Some days ago Alberto has written a very interesting article about the usefulness of ObjectGenerators available in Caché.

In this article, Alberto shows an example RuleEngine based on XData, and how it is possible to improve the process of filling such rules. Caché Studio has a Studio Asist for XData; you may have already seen examples of it if you use ZEN or %Installer.Manifest.

Let's say the user need to execute some heavy code (build a report, or extensive calculations etc.). So, of course it needs to be asynchronous, and we possibly need to store some data about execution status. How?

Does Caché support a relationship property ordered according to a specifc value? 

What shoud be the best approach? 

Hi, InterSystems Developer Community!

We are working to improve this site to make it comfortable to read, contribute, share and get answers from InterSystems Developer Community!

But while we haven't fixed some UI issues please find in this post some simple answers on how to deal with Developer Community.

How to add post?

Open Communities page, choose desired e.g. Caché and click "Create New Post" button.

How  to subscribe to the post's updates?

To subscribe to post's updates and get them via email click on Favorite link under the post digest.  For example:

How  can I manage post's header ?

The attached file contains an example of code generation using ObjectGenerators which builds a very simple homemade RuleEngine. 

Code generation is an excellent way of increasing performance moving run-time calculations to compile-time.

We could generate code creating routines or implemeting methods using ObjectGenerators. In this example we are using ObjectGenerators.

Update: Rule Engine is now on GitHub https://github.com/intersystems-ib/cache-iat-ruleengine

A very simple code generated method

For starters, let's begin with a very basic code generated method:

This morning on the old Caché Google Group, someone posed the following question, which I've decided to answer here, because it's interesting!

Is there a way to iterate ClassMethod's params, and get param's names and values?

The first answer I can come up with is: it's not easy! In any method, you could try to write code like this (where methodName is the name of your method):

The cache has error messages default, for example , " -139 SQLCODE : Competition impairment on the update: row versions are not the same. "

How i can exchange it for a more friendly to the user's message? I use the CSP.Page and form_save ( ).

What is best practice for this situation?

Caché Monitor is a database\sql tool primarily for InterSystems Caché but can also connect to MS SQL Server, MS Access and more databases. Within Caché Monitors Server Navigator you see all available Namespaces on your Caché Servers. No need to know the name of the Namespace, no need to configure many many JDBC Connections by hand. Just click on the namespace and see all objects like tables, views, classes and more...

In preparation for a presentation I need a  real-world LDAP schema that has been customized a bit beyond the basics.   Perferably this would be based on an OpenLDAP system which would make it easier to merge into this presentation. 

If you have such a schema you would be willing to share please respond or contact my directly at Rich.Taylor@InterSystems.com

Thanks in advance.

Rich Taylor

Here is my original query:

SELECT EventType, InitiatedAt, COUNT(*) as cnt
FROM HS_IHE_ATNA_Repository.Aggregation
WHERE EventType = 'LOGIN'
AND LocalDateTime > '2016-02-16 11:00:00'
GROUP BY EventType, InitiatedAt

This gives me data like this:

However, I need to get the data back as two columns with all but the last concatenated and delimited, more like this:

I tried this:

Hi,

Given a log file with these records representing, hypotethically, the ‘movements’ or changes in residential city, for citizens, like this: 

Do you need to build an object-oriented application using Caché? Take this course to learn how to create, retrieve, update and delete objects in Caché.

Caché Objects Introduction

Learn the basics of Caché objects. This course will provide an overview of Caché Classes, Methods, and interaction with the Caché database by creating, saving, loading and deleting objects. The lessons in this course assume that you have some previous object-oriented programming experience. Learn More.

Hi,

We do have a production including a SOAP.OutboundAdapter that make a request to a .NET WCF Service. The response from that service vary in size. When it come to large one, we talk about maybe 8000 records (with 6-8 attributes per record) in xml, the adapter always give a timout. Even if we put a high number of seconds or set -1. After 1 1/2h still nothing get back. It's just standing there and waiting for ever.

Our .NET developer have look at it (on the WCF-service)  and from ther point of view they say that it seems like Ensemle can't handle such big responses.

I'm interested in different approaches on how to store user data in Caché. I'm assuming that application uses Caché security/Caché users and not a self-made authentication system.

Several approaches, I'm familiar with:

I'm writing some custom functions for use in a routing rule.  I have a few that are working, but right now I'm trying to use one that has no parameters.  Typically this would be a sub instead of a function, but I'm not familiar enough with Cache to know what I need to do here. 

Here is the code:

We heard from a customer who wanted to display a version number as a read-only production setting. During the build on the build server, this version number is added to the Production class. This works fine, and the Version is displayed in the Portal, but the customer wanted to write protect it, so the enduser can’t change it. The customer had defined the setting like this:

Property Version As %String;

Parameter SETTINGS = "Version:Info";

We advised the customer to define SETTINGS like this instead:

Parameter SETTINGS = "Version:Alerting:label"

Looking at a property defined as follows:

Property SystemTime As %Library.TimeStamp [ SqlComputeCode = {Set {*}=$ZDATETIME($NOW(),3,1,0)}, SqlComputed ];

The documentation talks about using SqlComputed and SqlComputeCode with SqlComputeOnChange (specifying which events will trigger computation), and about using them with the Calculated keyword (so it's always computed). I don't see any specific explanation of the case above, though, when neither SqlComputeOnChange nor Calculated is specified.

From a bit of testing, it seems that the behavior is:

This post is intended to share how we have implemented HL7 v.2.x in XML format in several Ensemble projects.

We have added to our local InterSystems Iberia GitHub repository a package which uses an approach that takes advantage of EnsLib.HL7.Message class.

More information here:

https://github.com/intersystems-ib/Ensemble-HL7-XML

Given the following code:

I get <UNDEFINED>start+4^DeploymentTool *tstVar
 

I also tried setting the variable outside the start method but that doesn't work either.  I realize I could pass tstVar to the TestIt() routine but I'm trying to create a couple variables that will be reused repeatedly so that doesn't really work.

Hello,

I am trying to log the output of csession in Linux. I try this command:

csession cache | tee myoutput.log

Although it works each new lines at screen output doesn't appear at row 1...

Any tip?

I am pleased to announce the third 2016.2 field test kit, 2016.2.0.590.0.

In the week since the last field test posting Development has made over a hundred fixes and improvements in Atelier, Enterprise Manager, Ensemble and Caché.  Unlike the previous field test kit, though, in which the changes were distributed evenly over multiple areas and products, in this kit over half of the changes are associated just with Atelier.

Please download the kit and give it a try; the latest field test of 2016.2 is available HERE.  And, as always, we welcome your feedback.

Steve Glassman, Director of QD

I've searched the ObjectScript reference for any instances of Upper, Lower or Case and the only thing is a case/switch statement.  In all the documentation I can only find SQL and Cache Basic references for things like UCASE.

So how do I do this in ObjectScript?

For instance, if (ucase(dtype)="G") { }

Has anyone come up with a way to create a separate thread of processing that can achieve shared access to a set of objects created from the initials process?  The situation is this.  There is a large complex set of objects representing a business process.  Some of these objects are in-memory only.  The desire is to spin off a separate thread that could do some ancillary processing on this data set without slowing down the main process.   Any thoughts?

Is it seconds or what?  The default is 15  

Do to unforseen circumstances the Atelier build that was distributed with the Cache 2016.2 field test had certain incompatibilites which prevented it's effective use with the server that it was bundled with.

We are working on remediating this regretable situation and will provide a compatible Atelier in the 2016.2 field test refresh which is scheduled for today Monday, 1st of Februrary.

We sincerely apologize for any inconvenience so caused.

Hi,

Do you know how to export SQL errors to a text file from a terminal session in Caché?

Thanks

I'm designing a workflow for PHR via FTP.  What I've done is create a single FTP adapter to pick up files from multiple customers.  A router then accesses a lookup table and determines if a particular customer is allowed to send a particular message type to the state.  If not, the message doesn't go out.  It seems like everyone is against this approach (other than my CEO, thankfully), including Intersystems:

Hi, 

is it possible to integrate a csp file as the default page in the IIS 7?

I want reach http://localhost/csp/sys/UtilHome.csp over http://localhost/

Bill McCormick wrote in the GoogleGroup 

"There was a known problem with this in the 5.0 release and has been 

fixed. It will never work out of the box. You have to define a CSP 

application of the name "/" - the config manager used to invalidate this 

but putting it in the cpf worked - I forget if that is fixed or not. 

After that it should all just work. Feel free to log an issue with 

support if it still fails in anyway. "