/**
* Invokes a method.
*
* @param methodName
* @param targetObjectId
* @param args
* @return
*/
public ReturnObject invoke(String methodName, String targetObjectId, List<Object> args) {
if (args == null) {
args = new ArrayList<Object>();
}
ReturnObject returnObject = null;
try {
Object targetObject = getObjectFromId(targetObjectId);
logger.finer("Calling: " + methodName);
Object[] parameters = args.toArray();
MethodInvoker method = null;
if (targetObject != null) {
method = rEngine.getMethod(targetObject, methodName, parameters);
} else {
method =
rEngine.getMethod(
targetObjectId.substring(Protocol.STATIC_PREFIX.length()), methodName, parameters);
}
Object object = rEngine.invoke(targetObject, method, parameters);
returnObject = getReturnObject(object);
} catch (Py4JJavaException je) {
String id = putNewObject(je.getCause());
returnObject = ReturnObject.getErrorReferenceReturnObject(id);
} catch (Py4JException pe) {
throw pe;
} catch (Exception e) {
throw new Py4JException(e);
}
return returnObject;
}
/**
* Invokes a constructor and returned the constructed object.
*
* @param fqn The fully qualified name of the class.
* @param args
* @return
*/
public ReturnObject invoke(String fqn, List<Object> args) {
if (args == null) {
args = new ArrayList<Object>();
}
ReturnObject returnObject = null;
try {
logger.finer("Calling constructor: " + fqn);
Object[] parameters = args.toArray();
MethodInvoker method = rEngine.getConstructor(fqn, parameters);
Object object = rEngine.invoke(null, method, parameters);
returnObject = getReturnObject(object);
} catch (Py4JJavaException je) {
String id = putNewObject(je.getCause());
returnObject = ReturnObject.getErrorReferenceReturnObject(id);
} catch (Py4JException pe) {
throw pe;
} catch (Exception e) {
throw new Py4JException(e);
}
return returnObject;
}