Package net.sourceforge.squirrel_sql.plugins.dataimport.action

Source Code of net.sourceforge.squirrel_sql.plugins.dataimport.action.ImportTableDataCommand

package net.sourceforge.squirrel_sql.plugins.dataimport.action;
/*
* Copyright (C) 2007 Thorsten Mürell
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

import java.awt.BorderLayout;
import java.io.File;
import java.io.IOException;
import java.sql.SQLException;
import java.util.prefs.Preferences;

import javax.swing.JDialog;
import javax.swing.JFileChooser;
import javax.swing.JOptionPane;

import net.sourceforge.squirrel_sql.client.gui.IOkClosePanelListener;
import net.sourceforge.squirrel_sql.client.gui.OkClosePanel;
import net.sourceforge.squirrel_sql.client.gui.OkClosePanelEvent;
import net.sourceforge.squirrel_sql.client.gui.desktopcontainer.DialogWidget;
import net.sourceforge.squirrel_sql.client.session.ISession;
import net.sourceforge.squirrel_sql.fw.gui.GUIUtils;
import net.sourceforge.squirrel_sql.fw.gui.DialogUtils;
import net.sourceforge.squirrel_sql.fw.sql.ITableInfo;
import net.sourceforge.squirrel_sql.fw.sql.TableColumnInfo;
import net.sourceforge.squirrel_sql.fw.util.ICommand;
import net.sourceforge.squirrel_sql.fw.util.StringManager;
import net.sourceforge.squirrel_sql.fw.util.StringManagerFactory;
import net.sourceforge.squirrel_sql.fw.util.log.ILogger;
import net.sourceforge.squirrel_sql.fw.util.log.LoggerController;
import net.sourceforge.squirrel_sql.plugins.dataimport.ImportFileType;
import net.sourceforge.squirrel_sql.plugins.dataimport.gui.ImportFileDialog;
import net.sourceforge.squirrel_sql.plugins.dataimport.importer.FileImporterFactory;
import net.sourceforge.squirrel_sql.plugins.dataimport.importer.IFileImporter;

/**
* This command shows the necessary dialogs to import a file.
*
* @author Thorsten Mürell
*/
public class ImportTableDataCommand implements ICommand {
  private static final StringManager stringMgr =
    StringManagerFactory.getStringManager(ImportTableDataCommand.class);

   /** Logger for this class. */
   private final static ILogger s_log =
       LoggerController.createLogger(ImportTableDataCommand.class);
 
  private static final String PREFS_KEY_LAST_IMPORT_DIRECTORY = "squirrelsql_dataimport_last_import_directory";


  private ISession session;
  private ITableInfo table;


  /**
   * The constructor.
   *
   * @param session The session to work in
   * @param table The table to import the data
   */
  public ImportTableDataCommand(ISession session, ITableInfo table) {
    super();
    this.session = session;
    this.table = table;
  }

  /**
   * This is the command action.
   *
   * It shows a file open dialog and then the specific import options for the file
   * importer.
   *
   * Then the column mapping dialog is shown.
   */
  public void execute() {
    // Show a warning dialog and let the user confirm it.
    if (JOptionPane.showConfirmDialog(session.getApplication().getMainFrame(),
        stringMgr.getString("ImportTableDataCommand.truncateWarning"),
        stringMgr.getString("ImportTableDataCommand.warning"),
        JOptionPane.YES_NO_OPTION,
        JOptionPane.WARNING_MESSAGE,
        null) != JOptionPane.YES_OPTION)
      return;
     
    JFileChooser openFile = new JFileChooser(Preferences.userRoot().get(PREFS_KEY_LAST_IMPORT_DIRECTORY, System.getProperty("user.home")));

    int res = openFile.showOpenDialog(session.getApplication().getMainFrame());

    if (res == JFileChooser.APPROVE_OPTION) {
      File f = openFile.getSelectedFile();

      if(null != f.getParent()){
        Preferences.userRoot().put(PREFS_KEY_LAST_IMPORT_DIRECTORY, f.getParent());
      }

      try {
        TableColumnInfo[] columns = session.getMetaData().getColumnInfo(table);

        ImportFileType type = determineType(f);



        IFileImporter importer = FileImporterFactory.createImporter(type, f);

        if (importer.getConfigurationPanel() != null) {
          //i18n[ImportTableDataCommand.settingsDialogTitle=Import file settings]
          final JDialog dialog = new JDialog(session.getApplication().getMainFrame(), stringMgr.getString("ImportTableDataCommand.settingsDialogTitle"), true);
          StateListener dialogState = new StateListener(dialog);
          dialog.setLayout(new BorderLayout());
          dialog.add(importer.getConfigurationPanel(), BorderLayout.CENTER);
          OkClosePanel buttons = new OkClosePanel();
          //i18n[ImportTableDataCommand.cancel=Cancel]
          buttons.getCloseButton().setText(stringMgr.getString("ImportTableDataCommand.cancel"));
          buttons.addListener(dialogState);
          dialog.add(buttons, BorderLayout.SOUTH);
          dialog.pack();
          GUIUtils.centerWithinParent(dialog);
          dialog.setVisible(true);
          if (!dialogState.isOkPressed()) {
            return;
          }
        }


        final ImportFileDialog importFileDialog = new ImportFileDialog(session, importer, table, columns);

        importFileDialog.setPreviewData(importer.getPreview(10));

        GUIUtils.processOnSwingEventThread(new Runnable() {
          public void run() {
            session.getApplication().getMainFrame().addWidget(importFileDialog);
            importFileDialog.moveToFront();
            DialogWidget.centerWithinDesktop(importFileDialog);
            importFileDialog.setVisible(true);
          }
        }, true);

      } catch (SQLException e) {
        s_log.error("execute: unexpected exception - "+e.getMessage(), e);
        //i18n[ImportTableDataCommand.sqlErrorOccured=An error occured while reading database data.]
        //i18n[ImportTableDataCommand.error=Error]
        JOptionPane.showMessageDialog(session.getApplication().getMainFrame(), stringMgr.getString("ImportTableDataCommand.sqlErrorOccured"), stringMgr.getString("ImportTableDataCommand.error"), JOptionPane.ERROR_MESSAGE);
      } catch (IOException e) {
        s_log.error("execute: unexpected exception - "+e.getMessage(), e);
        //i18n[ImportTableDataCommand.ioErrorOccured=An error occured while reading import file data.]
        JOptionPane.showMessageDialog(session.getApplication().getMainFrame(), stringMgr.getString("ImportTableDataCommand.ioErrorOccured"), stringMgr.getString("ImportTableDataCommand.error"), JOptionPane.ERROR_MESSAGE);
      }
    }
  }

  private ImportFileType determineType(File f) {
    // TODO: Implement this better
    if (f.getName().toLowerCase().endsWith("xls")) {
      if (s_log.isInfoEnabled()) {
        s_log.info("determineType: filename ("+f.getName()+") ends with 'xls'.  Assuming it is an " +
            "Excel spreadsheet");
      }
      return ImportFileType.XLS;
    }
    if (s_log.isInfoEnabled()) {
      s_log.info("determineType: filename ("+f.getName()+") doesn't end with 'xls'.  Assuming it is a " +
          "CSV file");
    }   
    return ImportFileType.CSV;
  }

  private class StateListener implements IOkClosePanelListener {
    private boolean okPressed = false;
    private JDialog dialog = null;

    /**
     * The constructor
     *
     * @param dialog The dialog
     */
    public StateListener(JDialog dialog) {
      this.dialog = dialog;
    }

    /**
     * Invoked on cancel press
     *
     * @param evt The event
     */
    public void cancelPressed(OkClosePanelEvent evt) { /* Not needed */ }

    /**
     * Invoked on close press
     *
     * @param evt The event
     */
    public void closePressed(OkClosePanelEvent evt) {
      okPressed = false;
      dialog.dispose();
    }

    /**
     * Invoked on ok press
     *
     * @param evt The event
     */
    public void okPressed(OkClosePanelEvent evt) {
      okPressed = true;
      dialog.dispose();
    }

    /**
     * Returns if the OK button was pressed.
     *
     * @return true or false
     */
    public boolean isOkPressed() {
      return okPressed;
    }
  }

}
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