RollingWindowedMinHashFactory.java

/*
 * Seldon -- open source prediction engine
 * =======================================
 * Copyright 2011-2015 Seldon Technologies Ltd and Rummble Ltd (http://www.seldon.io/)
 *
 **********************************************************************************************
 *
 * 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 io.seldon.stream.itemsim;

import io.seldon.stream.itemsim.minhash.Hasher;

import java.util.ArrayList;
import java.util.List;

public class RollingWindowedMinHashFactory implements MinHasherFactory {

	List<Hasher> hashes;
	
	
	
	public RollingWindowedMinHashFactory(List<Hasher> hashes) {
		super();
		this.hashes = hashes;
	}



	@Override
	public List<MinHasher> create(long window)
	{
		List<MinHasher> minHashers = new ArrayList<>();
		for(Hasher h : hashes)
			minHashers.add(new RollingWindowedMinHash(h, window));
		return minHashers;
	}
	
	
}