org.lenskit.data.entities

Class CommonAttributes

java.lang.Object

org.lenskit.data.entities.CommonAttributes

public final class CommonAttributes
extends Object

Definitions and utilities for common fields.

Field Summary

Fields

Modifier and Type	Field and Description
static TypedName<Integer>	COUNT A standard count, for events that may use them.
static TypedName<Long>	ENTITY_ID Attribute indicating the entity ID.
static TypedName<Long>	ITEM_ID The item ID associated with an entity.
static TypedName<String>	NAME A name associated with the entity.
static TypedName<Double>	RATING A rating value.
static TypedName<Long>	TIMESTAMP A timestamp associated with an event entity.
static TypedName<Long>	USER_ID The user ID associated with an entity.

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

ENTITY_ID

public static final TypedName<Long> ENTITY_ID

Attribute indicating the entity ID.

USER_ID

public static final TypedName<Long> USER_ID

The user ID associated with an entity. This is for when the user is a foreign key; in user entities, the user ID is stored as the entity ID.

ITEM_ID

public static final TypedName<Long> ITEM_ID

The item ID associated with an entity. This is for when the user is a foreign key; in item entities, the item ID is stored as the entity ID.

NAME

public static final TypedName<String> NAME

A name associated with the entity.

TIMESTAMP

public static final TypedName<Long> TIMESTAMP

A timestamp associated with an event entity.

RATING

public static final TypedName<Double> RATING

A rating value.

COUNT

public static final TypedName<Integer> COUNT

A standard count, for events that may use them.