This repository contains the code for a demo application for GraalVM.
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
This is a simple Java Spring application that uses GraalVM interop to
load an R script, which uses typical R packages, ggplot2 in this case.
Before running this example, you need to build the application.
Make sure you export $GRAALVM_HOME, add $GRAALVM_HOME/bin to the $PATH.
Set JAVA_HOME=$GRAALVM_HOME to be able to add graal-sdk.jar to the classpath.
Install R support for GraalVM:
gu install R
Install R dependencies. The following command will download the sources for the ggplot2 dependencies, and place them into GraalVM distribution. (Note: it can take a couple of minutes.)
Rscript -e "install.packages(\"ggplot2\")"
Run mvn spring-boot:run
When the application is ready, open http:https://localhost:8080/load.