Method exec

test/org/apache/pig/test/TestPOUserFunc.java:55–64

(Tuple input)

	public static class ARITY extends EvalFunc<Integer> {

		@Override
		public Integer exec(Tuple input) throws IOException {
			try {
                return new Integer(((Tuple)input.get(0)).size());
            } catch (ExecException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            return 0;
		}

		@Override
		public Schema outputSchema(Schema input) {