| /** |
| * 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.storm.elasticsearch.common; |
| |
| import org.apache.storm.tuple.ITuple; |
| |
| import java.io.Serializable; |
| |
| /** |
| * TupleMapper defines how to extract source, index, type, and id from tuple for ElasticSearch. |
| */ |
| public interface EsTupleMapper extends Serializable { |
| /** |
| * Extracts source from tuple. |
| * @param tuple source tuple |
| * @return source |
| */ |
| String getSource(ITuple tuple); |
| |
| /** |
| * Extracts index from tuple. |
| * @param tuple source tuple |
| * @return index |
| */ |
| String getIndex(ITuple tuple); |
| |
| /** |
| * Extracts type from tuple. |
| * @param tuple source tuple |
| * @return type |
| */ |
| String getType(ITuple tuple); |
| |
| /** |
| * Extracts id from tuple. |
| * @param tuple source tuple |
| * @return id |
| */ |
| String getId(ITuple tuple); |
| } |