#Caché

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InterSystems Caché is a multi-model DBMS and application server. See more details here.

Documentation.

Article Paul Gomez · Apr 20, 2016 1m read

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.

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Article Tony Beukes · May 6, 2016 2m read

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

Remove the quotes around the path defined in the JAVA_HOME environment variable and

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Question Peter Kopp · May 4, 2016

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.

 

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Question Steve Pisani · May 4, 2016

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

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Question Steve Pisani · May 4, 2016

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.:

ClientMethod getLayout(key, criteria) [ Language = javascript ]
{
  var layout {};
  switch(key) {
  case 'home' :
   // add layout objects to the children array
layout {type:'$navbar

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Question Jeff Semmens · May 3, 2016

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

        If

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Question Renee Cannon · May 2, 2016

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?

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Question Francis Galiegue · Apr 20, 2016

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:

  • grab the project (by name, I suppose?),
  • grab the list of classes defined by this project,
  • inspect the classes,
  • consider unit tests only these
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Question Steve Pisani · Apr 27, 2016

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:

XData pageContents [ XMLNamespace = "http://www.intersystems.com/zen]
{
<pane xmlns="http://www.intersystems.com/zen" xmlns:mojo="http://www.int

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Question Francis Galiegue · Apr 30, 2016

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.

This is rather convenient in my situation, sure; but is there another way which does not require such privileges?

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Question Mike Kadow · Apr 27, 2016

Has anyone noticed that the Feature Map and Master Index was dropped from the 2016 version?

Anyone know why?

Please see the attached file of a screen shot.

Well, I have a screen shot file, but when I try to up load .docx, or .pdf, or html I am prevented, don't know why?

Yes, frustration!

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Question Scott Beeson · Apr 27, 2016

I have two servers in our TEST environment.  One with HSBUS and one with HSREGISTRY.  Let's call them "HSBUS01" and "HSDB01" respectively.

Now, I can access HSBUS with my SQL client by using the JDBC driver pointed to hsbus01.full.name.com and port 1972 and specifying a namespace of "HSBUS".  I am, however, unable to access the HSREGISTRY instance via SQL with a similar combination of information.

I have access to the web interface on both servers (/csp/sys/#CSP.Portal.Home.zen). What screen can I use to compare the relevant settings? I think it might be a port issue.

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Question Andy Caranicas · Apr 27, 2016

We have a query that looks something like:

select a, b, c, d, e, f

from tbla inner join tblb on tbla.....

This query runs in the expected 200-400 ms range.

If we run the same query but reduce the select to just:

select a

from tbla inner join tblb on tbla.....

then the query runs for 30 minutes or more. 

The rest of the query is identical.  Is there a logical explanation for how this can happen?

Thanks.

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Question Steve Cross · Apr 28, 2016

I have to disect thousands upon thousands of strings like this:

96842-2-AEV.00001-63561-001958-100728760I-42

I've been able to pull out the first, second and final segments as separated by hyphens, but now I have a predicament where I need to use the second segment, the 2 shown in the example above, in a join to another table.  Problem is Cache apparently doesn't like doing that.  Just the same, I have to find a way.

Here's the code I'm using to pull that segment out into as separate field in the query results:

substring(prov_record_id, charindex('-', prov_record_id) +1, charindex('-AEV.',

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Question Fabio Goncalves · Mar 21, 2016

Hi Community,

How can I create a JSON with the object ID by using the %Object:$toJSON API?

I have the following piece of code bellow where I create an object reference, create a %Object instance from %fromObject and them I am creating the JSON from $toJSON, but it does not expose the %ID (object id). How is the best approach to create a JSON with the respectives object IDs?

Try{Set tPersonObj = ##class(Data.Person).%OpenId(pId)If $Get(%objlasterror) $$$ThrowStatus(%objlasterror) Set tObj = ##class(%Object).$fromObject(tPersonObj)Write tObj.$toJSON()}Catch ex
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Announcement Stefan Wittmann · Apr 27, 2016

Starting with 2016.2 the Java XEP binding will no longer support the in-memory connection mode. The in-memory mode was deprecated in earlier versions and applications should switch to the TCP/IP connection mode instead.

The TCP/IP connection mode has bridged the gap in performance to a large extent over the past couple of years and enables the Java client to run on a remote machine.

Let me know if you have any questions or concerns.

This is a cross-post from our compatibility blog: http://blog.intersystems.com/compatibility/2016/04/22/removal-of-in-mem…

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Question Steve Pisani · Apr 19, 2016

Starting off with a working REST interface, I can access the CSP Application definition screen for the application  (System > Security Management > Web Applications > Edit Web Application), and "turn off" the application by clearing the Enabled: [ x ] Application checkbox. From then on my REST calls return an HTTP 404 error. (That's expected).

However - one expects that re-enabling the Application in the CSP Application screen, would return my REST services to a working state, however, this is not happening.  All REST requests continue to return an HTTP 404 error.

SOLVED: I have solved this

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Article Timothy Leavitt · Jan 5, 2016 1m read

(Possibly?) little-known fact: It's possible to use $ListBuild on the left hand side of the equals sign in a set command to extract multiple list values at once:

set $ListBuild(several,individual,variables) = list

For example:

USER>kill
 
USER>set colors = $ListBuild("red","orange","yellow")
 
USER>set $ListBuild(r,o,y) = colors
 
USER>write r,!,o,!,y,!
red
orange
yellow

See for reference: http://docs.intersystems.com/cache20152/csp/docbook/DocBook.UI.Page.cls…

This feature was news to me - I use $ListBuild lists a lot but hadn't come across it until today.

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Question Francis Galiegue · Apr 25, 2016

Hello,

Here's the code:


Method isTestClass(className As %String) As %Boolean
{
	if (className = ..#UTCLASS) {
		return 1
	}
	
	#dim c as %Dictionary.ClassDefinition
	#dim status as %Status
		
	set c = ##class(%Dictionary.ClassDefinition).%OpenId(className,,.status)
	
	if ($$$ISERR(status)) {
		throw ##class(%Exception.StatusException).CreateFromStatus(status)
	}
	
	if ('c.SuperIsDefined()) {
		return 0
	}
	
	#dim children
	#dim len as %Integer
	#dim i as %Integer
	
	set children = $listFromString(c.Super, ",")
	set len = $listLength(children)
	
	for i = 1:1:len {
		if
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Article Daniel Kutac · Apr 27, 2016 1m read

Hi,

I'm posting this for the benefit of others. Not often one changes certificates in Cache, at least in my case. I run a system, that uses certificates to encrypt SOAP messages, and since the last time I ran it, my certificates expired.

So I renewed them using our PKI tool, so far so good. I gave all (3) certificates the same names (and filenames too) as to those expired, thinking that everything would just work fine next time I call the SOAP service.

Unfortunately, I got trapped.

It took me a rather longer while to realize that replacing old files with new ones is not enough.

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Article Eduard Lebedyuk · Apr 25, 2016 6m read

Introduction

If you manage multiple Caché instances across several servers, you may want to be able to execute arbitrary code from one Caché instance on another. System administrators and technical support specialists may also want to run arbitrary code on remote Caché servers. To address these needs, I have developed a special tool called RCE.
In this article, we will discuss what are the typical ways of solving similar tasks and how RCE (Remote Code Execution) can help.

What possible approaches are available?

Execute OS commands locally

Let's start with the simplest – executing OS

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Question Orion Correa · Apr 21, 2016

I've been using iFind indices in one of my applications but this morning discovered that the index is missing data. I confirmed the issue also exists in our test environment and rebuilt the indices there. That seems to have fixed the immediate problem. However I'd like to understand how this came about to avoid it happening in the future.

Has anyone encountered this before and know the cause?

We've regularly upgraded the Ensemble instance when new releases come out and are now on 2016.1. We've been using the indices for just over a year without issue except that sometimes this error comes up:
ERR

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Announcement Francis Galiegue · Apr 20, 2016

Hello community!

Heretofore is announced a new project which aims at providing a usable library for both running unit tests and collecting code coverage information at the same time:

https://github.com/litesolutions/cache-utcov

I shamelessly admit that this is my first project written in ObjectScript; the only source file right now barely loads a %Studio.Project instance on a given namespace and fails ungracefully on failure (it HALTs; meh); and even on success it will not even list the items correctly... Well, that's part of the learning curve.

This project is of course not "innocent": for

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Question Fabio Goncalves · Apr 19, 2016

Does Caché support SQL CREATE SEQUENCE as in PostgreSQL?

If not, what would be the best alternative? Create my own sequence logic as the example bellow? 

 Class Util.MySequence Extends %Persistent [ ClassType = persistent, ProcedureBlock ]
{


Property dummy As %String;

Property myvalue As %Integer [ Calculated, SqlComputeCode = { Set 
{myvalue}=##class(Util.MySequence).CurrentValue()}, SqlComputed ];

ClassMethod CurrentValue() As %Integer
{
        s x=$I(^MySequence)
	Quit x
}

Method myvalueGet() As %Integer [ CodeMode = expression ]
{
..CurrentValue()
}

}

 

Thanks.

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