001/*
002 * Licensed under the Apache License, Version 2.0 (the "License");
003 * you may not use this file except in compliance with the License.
004 * You may obtain a copy of the License at
005 *
006 *     http://www.apache.org/licenses/LICENSE-2.0
007 *
008 * Unless required by applicable law or agreed to in writing, software
009 * distributed under the License is distributed on an "AS IS" BASIS,
010 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
011 * See the License for the specific language governing permissions and
012 * limitations under the License.
013 */
014package org.gbif.utils;
015
016public final class ObjectUtils {
017
018  private ObjectUtils() {}
019
020  /**
021   * Returns the first of the given parameters that is not null.
022   * If all given parameters are null, returns null.
023   *
024   * @param items
025   * @param <T>
026   * @return
027   */
028  public static <T> T coalesce(T... items) {
029    if (items != null) {
030      for (T i : items) if (i != null) return i;
031    }
032    return null;
033  }
034
035  public static <T> T coalesce(Iterable<T> items) {
036    if (items != null) {
037      for (T i : items) if (i != null) return i;
038    }
039    return null;
040  }
041}