/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.mahout.cf.taste.model;
import javax.sql.DataSource;
import org.apache.mahout.cf.taste.common.TasteException;
import org.apache.mahout.cf.taste.impl.common.FastByIDMap;
import org.apache.mahout.cf.taste.impl.common.FastIDSet;
public interface JDBCDataModel extends DataModel {
/**
* @return {@link DataSource} underlying this model
*/
DataSource getDataSource();
/**
* Hmm, should this exist elsewhere? seems like most relevant for a DB implementation, which is not in
* memory, which might want to export to memory.
*
* @return all user preference data
*/
FastByIDMap<PreferenceArray> exportWithPrefs() throws TasteException;
FastByIDMap<FastIDSet> exportWithIDsOnly() throws TasteException;
}