InterSystems Caché is a multi-model DBMS and application server
Hello everyone!
Does anyone know of a library that can be used to create Mock objects for Objectscript classes?
Right now, my team has been building mock objects by hand to help circumvent dependencies when writing and executing unit tests, but I always wondered if someone had ever created a Mock library like Mockito to help quicken the process.
Thanks!
Here are a few examples of conversions and operations you might need, along with links to documentation where you can learn more.
At the time I wrote this, Eastern Daylight Time was in effect for my Caché system.
Caché has a simple time format, with a longer range of recognized dates compared to some other technologies.
The current time is maintained in a special variable $HOROLOG ($H):
In this article we are going to compare $Increment and $Sequence functions.
As a developer, you have probably spent at least some time writing repetetive code. You may have even found yourself wishing you could generate the code programmatically. If this sounds familiar, this article is for you!
We'll start with an example. Note: the following examples use the %DynamicObject interface, which requires Caché 2016.2 or later. If you are unfamiliar with this class, check out the documentation here: Using JSON in Caché. It's really cool!
Hello!
This article is a small overview of a tool that helps to understand classes and their structure inside the InterSystems products: from IRIS to Caché, Ensemble, HealthShare.
In short, it visualizes a class or an entire package, shows the relations between classes and provides all the possible information to developers and team leads without making them go to Studio and examine the code there.
If you are learning InterSystems products, reviewing projects a lot or just interested in something new in InterSystems Technology solutions — you are more than welcome to read the overview of ObjectScript Class Explorer!
Can I connect to Cache using SSMS (SQL Server Management Studio) and view schemas and build queries as I do for SQL Server?
If yes, step-by-step instructions for setting up the connection would be greatly appreciated.
I googled the topic but didn't find any results that were on target.
Thanks,
Christian Bahnsen
In this article I'll describe how to set up web services and/or REST services using EWD 3.
Since EWD 3 is designed to be modular, you can construct the environment that exactly meets your needs, but for much of the time you'll probably find that the pre-built EWD 3 ewd-xpress super-module does most of what you need because it hooks together all the core EWD 3 and other building-blocks you'll need:
The topic of for/while loop performance in Caché ObjectScript came up in discussion recently, and I'd like to share some thoughts/best practices with the rest of the community. While this is a basic topic in itself, it's easy to overlook the performance implications of otherwise-reasonable approaches.
For each defined property, query or an index, several corresponding methods would be automatically generated on a class compilation. These methods can be very useful. In this article, I would describe some of them.
Has anyone tried using Server-Sent Events with Caché/HealthShare/Ensemble and angularjs?
Just like Caché pattern matching, Regular Expressions can be used in Caché to identify patterns in text data – only with a much higher expressive power. This article provides a brief introduction into Regular Expressions and what you can do with it in Caché. The information provided herein is based on various sources, most notably the book “Mastering Regular Expressions” by Jeffrey Friedl and of course the Caché online documentation. The article is not intended to discuss all the possibilities and details of regular expressions. Please refer to the information sources listed in chapter 5 if you would like to learn more. If you prefer to read off-line you can also download the PDF version of this article.
Caché process failures on RHEL V7.2
InterSystems WRC has investigated several issues of process failure that can be attributed to a recent change in Red Hat Linux.
A new feature implemented in RHEL V7.2 (systemd-219-19.el7.x86_64) can cause O.S. IPC (Inter-process communication) semaphores to be deallocated when a non-system RHEL user logs out (system users, i.e. with a UID number < 1000, are excluded)
End users sure love Excel tables. So, how can you deliver the second to the first? Read this post to find out.
This article, and following two articles of the series, is intended as a user guide for developers or system administrators, who need to work with OAuth 2.0 framework (further referred to as OAUTH for simplicity) in their InterSystems product based applications.
Have some free text fields in your application that you wish you could search efficiently? Tried using some methods before but found out that they just cannot match the performance needs of your customers? Do I have one weird trick that will solve all your problems? Don’t you already know!? All I do is bring great solutions to your performance pitfalls!
As usual, if you want the TL;DR (too long; didn’t read) version, skip to the end. Just know you are hurting my feelings.
InterSystems is delighted to announce the support of Docker container technology as a platform from the moment 2016.1 will be released.
InterSystems Caché globals provide very convenient features for developers. But why are globals so fast and efficient?
Basically, the Caché database is a catalog having the same name as the database and containing the CACHE.DAT file. On Unix systems, the database can also be an ordinary disk partition.
The Art of Mapping Globals to Classes 1 of 3
Looking to breathe new life into an old MUMPS application? Follow these steps to map your existing globals to classes and expose all that beautiful data to Objects and SQL.
In most cases, if one class depends on another, the class compiler will detect this and determine the correct compilation order. For example:
Please note, this article is considered deprecated, check out the new revision over here: https://community.intersystems.com/post/tutorial-websockets
The goal of this post is to discuss working with Websockets in a Caché environment. We are going to have a quick discussion of what websockets are and then talk through an example chat application implemented on top of Websockets.
This is a posting about a particular feature of Caché which I find useful but is probably not well known or used. I am referring to the feature of Language Extensions.
This feature allows you to extend the commands, special variables and functions available in Caché Object Script with commands, special variables and functions of your own. This functionality also applies to other languages the Caché supports at the server, including Caché Basic and Multivalue Basic.
Why would I need or want to add new commands ?
This post is intended to guide you through the new JSON capabilities that we introduced in Caché 2016.1. JSON has emerged to a serialization format used in many places. The web started it, but nowadays it is utilized everywhere. We've got plenty to cover, so let's get started.
As we all know, Caché is a great database that accomplishes lots of tasks within itself. However, what do you do when you need to access an external database? One way is to use the Caché SQL Gateway via JDBC. In this article, my goal is to answer the following questions to help you familiarize yourself with the technology and debug some common problems.
A customer is using Caché online backups and needs to automatically purge the cbk files with a scheduled task.
This is a wheel has been reinvented uncountable times already and I know somebody out there has a well written, extremely robust version that has already stood the test of time.
Does anyone have a nice routine/class/task for purging old Caché backup files?
Caché mirroring is a reliable, inexpensive, and easy to implement high availability and disaster recovery solution for Caché and Ensemble-based applications. Mirroring provides automatic failover under a broad range of planned and unplanned outage scenarios, with application recovery time typically limited to seconds. Logical data replication eliminates storage as a single point of failure and a source of data corruption. Upgrades can be executed with little or no downtime.
Working on implementation FHIR to my project, I found interesting project HAPI-FHIR, which could help me to quickly launch my FHIR api server with InterSystems Caché as a storage, because this projects uses Hibernate to connect to database, as an example they use DerbyDB. I tried to change settings to use InterSystems Caché, but unfortunately it does not work and throw some errors inside HIbernate. As I found in Caché documentation, I have not some many options, I just have to set Cache dialect, and set database url.
Hi!
Is there any way to export a class package to xml file programmatically which will include all the classes of the package?
Attached code contains a very basic $system.WorkMgr example.
It uses several jobs (workers) to update different chunks of rows of a table.
Steps:
In this case, I have tested the example in a 8-core laptop:
Is it just set varName = 1 or is there an actual true/false value?
