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/*
 * Copyright 2018-2024 guerlab.net and other contributors.
 *
 * Licensed under the GNU LESSER GENERAL PUBLIC LICENSE, Version 3 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.gnu.org/licenses/lgpl-3.0.html
 *
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.guerlab.cloud.commons.util;

import java.util.Objects;

import org.springframework.lang.Nullable;

/**
 * 更新工具类.
 *
 * @author guer
 */
@SuppressWarnings("unused")
public final class UpdateUtils {

	private UpdateUtils() {

	}

	/**
	 * 获取更新内容，当新旧内容一致时返回null，否则返回新内容.
	 *
	 * @param newData 新内容
	 * @param oldData 旧内容
	 * @param      内容格式
	 * @return 更新内容
	 */
	@Nullable
	public static  T getUpdateValue(T newData, T oldData) {
		return Objects.equals(newData, oldData) ? null : newData;
	}
}