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.apex.malhar.contrib.aerospike;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import javax.validation.constraints.NotNull;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import org.apache.apex.malhar.lib.util.PojoUtils;
  import org.apache.apex.malhar.lib.util.PojoUtils.Getter;
  import org.apache.hadoop.classification.InterfaceStability.Evolving;
  
  import com.aerospike.client.Bin;
  import com.aerospike.client.Key;
  
  /**
   * <p>
   * A generic implementation of {@link AbstractAerospikeNonTransactionalPutOperator} which can
   * take a POJO.
   * </p>
   *
   * @displayName Aerospike Non-Transactional Put Operator
   * @category Output
   * @tags database, nosql, pojo, aerospike
   * @since 2.1.0
   */
  @Evolving
  public class AerospikePOJONonTransactionalPutOperator extends AbstractAerospikeNonTransactionalPutOperator<Object>
  {
    private static final Logger LOG =
        LoggerFactory.getLogger(AerospikePOJONonTransactionalPutOperator.class);
  
    // Two element list; first retrieves the record key and second the list of bins in this tuple
    @NotNull
    private ArrayList<String> expressions;
  
    private transient Getter<Object, Key> keyGetter;
    private transient Getter<Object, List> binsGetter;
  
    // required by App Builder
    public AerospikePOJONonTransactionalPutOperator()
    {
    }
  
    /*
     * Two Java expressions that will yield the key and the list of modified Bins
     * for the destination record of this tuple
     * Example: {"getKey()", "getBins()"}
     */
    public ArrayList<String> getExpressions()
    {
      return expressions;
    }
  
    /*
     * Set field retrieval list of expressions.
     * @param ArrayList of field retrieval expressions
     */
    public void setExpressions(ArrayList<String> e)
    {
      this.expressions = e;
    }
  
    @Override
    protected Key getUpdatedBins(Object tuple, List<Bin> list)
    {
      if (null == keyGetter) {    // first tuple
        Class<?> tupleClass = tuple.getClass();
        keyGetter  = PojoUtils.createGetter(tupleClass, expressions.get(0), Key.class);
        binsGetter = PojoUtils.createGetter(tupleClass, expressions.get(1), List.class);
      }
      Key key = keyGetter.get(tuple);
      List<Bin> binList = binsGetter.get(tuple);
      if (!(null == binList || binList.isEmpty())) {
        list.addAll(binList);
      }
      return key;
    }
  
  }
  