Main.java Source code

Introduction

Here is the source code for Main.java

Source

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();
        crs.moveToCurrentRow();

        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;
    }
}