Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package ro.nextreports.designer.util; import javax.swing.JOptionPane; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import ro.nextreports.designer.Globals; import ro.nextreports.designer.action.SaveAction; import ro.nextreports.designer.datasource.DefaultDataSourceManager; import ro.nextreports.designer.datasource.exception.ConnectionException; import ro.nextreports.engine.querybuilder.sql.dialect.Dialect; import ro.nextreports.engine.querybuilder.sql.dialect.ConnectionUtil; // public class MessageUtil { private static final Log LOG = LogFactory.getLog(MessageUtil.class); public static boolean showReconnect() { Dialect dialect = null; try { dialect = Globals.getDialect(); } catch (Exception e1) { e1.printStackTrace(); } // current connection is broken if ((dialect == null) || !ConnectionUtil.isValidConnection(Globals.getConnection(), dialect)) { // try to create a new connection (if a connection pool is used, current connection can expire after some time) try { LOG.warn(".... Connection was lost. Try to recreate the database connection."); Globals.createConnection(DefaultDataSourceManager.getInstance().getConnectedDataSource()); } catch (ConnectionException e) { LOG.warn(".... Connection recreation was not possible."); LOG.error(e.getMessage(), e); // connection is really down int option = JOptionPane.showOptionDialog(Globals.getMainFrame(), I18NSupport.getString("connection.broken"), I18NSupport.getString("error"), JOptionPane.OK_CANCEL_OPTION, JOptionPane.ERROR_MESSAGE, null, new String[] { I18NSupport.getString("save"), I18NSupport.getString("base.dialog.close") }, I18NSupport.getString("base.dialog.close")); if (option != JOptionPane.OK_OPTION) { return true; } else { // forced save (we should be able to save the report anyway to not lost the work) LOG.warn(".... Forced save was called."); new SaveAction(true).actionPerformed(null); } return true; } } return false; } }