update failed in grid using dataprocessor and connector


i am now currently using the h2 database, i used dhtmlxConnector to connect the database to grid using servlet it worked but when i am trying to update or delete it is not performed on the database but it is performed only on the grid
here is my code as below


import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;

import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import com.dhtmlx.connector.ConnectorServlet;
import com.dhtmlx.connector.GridConnector;

public class Database_conn extends ConnectorServlet {

public Database_conn() {


protected void configure() {

Connection conn=null;
try {
Class.forName (“org.h2.Driver”).newInstance ();
conn = DriverManager.getConnection(“jdbc:h2:~/test”, “sa”, “”);
} catch (Throwable e) {

GridConnector c = new GridConnector(conn);
c.render_table(“test”, “ID”, “ID,NAME”);

HTML page

Insert title here

when i checked the related document about data processor it gives only methods the binding with grid please help me…