/*
* Sifarish: Recommendation Engine
* Author: Pranab Ghosh
*
* 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.sifarish.common;
import java.util.List;
/**
* Converts engagement event to preference score
* @author pranab
*
*/
public class EngagementToPreferenceMapper {
private List<EngagementScore> eventScores;
public EngagementToPreferenceMapper() {
}
public List<EngagementScore> getEventScores() {
return eventScores;
}
public void setEventScores(List<EngagementScore> eventScores) {
this.eventScores = eventScores;
}
/**
* @param eventType
* @param count
* @return
*/
public int scoreForEvent(int eventType, int count) {
int score = 0;
//match event type
EngagementScore thisScore = null;
for (EngagementScore engScore : eventScores) {
if (engScore.getEventType() == eventType) {
thisScore = engScore;
break;
}
}
//get score
if (null != thisScore) {
score = thisScore.eventScore(count);
} else {
throw new IllegalArgumentException("invlid engaement event type");
}
return score;
}
}