it.polimi.deib.rsp_services_csparql.configuration.Config.java Source code

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Here is the source code for it.polimi.deib.rsp_services_csparql.configuration.Config.java

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/*******************************************************************************
 * Copyright 2014 DEIB - Politecnico di Milano
 *  
 * Marco Balduini (marco.balduini@polimi.it)
 * Emanuele Della Valle (emanuele.dellavalle@polimi.it)
 * 
 * Licensed 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.
 * 
 * This work was partially supported by the European project LarKC (FP7-215535) and by the European project MODAClouds (FP7-318484)
 ******************************************************************************/
package it.polimi.deib.rsp_services_csparql.configuration;

import java.util.Iterator;

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

public class Config {
    private static Config _instance = null;
    private static final Logger logger = LoggerFactory.getLogger(Config.class);

    private static Configuration config;

    private Config(String propertiesFilePath) {
        try {
            config = new PropertiesConfiguration(propertiesFilePath);
            for (Iterator<String> iterator = config.getKeys(); iterator.hasNext();) {
                String property = iterator.next();
                String sysValue = System.getProperty(property);
                if (sysValue != null)
                    config.setProperty(property, sysValue);
            }
        } catch (ConfigurationException e) {
            logger.error("Error while reading the configuration file", e);
        }
    }

    public static void initialize(String propertiesFilePath) {
        _instance = new Config(propertiesFilePath);
    }

    public static Config getInstance() throws Exception {
        if (_instance == null)
            throw new Exception("Please initialize the configuration object at server startup");
        return _instance;
    }

    public String getInferenceRulesFilePath() {
        return config.getString("csparql_engine.inference_rule_file");
    }

    public String getInferenceEntailmentRegime() {
        return config.getString("csparql_engine.inference_entailment_regime");
    }

    public boolean getActivateInference() {
        return config.getBoolean("csparql_engine.activate_inference");
    }

    public String getServerVersion() {
        return config.getString("csparql_server.version");
    }

    public int getServerPort() {
        return config.getInt("csparql_server.port");
    }

    public String getHostName() {
        if (config.getString("csparql_server.host_name").endsWith("/"))
            return config.getString("csparql_server.host_name");
        else
            return config.getString("csparql_server.host_name") + "/";
    }

    public boolean getEnableTSFunction() {
        return config.getBoolean("csparql_engine.enable_timestamp_function");
    }

    public boolean getSendEmptyResultsProperty() {
        return config.getBoolean("csparql_engine.send_empty_results");
    }

    public String getResourcesPath() {
        return config.getString("rsp_server.static_resources.path");
    }
}