Source files:

Grouping.html

(this html page),

Grouping_Layout.xml

(static XML layout),

Grouping_Data.jsp

(server script generates XML list of pages),

Grouping_Page.jsp

(server script generates XML for individual page),

../Database.*

(source SQL database, table TableData)

You have to copy file hsqldb.jar to your JRE shared lib directory and restart your http server

The JSP service program must have write access to all files database.*

The

hsqldb.jar

is JDBC driver for

HSQLDB database

and is located in TreeGrid distribution in /Server/Jsp/ directory. The shared lib directory is usually jre_install_path/lib/ext and also e.g. in Tomcat is usually tomcat_install_path/shared/lib.
You can use any other SQL database instead of HSQLDB (e.g.

Oracle

,

MS SQL server

,

MySQL

,...), just assign different connection to java.sql.Connection Conn in the *.jsp files. You can run the ../MySqlUTF8.sql script to create the "TreeGridTest" sample database on your SQL server.

Demonstrates server root paging but client child paging - all children from groups are downloaded from server at once. There is no server communication on parent row expand.
This is only simple example with not ideal database access (for every page gets all data). The root pages are downloaded on demand from server (when the page is visible by scrollbars).