/*
* 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 java.util.ArrayList;
import java.util.List;
public class MinHashCollection {
List<MinHasher> minHashes = new ArrayList<>();
public MinHashCollection(List<MinHasher> minHashes) {
this.minHashes = minHashes;
}
public void add(long id,long time)
{
for(MinHasher mh : minHashes)
mh.add(id, time);
}
public List<Long> getMinHashes(long time)
{
List<Long> res = new ArrayList<Long>();
for(MinHasher mh : minHashes)
{
Long minHash = mh.getMinHash(time);
if (minHash == null)
return new ArrayList<Long>();
res.add(minHash);
}
return res;
}
public int getCount(long time)
{
return minHashes.get(0).getCount(time);
}
}