Hi, Community!

Here is the digest of Articles and Questions published on InterSystems Developer Community in November 2016.

Most viewed

Caché and Ensemble 2017.1 field test now available  212

Simple Arithmetics  179

Reflection in Caché  177

Importance and Collection of Exact Version Information ($zv / $zversion)  162

How do you iterate through SQL in Cache ObjectScript; and across namespaces?  129

Connect Cache client to GT.

 Error:

    [SQLCODE: <-400>:<Fatal error occurred>]
    [Cache Error: <<SUBSCRIPT>%0AmEdun+4^%sqlcq.HSREGISTRY.cls966.1 ^||%sql.temp(1,"")>]
    [Location: <ServerLoop - Query Fetch>]
    [%msg: <Unexpected error occurred:  <SUBSCRIPT>%0AmEdun+4^%sqlcq.HSREGISTRY.cls966.1 ^||%sql.temp(1,"")>]

Here is an example of a query that gives the error:

    SELECT COUNT(DISTINCT Criteria) as Relevance FROM HS_IHE_ATNA_Repository.Aggregation
    WHERE EventType = 'CROSS GATEWAY QUERY'

The content of the actual field is XML, but the query simply returns a number.

I have a class which defines a property as array of %String. Is it possible to index values of this property and use this property in SQL?

I have tried 'Index idx On prop(ELEMENTS)' and then a select from the generated collection table, but this is still orders of magnitude slower than queries to the containing class.

Is there a tool to get the slowests queries ?

In writing some code on:

Cache for Windows (x86-64) 2015.1 (Build 429U) Fri Feb 13 2015 14:37:23 EST

I noticed an unexpected "ROLLFAIL" error when a Unique Index fail was generated in a %Save() call.

The object SHOULD fail to save, since the Unique criteria is not met, but I didn't expect to see a ROLLFAIL error as the "Last Error".

When running the following class code:

Class BUG.Test Extends %Persistent
{

Property Field1 As %String;

Property Field2 As %String;

Index idx1 On Field1 [ Unique ];

ClassMethod Test()
{
    kill ^BUG.TestD
    kill ^BUG.

Hi -

I know that when specifying Caché password rules (i.e. what constitutes a valid password definition) that the "Pattern Matching" logic is what is getting leveraged under the covers to enforce the "A Password Must conform to X" rule. I was hoping that people could share some more sophisticated pattern matching rules. (in particular, I was wondering what a rule that would require non-repeating mixture of letter, numbers, & punctuation of an overall minimal size)

I have a Zen page, and I would like to have an onload handler to run a bit of javascript when the page is ready. Unfortunately, the page inherits from a template, and the template already has an onload handler that does all kinds of useful things. Is there any way to override the onload handler in my page, while still being able to call the onload handler that is inherited from the template? In ObjectScript, there is ##super, but in javascript, there is no equivalent of that.

Coming from a C/C++/C# background, I was expecting the & and | operators in Cache ObjectScript to perform bitwise operations on integers, but apparently they don't.

I checked the online documentation http://docs.intersystems.com/latest/csp/docbook/DocBook.UI.Page.cls?KEY…

but couldn't find any information on bitwise integer arithmetic.

So given the following code:

set x = 10  //bit pattern is : 1010

set y=3      //bit pattern is:   0011

What operator can be used to return z = x <BITWISE OR> y  = 1011 (binary) = 11 (decimal)

Thanks,

Bill

Good day

Additional tool for MUMPS servers MiniM InterConnect:

http://www.minimdb.com/tools/interconnect.html

to connect job on one MUMPS server to other job on other MUMPS server in client-server mode. This tool can connect different MUMPS systems on different OS and with different processors - MiniM, Cache and GT.M in any pairs.

Regards,

Eugene Karataev

Hello

I have to receive GPS tracks through a TCIP port using SOCKET listen port from INTERNET, how can I implement this in CACHE?  through websocket ?. Thanks if you can help me.

Does anyone have a snippet to create the Namespace and database with defaults in one command?

Something like:

do ##class(Utils.Namespace).Create(Name)

Please share?

Thank you in advance!

I had a table which contained data and worked fine, without changes the code of the persistent classes I now get the following error:

II have tried to browse the data for a 'clue' but no result.

What is the explanation of the error message?

Thanks in advance!

Hi all, Basically i have 2 queries..

1. Is there any simple way to fetch the data directly from the database (using the URL and credentials) from the csp file without creating a link table for that particular Table...?? If there is, could you please share the syntax of using them ..?

2. Can we have an object return type from the below mentioned method to a javascript function.. ???

Introduction

A calculated measure is a powerful feature in DeepSee and can help to enrich your analyzes.  In the case of complex or long running computations plugins can be useful. This article shows with a simple example how you can build and use a plugin in DeepSee.

Just curious how many companies use in their work Docker containers, I mean not only with InterSystems products. And if such companies exist, which of them uses docker and doesn't  use it for InterSystems products  by some reasons. What are the reasons? For companies which already uses InterSystems in containers, how do you use it? Development environment, testing or even in production ?

And if you don't use but thought about it, what are the reasons which stop you.

Does anyone know how to connect a Cache client to a GT.M database?  I recently installed Osehra VistA on my PC and it uses GT.M, but we're supposed to use Cache Studio to develop.  I tried adding a server to Cache (specifying 2222 as the port) and I get an "access denied" error.  Port  2222 is the correct port which I use for for VirtuaBox and I have no problem connecting to VistA.  I also tried going into the Management Portal to set up a local connection but this isn't working.  There are some sites that say the products 'nodem' or 'node.

Good day

Let me offer Cache Tools

http://www.minimdb.com/tools/cachetools.html

Routine and Global editors for Intersystems Caché, ported to Windows, Linux, MacOSX.

Regards,

Eugene Karataev

www.minimdb.com

When creating a filter located on a dashboard that targets all, is there a way to narrow that filter down?

For example, in our data we have some dates that are well out of range due to data quality issues, but they still appear in the drop downs. Is there a way to say, only make available the below dates in the filter?

Another example, If we want to only look at Emergency data, it still provides all the wards for inpatient activity and activity in other hospitals, meaning, to get to just the Emergency wards you have to scroll through everything?

Hope that makes sense.

In the WRC distributions download page, the following products are listed:

• HealthShare
• HealthShare AP
• HealthShare Personal Community

Hello,

Is it possible to create a widget in the DeepSee 2 dashboards that will just contain a block of text?

Specifically text that isn't in any database, just free text that can be formatted.

Cheers,

Ben

Good Morning,   All replies are appreciated.

We have a development instance of cache that was installed and the person that installed and set it up is no longer here.  We have no id's that we have the passwords for.  I have brought the database up in emergency mode and I can get access thru the terminal using my emergency id but I do not know how to add  a user/password thru the terminal.  Can someone enlighten me or point me to documentation that I haven't found yet.

We tested REST Services  as described for Caché DocServer example and for requests using http protocol it works without problems. However when we use the https protocol for the same REST Service it is not available. Our infrastructure is as follows: Apache with openssl, which works on the other hand well for CSP with https. If we switch on the web gateway http trace facility we could see the request of CSP pages by https://. but again a request of a REST Service by https:// will not result in a entry in the tracer.

I am trying to write some code to check to see if a directory exists before creating a new directory.

When I do the following I am not getting a response, but the directory exists..

do ##class(%File).DirectoryExists("/ensemble/")

am I missing something?

I would like to integrate SQL into our ObjectScript routines in order to illustrate how SQL can be used to minimize development time. However, there are two questions I have.

1. How does one iterate through the results of a SELECT statement?
2. How does one access a Table in another namespace?

Hi,

is there a way to copy namespace mappings from another namespace to a new namespace programmatically with a command?

When using management portal there is an option to choose an existing namespace to copy the mappings from, I'm basically looking for the equivalent from command line / COS.

Thanks

Martin

InterSystems Global Summit 2017 registration is now open.

Register today - https://eventsforce.net/globalsummit2017.

The Solution Developers Conference @ Global Summit 2017 will be  Sept 10-13, 2017 in Palm Springs, CA.

You can see more about the hotel and conference rates at:
http://www.intersystems.com/who-we-are/events/intersystems-global-summit-2017/hotel-information-fees-logistics/

November 22, 2016 – Alert: Database Integrity on UNIX^® and Linux Platforms

InterSystems has corrected a defect that may, in rare circumstances, result in database degradation on UNIX and Linux platforms.

This defect affects Caché, Ensemble, and HealthShare distributions beginning with Caché version 2012.1. It is only a possible risk on UNIX and Linux platforms that are using asynchronous I/O for database writes. The following table specifies if asynchronous I/O is always on or optional for the affected platforms and releases:

I'm trying to use the standard TSQL DECLARE syntax but I get the following error:

[%msg: < IDENTIFIER expected, @ found^  DECLARE @>]

How do I declare a variable?  For instance:

Is it possible to have CSV export option on dashboards in the same way as excel export.

I currently have an MDX query/calculated measure as per the below:

 
[DaysOnListRange].[H1].[DaysOnListRange].&[Days 91 - 180]+ [DaysOnListRange].[H1].[DaysOnListRange].&[Days 181 - 365]+
[DaysOnListRange].[H1].[DaysOnListRange].&[Days 365+]

however it currently doesn't sum when there is a blank in the data.
How can I amend this query to include empty cells/only sum cells with data?

I've tried using nonempty but it doesn't appear to work in this context