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.enrich;
  
  import java.util.List;
  
  import org.apache.apex.malhar.lib.db.cache.CacheManager;
  import org.apache.apex.malhar.lib.util.FieldInfo;
  import org.apache.hadoop.classification.InterfaceStability;
  
  /**
   * Interface for store to be used in enrichment
   *
   * @since 3.4.0
   */
  @InterfaceStability.Evolving
  public interface BackendLoader extends CacheManager.Backup
  {
    /**
     * Set {@link FieldInfo} for lookup fields and also include fields.
     * Calling this method is mandatory for correct functioning of backend loader.
     *
     * @param lookupFieldInfo  List of {@link FieldInfo} that will be used as key in lookup.
     * @param includeFieldInfo List of {@link FieldInfo} that will be retrieved from store.
     */
    void setFieldInfo(List<FieldInfo> lookupFieldInfo, List<FieldInfo> includeFieldInfo);
  }
  