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.mongodb;
  
  import java.util.ArrayList;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import com.mongodb.BasicDBObject;
  
  /**
   * This is a MongoDB Output Operator, which uses HashMaps to map tuples to appropriate tables and columns in MongoDB,
   * when doing writes.
   * <p>
   * <br>
   * Ports:<br>
   * <b>Input</b>: Can have one input port, derived from base class <br>
   * <b>Output</b>: no output port<br>
   * <br>
   * Properties:<br>
   * <b>columnList</b>:column List mapping, used for insertion tuple mapping <br>
   * <b>tableMapping</b>:table mapping list, used for insertion tuple mapping<br>
   * <br>
   * Compile time checks:<br>
   * None<br>
   * <br>
   * Run time checks:<br>
   * None<br>
   * <br>
   * <b>Benchmarks</b>:
   * <br>
   * </p>
   * @displayName MongoDB Array List Output
   * @category Output
   * @tags mongodb
   *
   * @since 0.3.2
   */
  public class MongoDBArrayListOutputOperator extends MongoDBOutputOperator<ArrayList<Object>>
  {
    private static final Logger logger = LoggerFactory.getLogger(MongoDBArrayListOutputOperator.class);
    private transient ArrayList<String> columnList = new ArrayList<String>();
    protected transient ArrayList<String> tableMapping = new ArrayList<String>();
  
    /**
     * set Column mapping information at operator creating time
     *
     * @param mapping
     */
    @Override
    public void setColumnMapping(String[] mapping)
    {
      for (String str : mapping) {
        String[] tokens = str.split("[:]");
        String[] subtok = tokens[0].split("[.]");
        String table = subtok[0];
        tableMapping.add(table);
        if (tableList.contains(table) == false) {
          tableList.add(table);
        }
        String column = subtok[1];
        columnList.add(column);
        String type = tokens[1];
      }
    }
  
    /**
     * process tuple based on ArrayList tuple
     *
     * @param tuple
     */
    @Override
    public void processTuple(ArrayList<Object> tuple)
    {
      tableToDocument.clear();
      BasicDBObject doc = null;
      for (int i = 0; i < tuple.size(); i++) {
        String table = tableMapping.get(i);
        if ((doc = tableToDocument.get(table)) == null) {
          doc = new BasicDBObject();
          doc.put(columnList.get(i), tuple.get(i));
        } else {
          doc.put(columnList.get(i), tuple.get(i));
        }
        tableToDocument.put(table, doc);
      }
      processTupleCommon();
    }
  }
  