org.grouplens.lenskit.data.event

Class Events

java.lang.Object

org.grouplens.lenskit.data.event.Events

public final class Events
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static Comparator<Event>	ITEM_TIME_COMPARATOR Compare two item events by item, then timestamp.
static Comparator<Event>	TIMESTAMP_COMPARATOR Compare two events by timestamp.
static Comparator<Event>	USER_TIME_COMPARATOR Compare two events by user, then timestamp.

Method Summary

Modifier and Type	Method and Description
static Like	like(long user, long item) Create a new Like event with no timestamp.
static Like	like(long user, long item, long ts) Create a new Like event.
static LikeBatch	likeBatch(long user, long item, int count) Create a LikeBatch event with a nonzero count.

Methods inherited from class java.lang.Object

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

Field Detail

TIMESTAMP_COMPARATOR

public static final Comparator<Event> TIMESTAMP_COMPARATOR

Compare two events by timestamp.

USER_TIME_COMPARATOR

public static final Comparator<Event> USER_TIME_COMPARATOR

Compare two events by user, then timestamp.

ITEM_TIME_COMPARATOR

public static final Comparator<Event> ITEM_TIME_COMPARATOR

Compare two item events by item, then timestamp.

Method Detail

like

public static Like like(long user,
                        long item)

Create a new Like event with no timestamp.

Parameters:

user - The user ID.

item - The item ID.

Returns:

A Like.

like

public static Like like(long user,
                        long item,
                        long ts)

Create a new Like event.

Parameters:

user - The user ID.

item - The item ID.

ts - The timestamp.

Returns:

A Like.

likeBatch

public static LikeBatch likeBatch(long user,
                                  long item,
                                  int count)

Create a LikeBatch event with a nonzero count.

Parameters:

user - The user ID.

item - The item ID.

count - The count.

Returns:

The new event.