com.tekstosense.opennlp.config.Config.java Source code

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Here is the source code for com.tekstosense.opennlp.config.Config.java

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/*******************************************************************************
 * Copyright (c) 2016, TekstoSense and/or its affiliates. All rights reserved.
 *
 * 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.
 *******************************************************************************/

package com.tekstosense.opennlp.config;

import org.apache.commons.configuration2.Configuration;
import org.apache.commons.configuration2.FileBasedConfiguration;
import org.apache.commons.configuration2.PropertiesConfiguration;
import org.apache.commons.configuration2.builder.FileBasedConfigurationBuilder;
import org.apache.commons.configuration2.builder.fluent.Parameters;
import org.apache.commons.configuration2.ex.ConfigurationException;
import org.apache.commons.configuration2.io.ClasspathLocationStrategy;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

/**
 * The Class Config.
 * @author TekstoSense
 */
public class Config {

    /** The configuration. */
    private Configuration configuration;
    private static final String TEKSTO_HOME = "TEKSTO_HOME";

    /** The Constant LOG. */
    private static final Logger LOG = LogManager.getLogger(Config.class);
    private static final String MODEL_PATH = "ModelPath";

    /**
     * Gets the configuration.
     *
     * @return the configuration
     */
    public static Configuration getConfiguration() {
        return ConfigLoader.INSTANCE.configuration;
    }

    /**
     * The Class ConfigLoader.
     */
    private static class ConfigLoader {

        /** The instance. */
        private static Config INSTANCE = new Config();
    }

    /**
     * Instantiates a new config.
     */
    private Config() {
        try {
            Parameters params = new Parameters();
            FileBasedConfigurationBuilder<FileBasedConfiguration> builder = new FileBasedConfigurationBuilder<FileBasedConfiguration>(
                    PropertiesConfiguration.class);
            builder.configure(params.fileBased().setFileName("nlp.properties")
                    .setLocationStrategy(new ClasspathLocationStrategy()));
            configuration = builder.getConfiguration();
            // Adding TEKSTO_HOME path to Configuration
            String homePath = System.getenv(TEKSTO_HOME);
            if (homePath != null && !homePath.isEmpty()) {
                configuration.setProperty(MODEL_PATH, homePath + "/Models");
            }
        } catch (ConfigurationException e) {
            LOG.error(e, e);
        }
    }
}