Gestion d'une table de base de données avec JCombox

**cotede2** · 29/10/2009, 12h39

Bonjour, voilà j'ai une table toute simple SQL qui a cette structure

Code :

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hote_id  int 
hote_code varchar 
hote_libelle varchar

J'aimerais pouvoir permettre à mes utilisateurs de gérer cette table via un onglet dans l'appli Java/SWING que je leur ai mise à disposition.

Pour cela , j'ai créé un Jpanel ou j'ai placé un menu déroulant Jcombobox , un bouteau Nouveau , Editer et Supprimer.

Voici mon Jpanel :

Code :

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package com.fft.tribune;
 
import com.fft.tribune.TableBercy;
import com.fft.tribune.tools.Functions;
import com.fft.tribune.tools.SQLError;
import java.awt.event.ItemEvent;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;
import javax.swing.JOptionPane;
import org.apache.log4j.Category;
 
/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
 
/*
 * BercyPanel.java
 *
 * Created on 27 oct. 2009, 10:34:50
 */
 
/**
 *
 * @author itrec
 */
public class BercyPanel extends javax.swing.JPanel {
 
 
    static final Category log = Category.getInstance(BercyPanel.class);
 
    private TablesModel tablesmodel = new TablesModel();
    private String querycountDel = "SELECT count(*) as nombreInvites FROM V_TP_INVITES WHERE INV_MIDI = CODETABLE OR  INV_MIDI = CODETABLE";
    private String queryDel = "DELETE FROM TP_HOTE WHERE HOTE_ID = HOTEID";
 
    private String lastIdSelected = "";
 
 
    /** Creates new form BercyPanel */
    public BercyPanel() {
        initComponents();
 
        jComboBox1.setModel(tablesmodel);
 
         jComboBox1.addItemListener(new java.awt.event.ItemListener() {
            public void itemStateChanged(java.awt.event.ItemEvent evt) {
                evtComboBoxItemStateChanged(evt);
            }
 
            private void evtComboBoxItemStateChanged(ItemEvent evt) {
 
                      lastIdSelected = tablesmodel.getSelectedId();
 
                      log.debug(tablesmodel.getSelectedLibelle());
                      log.debug(tablesmodel.getSelectedCode());
                      log.debug(tablesmodel.getSelectedId());
            }
        });
 
 
        jLabel1.setFont(new java.awt.Font("MS Sans Serif", 0, 18));
 
        log.debug("load des tables");
        loadTables();
 
    }
 
    /** 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")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {
 
        jLabel1 = new javax.swing.JLabel();
        nouveau = new javax.swing.JButton();
        jComboBox1 = new javax.swing.JComboBox();
        editer = new javax.swing.JButton();
        supprimer = new javax.swing.JButton();
 
        jLabel1.setText("Gestion Des Tables Bercy");
 
        nouveau.setText("Nouveau");
        nouveau.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                nouveauActionPerformed(evt);
            }
        });
        nouveau.addAncestorListener(new javax.swing.event.AncestorListener() {
            public void ancestorMoved(javax.swing.event.AncestorEvent evt) {
            }
            public void ancestorAdded(javax.swing.event.AncestorEvent evt) {
                nouveauAncestorAdded(evt);
            }
            public void ancestorRemoved(javax.swing.event.AncestorEvent evt) {
            }
        });
 
        jComboBox1.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Item 1", "Item 2", "Item 3", "Item 4" }));
 
        editer.setText("Editer");
        editer.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                editerActionPerformed(evt);
            }
        });
 
        supprimer.setText("Supprimer");
        supprimer.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                supprimerActionPerformed(evt);
            }
        });
 
        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
        this.setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGap(120, 120, 120)
                        .addComponent(jLabel1))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(53, 53, 53)
                        .addComponent(nouveau)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                        .addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(editer)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                        .addComponent(supprimer)))
                .addContainerGap(26, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(24, 24, 24)
                .addComponent(jLabel1)
                .addGap(45, 45, 45)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(nouveau)
                    .addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(editer)
                    .addComponent(supprimer))
                .addContainerGap(39, Short.MAX_VALUE))
        );
    }// </editor-fold>
 
 
     public void loadTables() {
 
        // Evenement ComboBox
        log.debug("loadTables()");
        if ( tablesmodel.load() == false ) {
            new SQLError();
        }
    }
 
 
    private void nouveauActionPerformed(java.awt.event.ActionEvent evt) {                                        
 
        log.debug("new table");
        TableBercy newTable = new TableBercy(null, true, this);
       // newTable.init(item.getId());
        newTable.setVisible(true);
}                                       
 
    private void nouveauAncestorAdded(javax.swing.event.AncestorEvent evt) {                                      
        // TODO add your handling code here:
    }                                     
 
    private void editerActionPerformed(java.awt.event.ActionEvent evt) {                                       
 
        log.debug("lastidselected " + lastIdSelected);
        TableBercy newTable = new TableBercy(null, true , lastIdSelected , this );
        newTable.setVisible(true);
 
 
    }                                      
 
    private void supprimerActionPerformed(java.awt.event.ActionEvent evt) {                                          
 
                   String temp = Functions.replace(querycountDel, "CODETABLE", this.tablesmodel.getSelectedId());
                   log.debug(temp);
                   int count = 0;
 
                   Connection con = ContextSingleton.getInstance().getConnection();
                   try{
                                Statement s = con.createStatement();
                                ResultSet r = s.executeQuery(temp);
                                r.next();
                                count = r.getInt("nombreInvites") ;
                                r.close();
 
                    }catch(Exception e){
                                log.debug(e.getMessage());
                    }
 
 
 
                   //Si il n'y a pas d'invités à la table alors on peut supprimer
                   if(count == 0){
                           temp = Functions.replace(queryDel, "HOTEID", this.tablesmodel.getSelectedId());
                           log.debug(temp);
 
 
                           try{
                           Statement s = con.createStatement();
                           int r = s.executeUpdate(temp);
                           }
                           catch(Exception e){
                                        log.debug(e.getMessage());
                            }
                              JOptionPane.showMessageDialog(this,
                              "La table "+ this.tablesmodel.getSelectedLibelle() + " a été supprimée",
                              "Application Tribune",
                              JOptionPane.INFORMATION_MESSAGE);
 
                   }else{
 
                           JOptionPane.showMessageDialog(this,
                              "Il y a des invités à la table " + this.tablesmodel.getSelectedLibelle() + ", voulez devez les réaffecter.",
                              "Application Tribune",
                              JOptionPane.ERROR_MESSAGE);
 
                   }
 
                   raffraichir();
    }                                         
 
 
     public void raffraichir() {
        tablesmodel.reload();
        jComboBox1.setSelectedIndex(0);
    }
 
    public javax.swing.JComboBox getComboBox(){
        return jComboBox1;
    }
 
    // Variables declaration - do not modify
    private javax.swing.JButton editer;
    private javax.swing.JComboBox jComboBox1;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JButton nouveau;
    private javax.swing.JButton supprimer;
    // End of variables declaration
 
}

et le Model de ma Jcombox

Code :

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/*
 * EvtComboModel.java
 *
 * Created on 30 novembre 2008, 17:23
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */
 
package com.fft.tribune;
 
import javax.swing.JComboBox;
import javax.swing.ComboBoxModel;
import javax.swing.AbstractListModel;
 
import org.apache.log4j.Logger;
import com.fft.tribune.tools.*;
import java.util.Vector;
 
 
/**
 *
 * @author itrec
 */
public class TablesModel extends AbstractListModel implements ComboBoxModel {
 
    private static final Logger log = Logger.getLogger(EvtComboModel.class);
    private static final String LOG_PROPERTIES_FILE = "log4J.properties";
 
    Vector data = new Vector();
    Vector items = new Vector();
    Object item;
    int indice = 0;
    int closed = 0;
 
    private String query_ = "select hote_id,hote_code,hote_libelle from tp_hote WHERE HOTE_EVT_ID = '";
 
    /**
     * Creates a new instance of EvtComboModel
     */
    public TablesModel() {
        //load();
    }
 
    public int getSize() {
        return data.size();
    }
 
    public Object getElementAt(int val) {
        indice = val;
        Vector v = (Vector)data.elementAt(indice);
        return (Object)v.elementAt(1);
    }
 
 
    public Object getSelectedItem() {
        return (item);
   }
 
 
    public void setSelectedItem(Object obj) {
        item = obj;
    }
 
    public boolean load() {
        data = null;
        data = new Vector();
        log.debug("load()");
        String query = query_ + ContextSingleton.getInstance().getEventId() + "'";
        if (JDBCTool.getInstance().executeQuery(query, data) == false) {
            return false;
        }
 
        indice =  data.size() - 1;
 
        return true;
    }
 
 
    public boolean reload() {
        log.debug("reload()");
        return load();
    }
 
 
    public String getSelectedId() {
        Vector v = (Vector)data.elementAt(indice);
        return ((String)v.elementAt(0));
    }
 
    public String getSelectedCode() {
        Vector v = (Vector)data.elementAt(indice);
        return ((String)v.elementAt(1));
    }
 
    public String getSelectedLibelle() {
        Vector v = (Vector)data.elementAt(indice);
        return ((String)v.elementAt(2));
    }
 
 
    public boolean isSelectedClosed() {
        Vector v = (Vector)data.elementAt(indice);
        String s = (String)v.elementAt(3);
        if (s.equalsIgnoreCase("N"))
            return false;
        return true;
    }
 
    public int getLastClosed() {
        int last = -1;
        for (int i=0; i<data.size(); i++) {
            Vector v = (Vector)data.elementAt(i);
            String s = (String)v.elementAt(3);
            if (s.equalsIgnoreCase("N"))
                last = i;
        }
        return last;
    }
 
}

Lorsque je clique sur Nouveau ou Editer cela lance un JDialog qui contient deux champs:

Code :

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/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
 
/*
 * NewJDialog.java
 *
 * Created on 26 oct. 2009, 18:52:26
 */
 
package com.fft.tribune;
 
import com.fft.tribune.tools.Functions;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;
import javax.swing.JDialog;
import javax.swing.JOptionPane;
import org.apache.log4j.Category;
 
/**
 *
 * @author itrec
 */
public class TableBercy extends javax.swing.JDialog {
 
     static final Category log = Category.getInstance(TableBercy.class);
 
     private String queryInsertt = "INSERT INTO TP_HOTE "+
                                   "SELECT max(HOTE_ID)+1,'VALUECODE','VALUELIBELLE','1','EVENTID'"+
                                   " FROM TP_HOTE";
 
    private String queryEdit = "UPDATE TP_HOTE "+
            "SET HOTE_CODE = 'VALUECODE' , HOTE_LIBELLE = 'VALUELIBELLE' "+
            "WHERE HOTE_ID= HOTEID";
 
    private String queryCheckTable = "SELECT COUNT(*) as nombre FROM  TP_HOTE "+
            "WHERE ((HOTE_CODE = 'CODETABLE' OR HOTE_LIBELLE = 'LIBELLETABLE') AND HOTE_EVT_ID =  "+ ContextSingleton.getInstance().getEventId() + ")";
 
 
   private String query_table = "select hote_id,hote_code,hote_libelle from tp_hote WHERE HOTE_ID = '";
 
 
 
     private String libelle = "";
     private String code = "";
     private String mode = "add";
     private String id = "";
 
     /** A return status code - returned if Cancel button has been pressed */
    public static final int RET_CANCEL = 0;
    /** A return status code - returned if OK button has been pressed */
    public static final int RET_OK = 1;
    private int returnStatus = RET_CANCEL;
 
    private BercyPanel panel = null;
 
 
    /** Creates new form NewJDialog */
    public TableBercy(java.awt.Frame parent, boolean modal,  BercyPanel panel_) {
        super(parent, modal);
        panel = panel_;
        initComponents();
        mode = "add";
    }
 
 
    /** Creates new form NewJDialog */
    public TableBercy(java.awt.Frame parent, boolean modal, String id_ ,  BercyPanel panel_) {
        super(parent, modal);
 
        log.debug("String id_"+ id_);
 
        id = id_;
        mode = "edit";
        initComponents();
        panel = panel_;
 
       String query =  query_table + id + "'" ;
       log.debug(query);
       Connection con = ContextSingleton.getInstance().getConnection();
       try{
                    Statement s = con.createStatement();
                    ResultSet r = s.executeQuery(query);
                    r.next();
                    libelle = r.getString("HOTE_LIBELLE") ;
                    log.debug("libellule"+libelle);
                    code = r.getString("HOTE_CODE") ;
                    log.debug("codation"+code);
                    r.close();
 
        }catch(Exception e){
                    log.debug(e.getMessage());
        }
 
 
 
 
 
        nomtable.setText(libelle);
        codetable.setText(code);
    }
 
 
    /** 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")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {
 
        textField1 = new java.awt.TextField();
        nomtable = new java.awt.TextField();
        label1 = new java.awt.Label();
        jButton1 = new javax.swing.JButton();
        label2 = new java.awt.Label();
        codetable = new java.awt.TextField();
 
        setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
 
        textField1.setText("textField1");
 
        label1.setText("Nom De La Table");
 
        jButton1.setLabel("OK");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                okActionPerformed(evt);
            }
        });
 
        label2.setText("Code De La Table");
 
        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(51, 51, 51)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addComponent(label2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addComponent(codetable, javax.swing.GroupLayout.PREFERRED_SIZE, 115, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(label1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(36, 36, 36)
                        .addComponent(nomtable, javax.swing.GroupLayout.PREFERRED_SIZE, 115, javax.swing.GroupLayout.PREFERRED_SIZE)))
                .addGap(34, 34, 34)
                .addComponent(jButton1)
                .addContainerGap(32, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(nomtable, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(label1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(33, 33, 33)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jButton1)
                    .addComponent(label2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(codetable, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addContainerGap(25, Short.MAX_VALUE))
        );
 
        pack();
    }// </editor-fold>                        
 
    private void okActionPerformed(java.awt.event.ActionEvent evt) {                                   
        // TODO add your handling code here:
 
        String temp = "";
 
 
        this.code = codetable.getText();
        this.libelle = nomtable.getText();
 
        int nombre = 0;
 
        if(code.length() >5){
 
              JOptionPane.showMessageDialog(this,
              "Le code de la table doit être constitué au maximum de 5 caractères.",
              "Application Tribune",
              JOptionPane.INFORMATION_MESSAGE);
 
        }else{
 
                            if(mode.equals("add")){
 
                                        //On regarde si la table n'existe pas pour l'évenement donné
                                       temp = Functions.replace(queryCheckTable, "CODETABLE", code);
                                       temp = Functions.replace(temp, "LIBELLETABLE", libelle);
 
                                       log.debug(temp);
 
                                       Connection con = ContextSingleton.getInstance().getConnection();
                                       try{
                                                    Statement s = con.createStatement();
                                                    ResultSet r = s.executeQuery(temp);
                                                    r.next();
                                                    nombre = r.getInt("nombre") ;
                                                    r.close();
 
                                        }catch(Exception e){
                                                    log.debug(e.getMessage());
                                        }
 
                                        if(nombre==0){
 
                                                    temp = Functions.replace(queryInsertt, "VALUECODE", this.code);
                                                    temp = Functions.replace(temp, "VALUELIBELLE", this.libelle);
                                                    temp = Functions.replace(temp, "EVENTID", ContextSingleton.getInstance().getEventId());
 
                                         }
 
                            }else{ //mode edit
 
 
                                        temp = Functions.replace(queryEdit, "VALUECODE", this.code);
                                        temp = Functions.replace(temp, "VALUELIBELLE", this.libelle);
                                        temp = Functions.replace(temp, "HOTEID", this.id);
 
                            }
 
                                        log.debug(temp);
 
                                    if(nombre==0){
 
                                                 Connection c = ContextSingleton.getInstance().getConnection();
 
                                                try {
                                                    Statement stmt = c.createStatement();
                                                    int resultat = stmt.executeUpdate(temp);
                                                }
 
                                                catch(Exception e){
                                                    System.out.println("exception due a la requete" + e.getMessage());
                                                }
 
                                                  doClose(RET_OK);
                                    }else{
                                                  //Il existe déjà une table portant le meme nom ou meme code
                                                  JOptionPane.showMessageDialog(this,
                                                  "La table "+ libelle + " ou le code table " + code + " existe déjà",
                                                  "Application Tribune",
                                                  JOptionPane.INFORMATION_MESSAGE);
                                    }
 
 
        }
 
                 this.panel.raffraichir();
 
 
    }                                  
 
     private void doClose(int retStatus) {
        returnStatus = retStatus;
        setVisible(false);
        dispose();
    }
 
 
    /**
    * @param args the command line arguments
    */
 
 
    // Variables declaration - do not modify                     
    private java.awt.TextField codetable;
    private javax.swing.JButton jButton1;
    private java.awt.Label label1;
    private java.awt.Label label2;
    private java.awt.TextField nomtable;
    private java.awt.TextField textField1;
    // End of variables declaration                   
 
}

Et quand je clique sur Supprimer , ca supprime l'option active du menu déroulant.

Actuellement , j'ai un problème lorsque j'ajoute ou édite ou supprimer un codee , ca concerne le refresh de mon menu deroulant.
J'appelle pourtant la fonction :

tablesmodel.reload();

Mais je suis obligé de cliquer sur le menu déroulant pour que ca se fasse , pourquoi?

**sinok** · 29/10/2009, 15h55

Ta requête se fait dans un thread? (en général on évite de faire des actions longues dans le thread de Swing également appelé EDT cf http://gfx.developpez.com/tutoriel/j...ing-threading/ )

Sinon pense à appeler la méthode fireTableDataChanged dans ton load afin de notifier à la JTable que les données ont changé.