content: /*
   * 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.spark.sql.hive.execution;
  
  import org.apache.hadoop.hive.ql.exec.UDF;
  
  import java.util.List;
  
  public class UDFListListInt extends UDF {
    /**
     * @param obj
     *   SQL schema: array&lt;struct&lt;x: int, y: int, z: int&gt;&gt;
     *   Java Type: List&lt;List&lt;Integer&gt;&gt;
     */
    @SuppressWarnings("unchecked")
    public long evaluate(Object obj) {
      if (obj == null) {
        return 0L;
      }
      List<List<?>> listList = (List<List<?>>) obj;
      long retVal = 0;
      for (List<?> aList : listList) {
        Number someInt = (Number) aList.get(1);
        try {
          retVal += someInt.longValue();
        } catch (NullPointerException e) {
          System.out.println(e);
        }
      }
      return retVal;
    }
  }
  