de.lmu.ifi.dbs.elki.database.ids.integer
Class IntegerDBID

java.lang.Object
  java.util.AbstractCollection<E>
      java.util.AbstractList<DBID>
          de.lmu.ifi.dbs.elki.database.ids.integer.IntegerDBID

All Implemented Interfaces:

ArrayDBIDs, ArrayStaticDBIDs, DBID, DBIDs, StaticDBIDs, Comparable<DBID>, Iterable<DBID>, Collection<DBID>, List<DBID>

 class IntegerDBID
extends AbstractList<DBID>
implements DBID

Database ID object. While this currently is just an Integer, it should be avoided to store the object IDs in regular integers to reduce problems if this API ever changes (for example if someone needs to support long, it should not require changes in too many places!) In particular, a developer should not make any assumption of these IDs being consistent across multiple results/databases.

Nested Class Summary

static class	IntegerDBID.DynamicSerializer Dynamic sized serializer, using varint.
protected class	IntegerDBID.Itr Pseudo iterator for DBIDs interface.
static class	IntegerDBID.StaticSerializer Static sized serializer, using regular integers.

Field Summary

static IntegerDBID.DynamicSerializer	dynamicSerializer The public instance to use for dynamic serialization.
protected int	id The actual object ID.
static IntegerDBID.StaticSerializer	staticSerializer The public instance to use for static serialization.

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

protected	IntegerDBID(int id) Constructor from integer id.
protected	IntegerDBID(Integer id) Constructor from integer id.

Method Summary

Collection<DBID>	asCollection() Retrieve collection access to the IDs
int	compareTo(DBID o)
boolean	contains(Object o) Test whether an ID is contained.
boolean	equals(Object obj)
DBID	get(int i)
int	getIntegerID() Return the integer value of the object ID.
int	hashCode()
boolean	isEmpty() Test for an empty DBID collection.
Iterator<DBID>	iterator() Retrieve Iterator access to the IDs.
int	size() Retrieve the collection / data size.
String	toString()

Methods inherited from class java.util.AbstractList

add, add, addAll, clear, indexOf, lastIndexOf, listIterator, listIterator, remove, removeRange, set, subList

Methods inherited from class java.util.AbstractCollection

addAll, containsAll, remove, removeAll, retainAll, toArray, toArray

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.List

add, add, addAll, addAll, clear, containsAll, indexOf, lastIndexOf, listIterator, listIterator, remove, remove, removeAll, retainAll, set, subList, toArray, toArray

Field Detail

id

protected final int id

The actual object ID.

dynamicSerializer

public static final IntegerDBID.DynamicSerializer dynamicSerializer

The public instance to use for dynamic serialization.

staticSerializer

public static final IntegerDBID.StaticSerializer staticSerializer

The public instance to use for static serialization.

Constructor Detail

IntegerDBID

protected IntegerDBID(int id)

Constructor from integer id.

Parameters:

id - integer id.

IntegerDBID

protected IntegerDBID(Integer id)

Constructor from integer id.

Parameters:

id - integer id.

Method Detail

getIntegerID

public int getIntegerID()

Return the integer value of the object ID.

Specified by:

getIntegerID in interface DBID

Returns:

integer id

toString

public String toString()

Overrides:

toString in class AbstractCollection<DBID>

hashCode

public int hashCode()

Specified by:

hashCode in interface Collection<DBID>

Specified by:

hashCode in interface List<DBID>

Overrides:

hashCode in class AbstractList<DBID>

equals

public boolean equals(Object obj)

Specified by:

equals in interface Collection<DBID>

Specified by:

equals in interface List<DBID>

Overrides:

equals in class AbstractList<DBID>

compareTo

public int compareTo(DBID o)

Specified by:

compareTo in interface Comparable<DBID>

asCollection

public Collection<DBID> asCollection()

Description copied from interface: DBIDs

Retrieve collection access to the IDs

Specified by:

asCollection in interface DBIDs

Returns:

a collection of IDs

contains

public boolean contains(Object o)

Description copied from interface: DBIDs

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

Specified by:

contains in interface DBIDs

Specified by:

contains in interface Collection<DBID>

Specified by:

contains in interface List<DBID>

Overrides:

contains in class AbstractCollection<DBID>

Parameters:

o - object to test

Returns:

true when contained

iterator

public Iterator<DBID> iterator()

Description copied from interface: DBIDs

Retrieve Iterator access to the IDs.

Specified by:

iterator in interface DBIDs

Specified by:

iterator in interface Iterable<DBID>

Specified by:

iterator in interface Collection<DBID>

Specified by:

iterator in interface List<DBID>

Overrides:

iterator in class AbstractList<DBID>

Returns:

an iterator for the IDs

size

public int size()

Description copied from interface: DBIDs

Retrieve the collection / data size.

Specified by:

size in interface DBIDs

Specified by:

size in interface Collection<DBID>

Specified by:

size in interface List<DBID>

Specified by:

size in class AbstractCollection<DBID>

Returns:

collection size

isEmpty

public boolean isEmpty()

Description copied from interface: DBIDs

Test for an empty DBID collection.

Specified by:

isEmpty in interface DBIDs

Specified by:

isEmpty in interface Collection<DBID>

Specified by:

isEmpty in interface List<DBID>

Overrides:

isEmpty in class AbstractCollection<DBID>

Returns:

true when empty.

get

public DBID get(int i)

Specified by:

get in interface List<DBID>

Specified by:

get in class AbstractList<DBID>