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The runtime library of DBFlute
There is a newer version: 1.2.8
/*
 * Copyright 2014-2019 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.util;

/**
 * @author jflute
 */
public class DfAssertUtil {

    // ===================================================================================
    //                                                                              Object
    //                                                                              ======
    /**
     * Assert that the object is not null.
     * @param variableName The check name of variable for message. (NotNull)
     * @param value The checked value. (NotNull)
     * @throws IllegalArgumentException When the argument is null.
     */
    public static void assertObjectNotNull(String variableName, Object value) {
        if (variableName == null) {
            String msg = "The value should not be null: variableName=null value=" + value;
            throw new IllegalArgumentException(msg);
        }
        if (value == null) {
            String msg = "The value should not be null: variableName=" + variableName;
            throw new IllegalArgumentException(msg);
        }
    }

    // ===================================================================================
    //                                                                              String
    //                                                                              ======
    /**
     * Assert that the entity is not null and not trimmed empty.
     * @param variableName The check name of variable for message. (NotNull)
     * @param value The checked value. (NotNull)
     */
    public static void assertStringNotNullAndNotTrimmedEmpty(String variableName, String value) {
        assertObjectNotNull("variableName", variableName);
        assertObjectNotNull("value", value);
        if (value.trim().length() == 0) {
            String msg = "The value should not be empty: variableName=" + variableName + " value=" + value;
            throw new IllegalArgumentException(msg);
        }
    }
}