On 6/17/13 7:02 AM, venu wrote:
Hi Rick,
My requirement is , I want to parse the SQL and get the data from the
Treewalkers visitednodes hashmap.
I am iterating the visitednodes hashmap and finding the columns data,tables
data,where clause data, order by data and group by data.
Is there any simple way to get above data other than iterating the hashmap.?
If you need to understand the structure of those clauses, then you're right, I think that you will need some kind of Visitor and you will want the Visitor logic to visit every node in the AST. I have added more clauses to the Visitor logic for SelectNode and ported that change to the 10.10 branch. Hopefully, this will help you move forward.

Thanks,
-Rick
Can you provide me a simple example for getting the column data from the
hashmap? Thanks!
Thanks,
Venu.



--
View this message in context: 
http://apache-database.10148.n7.nabble.com/Using-ASTParser-and-TreeWalker-for-parsing-SQL-query-tp131219p131475.html
Sent from the Apache Derby Users mailing list archive at Nabble.com.


Reply via email to