org.graalvm.polyglot

Annotation Type HostAccess.Export

@Target(value={CONSTRUCTOR,FIELD,METHOD})
 @Retention(value=RUNTIME)
public static @interface HostAccess.Export

Annotation used by the predefined HostAccess.EXPLICIT access policy to mark public constructors, methods and fields in public classes that should be accessible by the guest application.

Example using a Java object from JavaScript:

 public class JavaRecord {
     @HostAccess.Export public int x;

     @HostAccess.Export
     public String name() {
         return "foo";
     }
 }
 try (Context context = Context.create()) {
     JavaRecord record = new JavaRecord();
     context.getBindings("js").putMember("javaRecord", record);
     context.eval("js", "javaRecord.x = 42");
     context.eval("js", "javaRecord.name()").asString().equals("foo");
 }
 

Since:

19.0

See Also:

Context.Builder.allowHostAccess(HostAccess), HostAccess.EXPLICIT