org.snaker.engine.helper.AssertHelper Maven / Gradle / Ivy
/* Copyright 2013-2014 the original author or authors.
*
* 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 org.snaker.engine.helper;
/**
* 断言帮助类
* @author yuqs
* @version 1.0
*/
public abstract class AssertHelper {
/**
* 断言表达式为true
* @param expression
* @param message 异常打印信息
*/
public static void isTrue(boolean expression, String message) {
if (!expression) {
throw new IllegalArgumentException(message);
}
}
/**
* 断言表达式为true
* @param expression
*/
public static void isTrue(boolean expression) {
isTrue(expression, "[Assertion failed] - this expression must be true");
}
/**
* 断言给定的object对象为空
* @param object
* @param message 异常打印信息
*/
public static void isNull(Object object, String message) {
if (object != null) {
throw new IllegalArgumentException(message);
}
}
/**
* 断言给定的object对象为空
* @param object
*/
public static void isNull(Object object) {
isNull(object, "[Assertion failed] - the object argument must be null");
}
/**
* 断言给定的object对象为非空
* @param object
* @param message 异常打印信息
*/
public static void notNull(Object object, String message) {
if (object == null) {
throw new IllegalArgumentException(message);
}
}
/**
* 断言给定的object对象为非空
* @param object
*/
public static void notNull(Object object) {
notNull(object, "[Assertion failed] - this argument is required; it must not be null");
}
/**
* 断言给定的字符串为非空
* @param str
*/
public static void notEmpty(String str) {
notEmpty(str, "[Assertion failed] - this argument is required; it must not be null or empty");
}
/**
* 断言给定的字符串为非空
* @param str
* @param message
*/
public static void notEmpty(String str, String message) {
if (str == null || str.length() == 0) {
throw new IllegalArgumentException(message);
}
}
}