#Caché

I experience this constantly with Cache SQL.  Especially when querying the ATNA log.

SELECT TOP 400000 * FROM HS_IHE_ATNA_Repository.Aggregation ORDER BY ID DESC

That took 12 seconds.  I then upped the number to 500,000 and it took 185 seconds.

Shouldn't the execution time scale proportionately?

If I run the 500,00 query again it takes 2.4 seconds.

How to parse a URL in Caché:

Let's pretend you are working on a project where you may be retrieving a URL for some purpose and you have the need to be easily able to parse apart that URL to get the various components that make up the URL.

Here's how to do that:

Note:  This example assumes you have a variable named sURL that contains some url (i.e. http://www.intersys.com/main.csp?QUERY=abc#anchor) and you will be creating an array of the URL component pieces, where the array will be named aComponents.

In your class/routine, add the following code:

Do ##class(%Net.URLParser).Parse(sURL,.

I have to connect to an external database and I'd like to use the JDBC SQL Gateway.

I followed this tutorial [1] to create a JDBC SQL Gateway and after configured it works as expected, but I don't know

how use this connection into source code. Maybe these other tutorial is related [2] and [3].

[1] http://docs.intersystems.com/latest/csp/docbook/DocBook.UI.Page.cls?KEY…

[2] https://community.intersystems.com/product-documentation/intersystems-p…

[3] http://docs.intersystems.com/latest/csp/documatic/%25CSP.

Hi

I have been working on changing a web application from using %FileBinaryStream to storing and serving the file content from a %Stream.GlobalBinary property, stored in a new database.  I have managed to migrate the data across, and have also been able to redirect the stream so that it is being served through the web link.  However, the previous method set attributes on the File stream to have the stream be rendered as the original file type through MIME, using this code

do stream.SetAttribute("ContentDisposition","inline; filename="_filecvt)

This method is not supported by %Stream.

Hi, There

How to use open text file. I have a one file. the file is original file from excels file. After later convert to CSV file.

some cells has include cr+lf  control code. If i open and use from cache. reding time,Cache was wrong line feed point.

how do i edit my source code?

==============================================

s infile="c:\csvfile.csv"

o infile:"r"

1 u infile r line i $zeof<0 c infile q

   f i=1:1:10 s wd(i)=$p(line,",",i)

g 1

==============================================

Difference between function , routine and procedure in object script.

Background

Caché 2016.1 introduced some very powerful JSON features.  Unfortunately, the syntax used in the 2016.1 release is going to be changed in the 2016.2 release to bring it closer to Caché ObjectScript syntax.  This will mean that code that works in 2016.1 may not be forwards compatible.   See this announcement and this article for more details about the changes.

I can't able to access the management portal in tcp the cache is run on different port no 57812 plz i want immediate rply soon

Hi All,

    SPOOLER functionality is support in Cache 16?
    Previously we are using cache 5,Now we upgraded cache(cache 16).
    Is any changes required in SPOOLER set-up (Cache 16)?    
    
Thanks,
Sansa    

This sample class will add parameter DSINTERVAL to each class containing the parameter DSTIME

To execute it from a Terminal :

SAMPLES>d ##class(adm.param).add(,,1)
[SAMPLES] parameter DSINTERVAL=5 added to class DeepSee.Study.CityRainfall (via adm.param)
[SAMPLES] parameter DSINTERVAL=5 added to class HoleFoods.Transaction (via adm.param)
[SAMPLES] parameter DSINTERVAL=5 added to class News.DeepSee.NewsArticle (via adm.param)
DSINTERVAL parameter was added to 3 classes

Class adm.param [ Abstract ]
{

/// this class will add DSINTERVAL parameter to each class containing DSTIME
/// in order to synchronize a cube that is based on a source table on a mirror system
/// see: http://docs.intersystems.com/latest/csp/docbook/DocBook.UI.Page.cls?KEY=D2IMP_ch_current#D2IMP_current_dstime_enabling
ClassMethod add(name As %String = "DSINTERVAL", value As %String = "5", verbose As %Boolean = 0) As %Status
{
    set sc = $$$OK
    try {
        set statement = ##class(%SQL.Statement).%New()
        // %Dictionary classes are useful to select classes based on their content
        // here we use %Dictionary.ParameterDefinition class which contains all the parameters defined in all classes
        // then we will open the parent class to add the missing parameter
        set query="SELECT a.parent "
                 _"FROM %Dictionary.ParameterDefinition a "
                 _"WHERE a.name='DSTIME' "
                 _"AND substr(a.parent,1,1)<>'%' "
                 _"AND NOT EXISTS (SELECT null "
                 _"FROM %Dictionary.ParameterDefinition b "
                 _"WHERE b.name='"_name_"' and b.parent=a.parent)"
        set sc = statement.%Prepare(query)
        quit:$$$ISERR(sc)
        set classes="",nb=0
        set rs = statement.%Execute()
        while (rs.%Next(.sc)) {
            quit:$$$ISERR(sc)
            if (rs.parent '="") {
                // opening of the parent class 
                set class = ##class(%Dictionary.ClassDefinition).%OpenId(rs.parent)
                if $IsObject(class) {
                    // creating the new parameter
                    set param=##class(%Dictionary.ParameterDefinition).%New()
                    set param.Name=name
                    set param.Default=value
                    // adding the parameter to the parent class
                    do class.Parameters.Insert(param)
                    set sc=class.%Save()
                    // if parent class is successfully saved set the following message
                    set:sc msg="["_$namespace_"] parameter "_name_"="_value_" added to class "_rs.parent_" (via "_..%ClassName(1)_")",severity=0
                    // if parent class is not saved set the following message
                    set:'sc msg="["_$namespace_"] ERROR while saving "_rs.parent_" after having added the parameter "_name_"="_value_" (via "_..%ClassName(1)_") :"_$system.Status.GetErrorText(sc),severity=1
                    // if verbose=1 write the message to the terminal
                    write:verbose msg,!
                    // write the message to cconsole.log
                    do ##class(%SYS.System).WriteToConsoleLog(msg,verbose,severity)
                    // add the class name to compile 
                    set classes(rs.parent)="",nb=$increment(nb)
                }
            }
        }
        set:nb=0 msg=name_" parameter was not added to any class"
        set:nb=1 msg=name_" parameter was added to "_nb_" class"
        set:nb>1 msg=name_" parameter was added to "_nb_" classes"
        write:verbose msg,!
        // compile all modified classes 
        if nb>0 { 
            set sc=$system.OBJ.Compile(.classes,"ck"_$select(verbose:"d",1:"-d"))
            set:sc msg="["_$namespace_"] modified "_$select(nb=1:"class",1:"classes")_" successfully compiled",severity=0
            set:'sc msg="["_$namespace_"] ERROR while compiling classes : "_$system.Status.GetErrorText(sc),severity=1
            do ##class(%SYS.System).WriteToConsoleLog(msg,verbose,severity)
            write:verbose msg,!
        }    
    }
    catch(ex) {
        set sc = ex.AsStatus()
        set msg="["_$namespace_"] error while executing "_..%ClassName(1)_":add("_name_","_value_") : "_ex.DisplayString(),severity=1
        write:verbose msg,!
        do ##class(%SYS.System).WriteToConsoleLog(msg,1,severity)
    }
    return sc
}

}

Good Morning and thanks in advance for all replies.  I have created a PowerShell script for backing up CACHE and all related files to be run on a nightly basis.  My script works as long as the Unknownuser has %all access which is not acceptable in our production environment.  I have tried every format I can thank of to get the script to use a specific id with no luck.  How can I get this command to run under a specific id? 

..\bin\cache -s. -U%SYS "##Class(Backup.General).ExternalFreeze() <d:\backup\login.scr" 

The file just has

userid`r`n
​password`r`n

`r

NewBie's Corner Session 27 Traversing A Global with $Order Part 1

Welcome to NewBie's Corner, a weekly or biweekly post covering basic Caché Material.

Traversing A Global

Perhaps the most difficult concept in Caché/MUMPS is its Global Structure. This session and several that follow it deals with the Global Structure. However, just presenting the material will not guarantee your understanding of it. You must experiment with the data and concepts that are presented.

In this session, we are going to create a small Global of three levels deep, and then show the code to Traverse the Global.

NewBie's Corner Session 28 Various Methods to Traverse a Global

Welcome to NewBie's Corner, a weekly or biweekly post covering basic Caché Material.

Judging from the number of responses to Session 27 Traversing A Global, developers are passionate about their methods. I am not here to judge the merit of the various methods.

Over the next few pages I will demonstrate a number of methods to Traverse a Global. If you don't already have a favorite they may help you pick one.

I will repeat the method from Session 27 just to have all methods in one post.

Hello, guys.

I need to copy the text from one stream to another filestream and save it. I am using  

do fileStream.CopyFromAndSave(rtn.Code)

However, if "rtn" stream contains Russian characters I get something like "???". Is there any way to convert stream to Unicode?  Something like $zc(str, "O", "UTF8") for streams.

Hi all,

This is a real long shot, but does anyone have experience integrating MS wsHttpBinding with a Cache application?

Link 

I ask because my project had some initial design discussions for new web service communication and this specification was mentioned. 

Thanks.

Hello, guys. 

I found one interesting moment in Cache Object Script. It doesn't have(or at least I didn't find) trimming function. By trimming I mean if a string has some whitespaces/tabs/carriage returns from very beginning or/and from very right, this function removes them. 

  I have found several workaround ways. 

1. Using Cache Basic

ClassMethod TrimCacheBasic(str As 

2. Using SQL

ClassMethod TrimSQL(str As %String) As %String
{
	set tStatement = ##class(%SQL.Statement).%New()
	set tSC = tStatement.%Prepare("SELECT TRIM(?)")
	set rset = tStatement.%Execute(str)
	do rset.%Next()
	return rset.%GetData(1)
}

I'm following the tutorial here.  When I try to call the default Test() method I get the following error:

An error occurred with the CSP application and has been logged to system error log (^ERRORS)

I found this document which says I need to make the "Web Application" accessible by running a couple commands.  I'm not even sure I created a Web Application.  Regardless, I tried a few variants but still get the same error.

Here is the URL for the Service Catalog: /csp/healthshare/mhclib/Custom.MHC.Scott.ServiceTest.

Checking if Directory or File Exists:

Outlined below is an example of how to check if a directory exists:

Set directoryName="c:\temp\nosuchdir"

/* Check for existence of a directory - Return Value:  0 - directory does not exist;  1 - directory does exist  */

Set directoryExists=##class(%File).DirectoryExists(directoryName)

If ('directoryExists)  // do the processing for when a directory does not exist

Outlined below is an example of how to check if a file exists:

Set fileName="a_test_filename.txt"

/* Check for existence of a file- Return Value:  0 - filename does not exist;  1 - filename does exist  */

Set fileExists=##class(%File).Exists(fileName)

If ('fileExists)  // do the processing for when a filename does not exist

The one question that some of you might have is:  

How do I change my login information for Cache Studio if I clicked the checkbox to automatically save my login info so I do not have to enter my username/password every time I open Studio?
 

Well.

Hi all,

We're creating a series of RESTful APIs that output data from a Cache database (made up of global storage that we've mapped to classes). I'm running into some problems with object-to-JSON conversions when relationships are involved.

Click here to view our OAuth 2.0 Overview

InterSystems created this video as a high-level overview of OAuth 2.0 technology, geared toward developers looking to learn the basics of OAuth 2.0.  It will teach you how OAuth 2.0 works, what roles are involved, what benefits it can provide, and how InterSystems Caché can be used with this technology.

I have a class with a string property with DISPLAYLIST and VALUELIST parameters specified.

When I query this class via ODBC I receive logical value as it is and not a display value.

Is there any way (without stored procedure) to get display value?

I need to do an UPDATE via SQL and I would like the statement to return the `ID` column of each row that is updated.  MS SQL has an "OUTPUT" statement, but I don't see anything similar in Cache.  Is there a way to do this?

Have you tried $Translate for date conversion?

USER>write $Translate("Dd.Mm.WwYy","WwYy-Mm-Dd","2015-08-02")

02.08.2015

Stolen from Russian forum and Alexander Koblov.

Is the possible for Multiple Streams using in single method?

I created on program . How to convert this application in .exe format.

NewBie's Corner Session 29 Documentation on the Caché/MUMPS Global Structure

Welcome to NewBie's Corner, a weekly or biweekly post covering basic Caché Material.

This post contains several links to very good documentation of the Caché Globals Structure.

Like I said, "Perhaps the most difficult concept in Caché/MUMPS is its Global Structure."

universalNoSQL.pdf - http://mgateway.com/docs/universalNoSQL.pdf

by Rob Tweed and George James

Extreme Database programming with MUMPS Globals

http://gradvs1.mgateway.com/download/extreme1.pdf

 Windows 7 and some other Microsoft Operating Systems can shutdown too fast for large applications, such as a Cache instance with a large amount of data and changes, to close gracefully. This results in the instance being forced down by the OS and so causing problems on the next start up.

To solve this we can change the OS shutdown timeout values to give Cache more time to close gracefully. We do this by editing some settings in the Registry.

1.Click Start (on Win 7) and type “regedit” and make sure you run registry editor as administrator.

2.

We're developing Ensemble PoC and one day our frontend developer (who doesn't have Ensemble production running) said that Populate just doesn't cut it and he needs to see the real data. He needed only one object, but the problem was - it's a big object. Still, I checked ids of everything related and wrote this command (parts omitted, but you get the idea):

w
$SYSTEM.OBJ.Export("project.model.contract.ContractD(6456).gbl,project.model.coA7F9.ObjectAddressD(6741).gbl,project.model.meter.DeviceD(23398).gbl,project.model.StatusHistoryD(7977).gbl,project.model.StatusHistoryD(48006).gbl,project.model.StatusHistoryD(83906).gbl","C:\Users\eduard\Desktop\export.xml")