PreferenceSource.java

/**
 * Copyright 2012 Anjuke Inc.
 *
 * 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 com.anjuke.romar.mahout.persistence;

import org.apache.mahout.cf.taste.impl.common.FastByIDMap;
import org.apache.mahout.cf.taste.model.PreferenceArray;


public interface PreferenceSource {

    void commit();

    void compact();

    void setPreference(long userID, long itemID, float value);

    void removePreference(long userID, long itemID);

    void removePreferenceByUserId(long userID);

    void removePreferenceByItemId(long itemID);

    void close();

    FastByIDMap<PreferenceArray> getPreferenceUserData();

}