shelajev

# docker build . -t graalvm-ce-nightly

from ubuntu:latest as GRAALVM-BUILD

ENV DEBIAN_FRONTEND noninteractive
ENV JVMCI_VERSION_CHECK ignore

WORKDIR graalvm-build

RUN apt-get update \

shelajev

const readline = require('readline');
var GenericContainer = Java.type('org.testcontainers.containers.GenericContainer');
var container = new GenericContainer("nginx");
container.setExposedPorts([80]);
container.start();
console.log(container.getContainerIpAddress() + ':' + container.getMappedPort(80));
const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

shelajev

import java.util.*;
import org.graalvm.polyglot.proxy.*;

public class Pojo { 
  public static Object getMap() {
    Map mapOuter = new HashMap();
    Map mapInner = new HashMap();
    List arrayInner = new ArrayList();

    mapInner.put("1", 3);

shelajev

const readline = require('readline');

var GenericContainer = Java.type('org.testcontainers.containers.GenericContainer');

var container = new GenericContainer("nginx").withExposedPorts([80]);
container.start();

console.log(container.getContainerIpAddress() + ':' + container.getMappedPort(80));

const rl = readline.createInterface({

shelajev

public class RJavaBench {
  public int intField;
  public double doubleField;
  
  public int intFunction(int a, int b) { return a - b; }
  
  public RJavaBench objectFunction(RJavaBench a) {
    RJavaBench result = new RJavaBench();
    // ...
    return result;

shelajev

Context ctx = Context.newBuilder("R").allowAllAccess(true).build();
Value rFunction = context.eval("R",
        "function(table) { " +
        "  table <- as.data.frame(table);" +
        "  cat('The whole data frame printed in R:\n');" +
        "  print(table);" +
        "  cat('---------\n\n');" +
        "  cat('Filter out users with ID>2:\n');" +
        "  print(table[table$id > 2,]);" +
        "}");

shelajev

public static final class User {
    public final int id;
    public final String name;
    // ...usual constructor
}
public static class NameColumn implements ProxyArray {
    private final User[] users;
    public NameColumn(User[] users) {
        this.users = users;
    }

shelajev

Context ctx = Context.newBuilder("R").allowAllAccess(true).build();
ctx.eval("R", "sum").execute(new int[] {1,2,3});

shelajev

svg()
print(histogram(...))
svgCode <- svg.string()

png('/path/to/image.png')
print(histogram(...))
dev.off()

shelajev

# load the R package lattice and open a window for plotting
polyglot.eval(string="library(lattice); awt()", language="R")
# Create R function that draws a histogram
plot = polyglot.eval(string="function(y) {print(histogram(~as.vector(y), main='Hello from Python to R', xlab='Python List')) }", language="R")
# invoke the R function from Python
plot(result)