Question Ruslan K · Jul 23, 2017

There is method:

$System.OBJ.New( ClassName As  %String = "" )

If class with name ClassName exists - everything is OK.

But, when class does not exist, there is error - <CLASS DOES NOT EXIST>

How can I check before calling $System.OBJ.New() if class witn name ClassName exists?

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Question Scott Roth · Jul 20, 2017

I am currently working on a issue with WRC on one of my Inbound SQL Adapters not returning all the records it should be. If I looked at the count of the records in Ensemble and compare it to that of a Microsoft SQL View, Ensemble seems to be off by a few records here and there. I am using a full dynamic select statement in my settings of the adapter.

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Question Brian Shingle · Aug 7, 2017

Greetings!

I'm new to Zen reports and I'm wondering if what I'm trying to do is possible.  I have a classmethod  that accepts three parameters to generate an xml file from a global.    I've set up my Report Definition to call the ClassMethod that generates the .xml file; however, I'm trying to figure out how to pass the parameters to that ClassMethod from the Report Definition.  The example in the documentation shows parameter passing using SQL (which I'm not using), so I'm curious if this will work.  

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Question Eduard Lebedyuk · Jul 26, 2017

I'm trying to create asynchronous Ensemble service/operation pair for SOAP passthrough.

General configuration:

  • Ensemble Service receives a message and immediately returns an answer to a caller (message received or some error)
  • Ensemble Service asynchronously calls Business Operation
  • Business Operation  does guaranteed message delivery, etc.

Is it a viable approach?

Any tips? Ideas? Caveats? Code?

Seems like I can sublass EnsLib.SOAP.GenericService and change Sync to ASync (and provide a default reply immediately).

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Question stephen mayo · Aug 10, 2017

Hi,

I am new to Cache' MV but have extensive experience with other Pick flavors especially Unidata. 

I need to determine the impact of adding several indexes to a large file with over 51,000,000 records. 

On other systems, I could use FILE.STAT, ANALYZE.FILE and shell to the OS to determine how large the index file was. 

None of those seem to be available in Cache' MV. Shelling to the OS just tells me the size of CACHE.DAT.

What is the best way to determine what the disk impact would be if I added an index (CREATE-INDEX) to a file?

TIA,

Steve

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Question Sébastien Demoustiez · Jul 27, 2017

Hello,

I have a DB server (ser-app-db) where cache is installed as server.

I have a Web server (ser-app-w) where cache is installed as web server and configured as CSP gateway.

I followed the configuration guide (https://docs.intersystems.com/latest/csp/docbook/DocBook.UI.Page.cls?KE…) and ser-app-w perfectly display the CSP and CLS pages.

But that's not working for my REST service, for exemple with the REST sample:

http://ser-app-db/csp/samples/docserver/request(GET): work and show the request

http://ser-app-w/csp/samples/docserver/request(GET): return a 404.

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Question Marek Bernád · Aug 11, 2017

Good day,

I need to find out if it is possible somehow to receive actual linux TIMESTAMP for example with $NOW() or other functions.
I was trying to recalculate it with $NOW() function, but without success. I would like to simulate Redis TIME command in COS.


My tryings:

USER > set time = $NOW()

USER > w (($PIECE(time,",",1)*86399) + $PIECE(time,",",2))
5573319043.403186

But in Redis it is:

> time
​1) 1502471158

On web page: http://try.redis.io/
type "time" + enter. And it will results as short documentation says: https://redis.io/commands/time

And this behavior I would like to implement in COS.

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Question Ruslan K · Aug 9, 2017

I have a tablePane. TablePane can have one, or two, or three parameters. It depends on some conditions.

At first I add all three parameters to tablePane.

set p1 = ##class(%ZEN.Auxiliary.parameter).%New()
set p1 .id = ..id1
do table.parameters.Insert(p1 )
do %page.%AddComponent(p1 )

set p2 = ##class(%ZEN.Auxiliary.parameter).%New()
set p2 .id = ..id2
do table.parameters.Insert(p2 )
do %page.%AddComponent(p2 )

set p3 = ##class(%ZEN.Auxiliary.parameter).%New()
set p3 .id = ..id3
do table.parameters.Insert(p3 )
do %page.%AddComponent(p3 )

Then through javascript I set parameters values and query

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Discussion Sebastian Mueller · Aug 8, 2017

I understand this is a rather broad topic (and at times involves religious sentiments) yet I would like to look at it from the Caché perspective:

  • Do you use an issue tracking / collaboration system? If so which one. Any you would recommend or immediately dismiss based on personal experience?
  • How do you keep track of large code bases? Thousdands of folders named backup1, backups2, ..., SVN, git?
  • Do you have a development server to which you commit and test features there, or do you rather run a local copy of caché and implement features locally first, then push to the
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Question Mike Kadow · Aug 10, 2017

Hi, I am trying to understand the transformational methods.

  • LogicalToDisplay()
  • LogicalToOdbc()
  • OdbcToLogical()
  • DisplayToDisplay()

I have created a small class with the only property of List as %List, see below.

Class LastName.Demo2 Extends %Persistent
{
Property List As %List;

}
Then I entered the following commands in the Terminal

Set Oref=##class(LastName.Demo2).%New()

FOR I=1:1:5 S $LI(List,I)="Value="_I

Set Oref.List=List

WRITE Oref.ListLogicalToDisplay(Oref.List)

^

<METHOD DOES NOT EXIST> *ListLogicalToDisplay,LastName.Demo2

zw Oref

Oref=<OBJECT REFERENCE>[2@LastName.

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Question Mike Kadow · Aug 9, 2017

The data type %Char or %Library.Char

The description says it is a fixed length character field.

How do I set the fixed length?

Or by just setting %Char to something, does that automatically define its length?

Are the parameters MINLEN, MAXLEN involved? Or are these the way I set the fixed length?

Any help with this?

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Article Robert Cemper · Aug 8, 2017 1m read

In a previous exercise, I was able to show the power of Caché.
A medium-designed set of interdependent tables with some GB of data.
URLs cross reference over some million pages resulting in ~3 billion records

Competition was between

  • Caché
  • PostgreSQL
  • MySQL

Criteria were Speed + Storage consumption
I composed  a customized loader fed over a "raw" TCP connection
Mapping the "objects" into the final table by directly writing to Global Storage.

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Question Jon Jensen · Mar 20, 2017

Are these search filter options supposed  to  be exposed?  They seem like they are some sort of system description that should not be exposed to the general public?

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Question Kevin Furze · Jul 31, 2017

suggestions to try to make the searching of the community better, more relevent

I've been searching within the community for an article about troubleshoting SQL's working out how efficient they are, and how to look inside the system for other SLQ's that we used but may be inefficient,  (still haven't found it, and getting frustrated)

In this instance, after many guesses, I tried

sql "how to" analyze plan tutorial efficiency inefficient troubleshooting highest

I know I've seen the article about this very subject, but it's getting darned hard to find things in the community.

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Question Ondřej Hoferek · Jun 15, 2017

Searching the developer community for the string "node.js" leads to navigating to the following URL: https://community.intersystems.com/search/all/node.js for which the browser receives the "404 NOT FOUND" error response. The behavior is consistent for any search string ending on ".js" or ".css" (not sure whether there any other suffixes affected). Please fix the DC to handle such search strings appropriately.

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Announcement Evgeny Shvarov · Aug 8, 2017

Hi, Community!

I'm pleased to announce that we deployed a new release of Developer Community.

This release comes with improved Search.

The updated search feature introduces full-text scan, auto complete for the key words, filters on articles, questions, comments, members and works faster.

Here is the small video on how it works.

Also, we fixed a few bugs and made DC faster.

Hope you like it! 

Stay tuned for the next release and introduce your issues here in comments or and enhancement requests and other issues in the DC Feedback group!

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