I have table

CREATE TABLE nodes (
        name VARCHAR(50) NOT NULL, 
        parent VARCHAR(50), 
        PRIMARY KEY (name), 
        FOREIGN KEY(parent) REFERENCES nodes (name) ON UPDATE cascade
);

I put some data

INSERT INTO nodes (name, parent) VALUES ('n1', NULL);
INSERT INTO nodes (name, parent) VALUES ('n11', 'n1');
INSERT INTO nodes (name, parent) VALUES ('n12', 'n1');
INSERT INTO nodes (name, parent) VALUES ('n13', 'n1');

Let's delete all

DELETE FROM nodes;

Nope, no way.

SQL Error [124] [S1000]: [SQLCODE: <-124>:<FOREIGN KEY constraint failed referential check upon DELETE of row in referenced table>]
[Location: <ServerLoop>]
[%msg: <At least 1 Row exists in table 'SQLUser.nodes' which references key 'NODESPKey2' - Foreign Key Constraint 'NODESFKey3', Field(s) 'parent' failed on referential action of NO ACTION>]

0 7
0 311
Article
Dmitry Maslennikov · Aug 20, 2021 6m read
GitHub Codespaces with IRIS

Some time ago GitHub, has announced the new feature, GitHub Codespaces. It gives an ability to run VSCode in the browser, with almost the same power as it would run locally on your machine, but also with a power of clouds, so, you are able to choose the machine type with up to 32 CPU cores and 64 GB of RAM.

Looks impressive, is not it? But how it could help us, to work with projects driven by InterSystems IRIS? Let's have a look, how to configure it for us.

17 3
7 785

Hi Devs!

For me, one of the most painful things about ObjectScript is ##class(Class).Method() typing to call a class method in code or in a terminal. I even submitted an idea to simplify it in ObjectScript.

But! There is a new feature in VSCode ObjectScript that was just introduced to the plugin - Copy Invocation!

9 6
2 404
Announcement
Robert Cemper · Dec 19, 2022
Reviews on Open Exchange - #23

If one of your packages on OEX receives a review you get notified by OEX only own YOUR package.
The rating reflects the experience of the reviewer with the status found at the time of review.
It is kind of a snapshot and might have changed meanwhile.
Reviews by other members of the community are marked by * in the last column.

0 0
0 57

If you are using Python, you can use the built-in venv module to create a virtual environment. This module is the recommended way to create and manage virtual environments.

A virtual environment is a tool that helps to keep dependencies required by different projects separate by creating isolated python virtual environments for them. It solves the “Project X depends on version 1.x but, Project Y needs 4.x” dilemma, and keeps your global site-packages directory clean and manageable.

So if like me you work a lot with Python, you can use the venv module to create a virtual environment for your project. This will allow you to install packages without affecting the global Python installation.

You will find here two neat alias to create and activate a virtual environment.

Python aliases

alias venv="python3 -m venv .venv; source .venv/bin/activate"
alias irisvenv="python3 -m venv .venv; source .venv/bin/activate; pip install https://github.com/grongierisc/iris-embedded-python-wrapper/releases/download/v0.0.1/iris-0.0.1-py3-none-any.whl"

7 1
1 263

Hi,

If I test the Native api for Node.js from the documentation, I noticed (if I'm correct) all methods and calls are synchronous. By default due to the nature of Node.js, there is only one thread of execution and normally all JavaScript methods and all calls should be asynchronous and use either a callback function (the "old way") or promises or the async/await contruct to return their result, e.g.:

0 13
0 275

1. interoperability-embedded-python

This proof of concept aims to show how the iris interoperability framework can be use with embedded python.

1.1. Table of Contents

1.2. Example

import grongier.pex
import iris
import MyResponse

class MyBusinessOperation(grongier.pex.BusinessOperation):

    def OnInit(self):
        print("[Python] ...MyBusinessOperation:OnInit() is called")
        self.LOGINFO("Operation OnInit")
        return

    def OnTeardown(self):
        print("[Python] ...MyBusinessOperation:OnTeardown() is called")
        return

    def OnMessage(self, messageInput):
        if hasattr(messageInput,"_IsA"):
            if messageInput._IsA("Ens.StringRequest"):
                self.LOGINFO(f"[Python] ...This iris class is a Ens.StringRequest with this message {messageInput.StringValue}")
        self.LOGINFO("Operation OnMessage")
        response = MyResponse.MyResponse("...MyBusinessOperation:OnMessage() echos")
        return response

1.3. Regsiter a component

No ObjectScript code is needed.

8 6
2 1,284

I am trying to figure out how to loop through the EnsLib.LDAP.Message.Results to get all the attributes. From router I am passing EnsLib.LDAP.Messge.Search as the request param. Response is EnsLib.LDAP.Message.Results. I am invoking the EnsLib.LDAP.Messge.Search BO.

At the BP level, trying to figure out how to extract all the attributes for a EnsLib.LDAP.Message.results

0 2
0 85

I am trying to migrate our SQL Connections from HealthShare Health Connect 2018.1.3 to IRIS HealthShare Health Connect 2022.2 using the Data Export/Import Wizard through the Management Portal. I am able to export the data fine, but I am running into issues trying to Import it into 2022.2 using the Data Import Wizard. When I run through the steps it is not importing everything from the txt file I created from 2018.1.3. I would rather not have to rekey all the connections if possible.

Here is the Background Task Error Log

0 2
0 97
Question
Oleksandr Kyrylov · Dec 12, 2022
IRIS Runtime Environment

Hello community.

I have project on IRIS.

I am trying to make application deployable.

The Idea is to have 1 file that customer can download and run. For now I realize that whole intersysytems developer kit that includes Studio, terminal acts as runtime environment (Like Java has JDK).

Is it possible to wrap my project to 1 archive (Back to Java example .war or .jar) and run it on some application server (like Tomcat) without Studio etc..?

Thank you!

0 5
0 170

The following steps show you how to display a sample list of metrics available from the /api/monitor service.

In the last post, I gave an overview of the service that exposes IRIS metrics in Prometheus format. The post shows how to set up and run IRIS preview release 2019.4 in a container and then list the metrics.


This post assumes you have Docker installed. If not, go and do that now for your platform :)

15 10
4 888

In our latest episode of Data Points, I had a conversation with @Thomas Dyar about AI Link, which helps bridge the gap between data scientists and business analysts. Our conversation talks about how AI Link fits with IntegratedML and Adaptive Analytics, as well, as what new features are on the horizon for IntegratedML. Take a listen!

3 0
0 57

InterSystems announces another developer preview release, as part of the developer preview program for the 2022.3. Many updates and enhancements have been added in 2022.3 and there are also brand new capabilities, such as the new FHIR SQL Builder, improvements for Columnar Storage, and support to Oracle Linux 9. Some of these features or improvements may not be available in this current developer preview.

0 1
0 142

Introduction

InterSystems IRIS 2020.1 includes PEX (Production EXtension Framework) to facilitate the development of IRIS Interoperability productions with components written in Java or .NET.

Thanks to PEX, an integration developer with knowledge of Java or .NET can benefit from the power, scalability, and robustness of the InterSystems IRIS Interoperability framework and be productive in no time.

5 4
1 569

I have a table, with autoincremented id

CREATE TABLE users (
    id SERIAL NOT NULL,
    name VARCHAR(30) NOT NULL,
    PRIMARY KEY (id)
)

I can add a new item there with an explicit id

INSERT INTO users (id, name) VALUES (2, 'fred')

And while my id is autoincremented, I can omit it

INSERT INTO users (name) VALUES ('ed')

So, this time, I don't know the id, and I want to somehow get it.

I could do it with LAST_IDENTITY() function, but it just uses %RowID, and have no relation to the primary id

0 13
0 411

Updated Jan 19th, 2023.

Hi all,

I want to share a quick little method you can use to enable ssl with a self signed certificate on your local development instance of IRIS/HealthShare. This enables you to test https-specific features such as OAuth without a huge lift.

1. Install OpenSSL

Windows     : Download from https://www.openssl.org or other built OpenSSL Binary. 

Debian Linux: $ sudo apt-get -y install openssl

RHEL        : $ sudo yum install openssl
9 6
4 1,205