de.lmu.ifi.dbs.elki.database.relation

Class RelationUtil.CollectionFromRelation<O>

java.lang.Object

java.util.AbstractCollection<O>

de.lmu.ifi.dbs.elki.database.relation.RelationUtil.CollectionFromRelation<O>

All Implemented Interfaces:

Iterable<O>, Collection<O>

Enclosing class:

RelationUtil

public static class RelationUtil.CollectionFromRelation<O>
extends AbstractCollection<O>
implements Collection<O>

Collection view on a database that retrieves the objects when needed.

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field and Description
(package private) Relation<? extends O>	db The database we query.

Constructor Summary

Constructors

Constructor and Description
CollectionFromRelation(Relation<? extends O> db) Constructor.

Method Summary

Modifier and Type	Method and Description
Iterator<O>	iterator()
int	size()

Methods inherited from class java.util.AbstractCollection

add, addAll, clear, contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

add, addAll, clear, contains, containsAll, equals, hashCode, isEmpty, parallelStream, remove, removeAll, removeIf, retainAll, spliterator, stream, toArray, toArray

Methods inherited from interface java.lang.Iterable

forEach

Field Detail

db

Relation<? extends O> db

The database we query.

Constructor Detail

CollectionFromRelation

public CollectionFromRelation(Relation<? extends O> db)

Constructor.

Parameters:

db - Database

Method Detail

iterator

public Iterator<O> iterator()

Specified by:

iterator in interface Iterable<O>

Specified by:

iterator in interface Collection<O>

Specified by:

iterator in class AbstractCollection<O>

size

public int size()

Specified by:

size in interface Collection<O>

Specified by:

size in class AbstractCollection<O>