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.couchdb;
  
  import org.apache.apex.malhar.lib.db.AbstractStoreOutputOperator;
  
  /**
   * Generic base output adaptor which saves tuples in the CouchDb.&nbsp; Subclasses should provide implementation for getting Document Id. <br/>
   * <p>
   * An {@link AbstractStoreOutputOperator} saving tuples in the CouchDb.
   * Sub-classes provide the implementation of parsing document id from the tuple and converting tuple to a map.
   * @displayName Abstract CouchDB Output
   * @category Output
   * @tags output operator
   * @param <T> type of tuple </T>
   * @since 0.3.5
   */
  public abstract class AbstractCouchDBOutputOperator<T> extends AbstractStoreOutputOperator<T, CouchDbStore>
  {
  
    AbstractCouchDBOutputOperator()
    {
      super();
    }
  
    @Override
    public void processTuple(T tuple)
    {
      store.upsertDocument(getDocumentId(tuple), tuple);
    }
  
    /**
     * Get document id from the tuple.
     *
     * @param tuple tuple to be saved.
     * @return document id.
     */
    public abstract String getDocumentId(T tuple);
  
  }
  