#Caché

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

Documentation.

Article
· Oct 7, 2016 4m read
Forwarding Requests in a REST Service

One useful feature of our REST framework is the ability for a dispatch class to identify request prefixes and forward them to another dispatch class. This approach of modularizing your URL map will improve code readability, enable you to easily maintain separate versions of an interface, and provide a means to protect API calls that only certain users will be allowed to access.

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Hello,

I am trying to create a HL7 message (REF_I12 message) using variables extracted from a Dynamic Object and need some advice about segment creation issues that I am having. Some background info: I receive a JSON response from an API call and used %FromJSON to convert the response to an Dynamic Object. Some of the items in the response are repeated such as NOKName, NOKrelationship.

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Question
· Mar 3, 2017
zen report

Hi, all

I have the following problem in generating a PDF report in ZEN, which has many items, a general total of approximately 30,000 items, but gives an error, I can generate a report with a maximum of 8,000 items, which may be wrong.

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I noticed when creating Record Map's within Ensemble that it is creating a Persistent cache table as it translates the file and puts it into the Record Map data structure.

I was wondering if there was a way to add a column to the cache table that is Hidden from the record map, but is a calculated date value on when that record was inserted?

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Question
· Oct 8, 2020
Report Render Server Error

Hi everyone, i'm using a render server to make pdf output with zen report and everything was fine till recently i've been getting this error message and i have no idea what it means, i'd be very thankfull if someone could help or got into the same situation.

Error message:

ERROR #5001: net.sf.saxon.trans.XPathException: org.apache.fop.fo.ValidationException: "fo:table-body" is missing child elements.
Required content model: marker* (table-row+|table-cell+) (See position 817:-1)

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Hi

I would like to create a new message of a particular type and append various segments programmatically. I have started with the following snippet. What I am currently finding difficult is to define a segment of a particular segment structure. I would like to append a pid segment of 2.3.1 to my message. I know I could you the importfromstring but I wanted to know whether there was a better way of achieving this.

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Article
· Oct 6, 2020 2m read
An overview of npm-iris

What is npm-iris?

N.P.M stands for "No Project Mess."

N.P.M. is a Project & Task Management app that uses InterSystems IRIS and Bootstrap 4.

No Project Mess is created to help developers and small business companies to reduce complexity in their daily problems, with a simple and intuitive projects and tasks management software.

It offers different views for your tasks, from a spreadsheet, kanban, calendar, or even Gantt!

Open Exchange app
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If a global node contains special characters, (eg : a line returns), it will be displayed like this in Portal ("System > Globals > View Global Data" panel) :

^A(1) = "this is"_$c(13,10)_"a test"

I would like to export global data to a txt file using a similar format.

I already wrote the main code (that loops on all nodes and dump them to file), the problem is how to handle special characters.
For the moment I replace them manually one by one. It works, but it's far from perfect :

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Question
· Oct 1, 2020
Terminal error

Hello!

I have installed windows 10 and cache 2018.1.0.184.0

I run terminal not from cache cube but through localDemon.exe (for report outputting from my programs to excel).

All worked fine but after some time error occured "Cannot load supporting modules" (in attached file) and localDemon.exe is not launching.

But terminal from cache cube is still launching without problems (but from it reports are not working, localDemon.exe is required)

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So, one day you're working away at WidgetsDirect, the leading supplier of widget and widget accessories, when your boss asks you to develop the new customer facing portal to allow the client base to access the next generation of Widgets..... and he wants you to use Angular 1.x to read into the department's Caché server.

There's only one problem: You've never used Angular, and don't know how to make it talk to Caché.

This guide is going to walk through the process of setting up a full Angular stack which communicates with a Caché backend using JSON over REST.

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Question
· Oct 1, 2020
LDAPS - InterSystems cache

Hi All,

I hope all are good.

I would like to know that whether InterSystems will support LDAPS or not.
I have idea about LDAP but not about LDAPS.
Please suggest me If anyone has any documents or links.

Thanks and Regards,
Gunwant

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Discussion
· Sep 28, 2020
%Status usage in ObjectScript

Hi developers!

Want to discuss with you the case of %Status.

If you familiar with ObjectScript you know what is it. I'd love to hear the history of the case why it had appeared in ObjectScript but it turned out that almost every system/library classmethods return %Status and there is a whole set of tools to deal with it.

What is does it gives you the responsibility to check the value or %Status of every system method you call.

E.g. if you save the data of the persistent class, you should never call like this:

do obj.%Save()

you need to call:

set sc=obj.%Save()

if $$$ISERR(sc) do // something or quit.

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I've run into an issue where job IDs are being retained through multiple calls. My team is doing a rewrite of our system that allows VB6 apps and web apps to directly interact with our Cache databases.

The new process has those applications calling into a WebAPI which then calls into the routines.

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Discussion
· Sep 21, 2020
Unit Testing Naming Convention

Hi Developers!

Recently we discussed the naming convention on packages we deploy and even made some choices.

Here I want to have a conversation on the naming convention for unit tests.

Of course, we wish every good library has unit tests. Here is the documentation and some good articles(one, two, three) regarding it on the Developer Community.

Let's decide on the naming of UnitTests packages?

The suggestion is that unit test classes will all start with the UnitTest package name.

E.g. if your library's class name is:

johndoe.lib.class

The related unit test class will be:

UnitTest.johndoe.lib.class

What about folders?

The suggestion is that unit test classes will live separately from source classes, e.g. in /tests directory.

Here is the example of a repository with unit tests that are named and placed according to the proposal.

What do you think?

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Hi:

I have the following method in a buisness operation that works on localhost but not on our server . I think it's how the firewall is set up but i was wondering if there is a known way around this. It can't correlate XML as it returns a "The browser did not send any authentication information" error. I tried adding in username and password to http request to no avail. We could do a c# proxy on a server but i'm wondering if there is a known way to fix this error within intersystems. As a developer we don't have too much control over our Intersystems TIE server.

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Whenever the Windows SNMP Service restarts, the snmpdbg log says the following.

13:08:59 :Attempting initial TCP connection(s) with 1 Cache instances ...
13:08:59 :Get connection with ENSEMBLE on port 1972
13:08:59 :Connection refused on port 1972, check if Cache instance ENSEMBLE is started.
13:08:59 :Cache iscsnmp.dll initialized for 1 configs

Ensemble and all productions are running. I've set up Caché SNMP agent on many other servers in our company and those are working fine. However this one server won't budge.

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Question
· Jul 20, 2020
IDX Groupcast system from Cache'

Hello,

I posted in another thread a short while back regarding accessing (extracting) data from the Cache' database.

I am now told that the (healthcare) system is IDX Groupcast. The kick off project has not started yet but I would like to do some 'homework' and see the data model. I couldn't find too much about this in a Google search. Would anyone have a link or advise for doing some preliminaries? I am already versed in SQL server.

Thanks,

John Lisa

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