pulsar-common/src/main/java/org/apache/pulsar/common/util/SafeCollectionUtils.java

/**
 * 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.apache.pulsar.common.util;

import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;

/**
 * Safe collection utils.
 */
public class SafeCollectionUtils {

    public static List<Long> longArrayToList(long[] array) {
        return array == null || array.length == 0 ? Collections.emptyList()
            : Arrays.stream(array).boxed().collect(Collectors.toList());
    }

    public static long[] longListToArray(List<Long> list) {
        return list == null || list.size() == 0 ? new long[0] : list.stream().mapToLong(l->l).toArray();
    }
}