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import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;
import javax.sql.RowSetMetaData;
import javax.sql.rowset.WebRowSet;
import com.sun.rowset.WebRowSetImpl;
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')");
String sqlQuery = "SELECT * FROM survey";
WebRowSet webRS = new WebRowSetImpl();
webRS.setCommand(sqlQuery);
webRS.execute(conn);
// create RowSetMetaData object
RowSetMetaData rsMD = (RowSetMetaData) webRS.getMetaData();
System.out.println("rsMD=" + rsMD);
if (rsMD == null) {
System.out.println("vendor does not support RowSetMetaData");
} else {
int columnCount = rsMD.getColumnCount();
System.out.println("columnCount=" + columnCount);
}
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;
}
}
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