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:
- Refreshable, DataModel, JDBCDataModel
- Direct Known Subclasses:
- MySQLBooleanPrefJDBCDataModel
public abstract class AbstractBooleanPrefJDBCDataModel
- extends AbstractJDBCDataModel
Constructor Summary |
protected |
AbstractBooleanPrefJDBCDataModel(javax.sql.DataSource dataSource,
java.lang.String preferenceTable,
java.lang.String userIDColumn,
java.lang.String itemIDColumn,
java.lang.String preferenceColumn,
java.lang.String getPreferenceSQL,
java.lang.String getUserSQL,
java.lang.String getAllUsersSQL,
java.lang.String getNumItemsSQL,
java.lang.String getNumUsersSQL,
java.lang.String setPreferenceSQL,
java.lang.String removePreferenceSQL,
java.lang.String getUsersSQL,
java.lang.String getItemsSQL,
java.lang.String getPrefsForItemSQL,
java.lang.String getNumPreferenceForItemSQL,
java.lang.String getNumPreferenceForItemsSQL)
|
Methods inherited from class org.apache.mahout.cf.taste.impl.model.jdbc.AbstractJDBCDataModel |
doGetPreferencesForItem, exportWithIDsOnly, exportWithPrefs, getDataSource, getItemIDColumn, getItemIDs, getItemIDsFromUser, getLongColumn, getNumItems, getNumUsers, getNumUsersWithPreferenceFor, getPreferenceColumn, getPreferencesForItem, getPreferencesFromUser, getPreferenceTable, getPreferenceValue, getUserIDColumn, getUserIDs, refresh, removePreference, setLongParameter |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
AbstractBooleanPrefJDBCDataModel
protected AbstractBooleanPrefJDBCDataModel(javax.sql.DataSource dataSource,
java.lang.String preferenceTable,
java.lang.String userIDColumn,
java.lang.String itemIDColumn,
java.lang.String preferenceColumn,
java.lang.String getPreferenceSQL,
java.lang.String getUserSQL,
java.lang.String getAllUsersSQL,
java.lang.String getNumItemsSQL,
java.lang.String getNumUsersSQL,
java.lang.String setPreferenceSQL,
java.lang.String removePreferenceSQL,
java.lang.String getUsersSQL,
java.lang.String getItemsSQL,
java.lang.String getPrefsForItemSQL,
java.lang.String getNumPreferenceForItemSQL,
java.lang.String getNumPreferenceForItemsSQL)
buildPreference
protected Preference buildPreference(java.sql.ResultSet rs)
throws java.sql.SQLException
- Overrides:
buildPreference
in class AbstractJDBCDataModel
- Throws:
java.sql.SQLException
setPreference
public void setPreference(long userID,
long itemID,
float value)
throws TasteException
- Description copied from interface:
DataModel
Sets a particular preference (item plus rating) for a user.
- Specified by:
setPreference
in interface DataModel
- Overrides:
setPreference
in class AbstractJDBCDataModel
- Parameters:
userID
- user to set preference foritemID
- item to set preference forvalue
- preference value
- Throws:
NoSuchItemException
- if the item does not exist
NoSuchUserException
- if the user does not exist
TasteException
- if an error occurs while accessing the data
hasPreferenceValues
public boolean hasPreferenceValues()
- Specified by:
hasPreferenceValues
in interface DataModel
- Overrides:
hasPreferenceValues
in class AbstractJDBCDataModel
Copyright © 2008-2010 The Apache Software Foundation. All Rights Reserved.