Map<ASTNode, ExprNodeDesc> genAllExprNodeDesc(ASTNode expr, RowResolver input)
      throws SemanticException {
    TypeCheckCtx tcCtx = new TypeCheckCtx(input);
    return genAllExprNodeDesc(expr, input, tcCtx);
  }
Generates an expression node descriptors for the expression and children of it
with default TypeCheckCtx.
ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java