private LogicalPlan visit(String query) throws RecognitionException, ParsingFailureException, IOException {
LogicalPlan plan = ParserTestingUtils.generateLogicalPlan( query );
PigContext pc = new PigContext( ExecType.LOCAL, new Properties() );
pc.connect();
ScalarVisitor visitor = new ScalarVisitor(plan, pc, "test");
visitor.visit();
return plan;
}
}