Java is a general-purpose computer-programming language that is concurrent, class-based, object-oriented, and specifically designed to have as few implementation dependencies as possible.
1 Introduction
In environments that use InterSystems IRIS, globals are the physical foundation of data storage. Although system queries and administrative tools exist for metric inspection, global growth analysis is usually reactive: the problem is generally only noticed when there is disk pressure or performance impact.
Hello everyone,
I’m trying to find a way to manage globals from our Java application. We have two separate features:
Managing tables normally using SQL
Managing globals, since some globals exist without class or table definitions
Cache version : Cache for UNIX (Red Hat Enterprise Linux for x86-64) 2016.1.1 (Build 108U_SU), Thu Jul 7 2016 09:39:04 EDT
I tried to retrieve the globals tree, update node values, and append nodes using SQL by calling stored procedures, but I couldn’t find any procedures for adding, updating, or deleting nodes.
I also tried using cacheextreme.
Hello Community,
I am facing a JDBC connection issue after migrating from Caché 2016 to Caché 2018.1. When I attempt to connect using the following connection settings:
CACHE_DATASOURCE_URL=jdbc:Cache://localhost:1972/TEST
CACHE_DB_USERNAME=test
CACHE_DB_PASSWORD=test
I consistently receive the following error:
[Cache JDBC] Communication link failure: Access Denied
This configuration worked perfectly with Caché 2016. I have verified the following:
TEST) exists and is correctly specified in the connection URL.test, password: test) are correct.This is the second part of an article pair where I walk you through:
As mentioned the goal is to give you a smooth “first run” experience.
If you already know Java (or .Net) and perhaps also have used other document databases (or looking for one), but you are new to the InterSystems world, this post should help you.
InterSystems IRIS Cloud Document is a fully managed document database that lets you store JSON documents and query them with familiar SQL syntax, delivered as a cloud service managed by InterSystems.
In this article pair I’ll walk you through:
The goal is to give you a smooth “first run” experience.
Hi community!
I am excited to say that since the beginning of this year we have published many of the client SDKs for InterSystems IRIS, InterSystems IRIS for Health and Health Connect to the corresponding external repositories (Maven, NuGet, npm and PyPI).
This module enables integration between Quarkus-based Java applications and InterSystems IRIS’s native performance monitoring capabilities.
It allows a developer to annotate methods with @PerfmonReport, which triggers IRIS’s ^PERFMON routines automatically around method execution, generating performance reports without manual intervention.
@PerfmonReportI need to build an integration solution that reads messages from a Kafka topic. The topic has 3 partitions and contains several million messages.
For certain reasons, I can only use the standard EnsLib.Kafka.Service class and cannot use either KafkaClient or Python.
To measure performance and collect statistics I created a simple key + timestamp table with no indexes (so it is unlikely to be a bottleneck). Next, I started an instance of EnsLib.Kafka.Service. In the OnProcessInput method, I receive a message, extract the key from it, get the current time, and write the row to the table.
We are happy to present the bonuses page for the applications submitted to the InterSystems .Net, Java, Python, and JavaScript Contest!
See the results below.
| Project |
XEP |
Native SDK |
PEX |
Java Persister |
ADONET & . |
Hi Developers!
Here are the technology bonuses for the InterSystems .Net, Java, Python, and JavaScript Contest that will give you extra points in the voting:
Hi Developers,
We are happy to announce the new InterSystems online programming contest:
🏆 InterSystems .Net, Java, Python, and JavaScript Contest 🏆
Duration: September 22 - October 12, 2025
Prize pool: $12,000
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In the era of IoT and connected devices, sensor data is everywhere—tracking temperature in logistics, monitoring equipment performance, or recording environmental conditions. But capturing, storing, and analyzing this data in real time requires more than just hardware sensors.
It’s a practical example that combines Spring Boot, InterSystems IRIS, and a simple sensor simulation script to show how sensor data can flow from generation to storage and alerting.
We currently have Business Operation that we built to use the EnsLib.SQL.OutboundAdapter so we can make Microsoft SQL Server Stored Procedure calls. The BO is attached to a Java Gateway Service.
Some of our MS SQL Databases have moved from being OnPrem to Azure Cloud. We have started seeing where we are receiving errors on the BO saying that we cannot connect to the Azure Database, but we never receive a Disconnect from the Azure Database.
Reviewing my published packages, I identified a nasty bug in IRIS Native API
Hey Developers,
Watch this video from our Tech Video Challenge to learn how to set up and work with the InterSystems IRIS Java External Language Gateway.
Hello. Currently, we are developing using Cache 2018 version.
Our team is working on improving an existing legacy program so that it can also be used on the web.
Before asking my question, here is the development environment.
Currently, we are successfully mapping global data through the %PERSISTENT class and able to query it with SQL. However, the problem is that the retrieved "Korean" data is all broken.
Hello, we are currently using the Cache Database released in January 2018.
There are no specific classes or SQL mappings in the namespaces where data is stored.
Only a few routines(.mac) and stored data are in the global area.
In this case, when accessing the Cache DB through Java, is it essential to write SQL mappings or wrapper classes? The reason I ask is that our team doesn't have advanced developers who specialize in Cache.
Alternatively, is it possible to directly call pre-existing routines from Java?
I apologize for the translation;
Here is my code:
Method getStocks(pRequest As Stock.Message.Req, Output pResponse As Ens.StreamContainer) As %Status
{
s tSC = pRequest.NewResponse(.pResponse)
q:$$$ISERR(tSC) tSC
#dim pRS As EnsLib.SQL.GatewayResultSet
s tSC = ..Adapter.ExecuteQuery(.pRS, "select jsonb_agg(s) #>> '{}' FROM prod.stocks s where s.""Warehouse"" = ?", pRequest.Warehouse)
q:$$$ISERR(tSC) tSC
s pResponse = ##class(Ens.StreamContainer).%New()
s pResponse.Stream = ##class(%GlobalCharacterStream).%New()
i pRS.Next() {
d pResponse.Stream.CopyFrom(pRS
Hello, dear colleagues.
I need to connect to a remote JavaGateway from an Ensemble service.
I am trying to use the EnsLib.JavaGateway.Service with a remote host where the JVM is running.
I can successfully ping the remote Java Gateway from EnsLib.JavaGateway.Service, and Ensemble reports that the service status is OK.
There are no network issues, and all necessary ports are accessible.
My requests work without any problems when I specify localhost in EnsLib.JavaGateway.Service.
Not sure there are many that connect to MS SQL to execute queries, stored procedures, etc, but our Healthsystem has many different MS SQL based databases we use within the Interoperability environment for various reasons.
With the push to moving from on-prem to the Cloud we ran into some difficulties with our SQL Gateway connections and knowing how to config them to use Microsoft Entra for Active Directory Authentication.
There are many articles out on the web, but there was not one that could give us the full answer to what we needed to do, and Microsoft wasn’t much help.
As part of a migration project from a bunch of java classes to IRIS, we need to maintain a few jar files due to some external dependencies.
The problem I am seeing is that I cannot pass a byte array ( byte[] ) from ObjectScript to the Java Class. I have tried a number of different ways
I have reproduced in a java class and Objectscript class:
Java Class:
package wrc;
publicclassTestJava{
publicstaticvoidtestByteArr(byte[] keyBytes){
System.out.println("keyBytes getClass() = " + keyBytes.getClass() );
System.out.println("keyBytes toString() = " + keyBytes.
s connection = ##class(%Net.Remote.Java.JavaGateway).%New()
s sc = connection.%Connect("127.0.0.1",53274)
s classpath="C:\Users\ME9Y1PM\Downloads\wrapper_jar\wrapper-drools-1.0.0-20241127.071529-1.jar"
if (sc=$$$OK) {
s SCJavaDroolsObj.connection=connection
s sc = SCJavaDroolsObj.connection.%Import("com.lca.smc.drools.DroolsRules")
s SCJavaDroolsObj.drools = ##class(com.lca.smc.drools.DroolsRules).%New()
d SCJavaDroolsObj.drools.applyRules(patientjson)
Class com.lca.smc.drools.DroolsRules Extends %Net.Remote.Base [ ProcedureBlock ]
{Parameter IMPORTTIMESTAMP As STRING = "2024-11-29 09:14:27.
If you like Java and have a thriving Java ecosystem at work into which you need to incorporate IRIS, it's not a problem. Java External Language Gateway will do it seamlessly, almost. This gateway serves as a bridge between Java and Object Script in IRIS. You can create objects of Java classes in IRIS and call their methods. You just need a jar file to do this.
An interface running on Ensemble generates PDFs by building a command line and invoking c:\InterSystems\Ensemble\fop\fop.bat
One day last week the PDF generation stopped working. The output from the .bat script says:
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The Server has not restarted, and the Java version has not been updated. Ensemble has not restarted. And Java is still accessible outside of Ensemble from the command line. So how come Ensemble has "lost" java? Any clues as to what might have gone on?
Managing databases and performing CRUD operations are fundamental tasks for developers building data-driven applications. While many database management systems (DBMS) exist, they can be complex and cumbersome to interact with, especially when it comes to creating databases and tables, handling constraints, and performing real-time data operations through an API.
This web-based Database Management Tool simplifies the entire process, offering an intuitive UI for managing databases and tables, alongside a powerful REST API for interacting with the data.
In this article, we’ll dive into the inner workings of the database management tool, exploring the architecture and technologies that power it. Understanding how the application functions behind the scenes will give you insight into its design, how it manages databases, tables, and how the API interacts with data.
We will discuss the core technologies used, including InterSystems IRIS as the primary database and Redis for caching. Additionally, we’ll break down the structure of the tables used and explain how the system handles data creation, retrieval, and manipulation through the REST API.
Hi Community,
Play the new video on InterSystems Developers YouTube:
⏯ High-Speed Ingestion Using InterSystems IRIS Persister with Java @ Global Summit 2023
Accessing an Azure cloud storage to upload/download blobs is quite easy using the designated %Net.Cloud.Storage.Client class API methods, or using the EnsLib.CloudStorage.* inbound/outbound adaptors.
Note that you'll need to have the %JavaServer External Language Server up and running to use the cloud storage API or adaptors, since they both use the PEX framework using the Java Server.
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Does IRIS for Health support Java 21?