EnumUtils.java

/*
 * Copyright (C) 2013 MILLAU Julien
 *
 * 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.github.devnied.emvnfccard.utils;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.github.devnied.emvnfccard.model.enums.IKeyEnum;

/**
 * Utils class which provided methods to manipulate Enum
 * 
 * @author MILLAU Julien
 */
public final class EnumUtils {

	/**
	 * Class logger
	 */
	private static final Logger LOGGER = LoggerFactory.getLogger(EnumUtils.class);

	/**
	 * Get the value of and enum from his key
	 * 
	 * @param pKey
	 *            key to find
	 * @param pClass
	 *            Enum class
	 * @return Enum instance of the specified key or null otherwise
	 */
	@SuppressWarnings("unchecked")
	public static <T extends IKeyEnum> T getValue(final int pKey, final Class<T> pClass) {
		for (IKeyEnum val : pClass.getEnumConstants()) {
			if (val.getKey() == pKey) {
				return (T) val;
			}
		}
		LOGGER.error("Unknow value:" + pKey + " for Enum:" + pClass.getName());
		return null;
	}

	/**
	 * Private constructor
	 */
	private EnumUtils() {
	}
}