <select> component which support the desired functionality out-of the box.

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The goal of this writing was to illustrate how to restore backup before the patch would be applied. The alert notes that:

The risk can be avoided by applying journals from the beginning of the journal file that was switched to at the start of the backup, rather than accepting the default of starting from the journal marker position.

Having non-patched Caché 2015.1.4, I ran sample database backup and restore just to get where I should answer "No". Collecting journal info from the backup log:

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NewBie's Corner Session: 5 Operator Precedence

Welcome to NewBie's Corner, a weekly or biweekly post covering basic Caché Material.

Click on the Caché Cube in your system tray and select Terminal to try out the commands.

Order Precedence means the order in which mathematical operators are executed. In a Mathematical expression, you may have Multiplication, Addition, Subtraction, and Division. Which of these are executed first, second, third, etc.?

The basic Operator Precedence of mathematics is:

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Question
· Feb 9, 2023
Tracking %RCOPY and %RI

Let's supposed somebody updates routines via %RCOPY or %RI, the really old-style hardcore way which still works. Does that leave any log traces in Journaling or system globals, as of when exactly did it happen or what was the IP address of the machine changes came from? I am aware only of the Date Modified changes as seen when opening the file.

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We have multiple databases running on a single server. I have duplicate interfaces on each database.

If we're doing testing in copy #1, the interfaces should be running in that copy. I want to block analysts who try to start the interfaces in copy #2.

So, I'm looking for something that would check the port and tell me the status: already in use or free.

My challenge is that this system needs to stay ISO/ANSI compliant.... so I can't use any of the newer tricks.
Is there any plain-old Cache' I could use for this task?

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Was wondering if anyone had a simple way of calling ##class(Ens.Director).EnableConfigItem() within a Business Process or adding code to a Custom Service to start or stop the object?

The use case is that I have a Process that uploads a file into a external SQL table. When it is finished I want it to kick off another Service that does the processing of the data that it just uploaded. Once it is finished the response is sent back to the service and when the service receives the response from the process, I want to stop that service from running.

so...

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Hello all!

As we ObjectScript developers have been experiencing, preparing an environment to run CI related tasks can be quite the chore.
This is why I have been thinking about how we could improve this workflow and the result of that effort is IRIS-CI.

See how it works here.

Quickstart

1.Download the image from the Docker Hub registry:

Open Exchange app
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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.

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NewBie's Corner Session 2 Variables Set and Write commands

Welcome to NewBie's Corner, a weekly or biweekly post covering basic Caché Material.

Session 2 – Click on the Caché Cube in your system tray and select Terminal to try out the commands.

Variables

Like other computer programming languages, Caché uses Variables and the values they represent to control programming. Variables are elements that represent data values. Manipulating and interrogating variables is at the root of programming.

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[SOLVED]

added

>/tmp/compilew.log &>/tmp/compilew.log ; tail /tmp/compilew.log

to redirect the output to the stdout. Somehow the javac has wierd behavior with the output on errors and verbose information.

Hi,

i want the JAVA-Projections and wrappers to compile after Caché created the files. The creation of the files works 100%.

My addition to createProjection in our Projectionclass is following:

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Article
· Feb 2, 2016 1m read
Cache' databases as UNIX sparse files

Some third party backup products may by default restore CACHE.DAT files as UNIX sparse files when there are trailing zeroes in the backup file.

The support for sparse files vary from UNIX distribution and file system types. Sparse files attempt to use file system space more efficiently when blocks allocated to the file are mostly empty similar to thin-provisioned storage. The file system transparently converts metadata representing empty blocks into "real" blocks filled with zero bytes at runtime. The application is suppose to be unaware of this conversion.

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Discussion
· Sep 21, 2020
Unit Testing Naming Convention

Hi Developers!

Recently we discussed the naming convention on packages we deploy and even made some choices.

Here I want to have a conversation on the naming convention for unit tests.

Of course, we wish every good library has unit tests. Here is the documentation and some good articles(one, two, three) regarding it on the Developer Community.

Let's decide on the naming of UnitTests packages?

The suggestion is that unit test classes will all start with the UnitTest package name.

E.g. if your library's class name is:

johndoe.lib.class

The related unit test class will be:

UnitTest.johndoe.lib.class

What about folders?

The suggestion is that unit test classes will live separately from source classes, e.g. in /tests directory.

Here is the example of a repository with unit tests that are named and placed according to the proposal.

What do you think?

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Question
· Aug 12, 2019
write #

Hi

Is there any way to control what control sequence is sent to a device when a "write #" is executed?

I have an application that establishes a banner at the top of the terminal window and when we do a "write #" the banner disappears. I need to be able to recreate the banner line as part of the screen clear.

Thanks

Jenna

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Looking at the documentation expalining the use of client side menus, including the drop down menu.

I was messing around trying to get the "Open", once clicked, to use javascript to open windows file explorer to open/pick a file.

I've got it to partially work... Using keystrokes Ctrl-O will open the file explorer yet clicking on the drop down's File/Open does nothing.

Not sure what I'm doing wrong here.

NOTE: I had commented out the two &html lines in the Testing Method... and doing a Ctrl-O still work.

Why?

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Question
· Jan 16, 2018
Testing in studio

After creating a ClassMethod for a routing rule is it possible to test an HL7 message within Studio rather than using Management portal? It would make it easier to debug the custom function to see where the rule is failing.

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I have a <tablePane> element with OnCreateResultSet and OnExecuteResultSet methods; autoExecute is "false" but the OnCreateResultSet and OnExecuteResultSet methods are nevertheless called on page load.

I want the user to be able to press a button to submit the parameters, then have this button call tablePane.executeQuery() to execute the query.

autoExecute is simply igonored. We're on 2014.1.3 with plans to upgrade to 2016 soon.

Are there more settings I need to set? Or is this attribute simply ignored?

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Question
· May 16, 2018
DTM management question

Is there a group in or outside of this community for discussion of DTM issues? I am working on a conversion to Caché for a client but in the meantime, he is still live with his DTM system and a system management issue has arisen. The convo:

Client: Do you know how to increase the page limit in MUMPS DTM? One version of my database I use for one customer is telling me I have reached my page limit. I have increased the page limit in the database you are reviewing; so I figure there is a setting I am missing.

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Hello everyone,

I am trying to use @() and SYSTEM() from Cache Terminal. I am searching for blinking text . I have found -5 as a Screen Display Option but not aware like how to use on terminal.
Can any one please help ?

Thanks,
Gunwant

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Dear Colleagues and Friends,

is there any indication that the .NET object representation of Cache objects (i.e. InterSystems.Data.CacheClient.dll) complies with .NET Standard? I'm planning to extend our existing .NET client/server solution with a mobile option by Xamarin Forms and can't find any significant hints in the internet.

I'm just fooling around a bit and made some expreiments with a REST API and a generic object-to-JSON tier:

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Question
· Oct 3, 2017
.NET Gateway vs. Java Gateway

Hello,

we have to implement some application logic using either Java or .NET. Which should we choose? Given that all other considerations are equal, which is in your experience better way performance-wise to interact with external components in Caché: .NET Gateway or Java Gateway?

Thanks.

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