In the prior part of this series we have provided introduction to Google MapReduce approach, but still not covered their possible ObjectScript implementation. Which we will start to explain today.
In part I of this series we have introduced MapReduce as a generic concept, and in part II we started to approach Caché ObjectScript implementation via introducing abstract interfaces. Now we will try to provide more concrete examples of applications using MapReduce.
After a five-part series on sample iKnow applications (parts 1, 2, 3, 4, 5), let's turn to a new feature coming up in 2017.1: the iKnow REST APIs, allowing you to develop rich web and mobile applications. Where iKnow's core COS APIs already had 1:1 projections in SQL and SOAP, we're now making them available through a RESTful service as well, in which we're trying to offer more functionality and richer results with fewer buttons and less method calls. This article will take you through the API in detail, explaining the basic principles we used when defining them and exploring the most important ones to get started.
This earlier article already announced the new iKnow REST APIs that are included in the 2017.1 release, but since then we've added extensive documentation for those APIs through the OpenAPI Specification (aka Swagger), which you'll find in the current 2017.1 release candidate. Without wanting to repeat much detail on how the APIs are organised, this article will show you how you can consult that elaborate documentation easily with Swagger-UI, an open source utility that reads OpenAPI specs and uses it to generate a very helpful GUI on top of your API.
Due to a new project I'm getting involved inside %Installer stuff deeper than ever I'd be happy to. Most of it was pretty easy to get, thanks to documentation, articles and SAMPLES example, while I can't dig good solution for one problem.
Can you create ad-hoc Caché relationship objects that are not part of the original Caché class definition? One of the drawbacks with relationships is that that the more relationships you have defined, the more difficult it can be manage. I was wondering rather than having all your relationships defined in the Caché class, could you programmatically create relationships between classes as and when they are required?
This article assumes that you are familiar with Zabbix and SNMP monitoring, if not, there are some very interesting posts on the Community, especially this one (https://community.intersystems.com/post/creating-custom-snmp-oids) which contains a lot of information on how to configure and request an SNMP Cache server.
I have a 100% ZEN application combined with 100% ZENReports and am also using IFind which is part of the solution.
Our application is a cloud hosted solution where we lease a server which does not have a website, only Cache configured under IIS. Connectivity to our site is premised on a URL string such as u12345.usa-server.com/csp/namespace/Cache.cls
Given location in INT code, as Cache usually reports on error (zWriteReport+25^SomeFile.1), is there any programmatic way to determine corresponding place in original source code?
English word ="Other anemias" It is converted to french as printing "Autres anemies".But correct word is " Autres anémies".I wrote a program in the cache. But did not get the correct output.So How to solve this issue
Let's say I have two classes: A and B. They share no common parent except %SystemBase. But these classes have some properties with the same name (type may be the same or not):
Class A {
Property data As C;
Property data2;
}
Class B {
Property data As D;
Property data3;
}
I need to automatically convert object of class A into object of class B. I'm planing to write a class generator that generates a separate class that converts A to B. It would work like this:
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.
I have been asked to assist in the planning of the a new server for our database, which we will be changing operating systems from OpenVMS to Linux (RedHat distribution). However, its difficult to find material regarding what would be recommended, which is likely due to the database being proprietary.
In looking at the information provided below and hoping to decrease processing time, would anyone be able to recommend type of configuration we should have for the new Linux server? Please feel free to ask any clarifying questions.
We are using Cache in our application. We are using default username/password for connecting to the Cache Database through Cache Manege Provider. Can we limit the permission of the user _SYSTEM to access only limited database/namespace.
Can we create new user for ODBC connection? Is there any API provided for creating user with limited access so that the user creation process can be automated.
I am trying to return the maximum of the value of 2 fields: LastViewed and LastDownloaded AS a local variable -LastAccessed for each row, using a SQL query . These values are stored as $ H format. Is there an existing SQL command that compares two column values ? I could not find one, so I tried using a $Select statement . I got an error that said A term expected beginning with either of: identifier, constant, aggregate, $$,(,:,+....)
I need to find a solution for a client that has ZEN based application. Certain parts of this application remained Terminal based for which a unsigned Java applet was used to embedded this within the application. The control is old and requires an old version of Java which IT folks are not happy about.
I am looking for a replacement that will allow a terminal, either telnet or directly use cTerm, window to be embedded within a web application, specifically ZEN, based on Cache. Any suggestions or success stories would be welcome.
I've been building up a REST services API, consisting of a dozen or so classes referenced from a Dispatch class, which has route mappings for the first piece of the URI. I'd like to have the Dispatch class be able to output all of the available Services, with some documentation. Is there something like a %Library resource that I could use to pull this information from each of the classes?
> Customizable System Monitoring. ## Introduction The Polymetric Dashboard is a stand-alone module that provides enhanced monitoring tools for a Caché environment. Equipped with over one hundred sensors that monitor key system metrics, a robust REST API, and a modular AngularJS user interface, the Polymetric Dashboard is fully functional out of the box. However, the Polymetric Dashboard is designed to be customizable; any system metric can be monitored by creating a new sensor, and the visualization of collected data can be tailored to specific requirements and purposes.
In this posting I want to raise the profile of a feature that arrived in 2009.1 but is perhaps not very well known.
It is sometimes useful to make certain packages, globals or routines available to all of your namespaces. Of course you can add the necessary mappings whenever you create a new namespace, but here's a simpler way.
In case you've never used the "About" link at the top of Management Portal, here's a screenshot of the kind of information it shows. I've highlighted the link and some of the information I find it handy to get from here.
By update
