All time

For each instance of an XML-enabled class I want to control whether a property is projected as an empty element or not projected at all. With string properties, I can set the value as $c(0) for an empty element, or an empty string for no projection. But it looks like this isn't consistent for properties with type %Boolean or %Integer. With booleans $c(0) gets projected as "false". With integers $c(0) stays as a zero-width space in the XML output (which gives me a SAX parser error if I try to read it).

Is there a way to do this that works for all datatype properties?

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InterSystems Developer Community is a community of 26,038 amazing developers
We're a place where InterSystems IRIS programmers learn and share, stay up-to-date, grow together and have fun!

Does anyone have experience with installing the Arbiter Container using Podman instead of Docker in a Red Hat environment? I was able to pull down the docker image, but unsure what are the next steps as I am confused on how to start the container using Podman and ensure the parameters are set appropriately? Does anyone have the steps that I should take? Should I go through the WRC? Does the WRC have experience using Podman?

Or should I just install the ISC Agent instead of using the Container?

Please and thanks,

Scott Roth

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Hi Community...I am trying figure this out any help appreciated. Thanks in advance

The service is a file passthrough that picks up a PDF and then uses the BPL code below to create the rest wrapper and sends the stream data. I am not grabbing the stream from the inbound correctly, "request.Stream" or "request.StreamFC" always produces the following error.

Here is what is sent and returned in the message..

request:

<Stream>

15@%Library.FileCharacterStream

</Stream>

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Question
· Aug 14, 2019
upload file to FTP

Hi

I am trying to upload a file to a ftp site using following code.
Problem is file is getting upload but there is no data. Can you plz advise where I am getting lost.
Also my files are with big data, 2+ GB, as far as know this ftp upload will not effect on my cache.dat size. Plz correct if my understanding is not correct.

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Question
· Nov 6, 2017
Logging

Hello, evrybody, I'm writing one project using CSP("OnPreHTTP"), and also REST angular. At the beginning I wrote purely on csp, then I decided to use angular for the flexibility of the client part. Now I can not design logging, I created a table App.Log with properties

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Hi All,

I am new to this technology and I have installed the trial version of cache 2016.1 with Normal security.

I was trying to develop the sample cinema application and mean while when I tried to view the csp webpage, it opens the browser and ask for login after logging in it shows Service Unavailable error instead of preview of webpage.

Could you guys suggest an answer to resolve this issue.

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Hi, I am new to IRIS and We are planning to setup a CI pipeline on AWS VM deploying the iris data platform container. I am trying to find out which folders needs to be inside the source control and where (exact folder) the updated code needs to be pulled in the container. I would be much obliged if anyone cant point the CI CD related documentation.

Thanks,
Raj

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This is a quick note on what happens when, on your CSP page, you call a cache script which returns a %Boolean and store that value in a javascript variable.

When you call a script with language="cache" and returntype="%Boolean" from a javascript script, the return value is interpreted as a string, not as a boolean.

Here's an example:

A cache script that returns (in theory) a "false" value:

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This code snippet provides a ZEN page that downloads a stream from its database directly:


/// We assume that you have stored your data within this schema:
/// MyApp.Model.Storage: Filename,FileSize,Content,ContentType
Class zen.downloadStream Extends (%ZEN.Component.page,%CSP.StreamServer)
{
 
    /// Wrapper to get the id of the download, we assume that the id is passed to this zen page
    /// as a URI parameter, i.e.: MyApp.Downloads.cls?OID=1234
    ClassMethod GetId()
    {
        Quit $Get(%request.Data("OID",1))
    }
     
    /// Set the appropriate header for the file.
    ClassMethod OnPreHTTP() As %Boolean
    {
        Set tId = ..GetId()
     
        If ##Class(MyApp.Model.Storage).%ExistsId(tId) {
            Set tStream = ##Class(MyApp.Model.Storage).%OpenId(tId)
            // You could "guess" the content type by its file extension
            // or you can store it (before) in the database separately (like in this example).
            // Set Extension = $Piece(tStream.Filename,".",$Length(tStream.Filename,"."))
            // Set ContentType = ..FileClassify(Extension)
     
            Set %response.ContentType = tStream.ContentType
            Do %response.SetHeader("content-disposition","attachment; filename="_tStream.Filename)
            Do %response.SetHeader("Content-Length",tStream.FileSize)
        }
        Else {
            Set %response.Status="404 File Not Found"
            Quit 0
        }
        Quit $$$OK
    }
     
    ClassMethod OnPage() As %Status
    {
        Set Download = ##Class(MyApp.Model.Storage).%OpenId(..GetId())
        Do Download.Content.OutputToDevice()
        Quit $$$OK
    }
 
}

Link to code on GitHub

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A client stated to me that they are trying to eliminate SMTP servers from their network and want all email to be sent through their Microsoft Exchange Server. Admittedly I am not very knowledgable of the workings of Exchange Server.

Are there customers sending email notifications through Exchange Server? How is this accomplished? Does Exchange Server act as a SMTP server allowing use of the Email adapter or is there some other mechanism that must be used to communicate with a Microsoft Exchange Server?

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Announcement
· Mar 26, 2021
Jobs on Developer Community

Hi Developers!

As you may know, InterSystems Developer Community can help you to find a job. There are two options for developers: find a job for yourself or hire staff for your company. Just post an ad on the InterSystems Developer Community and find what you are looking for!

How does it work? Check the details below:

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Question
· Jan 7, 2021
How to audit data change?

Hi guys,

In our clients environment, multiple sources will connect to one DB (all through JDBC connections) and perform various operations. Sometimes they found some data was deleted without reason. Thus they want some feature like SQL Server Database Audit Specifications that can log who at what time with which IP deleted data in a specific DB.

I've checked IRIS Audit but I didn't find feature about that . How can we audit and log delete of a known DB? The deletions might be performed by delete statament or truncate table stattement.

Thanks.

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Question
· Apr 22, 2020
FTP adapter

Hi community,

I am now working with an ftp adapter. I have no problem connecting to the FTP server, but there are problems with interacting with files. Has anyone had any experience with an FTP adapter, such as getting/modifying/deleting files?

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Question
· Nov 8, 2017
Node.js version

Does anyone know where to find a cache.node that works with Cache version 2016.1.1.108.0? I am currently getting this:

Error: Unable to load shared library C:\InterSystems\TryCache\bin\cache.node''

I am using Windows 7 Pro + SP1.

Thanks!

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NewBie's Corner Session: 9 Documentation and books

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

To access your documentation:

Assuming you have installed Caché, (see NewBie's Corner, Session:1),

Click on the InterSystems cube in the Windows system tray, then choose Documentation.

Or – another method you can use to access your documentation:

Assuming you have installed Caché, (see NewBie's Corner, Session:1),

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Hi,

posted some weeks ago in the "old" ZEN Google Group, maybe someone here can help to understand how to properly setting up a csp applications and contributing from the build-in caché security mechanism.

I´ve created a webapplication and wan´t to add further security to it using the smp. But... first things first.

I have two Databases let´s say DB1-LOGIN and DB2-Application. Each of this DBs has a resource assigned. DB1-LOGIN has a resource %DB1-LOGIN which has a public permission of 'read'. DB2 has a resource as well %DB2-Application with no public access.

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Question
· Apr 20, 2023
Uninstalling Ensemble

On a developer's laptop, having had two or three Ensemble installs with different settings/config changes made, and encountering unexplained errors compiling classes, wanting to scrub as much of the previous installs off the machine before doing any fresh installation... But can't find clear documentation on doing a complete uninstall!

Have stopped the server.

Am I safe to remove C:\InterSystems\Ensemble (for the instance installed into that folder)?

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