org.apache.mahout.cf.taste.model

Interface JDBCDataModel

All Superinterfaces:

DataModel, Refreshable, Serializable

public interface JDBCDataModel
extends DataModel

Method Summary

Modifier and Type	Method and Description
FastByIDMap<FastIDSet>	exportWithIDsOnly()
FastByIDMap<PreferenceArray>	exportWithPrefs() 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.
DataSource	getDataSource()

Methods inherited from interface org.apache.mahout.cf.taste.model.DataModel

getItemIDs, getItemIDsFromUser, getMaxPreference, getMinPreference, getNumItems, getNumUsers, getNumUsersWithPreferenceFor, getNumUsersWithPreferenceFor, getPreferencesForItem, getPreferencesFromUser, getPreferenceTime, getPreferenceValue, getUserIDs, hasPreferenceValues, removePreference, setPreference

Methods inherited from interface org.apache.mahout.cf.taste.common.Refreshable

refresh

Method Detail

getDataSource

DataSource getDataSource()

Returns:

DataSource underlying this model

exportWithPrefs

FastByIDMap<PreferenceArray> exportWithPrefs()
                                      throws TasteException

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.

Returns:

all user preference data

Throws:

TasteException

exportWithIDsOnly

FastByIDMap<FastIDSet> exportWithIDsOnly()
                                  throws TasteException

Throws:

TasteException