/*
* 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 gobblin.metadata;
/**
* Interface for an object that can merge metadata from several work units together.
* @param <T> Type of the metadata record that will be merged
*/
public interface MetadataMerger<T> {
/**
* Process a metadata record, merging it with all previously processed records.
* @param metadata Record to process
*/
void update(T metadata);
/**
* Get a metadata record that is a representation of all records passed into update().
*/
T getMergedMetadata();
}