de.lmu.ifi.dbs.elki.database.ids
Interface DBIDs

All Superinterfaces:

Iterable<DBID>

All Known Subinterfaces:

ArrayDBIDs, ArrayModifiableDBIDs, ArrayStaticDBIDs, DBID, DBIDRange, HashSetDBIDs, HashSetModifiableDBIDs, ModifiableDBIDs, SetDBIDs, StaticDBIDs, TreeSetDBIDs, TreeSetModifiableDBIDs

All Known Implementing Classes:

EmptyDBIDs, GenericArrayModifiableDBIDs, GenericHashSetModifiableDBIDs, GenericTreeSetModifiableDBIDs, IntegerArrayStaticDBIDs, IntegerDBID, IntegerDBIDRange, KNNList.DBIDView, MaskedDBIDs, MergedDBIDs, UnmodifiableDBIDs

public interface DBIDs
extends Iterable<DBID>

Interface for a collection of database references (IDs).

Method Summary

Collection<DBID>	asCollection() Retrieve collection access to the IDs
boolean	contains(Object o) Test whether an ID is contained.
boolean	isEmpty() Test for an empty DBID collection.
Iterator<DBID>	iterator() Retrieve Iterator access to the IDs.
int	size() Retrieve the collection / data size.

Method Detail

asCollection

Collection<DBID> asCollection()

Retrieve collection access to the IDs

Returns:

a collection of IDs

iterator

Iterator<DBID> iterator()

Retrieve Iterator access to the IDs.

Specified by:

iterator in interface Iterable<DBID>

Returns:

an iterator for the IDs

size

int size()

Retrieve the collection / data size.

Returns:

collection size

contains

boolean contains(Object o)

Test whether an ID is contained. Signature compatible with Collection.

Parameters:

o - object to test

Returns:

true when contained

isEmpty

boolean isEmpty()

Test for an empty DBID collection.

Returns:

true when empty.