The Art of Mapping Globals to Classes (4 of 3)
The forth in the trilogy, anyone a Hitchhikers Guide to the Galaxy fan?
If you are looking to breathe new life into an old MUMPS application follow these steps to map your globals to classes and expose all that beautiful data to Objects and SQL.
If the above does not sound familiar to you please start at the beginning with the following:
Let's say we have two serial classes, one as a property of another:
Class test.Serial Extends %SerialObject
{
Property Serial2 As test.Serial2;
}
Class test.Serial2 Extends %SerialObject
{
Property Property As %String;
}And a persistent class, that has a property of test.Serial type:
Class test.Persistent Extends %Persistent
{
Property Datatype As %String;
Property Serial As test.Serial;
}So it's a serial, inside a serial, inside a persistent object.
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.
Hi All,
Please, does anybody have Source Control Classes for Team Foundation that you could share?
Thanks.
It was InterSystems hackathon time and our team, consisting of Artem Viznyuk and me had Arduino board (one) and various parts of it (in overabundance). And so like that our course of action was set - like all other Arduino beginners, we decided to build a weather station. But with data persistent storage in Caché and visualization in DeepSee!
The Caché System Management Portal includes a robust web-based SQL query tool, but for some applications it’s more convenient to use a dedicated SQL client installed on a user’s PC.
SQuirreL SQL is a well known open source SQL client built in Java, which uses JDBC to connect to a DBMS. As such, we can configure SQuirreL to connect to Caché using the Caché JDBC driver.
Previously I showed you how to run pButtons to start collecting performance metrics that we are looking at in this series of posts.
One of the topics that comes up often when managing Ensemble productions is disk space:
The database (the CACHE.DAT file) grows in a rate that was unexpected; or the Journal files build up at a fast pace; or the database grows continuously though the system has a scheduled purge of the Ensemble runtime data.
It would have been better if these kind of phenomena would have been observed and accounted for yet at the development and testing stage rather than on a live system.
For this purpose I created a basic framework that could aid in this task.
Hi,
I have a bit of code that does a find and replace on a "template" and inserts additional content. For example it replaces the @DATA@ with an html table:
<html>
<body>
<div id="data">@DATA@</div>
</body>
</html>
Currently doing this with the $replace function:
Set text=$replace(text, "@DATA@", data)
Hi!
I believe the simplest is (to work with csv delimited by ";"):
set file = ##class(%File).%New( "data.csv" )
set sc = file.Open( "R" )
if $$$ISERR(sc) quit ; or do smth
while 'file.AtEnd {
set str=file.ReadLine()
for i=1:1:$length( str, ";" ) {
set id=$piece( str, ";" ,i )
write !, id // or do smth
}
}
do file.Close()
Possible options:
different variants of error handling with sc code.
Embrace while loop into try/catch block.
And what's yours?
Suppose you have developed your own app with InterSystems technologies stack and now want to perform multiple deployments on the customers' side. During the development process you've composed a detailed installation guide for your application, because you need to not only import classes, but also fine-tune the environment according to your needs.
To address this specific task, InterSystems has created a special tool called %Installer. Read on to find out how to use it.
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?
When calling out to web services there are several settings of the Business Operation that play together in controlling what will happen when a response is not returned in the desired time.
when ever I pull the xml file from business services and its failed in business process and I am getting the below error.
ERROR
When using Studio, ODBC or a terminal connection to Caché or Ensemble, you may have wondered how to secure the connection. One option is to add TLS (aka SSL) to your connection. The Caché client applications - TELNET, ODBC and Studio - all understand how to add TLS to the connection. They just need to be configured to do it.
Configuring these clients is easier in 2015.1 and later. I'm going to be discussing this new method. If you're already using the old, legacy method, it will continue to work, but I would recommend you consider switching to the new one.
This article will describe and include an example of how to embed an external PDF file into an HL7 segment, specifically ADT_A01:2.3.1 OBX(). This can be useful when attempting to insert pictures or other external data into an HL7 message. In this example, the name of the PDF file to be embedded is provided in the incoming HL7 message in OBX(1):ObservationValue field.
Hello,
When we need to create a utf-8 encoded XML file, we use the Charset property of %XML.Writer:
set writer=##class(%XML.Writer).%New()
set writer.Charset="UTF-8"
How can we create regular txt files with such encoding?
Our Cache Installations are 8 bit and not unicode.
Thanks,
Nael Naser eldeen
Some may think it's a strange / daft idea, but just today the Raspberry Pi folks have announced that they've now sold more than 10 million of them..and counting. That's a huge potential marketplace, and a great platform for getting people to hear about Cache and try it out. Given its focus on the education sector, another great way of getting heard about.
This post provides further detail on the suggestions from the DeepSee Troubleshooting Guide about what to do if a user is not able to view a listing in a DeepSee cube, but instead sees errors like this:
ERROR #5540: SQLCODE: -99 Message: User <username> is not privileged for the operation [zfindStatement+118^%SQL.DynamicStatement.1:<namespace>] (8)
A quick start guide to connect Ensemble to RabbitMQ using the RabbitMQ Java Client, a Java proxy class and the Ensemble Java Gateway.
Word and PDF documentation, source code and utilities available at https://github.com/toncat/ensemble2rabbitmq.
Server
- Windows Server 2012 R2 x64
- Erlang OTP 19.1
- RabbitMQ Server 3.6.5
- RabbitMQ Java Client 3.6.5
Class Queries in InterSystems IRIS (and Cache, Ensemble, HealthShare) is a useful tool that separates SQL queries from Object Script code. Basically, it works like this: suppose that you want to use the same SQL query with different arguments in several different places.In this case you can avoid code duplication by declaring the query body as a class query and then calling this query by name. This approach is also convenient for custom queries, in which the task of obtaining the next row is defined by a developer. Sounds interesting? Then read on!
Prmoetheus is a really good to combine measures, and export them in graphical dashboards
I would like to write some a caché exporter for Prometheus, that will allow to expose some metrics of the database, or even some metrics of my own
Did anyone already tried ?
Thank for the answer
How To Display Custom SDA Extensions in the Clinical Viewer
____________________________________________________________________________
Written by Sebastian Musielak, InterSystems Support, November, 2016
Introducing non-persistent messages. eXpert-to-eXpert
Background
InterSystems Ensemble as a tool does a lot for the Developer. One of the nice features is the Message trace utility. It shows a message flow diagram. The diagram shows the progress of the message processing real time. You can get many-many useful information from the production. In any case, someone needs to find a bug in a production implementation, without the Message trace utility it could turn into a real nightmare.
On the other hand, keeping message “traceability” is not for free. A heavy loaded production can very quickly run out of resources just because of the house keeping functions of Ensemble. House keeping functions such as maintaining message header, log entries, message queue generates a significant load on the Caché database used by Ensemble.
This article is about to show how to force Ensemble work more for the everyday life, instead of being prepared for “any-time-debugging”.
This is an eXpert-to-eXpert article. Therefore, I assume the deep understanding of Ensemble.
Today, I was reading some source code, and encountered the following method signature:
Method SendRequestSync(pRequest As %Library.Persistent, ByRef pResponse As %Library.Persistent)And I immediately thought, why is there a ByRef?
This week I am going to look at CPU, one of the primary hardware food groups :) A customer asked me to advise on the following scenario; Their production servers are approaching end of life and its time for a hardware refresh. They are also thinking of consolidating servers by virtualising and want to right-size capacity either bare-metal or virtualized. Today we will look at CPU, in later posts I will explain the approach for right-sizing other key food groups - memory and IO.
So the questions are:
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.
This article will provide tips and tricks on customizing Ensemble business hosts with configurable settings.
Ensemble production Settings are configurable values that control the behavior of a production and its hosts.
The documentation for adding and removing Settings and specifying categories and controls for Settings is provided at the link:
http://docs.intersystems.com/latest/csp/docbook/DocBook.UI.Page.cls?KEY=EGDV_prog#EGDV_prog_settings
