package basicjdbcdemo2;

import java.math.BigDecimal;
import java.sql.*;
import java.util.Properties;

import javax.swing.JOptionPane;

/**
 *
 * @author SEEDAGX
 */
public class BasicDemo2JFrame extends javax.swing.JFrame {
    Connection conn;
    String connUrl = "jdbc:sqlserver://SEEDAGX\\SQLEXPRESS;databaseName=Employee;integratedSecurity=true";

    /** Creates new form BasicDemo2JFrame */
    public BasicDemo2JFrame() {
        initComponents();
        /*
        try {
            Driver d = (Driver) Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver").newInstance();            
            conn = d.connect(connUrl, new Properties());
        }  catch (ClassNotFoundException ex) {
            System.err.println(ex.getMessage());
        } catch (IllegalAccessException ex) {
            System.err.println(ex.getMessage());
        } catch (InstantiationException ex) {
            System.err.println(ex.getMessage());
        } catch (SQLException ex) {
            System.err.println(ex.getMessage());
        }
        */
    }

    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    private void initComponents() {//GEN-BEGIN:initComponents

        jLabel1 = new javax.swing.JLabel();
        jTextField1 = new javax.swing.JTextField();
        jLabel2 = new javax.swing.JLabel();
        jTextField2 = new javax.swing.JTextField();
        jLabel3 = new javax.swing.JLabel();
        jTextField3 = new javax.swing.JTextField();
        jLabel4 = new javax.swing.JLabel();
        jTextField4 = new javax.swing.JTextField();
        jButton1 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        jButton3 = new javax.swing.JButton();
        jButton4 = new javax.swing.JButton();
        jButton5 = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jLabel1.setText("EmpId");

        jLabel2.setText("EmpName");

        jLabel3.setText("EmpDesgn");

        jLabel4.setText("EmpSalary");

        jButton1.setText("SELECT");
        jButton1.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jButton1MouseClicked(evt);
            }
        });

        jButton2.setText("INSERT");
        jButton2.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jButton2MouseClicked(evt);
            }
        });

        jButton3.setText("UPDATE");
        jButton3.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jButton3MouseClicked(evt);
            }
        });

        jButton4.setText("DELETE");
        jButton4.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jButton4MouseClicked(evt);
            }
        });

        jButton5.setText("RESET");
        jButton5.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jButton5MouseClicked(evt);
            }
        });

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                    .addGroup(layout.createSequentialGroup()
                        .addGap(54, 54, 54)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                                    .addComponent(jLabel4)
                                    .addComponent(jLabel3))
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                    .addComponent(jTextField4)
                                    .addComponent(jTextField3)))
                            .addGroup(layout.createSequentialGroup()
                                .addGap(1, 1, 1)
                                .addComponent(jButton1)
                                .addGap(18, 18, 18)
                                .addComponent(jButton2)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                .addComponent(jButton3)
                                .addGap(18, 18, 18)
                                .addComponent(jButton4)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                .addComponent(jButton5))))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(55, 55, 55)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                            .addComponent(jLabel2)
                            .addComponent(jLabel1))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jTextField2)
                            .addComponent(jTextField1))))
                .addContainerGap(98, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(27, 27, 27)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel1)
                    .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel2))
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel3))
                .addGap(25, 25, 25)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel4))
                .addGap(32, 32, 32)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton1)
                    .addComponent(jButton2)
                    .addComponent(jButton3)
                    .addComponent(jButton4)
                    .addComponent(jButton5))
                .addContainerGap(37, Short.MAX_VALUE))
        );

        pack();
    }//GEN-END:initComponents

    private void jButton1MouseClicked(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton1MouseClicked
        // TODO add your handling code here:
        String query = "SELECT * FROM EmployeeDetails WHERE EmpId = ?";
        
        try {
            Driver d = (Driver) Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver").newInstance();            
            conn = d.connect(connUrl, new Properties());
            
            // バインド変数を格納したSQLを発行するため、PreparedStatementを用意する。
            PreparedStatement ps = conn.prepareStatement(query);
            
            // idに対して値を代入する。この「1」というのは、1番目のバインド変数idを指す。
            int iempid = Integer.parseInt(jTextField1.getText());
            ps.setInt(1, iempid);
            
            // 結果を取得する。
            ResultSet rs = ps.executeQuery();
            
            while (rs.next()) {
                jTextField1.setText(String.valueOf(rs.getInt("EmpId")));
                jTextField2.setText(rs.getString("EmpName"));
                jTextField3.setText(rs.getString("EmpDesgn"));
                jTextField4.setText(String.valueOf(rs.getBigDecimal("EmpSalary")));
            }
        } catch(Exception ex) {
            ex.printStackTrace();
        } finally {
            try {
                if (conn != null && !conn.isClosed()) {
                    conn.close();
                }
            } catch (SQLException ex) {
                ex.printStackTrace();
            }
        }
    }//GEN-LAST:event_jButton1MouseClicked

    private void jButton2MouseClicked(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton2MouseClicked
        // TODO add your handling code here:
        String query = "INSERT INTO EmployeeDetails VALUES(?, ?, ?, ?)";
        
        try {
            Driver d = (Driver) Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver").newInstance();            
            conn = d.connect(connUrl, new Properties());
            
            // バインド変数を格納したSQLを発行するため、PreparedStatementを用意する。
            PreparedStatement ps = conn.prepareStatement(query);
            
            // idに対して値を代入する。この「1」というのは、1番目のバインド変数idを指す。
            int iempid = Integer.parseInt(jTextField1.getText());
            ps.setInt(1, iempid);
            ps.setString(2, jTextField2.getText());
            ps.setString(3, jTextField3.getText());
            BigDecimal dempsal = new BigDecimal(jTextField4.getText());
            ps.setBigDecimal(4, dempsal);
            
            // 結果を取得する。
            ResultSet rs = ps.executeQuery();
            
        } catch(Exception ex) {
            ex.printStackTrace();
        } finally {
            try {
                if (conn != null && !conn.isClosed()) {
                    conn.close();
                }
            } catch (SQLException ex) {
                ex.printStackTrace();
            }
        }
        
        JOptionPane.showMessageDialog(this, "データの挿入が完了しました。", "確認", JOptionPane.INFORMATION_MESSAGE);
    }//GEN-LAST:event_jButton2MouseClicked

    private void jButton3MouseClicked(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton3MouseClicked
        // TODO add your handling code here:
        String query = "UPDATE EmployeeDetails SET EmpName = ?, EmpDesgn = ?, EmpSalary = ? WHERE EmpId = ?";
        
        try {
            Driver d = (Driver) Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver").newInstance();            
            conn = d.connect(connUrl, new Properties());
            
            // バインド変数を格納したSQLを発行するため、PreparedStatementを用意する。
            PreparedStatement ps = conn.prepareStatement(query);
            
            // idに対して値を代入する。この「1」というのは、1番目のバインド変数idを指す。            
            ps.setString(1, jTextField2.getText());
            ps.setString(2, jTextField3.getText());
            BigDecimal dempsal = new BigDecimal(jTextField4.getText());
            ps.setBigDecimal(3, dempsal);
            int iempid = Integer.parseInt(jTextField1.getText());
            ps.setInt(4, iempid);
            
            // 結果を取得する。
            ResultSet rs = ps.executeQuery();
            
        } catch(Exception ex) {
            ex.printStackTrace();
        } finally {
            try {
                if (conn != null && !conn.isClosed()) {
                    conn.close();
                }
            } catch (SQLException ex) {
                ex.printStackTrace();
            }
        }
        
        JOptionPane.showMessageDialog(this, "データの更新が完了しました。", "確認", JOptionPane.INFORMATION_MESSAGE);
    }//GEN-LAST:event_jButton3MouseClicked

    private void jButton4MouseClicked(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton4MouseClicked
        // TODO add your handling code here:
        String query = "DELETE EmployeeDetails WHERE EmpId = ?";
        
        try {
            Driver d = (Driver) Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver").newInstance();            
            conn = d.connect(connUrl, new Properties());
            
            // バインド変数を格納したSQLを発行するため、PreparedStatementを用意する。
            PreparedStatement ps = conn.prepareStatement(query);
            
            // idに対して値を代入する。この「1」というのは、1番目のバインド変数idを指す。            
            int iempid = Integer.parseInt(jTextField1.getText());
            ps.setInt(1, iempid);
            
            // 結果を取得する。
            ResultSet rs = ps.executeQuery();
            
        } catch(Exception ex) {
            ex.printStackTrace();
        } finally {
            try {
                if (conn != null && !conn.isClosed()) {
                    conn.close();
                }
            } catch (SQLException ex) {
                ex.printStackTrace();
            }
        }
        
        JOptionPane.showMessageDialog(this, "データの削除が完了しました。", "確認", JOptionPane.INFORMATION_MESSAGE);
    }//GEN-LAST:event_jButton4MouseClicked

    private void jButton5MouseClicked(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton5MouseClicked
        // TODO add your handling code here:
        jTextField1.setText("");
        jTextField2.setText("");
        jTextField3.setText("");
        jTextField4.setText("");
    }//GEN-LAST:event_jButton5MouseClicked

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing
                                                                   .UIManager
                                                                   .getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing
                         .UIManager
                         .setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util
                .logging
                .Logger
                .getLogger(BasicDemo2JFrame.class.getName())
                .log(java.util
                         .logging
                         .Level
                         .SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util
                .logging
                .Logger
                .getLogger(BasicDemo2JFrame.class.getName())
                .log(java.util
                         .logging
                         .Level
                         .SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util
                .logging
                .Logger
                .getLogger(BasicDemo2JFrame.class.getName())
                .log(java.util
                         .logging
                         .Level
                         .SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util
                .logging
                .Logger
                .getLogger(BasicDemo2JFrame.class.getName())
                .log(java.util
                         .logging
                         .Level
                         .SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt
            .EventQueue
            .invokeLater(new Runnable() {
                public void run() {
                    new BasicDemo2JFrame().setVisible(true);
                }
            });
        
        new BasicDemo2JFrame();
    }

    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JButton jButton3;
    private javax.swing.JButton jButton4;
    private javax.swing.JButton jButton5;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JTextField jTextField1;
    private javax.swing.JTextField jTextField2;
    private javax.swing.JTextField jTextField3;
    private javax.swing.JTextField jTextField4;
    // End of variables declaration//GEN-END:variables

}