Java tutorial
/* * Copyright (C) 2015 Stephan Grotz - stephan@myopentrader.org * * 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 3 of the License, or * (at your option) 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, see <http://www.gnu.org/licenses/>. * */ package org.mot.common.tools; import org.apache.commons.configuration.Configuration; import org.apache.commons.configuration.ConfigurationException; import org.apache.commons.configuration.DatabaseConfiguration; import org.apache.commons.configuration.PropertiesConfiguration; import org.apache.commons.dbcp2.BasicDataSource; import org.mot.common.db.DatabaseConnectionFactory; public class PropertiesFactory { private static PropertiesFactory instance; private String configDir; private DatabaseConnectionFactory dcf; private PropertiesFactory() { } public static PropertiesFactory getInstance() { if (instance == null) { instance = new PropertiesFactory(); } return instance; } public String getConfigDir() { return configDir; } public void setConfigDir(String configDir) { this.configDir = configDir; } public Configuration getConfiguration(String filename) { Configuration config = null; if (dcf.isDatabaseConfigurationEnabled()) { // If set to true, get the properties from the database config = this.getDatabaseConfiguration(); } else { config = this.getFileConfiguration(filename); } return config; } private Configuration getDatabaseConfiguration() { Configuration config = null; BasicDataSource bds = dcf.getDataSource(); config = new DatabaseConfiguration(bds, "configuration", "property", "value"); return config; } private Configuration getFileConfiguration(String filename) { Configuration config = null; // Read the properties from file try { config = new PropertiesConfiguration(this.getConfigDir() + "/" + filename); } catch (ConfigurationException e) { // TODO Auto-generated catch block e.printStackTrace(); } return config; } }