com.tagtraum.beatunes.library

Class IndexedId

java.lang.Object

com.tagtraum.beatunes.library.IndexedId

All Implemented Interfaces:

Comparable<IndexedId>

public class IndexedId
extends Object
implements Comparable<IndexedId>

Represents an id that is part of an order indicated by an associated index.

Author:

Hendrik Schreiber

Constructor Summary

Constructors

Constructor and Description
IndexedId(long id, int index)

Method Summary

Modifier and Type	Method and Description
int	compareTo(IndexedId that)
boolean	equals(Object o)
long	getId()
int	getIndex()
int	hashCode()
static IndexedId[]	invert(IndexedId[] ids) Invert the mapping between sort indices (given by the array order) and natural indices (given by getIndex().
static long[]	toSortedIds(IndexedId[] indexedSongIds) Extracts those ids that belong to an index >=0 and returns them in the order of the (positive) indices.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

IndexedId

public IndexedId(long id,
                 int index)

Method Detail

getId

public long getId()

getIndex

public int getIndex()

toSortedIds

public static long[] toSortedIds(IndexedId[] indexedSongIds)

Extracts those ids that belong to an index >=0 and returns them in the order of the (positive) indices.

Parameters:

indexedSongIds - indexed song ids

Returns:

sorted ids

invert

public static IndexedId[] invert(IndexedId[] ids)

Invert the mapping between sort indices (given by the array order) and natural indices (given by getIndex().

Parameters:

ids - indexed song ids

Returns:

sorted indices

compareTo

public int compareTo(IndexedId that)

Specified by:

compareTo in interface Comparable<IndexedId>

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object