com.blade.kit.Assert Maven / Gradle / Ivy

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/**
 * Copyright (c) 2017, biezhi 王爵 ([email protected])
 * 
 * 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.blade.kit;

import lombok.AccessLevel;
import lombok.NoArgsConstructor;

import java.util.concurrent.Callable;

/**
 * Assert Kit
 *
 * @author biezhi
 *         2017/5/31
 */
@NoArgsConstructor(access = AccessLevel.PRIVATE)
public final class Assert {

    public static void greaterThan(double num, double exp, String msg) {
        if (num < exp) {
            throw new IllegalArgumentException(msg);
        }
    }

    public static void notNull(Object object, String msg) {
        if (null == object) {
            throw new IllegalArgumentException(msg);
        }
    }

    public static void notEmpty(String str, String msg) {
        if (null == str || "".equals(str)) {
            throw new IllegalArgumentException(msg);
        }
    }

    public static  void notEmpty(T[] arr, String msg) {
        if (null == arr || arr.length == 0) {
            throw new IllegalArgumentException(msg);
        }
    }

    public static  T wrap(Callable callable) {
        try {
            return callable.call();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    public static void packageNotEmpty(Class clazz,String msg){
        if (clazz.getPackage() == null) {
            throw new IllegalArgumentException("[" + clazz.getName() + ".java] " + msg);
        }
    }

}