JoinRowSet example with JoinRowSetImpl 2

Description

import com.sun.rowset.CachedRowSetImpl;

import com.sun.rowset.JoinRowSetImpl;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import javax.sql.rowset.CachedRowSet;
import javax.sql.rowset.JoinRowSet;

public class JoinSample {

    Connection con;
    JDBCTutorialUtilities settings;

    public JoinSample(Connection connArg, JDBCTutorialUtilities settingsArg) {
        this.con = connArg;
        this.settings = settingsArg;
    }

    public static void getCoffeesBoughtBySupplier(String supplierName,
            Connection con) throws SQLException {
        Statement stmt = null;
        String query = "SELECT COFFEES.COF_NAME "
                + "FROM COFFEES, SUPPLIERS "
                + "WHERE SUPPLIERS.SUP_NAME LIKE '" + supplierName + "' "
                + "and SUPPLIERS.SUP_ID = COFFEES.SUP_ID";

        try {
            stmt = con.createStatement();
            ResultSet rs = stmt.executeQuery(query);
            System.out
                    .println("Coffees bought from " + supplierName + ": ");
            while (rs.next()) {
                String coffeeName = rs.getString(1);
                System.out.println("     " + coffeeName);
            }
        } catch (SQLException e) {
            JDBCTutorialUtilities.printSQLException(e);
        } finally {
            if (stmt != null) {
                stmt.close();
            }
        }
    }

    public void testJoinRowSet(String supplierName) throws SQLException {

        CachedRowSet coffees = null;
        CachedRowSet suppliers = null;
        JoinRowSet jrs = null;

        try {
            coffees = new CachedRowSetImpl();
            coffees.setCommand("SELECT * FROM COFFEES");
            coffees.setUsername(settings.userName);
            coffees.setPassword(settings.password);
            coffees.setUrl(settings.urlString);
            coffees.execute();

            suppliers = new CachedRowSetImpl();
            suppliers.setCommand("SELECT * FROM SUPPLIERS");
            suppliers.setUsername(settings.userName);
            suppliers.setPassword(settings.password);
            suppliers.setUrl(settings.urlString);
            suppliers.execute();

            jrs = new JoinRowSetImpl();
            jrs.addRowSet(coffees, "SUP_ID");
            jrs.addRowSet(suppliers, "SUP_ID");

            System.out
                    .println("Coffees bought from " + supplierName + ": ");
            while (jrs.next()) {
                if (jrs.getString("SUP_NAME").equals(supplierName)) {
                    String coffeeName = jrs.getString(1);
                    System.out.println("     " + coffeeName);
                }
            }
        } catch (SQLException e) {
            JDBCTutorialUtilities.printSQLException(e);
        } finally {
            if (jrs != null) {
                jrs.close();
            }
            if (suppliers != null) {
                suppliers.close();
            }
            if (coffees != null) {
                coffees.close();
            }
        }
    }

    public static void main(String[] args) {
        JDBCTutorialUtilities myJDBCTutorialUtilities;
        Connection myConnection = null;
        if (args[0] == null) {
            System.err
                    .println("Properties file not specified at command line");
            return;
        } else {
            try {
                myJDBCTutorialUtilities = new JDBCTutorialUtilities(args[0]);
            } catch (Exception e) {
                System.err.println("Problem reading properties file "
                        + args[0]);
                e.printStackTrace();
                return;
            }
        }

        try {
            myConnection = myJDBCTutorialUtilities.getConnection();

            System.out.println("\nCoffees bought by each supplier:");
            JoinSample.getCoffeesBoughtBySupplier("Acme, Inc.",
                    myConnection);

            System.out.println("\nUsing JoinRowSet:");
            JoinSample myJoinSample = new JoinSample(myConnection,
                    myJDBCTutorialUtilities);
            myJoinSample.testJoinRowSet("Acme, Inc.");

        } catch (SQLException e) {
            JDBCTutorialUtilities.printSQLException(e);
        } finally {
            JDBCTutorialUtilities.closeConnection(myConnection);
        }

    }
}

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 * are met:
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 *
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 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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JoinRowSet example with JoinRowSetImpl 2 - Java JDBC

Description

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