occi.config.OcciConfig.java Source code

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Here is the source code for occi.config.OcciConfig.java

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/**
 * Copyright (C) 2010-2011 Sebastian Heckmann, Sebastian Laag
 *
 * Contact Email: <sebastian.heckmann@udo.edu>, <sebastian.laag@udo.edu>
 *
 * Licensed under the GNU LESSER GENERAL PUBLIC LICENSE, Version 3.0 (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.gnu.org/licenses/lgpl-3.0.txt
 *
 * 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 occi.config;

import java.net.URL;

import org.apache.commons.configuration.Configuration;
import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.ConfigurationFactory;
import org.apache.commons.configuration.XMLConfiguration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * OcciConfig singleton class. It saves all occi properties. 
 * 
 * @author Sebastian Laag
 * @author Sebastian Heckmann
 *
 */
public class OcciConfig extends XMLConfiguration {
    private static final long serialVersionUID = 1L;
    private static final Logger LOGGER = LoggerFactory.getLogger(OcciConfig.class);
    /**
     * Instance of OcciConfig
     */
    private static OcciConfig instance = null;
    private static ConfigurationFactory factory;
    /**
     * Configuration for all occi properties
     */
    public Configuration config;

    private OcciConfig() {
        factory = new ConfigurationFactory();
        // load configuration file
        URL configURL = getClass().getResource("/conf/config.xml");
        factory.setConfigurationURL(configURL);
        try {
            // pick up configuration
            config = factory.getConfiguration();
        } catch (ConfigurationException e) {
            LOGGER.error("Failed to load config file.");
        }
    }

    public static OcciConfig getInstance() {
        if (instance == null) {
            // create OcciConfig instance
            instance = new OcciConfig();
        }
        return instance;
    }

    public static void main(String[] args) {
        new OcciConfig();
    }
}