R: Java callback engineCast a Java object to another class
jengine
R Documentation
Java callback engineCast a Java object to another class
Description
.jengine obtains the current callback engine or starts it.
Usage
.jengine(start=FALSE, silent=FALSE)
Arguments
start
if set to TRUE then the callback engine is started
if it is not yet active
silent
if set to TRUE then NULL is returned if there is
no engine available. Otherwise an error is raised
Details
.jengine can be used to detect whether the engine was started
or to start the engine.
Before any callbacks from Java into R can be performed, the Java
callback engine must be initialized, loading Java/R Interface
(JRI). If JRI was not started and start is set to TRUE
then .jengine will load necessary classes and start
it.
Note that JRI is an optional part of rJava and requires R shared
library at the moment. By default rJava will continue with
installation even if JRI cannot be built.
Value
Returns a Java object reference (jobjRef) to the current Java
callback engine.