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DI Container for LastaFlute, super forked from Seasar as Java8

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/*
 * Copyright 2014-2015 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.dbflute.lasta.di.util;

import org.dbflute.lasta.di.exception.EmptyRuntimeException;

/**
 * 表明についてのユーティリティクラスです。
 * 
 * @author shot
 */
public class LdiAssertionUtil {

    /**
     * インスタンスを構築します。
     */
    protected LdiAssertionUtil() {
    }

    /**
     * nullでないことを表明します。
     * 
     * @param message
     * @param obj
     * @throws NullPointerException
     *             nullの場合。
     */
    public static void assertNotNull(String message, Object obj) throws NullPointerException {
        if (obj == null) {
            throw new NullPointerException(message);
        }
    }

    /**
     * 文字列が空あるいはnullでないことを表明します。
     * 
     * @param message
     * @param s
     * @throws EmptyRuntimeException
     *             文字列が空あるいはnullの場合。
     */
    public static void assertNotEmpty(String message, String s) throws EmptyRuntimeException {
        if (LdiStringUtil.isEmpty(s)) {
            throw new EmptyRuntimeException(message);
        }
    }

    /**
     * intが負でないことを表明します。
     * 
     * @param message
     * @param num
     * @throws IllegalArgumentException
     *             intが負の場合。
     */
    public static void assertIntegerNotNegative(String message, int num) throws IllegalArgumentException {
        if (num < 0) {
            throw new IllegalArgumentException(message);
        }
    }

}