Custom RowSet MetaData

package example.jdbc.resultsetmetadata;
 
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;
import java.sql.Types;
 
import javax.sql.RowSetMetaData;
import javax.sql.rowset.CachedRowSet;
import javax.sql.rowset.RowSetMetaDataImpl;
 
import com.sun.rowset.CachedRowSetImpl;
 
public class Main {
    public static void main(String[] args) throws Exception {
	Connection conn = getHSQLConnection();
	System.out.println("Got Connection.");
	Statement st = conn.createStatement();
	st.executeUpdate("create table survey (id int,name varchar);");
	st.executeUpdate("create view surveyView as (select * from survey);");
	st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");
	st.executeUpdate("insert into survey (id,name ) values (2,'anotherValue')");
 
	CachedRowSet crs = null;
	RowSetMetaData rsMD = new RowSetMetaDataImpl();
	rsMD.setColumnCount(2);
	rsMD.setColumnName(1, "id");
	rsMD.setColumnType(1, Types.VARCHAR);
	rsMD.setColumnName(2, "name");
	rsMD.setColumnType(2, Types.VARCHAR);
	// sets the designated column's table name, if any, to the given String.
	rsMD.setTableName(1, "survey");
	rsMD.setTableName(2, "survey");
 
	// use a custom made RowSetMetaData object for CachedRowSet object
	crs = new CachedRowSetImpl();
	crs.setMetaData(rsMD);
 
	crs.moveToInsertRow();
	crs.updateString(1, "1111");
	crs.updateString(2, "alex");
	crs.insertRow();
 
	crs.moveToInsertRow();
	crs.updateString(1, "2222");
	crs.updateString(2, "jane");
	crs.insertRow();
 
	// if you want to commit changes from a CachedRowSet
	// object to your desired datasource, then you must
	// create a Connection object.
	//
	// conn = getHSQLConnection();
 
	// moves the cursor to the remembered cursor position, usually
	// the current row. This method has no effect if the cursor is
	// not on the insert row.
	crs.moveToCurrentRow();
 
	// when the method acceptChanges() is executed, the CachedRowSet
	// object's writer, a RowSetWriterImpl object, is called behind the
	// scenes to write the changes made to the rowset to the underlying
	// data source. The writer is implemented to make a connection to
	// the data source and write updates to it.
	crs.acceptChanges(conn);
	conn.close();
    }
 
    private static Connection getHSQLConnection() throws Exception {
	Class.forName("org.hsqldb.jdbcDriver");
	System.out.println("Driver Loaded.");
	String url = "jdbc:hsqldb:data/tutorial";
	return DriverManager.getConnection(url, "sa", "");
    }
 
    public static Connection getMySqlConnection() throws Exception {
	String driver = "org.gjt.mm.mysql.Driver";
	String url = "jdbc:mysql://localhost/demo2s";
	String username = "oost";
	String password = "oost";
 
	Class.forName(driver);
	Connection conn = DriverManager.getConnection(url, username, password);
	return conn;
    }
 
    public static Connection getOracleConnection() throws Exception {
	String driver = "oracle.jdbc.driver.OracleDriver";
	String url = "jdbc:oracle:thin:@localhost:1521:caspian";
	String username = "mp";
	String password = "mp2";
 
	Class.forName(driver); // load Oracle driver
	Connection conn = DriverManager.getConnection(url, username, password);
	return conn;
    }
}