How to do the second search in the Result set? Thanks
Hi:
I am going to implement a function so called "search in the result", with Tomcat 5 and Mysql 4.11
The user will give out some conditions first , with these conditions, do the first search.
Then they give some other conditions to do the advance search in the result from the first search.
i dont wanna do the sec search with the combine conditions of first and second ones. as u know this will involve too much database retrieve.
can i save the first search as the temp table or view? and then do the sec search directly from this temp table or view. is it possible in the JSP ?
Thanks in advance.
Hi,
If u want to visit database only once follow this approach.
Store the results of first query in a HashMap where the primary key of th table shld be made the key objects of Map and the values should be a Vector conating values of other clumns in database.
Now, when user wants to refine the search with more criteria, just use vector.contains() method to check wether the new criteria are ther in values vector. If it there means the current key in hashmap satifies the refired criteria. So, retain this row. And any row which does not satisfy the refined criteria, remove that key-value pair from HashMap.
Hope this helps.
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out.println("<tr>");
rs.close();
stmt.close();
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out.close();
catch (Exception e)
//sendErrorToClient(out, e); //send stack trace to client
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finally{
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do you refer to the following change of code:
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