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/*******************************************************************************
 *
 *    Copyright (C) 2015-2018 the BBoxDB project
 *  
 *    Licensed 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.bboxdb.storage.sstable.duplicateresolver;

import java.util.List;

import org.bboxdb.commons.DuplicateResolver;
import org.bboxdb.storage.entity.Tuple;
import org.bboxdb.storage.util.TupleHelper;

public class NewestTupleDuplicateResolver implements DuplicateResolver {

	@Override
	public void removeDuplicates(final List unconsumedDuplicates) {
		Tuple newestTuple = null;
				
		for(final Tuple tuple : unconsumedDuplicates) {
			newestTuple = TupleHelper.returnMostRecentTuple(newestTuple, tuple);
		}
		
		unconsumedDuplicates.clear();
		
		if(newestTuple != null) {
			unconsumedDuplicates.add(newestTuple);
		}
		
	}

}