Hi ooper,

 

There is a smart alternative to the use of parent child relation and the resulting recursive queries;

The Nested Set Model.

 

http://dev.mysql.com/tech-resources/articles/hierarchical-data.html

 

 

MEINDERT HOVING

From: ooper [mailto:[EMAIL PROTECTED]
Sent: 23 November 2005 06:30 PM
To: user-java@ibatis.apache.org
Subject: Re:Cache entire table for use in an application

 

I have a recursive function that builds a tree menu from data in the db. The recursive function executes
a sql query against the database for each node of the tree, so as the tree gets larger, the time needed to
build it becomes larger. In an effort to enhance performance, I wanted to pull data into memory, and
then execute recursive sql queries against memory.

Brian


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