ConfigProperties.java

package net.hbase.secondaryindex.util;

import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

public class ConfigProperties extends Properties {

	private static final long serialVersionUID = -1851097272122935390L;

	public static final String CONFIG_NAME_MAPRED_QUEUE_NAME = "mapred.job.queue.name";
	public static final String CONFIG_NAME_HBASE_MASTER = "hbase.master";
	public static final String CONFIG_NAME_HBASE_ZOOKEEPER_QUORUM = "hbase.zookeeper.quorum";
	public static final String CONFIG_NAME_HBASE_REGIONSERVER_NUM = "hbase.regionserver.num";
	public static final String CONFIG_NAME_HBASE_ZOOKEEPER_PROPRERTY_CLIENTPORT = "hbase.zookeeper.property.clientPort";

	/**
	 * @Constructor
	 * @param filePath
	 *            is the class path to the config file
	 */
	protected ConfigProperties(final String filePath) {
		final InputStream inStream = ConfigProperties.class
				.getResourceAsStream(filePath);
		try {
			load(inStream);
		} catch (final IOException e) {
			e.printStackTrace();
			throw new NullPointerException("Failed to load config file: "
					+ filePath + ", error: " + e.getMessage());
		} finally {
			if (inStream != null) {
				try {
					inStream.close();
				} catch (final IOException e) {
					// do nothing
				}
			}

		}
	}

	public int getInt(final String propertyName, final int defaultValue) {
		int propertyValue = defaultValue;

		final String valueStr = getProperty(propertyName);
		try {
			propertyValue = Integer.parseInt(valueStr);
		} catch (final Exception e) {
			// do nothing, just return the default value;
		}

		return propertyValue;
	}

	public float getFloat(final String propertyName, final float defaultValue) {
		float propertyValue = defaultValue;

		final String valueStr = getProperty(propertyName);
		try {
			propertyValue = Float.parseFloat(valueStr);
		} catch (final Exception e) {
			// do nothing, just return the default value;
		}

		return propertyValue;
	}

	public double getDouble(final String propertyName, final double defaultValue) {
		double propertyValue = defaultValue;

		final String valueStr = getProperty(propertyName);
		try {
			propertyValue = Double.parseDouble(valueStr);
		} catch (final Exception e) {
			// do nothing, just return the default value;
		}

		return propertyValue;
	}
}