001/* 002 * Copyright (c) 2022-2025, Mybatis-Flex (fuhai999@gmail.com). 003 * <p> 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 * <p> 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * <p> 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 com.mybatisflex.core.query; 017 018import com.mybatisflex.core.util.StringUtil; 019 020import java.util.Collection; 021import java.util.Map; 022 023public class If { 024 025 private If() { 026 } 027 028 /** 029 * 判断对象是否为空 030 */ 031 public static boolean isNull(Object object) { 032 return object == null; 033 } 034 035 /** 036 * 判断对象是否非空 037 */ 038 public static boolean notNull(Object object) { 039 return object != null; 040 } 041 042 public static <T> boolean isEmpty(T[] array) { 043 return array == null || array.length == 0; 044 } 045 046 @Deprecated 047 public static <T> boolean isNotEmpty(T[] array) { 048 return notEmpty(array); 049 } 050 051 public static <T> boolean notEmpty(T[] array) { 052 return !isEmpty(array); 053 } 054 055 public static boolean isEmpty(Map<?, ?> map) { 056 return map == null || map.isEmpty(); 057 } 058 059 @Deprecated 060 public static boolean isNotEmpty(Map<?, ?> map) { 061 return notEmpty(map); 062 } 063 064 public static boolean notEmpty(Map<?, ?> map) { 065 return !isEmpty(map); 066 } 067 068 public static boolean isEmpty(Collection<?> collection) { 069 return collection == null || collection.isEmpty(); 070 } 071 072 @Deprecated 073 public static boolean isNotEmpty(Collection<?> collection) { 074 return notEmpty(collection); 075 } 076 077 public static boolean notEmpty(Collection<?> collection) { 078 return !isEmpty(collection); 079 } 080 081 public static boolean hasText(String string) { 082 return StringUtil.hasText(string); 083 } 084 085 public static boolean noText(String string) { 086 return StringUtil.noText(string); 087 } 088 089}