/*
* 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.recommendation.filters.base;
import io.seldon.clustering.recommender.RecommendationContext;
import io.seldon.recommendation.ItemFilter;
import java.util.Collections;
import java.util.List;
import org.springframework.stereotype.Component;
/**
* Filter for the item that the user is currently interacting with.
* @author firemanphil
* Date: 05/12/14
* Time: 15:31
*/
@Component
public class CurrentItemFilter implements ItemFilter {
@Override
public List<Long> produceExcludedItems(String client, Long user, String clientUserId, RecommendationContext.OptionsHolder optsHolder,
Long currentItem,String lastRecListUUID, int numRecommendations) {
if (currentItem != null)
return Collections.singletonList(currentItem);
else
return Collections.emptyList();
}
}