info.halo9pan.word2vec.hadoop.conf.Parameters.java Source code

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Here is the source code for info.halo9pan.word2vec.hadoop.conf.Parameters.java

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/**
 * The MIT License (MIT)
 * 
 * Copyright (c) 2015 Halo9Pan
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package info.halo9pan.word2vec.hadoop.conf;

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 enum Parameters {

    INSTANCE;

    private static Logger logger = LoggerFactory.getLogger(Parameters.class);

    private static final String DEFAULT_CONFIGURATION_FILE = "parameters.properties";
    private static final String PARAMETER_KEY_ALPHA = "alpha";
    private static final String PARAMETER_KEY_WINDOW = "window";

    private static final float PARAMETER_DEFAULT_ALPHA = 0.025f;
    private static final int PARAMETER_DEFAULT_WINDOW = 5;

    private Configuration configuration;

    private Parameters() {
        initialize();
    }

    public void initialize() {
        this.initialize(DEFAULT_CONFIGURATION_FILE);
    }

    public void initialize(String fileName) {
        try {
            if (fileName == null) {
                fileName = DEFAULT_CONFIGURATION_FILE;
            }
            this.configuration = new PropertiesConfiguration(fileName);
        } catch (ConfigurationException e) {
            logger.error("Can't initialize the properties configuration.");
            throw new IllegalArgumentException(e);
        }
    }

    /**
     * 
     * @return
     */
    public float getAlpha() {
        return this.configuration.getFloat(PARAMETER_KEY_ALPHA, PARAMETER_DEFAULT_ALPHA);
    }

    /**
     * ??
     * @return
     */
    public int getWindow() {
        return this.configuration.getInt(PARAMETER_KEY_WINDOW, PARAMETER_DEFAULT_WINDOW);
    }

}