#Caché

Consider a design where there could be three or four or more servers and there is a need to have these eventually consistent between them all (and not considering database mirroring here).  

The current Caché documentation here demonstrates this well using object synchronization between two servers, however it doesn't indicate whether more than two servers can participate to create a "mesh type" deployment.  Below is a diagram of what I'm curious to know is possible to implement with Object Synchronization.

Hi All, 

I am providing support to an AP about using document criteria on Multiple Templates (Explicit Dispatch).

I am trying to set the  criteria value from:

view.setDocumentKey('initial-search',{patirntId:tPatId});

 However it is not possible to get the criteria value on %GetJSONContent through pCriteria parameter object.

How can I do this with Multiple Templates on bootstrap plugin?

Thanks.

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.

Learn about the various options of using SQL within Caché!

Hello, our customer, large industrial company, is considering modernizing their old CSP application so it can run on multiple client device types, using responsive design.

They have a lot of experience with CSP and some ZEN.

They are new to REST and have some limited knowledge of javascript - perhaps not enough to the extent used by client framework.

Does anyone have a framework or a set of templates that you would be willing to share?

Thank you!

Dan Kutac 

I have an sql that is refusing to play fairly.

I have

• tuned affected tables
• made sure I'm on the latest version (2016.1)
• got enough global buffers
• tried forcing the sql to use outliers correctly

Still nothing. here's the SQL

Hello,

I'm trying to connect to a Caché server from Atelier; the Caché server is 2015.x.

The address and port I'm trying to connect to is the SQL gateway server; and I get, each time, an "unexpected end of file from server".

Note that unfortunately, for the moment, I connect as _system... And the Caché install has the default privileges.

What am I doing wrong?

This is a bit weird.  I'm trying to use `DATEDIFF()` to calculate the time since the last message on an interface.  For some reason, when no messages are received, the number steadily decreases.  This is the opposite of what should happen.  Here is my current query and a few sequential result sets:

SELECT getDate() as now, max(TimeCreated) as latest, DATEDIFF (s,getdate(), max(TimeCreated)) as difference
FROM EnsLib_HL7.Message

Hi,

If you want to import data from a mySQL export file (exported with mysqldump), you will find here a little script that could help.

Only the INSERT commands in the sql file are executed into Caché. Indices are not computed for better performance.
%NOINDEX, %NOCHECK and %NOLOCK are generated on each INSERT line.

Currently, the file can not contain a "),(" pattern inside the values part of the INSERT command. If this is the case, the line is skipped. This feature may be implemented in the extractValuesList method.

Good day, Cache developers and users!

At first, sorry for my bad English -)  I have a little question.

Hi -

I'm trying to figure out what is the best (or at least pros & cons) on how to manage login accounts in a multi-tenant SaaS web based application context.

Assume that a company is designing a collections of web based applications that they will be selling as "services" to their clients, and that these clients will each have their own "users" and "customers" that will be logging into these services.

Often when debugging COS code you get an error message such as '<UNDEFINED>test^routine *test' so the first thing you want to do is to take a look at this code and see what it is doing. From the command line you can:

ZLOAD routine ZPRINT test

Which means splitting the $zerror information into the routine name and the line and adding the zload/zprint commands. Also you often want to view the lines above the one where the error happened as this gives you some context of how you got to this line, using ZPRINT you could 'ZPRINT +1:test' but that may display hundreds of lines.

I have some logging code that outputs task status information to a log file. I would like to make the log available for reading while it is open for writing. The file is opened using the "L" option (Lock):

Open tLogFile:"WASL" Set tLogOpen=1

My intent was to prevent multiple processes from accidentally writing to the file and having messy output. Unfortunately, if the process is taking longer than expected, one can not simply open the log file to figure out what is going on because the "L" lock prevents the file from being opened for reading as well as writing.

This question came on the Ensemble in Healthcare email list. It's a great question. I'm working on an answer, but am posting it here to get any other input. I'll also address the option of using %CSP.REST.

Hello everyone,

Using Intersystems Healthshare/Ensemble, I am trying to make a RESTful Interface between Android/iOS app and Cache database. I have some queries and I am unable to find where exactly I can get any resources on them.

Greetings! This article describes yet another simple way of creating installers for the solutions based on InterSystems Caché. The topic covers applications, which can be installed or completely removed from Caché with one action only. If you are still documenting installation instructions that have more than one step to do to install your application — it’s high time you automated this process. 

I am trying to execute a system query. - %SYS.Journal.File_Search()

The Query is looking for a Journal File Name and a String.

However, the Query line accepts no parameters. - Query Search() As %Query(ROWSPEC = "Offset:%Integer")

But in the SearchExecute method if checks for File and String.

ClassMethod SearchExecute(ByRef qHandle As %Binary, String As %String, FileName As %String . . .
{
                i $g(String)="" q $$$ERROR($$$JournalFileSearchUndefined)
                i $g(FileName)="" q $$$ERROR($$$JournalFileUndefined)

Our company is looking for someone with expert object script skills and experience developing with REST using Caché. We have an existing application that currently supports a mobile application and a web application. The API is up and running but we need another developer to add new features and keep up with demand.

Experience with Amazon AWS is highly desired as the api is running on Windows in EC2. Familiarity with GitHub is also required.

Pay can be negotiated on a per hour basis after you provide an estimate for the time required to complete a given feature.

Hi!

Want to share with you code snippet of try catch block I usually use in methods which should return %Status. 

{ 
 try {
  	$$$TOE(sc,StatusMethod())
 }
 catch e {
 	set sc=e.AsStatus()
 	do e.Log()
 }

Quit sc 
}

Here $$$TOE is a short form of $$$TROWONERROR macro.

Inside macro StatusMethod is any method you call which will return %Status value. This value will be placed into sc variable.

In case of sc contains error execution will be routed to try catch block. You can wrap any Status methods calls in your code if you need to catch the errors coming from them.

We are in the process of putting a new UI on the existing product documentation, including a mobile-optimized view. We also plan on releasing additional "solution based" documentation that is targeted at common usage scenarios or important configuration tasks.

We are interested in your feedback on our current product documentation - what you like and dislike and especially what changes you would expect to see to make it as useful as possible.

You may experience errors executing Java programs that rely on the JAVA_HOME environment.

For example when Create PDF from this pivot in DeepSee or in this case, outputting a Zen Report as PDF.

You can verify the PDF generation configuration by clicking on the Verify Now button on the Management Portal System > Configuration > Zen Report Settings page:

Outputting a Zen Report as PDF causes an error, for example ZENApp.MyReport.cls in the SAMPLES namespace:

Using the URI Query Parameter $LOG=1:

Solution

Good afternoon, I have working prototypes of each of these approaches. I do not have an expansive cache background.

I have a couple of projects where I am ingesting files from disk.

The name of the file contains a lot of the information I will need to reference the file in the future.

What are the advantages and dis-advantages of these two approaches:

Store the whole filename and use SqlComputeCode to populate properties in a class?

Parse the data out of the filename on ingestion into properties in a class?

For each approach what are the implications to indexing?

Thank you.

Hi,

I sometimes get asked if Weblink will still be available (as a downloadable ad-on these days) for some versions to come. 

I realize that this is old technology now, and that there are better and faster ways to do the same things today.

Thanks

S

On the class reference %Library.GlobalCharacterStream is marked as deprecated in favor of  %Stream.GlobalCharacter.

How I can migrate the data from class properties defined as %Library.GlobalCharacterStream to the new one %Stream.GlobalCharacter? 

Does the %Stream.GlobalCharacter have the same SQL support from %Library.GlobalCharacterStream?

Thanks.

Hi,  The ZEN Mojo Widget reference at ../csp/sys/%ZEN.Mojo.WidgetReference.bootstrap33xHomepage.cls is a great reference for viewing the different components available with each helper plugin - and it also supplies snippets of JSON code to use in your layout definitions.

I'm having problems with the Bootstrap $navbar component however. This is layout definition, with a navbar and button contained within the bar.:

I was trying to modify the REST.DocServer sample in the SAMPLE namespaces to use the new %Object and %Array system objects (Ensemble 2016.2 build 636) with the following changes:

/// This method returns a list of namespaces for this server

ClassMethod GetNamespaces() As %Status

{

    #dim tSC As %Status = $$$OK

    #dim tList,tNS,tFilteredList,tValue As %String

    #; Get the list of namespaces

    Do List^%SYS.NAMESPACE(.tList)

    Set tNS="" For  {

        Set tNS=$Order(tList(tNS),1,tValue) If tNS="" Quit

        #; Only want namespaces which are enabled and are not remote

I get NOROUTINE when I try to call a label in a routine in another namespace:

d someLabel^|”OTHERNAMESPACE”|someRoutine(inputVar,.resultByReference)

Two questions:

1.  What is wrong with my syntax for calling a label in the other routine, versus just the root of the .int/mac?

2.  Can I pass a parameter by reference when using extended routine reference?

Hello,

It is time for me to eat my own dog's food and start implementing unit test running with coverage :) I will be inundating IRC with questions at this point, but I have a more general question first.

In this tutorial, it is supposed that your unit tests are exported as XML first... But that's not very practical. Is there a way, instead, to run all tests from a given project without having this export?

My first thought on how to do this would be to:

Hi,

Is it possible to have a ZEN Mojo application that uses Bootstrap and controls from jQMobile ?

In a fresh installation running Zen Mojo version 1.1.1, my ZEN Mojo page declares:

Parameter CSSINCLUDES As STRING = "bootstrap-3-3-5/dist/css/bootstrap.min.css,jquery.mobile-1.4.5.min.css";
Parameter JSINCLUDES As STRING = "jquery-1.10.2.min.js, jquery.mobile-1.4.5.min.js,jquery-1.11.3.min.js,bootstrap-3-3-5/dist/js/bootstrap.min.js";
..

and a pageContents of:

Hello,

Still related to the unit test with coverage support project, one goal is to make that package available to everyone.

One possible way I already know of is that all fully qualified class names (ie, the package + the class name) start with %, which mean that on installation all classes will end up in the %SYS namespace, but this requires that the install be done as a user with the necessary privileges to write to %SYS.