spring-r

Spring Boot Using R Packages Demo

This repository contains the code for a demo application for GraalVM.

Prerequisites

• GraalVM 22.3.0 or lower
• R runtime

Note: FastR is no longer under active development and is in maintenance mode. The last released version is 22.3.0.

Preparation

This is a simple Java Spring application that uses GraalVM interoperability to load an R script, which uses typical R packages, lattice in this case.

1. Download and install GraalVM 22.3.0 with the R language support, using the GraalVM JDK Downloader.

   bash <(curl -sL https://get.graalvm.org/jdk) graalvm-ce-java17-22.3.0 -c 'R'

   Follow the post-install message.

2. Download or clone the repository and navigate into the spring-r directory:

   git clone https://github.com/graalvm/graalvm-demos

   cd graalvm-demos/spring-r

3. Run the example:

   mvn spring-boot:run -Dgraalvm.version=22.3.0

Replace "22.1.0" with your version of GraalVM. When the application is ready, open http://localhost:8080/load.

Note: It may take 2-3 minutes to generate the plot.