Package elki.database.ids.integer

Class UnmodifiableIntegerDBIDs

java.lang.Object

elki.database.ids.integer.UnmodifiableIntegerDBIDs

All Implemented Interfaces:

DBIDs, IntegerDBIDs, StaticDBIDs

public class UnmodifiableIntegerDBIDs
extends java.lang.Object
implements StaticDBIDs, IntegerDBIDs

Unmodifiable wrapper for DBIDs.

Since:

0.5.0

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static class	UnmodifiableIntegerDBIDs.UnmodifiableDBIDIter	Make an existing DBIDMIter unmodifiable.

Field Summary

Fields

Modifier and Type	Field	Description
private IntegerDBIDs	inner	The DBIDs we wrap.

Constructor Summary

Constructors

Constructor	Description
UnmodifiableIntegerDBIDs(IntegerDBIDs inner)	Constructor.

Method Summary

Modifier and Type	Method	Description
boolean	contains(DBIDRef o)	Test whether an ID is contained.
boolean	isEmpty()	Test for an empty DBID collection.
IntegerDBIDIter	iter()	Get a DBID iterator (a more efficient API).
int	size()	Retrieve the collection / data size.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface elki.database.ids.DBIDs

forEach

Field Detail

inner

private final IntegerDBIDs inner

The DBIDs we wrap.

Constructor Detail

UnmodifiableIntegerDBIDs

public UnmodifiableIntegerDBIDs(IntegerDBIDs inner)

Constructor.

Parameters:

inner - Inner DBID collection.

Method Detail

contains

public boolean contains(DBIDRef o)

Description copied from interface: DBIDs

Test whether an ID is contained.

Specified by:

contains in interface DBIDs

Parameters:

o - object to test

Returns:

true when contained

isEmpty

public boolean isEmpty()

Description copied from interface: DBIDs

Test for an empty DBID collection.

Specified by:

isEmpty in interface DBIDs

Returns:

true when empty.

iter

public IntegerDBIDIter iter()

Description copied from interface: DBIDs

Get a DBID iterator (a more efficient API).

Example:

 
 for(DBIDIter iter = ids.iter(); iter.valid(); iter.advance()) {
   NumberVector vec = relation.get(iter); // iter is a temporary object reference
 }
 
 

Specified by:

iter in interface DBIDs

Specified by:

iter in interface IntegerDBIDs

Returns:

iterator

size

public int size()

Description copied from interface: DBIDs

Retrieve the collection / data size.

Specified by:

size in interface DBIDs

Returns:

collection size

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object