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/*
 * 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,
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 * See the License for the specific language governing permissions and
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 */

package org.apache.hudi.common.util.collection;

/**
 * 

Operations on arrays, primitive arrays (like {@code int[]}) and * primitive wrapper arrays (like {@code Integer[]}).

* *

This class tries to handle {@code null} input gracefully. * An exception will not be thrown for a {@code null} * array input. However, an Object array that contains a {@code null} * element may throw an exception. Each method documents its behaviour.

* * NOTE : Adapted from org.apache.commons.lang3.ArrayUtils */ public class ArrayUtils { /** * An empty immutable {@code long} array. */ public static final long[] EMPTY_LONG_ARRAY = new long[0]; // Long array converters // ---------------------------------------------------------------------- /** *

Converts an array of object Longs to primitives.

* *

This method returns {@code null} for a {@code null} input array.

* * @param array a {@code Long} array, may be {@code null} * @return a {@code long} array, {@code null} if null array input * @throws NullPointerException if array content is {@code null} */ public static long[] toPrimitive(Long[] array) { if (array == null) { return null; } else if (array.length == 0) { return EMPTY_LONG_ARRAY; } final long[] result = new long[array.length]; for (int i = 0; i < array.length; i++) { result[i] = array[i].longValue(); } return result; } }




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