From: Lab Goat <lists@...>
Date: 2012-10-28T06:49:42+09:00
Subject: Newbie Help: findMatchingCallableForArgs error

I'm unable to get a simple ruby script to work that makes use of a Java
class and could use some assistance. I've read all through the wiki and
tried some googling, but no luck.

JRuby Version:
jruby 1.7.0 (1.9.3p203) 2012-10-22 ff1ebbe on Java HotSpot(TM) 64-Bit
Server VM 1.7.0_09-b05 [darwin-x86_64]

Java Version:
java version "1.7.0_09"
Java(TM) SE Runtime Environment (build 1.7.0_09-b05)
Java HotSpot(TM) 64-Bit Server VM (build 23.5-b02, mixed mode)

I'm trying to create a super simple ruby script that interfaces with the
Stanford NLP Parser (Java). For now I'm just trying to recreate, in
Ruby, a the first line from their Java demo. I've run the demo and it
runs fine. Here is a snippet of the Java code:

-----------------------------
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.io.StringReader;

import edu.stanford.nlp.objectbank.TokenizerFactory;
import edu.stanford.nlp.process.CoreLabelTokenFactory;
import edu.stanford.nlp.process.DocumentPreprocessor;
import edu.stanford.nlp.process.PTBTokenizer;
import edu.stanford.nlp.ling.CoreLabel;
import edu.stanford.nlp.ling.HasWord;
import edu.stanford.nlp.ling.Sentence;
import edu.stanford.nlp.trees.*;
import edu.stanford.nlp.parser.lexparser.LexicalizedParser;

class ParserDemo {

  public static void main(String[] args) {
    LexicalizedParser lp =
LexicalizedParser.loadModel("edu/stanford/nlp/models/lexparser/englishPCFG.ser.gz");
...
-----------------------------

Here is my simple jruby script:

-----------------------------
require './stanford-parser.jar'
require './stanford-parser-models.jar'

java_import "edu.stanford.nlp.parser.lexparser.LexicalizedParser"

lp =
LexicalizedParser.loadModel("edu/stanford/nlp/models/lexparser/englishPCFG.ser.gz")
puts "Done"
-----------------------------

I get this error. Any help is appreciated.

CallableSelector.java:112:in `findMatchingCallableForArgs':
java.lang.ArrayIndexOutOfBoundsException: 2
  from CallableSelector.java:45:in `matchingCallableArityN'
  from RubyToJavaInvoker.java:215:in `findCallable'
  from StaticMethodInvoker.java:28:in `call'
  from StaticMethodInvoker.java:55:in `call'
  from CachingCallSite.java:326:in `cacheAndCall'
  from CachingCallSite.java:170:in `call'
  from blah.rb:6:in `__file__'
  from blah.rb:-1:in `load'
  from Ruby.java:770:in `runScript'
  from Ruby.java:763:in `runScript'
  from Ruby.java:640:in `runNormally'
  from Ruby.java:489:in `runFromMain'
  from Main.java:375:in `doRunFromMain'
  from Main.java:264:in `internalRun'
  from Main.java:230:in `run'
  from Main.java:214:in `run'
  from Main.java:194:in `main'

Thanks!

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