001/*
002 *    Copyright 2024-2025, Warm-Flow (290631660@qq.com).
003 *
004 *    Licensed under the Apache License, Version 2.0 (the "License");
005 *    you may not use this file except in compliance with the License.
006 *    You may obtain a copy of the License at
007 *
008 *       https://www.apache.org/licenses/LICENSE-2.0
009 *
010 *    Unless required by applicable law or agreed to in writing, software
011 *    distributed under the License is distributed on an "AS IS" BASIS,
012 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *    See the License for the specific language governing permissions and
014 *    limitations under the License.
015 */
016package org.dromara.warm.flow.core.utils;
017
018import java.util.function.Supplier;
019
020/**
021 * Object 工具类
022 *
023 * @author warm
024 * @since 2023/5/18 9:42
025 */
026public class ObjectUtil {
027
028    /**
029     * 判断一个对象是否为空
030     *
031     * @param object Object
032     * @return true：为空 false：非空
033     */
034    public static boolean isNull(Object object) {
035        return object == null;
036    }
037
038    /**
039     * 判断一个对象是否非空
040     *
041     * @param object Object
042     * @return true：非空 false：空
043     */
044    public static boolean isNotNull(Object object) {
045        return !isNull(object);
046    }
047
048    @SuppressWarnings("unchecked")
049    public static <T> T cast(Object obj) {
050        return (T) obj;
051    }
052
053    /**
054     * 判断字符串是否为true
055     *
056     * @param str
057     * @return
058     */
059    public static boolean isStrTrue(String str) {
060        return StringUtils.isNotEmpty(str) && "true".equals(str);
061    }
062
063    /**
064     * 如果被检查对象为 {@code null}， 返回默认值（由 defaultValueSupplier 提供）；否则直接返回
065     *
066     * @param source               被检查对象
067     * @param defaultValueSupplier 默认值提供者
068     * @param <T>                  对象类型
069     * @return 被检查对象为{@code null}返回默认值，否则返回自定义handle处理后的返回值
070     * @throws NullPointerException {@code defaultValueSupplier == null} 时，抛出
071     * @since 5.7.20
072     */
073    public static <T> T defaultIfNull(T source, Supplier<? extends T> defaultValueSupplier) {
074        if (isNull(source)) {
075            return defaultValueSupplier.get();
076        }
077        return source;
078    }
079}