/*
* NOTICE: THE FILE HAS BEEN MODIFIED TO SUIT THE NEEDS OF THE PROJECT.
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.robobinding.util;
/**
* Migrated some of methods from {@link org.apache.commons.lang3.ArrayUtils}.
*
* @since 1.0
* @version $Revision: 1.0 $
* @author Cheng Wei
*/
public class ArrayUtils {
/**
* An empty immutable {@code Object} array.
*/
public static final Object[] EMPTY_OBJECT_ARRAY = new Object[0];
/**
* An empty immutable {@code Class} array.
*/
public static final Class<?>[] EMPTY_CLASS_ARRAY = new Class[0];
private ArrayUtils() {
}
/**
* <p>
* Checks if an array of Objects is empty or {@code null}.
* </p>
*
* @param array
* the array to test
* @return {@code true} if the array is empty or {@code null}
* @since 2.1
*/
public static boolean isEmpty(final Object[] array) {
return array == null || array.length == 0;
}
public static boolean isNotEmpty(final Object[] array) {
return !isEmpty(array);
}
/**
* <p>
* Checks whether two arrays are the same length, treating {@code null}
* arrays as length {@code 0}.
*
* <p>
* Any multi-dimensional aspects of the arrays are ignored.
* </p>
*
* @param array1
* the first array, may be {@code null}
* @param array2
* the second array, may be {@code null}
* @return {@code true} if length of arrays matches, treating {@code null}
* as an empty array
*/
public static boolean isSameLength(final Object[] array1, final Object[] array2) {
if ((array1 == null && array2 != null && array2.length > 0) || (array2 == null && array1 != null && array1.length > 0)
|| (array1 != null && array2 != null && array1.length != array2.length)) {
return false;
}
return true;
}
}