org.apache.mahout.cf.taste.impl.model.jdbc

Class AbstractBooleanPrefJDBCDataModel

java.lang.Object

org.apache.mahout.cf.taste.impl.common.jdbc.AbstractJDBCComponent

org.apache.mahout.cf.taste.impl.model.jdbc.AbstractJDBCDataModel

org.apache.mahout.cf.taste.impl.model.jdbc.AbstractBooleanPrefJDBCDataModel

All Implemented Interfaces:

Serializable, Refreshable, DataModel, JDBCDataModel

Direct Known Subclasses:

MySQLBooleanPrefJDBCDataModel, SQL92BooleanPrefJDBCDataModel

public abstract class AbstractBooleanPrefJDBCDataModel
extends AbstractJDBCDataModel

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.mahout.cf.taste.impl.model.jdbc.AbstractJDBCDataModel

DEFAULT_ITEM_ID_COLUMN, DEFAULT_PREFERENCE_COLUMN, DEFAULT_PREFERENCE_TABLE, DEFAULT_PREFERENCE_TIME_COLUMN, DEFAULT_USER_ID_COLUMN

Fields inherited from class org.apache.mahout.cf.taste.impl.common.jdbc.AbstractJDBCComponent

DEFAULT_DATASOURCE_NAME

Constructor Summary

Constructors

Modifier

Constructor and Description

protected

AbstractBooleanPrefJDBCDataModel(DataSource dataSource, String preferenceTable, String userIDColumn, String itemIDColumn, String preferenceColumn, String getPreferenceSQL, String getPreferenceTimeSQL, String getUserSQL, String getAllUsersSQL, String getNumItemsSQL, String getNumUsersSQL, String setPreferenceSQL, String removePreferenceSQL, String getUsersSQL, String getItemsSQL, String getPrefsForItemSQL, String getNumPreferenceForItemSQL, String getNumPreferenceForItemsSQL, String getMaxPreferenceSQL, String getMinPreferenceSQL)

Method Summary

Methods

Modifier and Type	Method and Description
protected Preference	buildPreference(ResultSet rs)
float	getMaxPreference()
float	getMinPreference()
boolean	hasPreferenceValues()
void	setPreference(long userID, long itemID, float value)

Methods inherited from class org.apache.mahout.cf.taste.impl.model.jdbc.AbstractJDBCDataModel

doGetPreferencesForItem, exportWithIDsOnly, exportWithPrefs, getDataSource, getItemIDColumn, getItemIDs, getItemIDsFromUser, getLongColumn, getNumItems, getNumUsers, getNumUsersWithPreferenceFor, getNumUsersWithPreferenceFor, getPreferenceColumn, getPreferencesForItem, getPreferencesFromUser, getPreferenceTable, getPreferenceTime, getPreferenceValue, getUserIDColumn, getUserIDs, refresh, removePreference, setLongParameter

Methods inherited from class org.apache.mahout.cf.taste.impl.common.jdbc.AbstractJDBCComponent

checkNotNullAndLog, checkNotNullAndLog, getFetchSize, lookupDataSource

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractBooleanPrefJDBCDataModel

protected AbstractBooleanPrefJDBCDataModel(DataSource dataSource,
                                String preferenceTable,
                                String userIDColumn,
                                String itemIDColumn,
                                String preferenceColumn,
                                String getPreferenceSQL,
                                String getPreferenceTimeSQL,
                                String getUserSQL,
                                String getAllUsersSQL,
                                String getNumItemsSQL,
                                String getNumUsersSQL,
                                String setPreferenceSQL,
                                String removePreferenceSQL,
                                String getUsersSQL,
                                String getItemsSQL,
                                String getPrefsForItemSQL,
                                String getNumPreferenceForItemSQL,
                                String getNumPreferenceForItemsSQL,
                                String getMaxPreferenceSQL,
                                String getMinPreferenceSQL)

Method Detail

buildPreference

protected Preference buildPreference(ResultSet rs)
                              throws SQLException

Overrides:

buildPreference in class AbstractJDBCDataModel

Throws:

SQLException

setPreference

public void setPreference(long userID,
                 long itemID,
                 float value)
                   throws TasteException

Specified by:

setPreference in interface DataModel

Overrides:

setPreference in class AbstractJDBCDataModel

Throws:

TasteException

hasPreferenceValues

public boolean hasPreferenceValues()

Specified by:

hasPreferenceValues in interface DataModel

Overrides:

hasPreferenceValues in class AbstractJDBCDataModel

getMaxPreference

public float getMaxPreference()

Specified by:

getMaxPreference in interface DataModel

Overrides:

getMaxPreference in class AbstractJDBCDataModel

getMinPreference

public float getMinPreference()

Specified by:

getMinPreference in interface DataModel

Overrides:

getMinPreference in class AbstractJDBCDataModel