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Provides support for implementing Protempa backends using the Java ServiceLoader mechanism.

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/*
 * #%L
 * Protempa Commons Backend Provider
 * %%
 * Copyright (C) 2012 - 2013 Emory University
 * %%
 * 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.
 * #L%
 */
package org.protempa.bp.commons;

import java.util.ResourceBundle;
import java.util.logging.Logger;

/**
 *
 * @author Andrew Post
 */
class CommonsUtil {
    private static class LazyResourceBundleHolder {
		private static ResourceBundle instance = ResourceBundle
				.getBundle("Messages");
	}

	/**
	 * Gets the messages for this project's resource bundle.
	 *
	 * @return a {@link ResourceBundle}.
	 */
	static ResourceBundle resourceBundle() {
		return LazyResourceBundleHolder.instance;
	}

    private static class LazyLoggerHolder {
		private static Logger instance = Logger.getLogger(CommonsUtil.class
				.getPackage().getName());
	}

	/**
	 * Gets the logger for this package.
	 *
	 * @return a {@link Logger} object.
	 */
	static Logger logger() {
		return LazyLoggerHolder.instance;
	}
}