Java tutorial
/** * This file is part of Archiv-Editor. * * The software Archiv-Editor serves as a client user interface for working with * the Person Data Repository. See: pdr.bbaw.de * * The software Archiv-Editor was developed at the Berlin-Brandenburg Academy * of Sciences and Humanities, Jgerstr. 22/23, D-10117 Berlin. * www.bbaw.de * * Copyright (C) 2010-2013 Berlin-Brandenburg Academy * of Sciences and Humanities * * The software Archiv-Editor was developed by @author: Christoph Plutte. * * Archiv-Editor is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * Archiv-Editor 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with Archiv-Editor. * If not, see <http://www.gnu.org/licenses/lgpl-3.0.html>. */ package org.bbaw.pdr.ae.backup.commands; import java.lang.reflect.InvocationTargetException; import org.bbaw.pdr.ae.common.AEConstants; import org.bbaw.pdr.ae.common.NLMessages; import org.bbaw.pdr.ae.control.core.UserRichtsChecker; import org.bbaw.pdr.ae.control.facade.Facade; import org.bbaw.pdr.ae.control.interfaces.IDBManager; import org.bbaw.pdr.ae.control.interfaces.IPdrIdService; import org.eclipse.core.commands.ExecutionEvent; import org.eclipse.core.commands.ExecutionException; import org.eclipse.core.commands.IHandler; import org.eclipse.core.commands.IHandlerListener; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Status; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.dialogs.ProgressMonitorDialog; import org.eclipse.jface.operation.IRunnableWithProgress; import org.eclipse.swt.widgets.DirectoryDialog; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.ui.IWorkbench; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.handlers.HandlerUtil; import org.eclipse.ui.progress.UIJob; /** handle for command create empty database. * @author Christoph Plutte * */ public class CreateEmptyDBHandler implements IHandler { /** message return code.*/ private int _messageReturnCode; /** selected directory.*/ private String _selectedDirectory; /** user rights checker.*/ private UserRichtsChecker _urChecker = new UserRichtsChecker(); /** ten.*/ private static final int TEN = 10; /** fifty.*/ private static final int FIFTY = 50; /** hundred.*/ private static final int HUNDRED = 100; @Override public void addHandlerListener(final IHandlerListener handlerListener) { } @Override public void dispose() { } @Override public final Object execute(final ExecutionEvent event) throws ExecutionException { if (!_urChecker.isUserGuest()) { Shell activeShell = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(); ProgressMonitorDialog dialog = new ProgressMonitorDialog(activeShell); try { dialog.run(true, true, new IRunnableWithProgress() { @Override public void run(final IProgressMonitor monitor) { monitor.beginTask("Delete Data from Database and create new and empty Databases", HUNDRED); boolean backupSuccessfull = false; UIJob job = new UIJob("Feedbackup") { @Override public IStatus runInUIThread(final IProgressMonitor monitor) { IWorkbench workbench = PlatformUI.getWorkbench(); Display display = workbench.getDisplay(); Shell shell = new Shell(display); String message = NLMessages.getString("Handler_empty_db_warning"); message += "\n" + NLMessages.getString("Handler_empty_db_warning2"); MessageDialog messageDialog = new MessageDialog(shell, NLMessages.getString("Handler_empty_db_title"), null, message, MessageDialog.INFORMATION, new String[] { NLMessages.getString("Handler_yes"), //$NON-NLS-1$ NLMessages.getString("Handler_no") }, //$NON-NLS-1$ 1); _messageReturnCode = messageDialog.open(); return Status.OK_STATUS; } }; job.setUser(true); job.schedule(); try { job.join(); } catch (InterruptedException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } monitor.worked(TEN); if (_messageReturnCode == 0) { job = new UIJob("Feedbackup") { @Override public IStatus runInUIThread(final IProgressMonitor monitor) { IWorkbench workbench = PlatformUI.getWorkbench(); Display display = workbench.getDisplay(); Shell shell = new Shell(display); String message = NLMessages.getString("WriteLocalBackupHandler_warning0"); //$NON-NLS-1$ message += NLMessages.getString("WriteLocalBackupHandler_warning1"); //$NON-NLS-1$ MessageDialog messageDialog = new MessageDialog(shell, NLMessages.getString("WriteLocalBackupHandler_title"), null, //$NON-NLS-1$ message, MessageDialog.WARNING, new String[] { NLMessages.getString("Handler_yes"), //$NON-NLS-1$ NLMessages.getString("Handler_no") }, //$NON-NLS-1$ 1); _messageReturnCode = messageDialog.open(); return Status.OK_STATUS; } }; job.setUser(true); job.schedule(); try { job.join(); } catch (InterruptedException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } monitor.worked(TEN); if (_messageReturnCode == 0) { job = new UIJob("Feedbackup") { @Override public IStatus runInUIThread(final IProgressMonitor monitor) { IWorkbench workbench = PlatformUI.getWorkbench(); Display display = workbench.getDisplay(); Shell shell = new Shell(display); DirectoryDialog directoryDialog = new DirectoryDialog(shell); directoryDialog.setFilterPath("/"); //$NON-NLS-1$ directoryDialog.setMessage( NLMessages.getString("WriteLocalBackupHandler_message")); //$NON-NLS-1$ directoryDialog .setText(NLMessages.getString("WriteLocalBackupHandler_title2")); //$NON-NLS-1$ _selectedDirectory = directoryDialog.open(); return Status.OK_STATUS; } }; job.setUser(true); job.schedule(); try { job.join(); } catch (InterruptedException e1) { e1.printStackTrace(); } monitor.worked(TEN); if (_selectedDirectory != null) { IDBManager dbm = Facade.getInstanz().getDBManager(); try { dbm.writeToLocalBackup(_selectedDirectory); monitor.worked(FIFTY); backupSuccessfull = true; job = new UIJob("Feedbackup") { @Override public IStatus runInUIThread(final IProgressMonitor monitor) { IWorkbench workbench = PlatformUI.getWorkbench(); Display display = workbench.getDisplay(); Shell shell = new Shell(display); String info = NLMessages .getString("Commands_message_local_backup_success"); MessageDialog infoDialog = new MessageDialog(shell, NLMessages.getString("Commands_title_local_backup_success"), null, info, MessageDialog.INFORMATION, new String[] { NLMessages.getString("Handler_ok") }, 0); //$NON-NLS-1$ infoDialog.open(); return Status.OK_STATUS; } }; job.setUser(true); job.schedule(); try { job.join(); } catch (InterruptedException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } monitor.worked(TEN); } catch (Exception e) { backupSuccessfull = false; showBackupErrorDialog(); e.printStackTrace(); } } } if (new UserRichtsChecker().isUserPDRAdmin() || backupSuccessfull) { IDBManager dbm = Facade.getInstanz().getDBManager(); try { dbm.createEmptyDB("person"); monitor.worked(TEN); dbm.createEmptyDB("aspect"); monitor.worked(TEN); dbm.createEmptyDB("reference"); monitor.worked(TEN); IPdrIdService idService = Facade.getInstanz().getIdService(); try { idService.clearAllUpdateStates(); } catch (Exception e1) { // TODO Auto-generated catch block e1.printStackTrace(); } try { idService.setUpdateTimeStamp(AEConstants.FIRST_EVER_UPDATE_TIMESTAMP); } catch (Exception e1) { // TODO Auto-generated catch block e1.printStackTrace(); } try { idService.clearAllUpdateStates(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } job = new UIJob("Feedbackup") { @Override public IStatus runInUIThread(final IProgressMonitor monitor) { Facade.getInstanz().refreshAllData(); IWorkbench workbench = PlatformUI.getWorkbench(); Display display = workbench.getDisplay(); Shell shell = new Shell(display); String info = NLMessages.getString("Handler_empty_db_successful"); MessageDialog infoDialog = new MessageDialog(shell, NLMessages.getString("Handler_empty_db_successful"), null, info, MessageDialog.INFORMATION, new String[] { NLMessages.getString("Handler_ok") }, 0); //$NON-NLS-1$ infoDialog.open(); return Status.OK_STATUS; } }; job.setUser(true); job.schedule(); monitor.worked(TEN); } catch (Exception e) { showEmptyErrorDialog(); e.printStackTrace(); } } } monitor.done(); } }); } catch (InvocationTargetException e) { showEmptyErrorDialog(); e.printStackTrace(); } catch (InterruptedException e) { showEmptyErrorDialog(); e.printStackTrace(); } } else { MessageDialog.openInformation(HandlerUtil.getActiveWorkbenchWindow(event).getShell(), NLMessages.getString("Commandsr_guest_user"), NLMessages.getString("Commandsr_guest_user_denied")); //$NON-NLS-1$ } return null; } /** * show error dialog if error occured. */ protected final void showEmptyErrorDialog() { UIJob job = new UIJob("Feedbackup") { @Override public IStatus runInUIThread(final IProgressMonitor monitor) { Facade.getInstanz().refreshAllData(); IWorkbench workbench = PlatformUI.getWorkbench(); Display display = workbench.getDisplay(); Shell shell = new Shell(display); String info = NLMessages.getString("Handler_empty_db_error"); MessageDialog infoDialog = new MessageDialog(shell, NLMessages.getString("Handler_empty_db_error_title"), null, info, MessageDialog.INFORMATION, new String[] { NLMessages.getString("Handler_ok") }, 0); //$NON-NLS-1$ infoDialog.open(); return Status.OK_STATUS; } }; job.setUser(true); job.schedule(); } @Override public final boolean isEnabled() { // TODO Auto-generated method stub return true; } @Override public final boolean isHandled() { // TODO Auto-generated method stub return true; } @Override public void removeHandlerListener(final IHandlerListener handlerListener) { // TODO Auto-generated method stub } /** * show backup error dialog. */ private void showBackupErrorDialog() { UIJob job = new UIJob("Feedbackup") { @Override public IStatus runInUIThread(final IProgressMonitor monitor) { IWorkbench workbench = PlatformUI.getWorkbench(); Display display = workbench.getDisplay(); Shell shell = new Shell(display); String info = NLMessages.getString("Handler_backup_error"); MessageDialog infoDialog = new MessageDialog(shell, NLMessages.getString("Handler_backup_error_title"), null, info, MessageDialog.INFORMATION, new String[] { NLMessages.getString("Handler_ok") }, 0); //$NON-NLS-1$ infoDialog.open(); return Status.OK_STATUS; } }; job.setUser(true); job.schedule(); try { job.join(); } catch (InterruptedException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } } }