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

Class IntegerDBIDRange.Itr

java.lang.Object

de.lmu.ifi.dbs.elki.database.ids.integer.IntegerDBIDRange.Itr

All Implemented Interfaces:

DBIDArrayIter, DBIDIter, DBIDRef, IntegerDBIDArrayIter, IntegerDBIDIter, IntegerDBIDRef, ArrayIter, Iter

Enclosing class:

IntegerDBIDRange

private static final class IntegerDBIDRange.Itr
extends Object
implements IntegerDBIDArrayIter

Iterator in ELKI/C++ style.

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field and Description
private int	len Interval length.
private int	pos Current position.
private int	start Interval start.

Constructor Summary

Constructors

Constructor and Description
IntegerDBIDRange.Itr(int start, int len) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
IntegerDBIDRange.Itr	advance() Moves the iterator forward to the next entry.
IntegerDBIDRange.Itr	advance(int count) Moves the iterator forward or backward by the given offset.
boolean	equals(Object other) WARNING: calling equality on a reference may be an indicator of incorrect usage, as it is not clear whether the programmer meant the references to be the same or the DBIDs.
int	getOffset() Get current iterator offset.
int	internalGetIndex() Return the integer value of the object ID.
IntegerDBIDRange.Itr	retract() Moves the iterator backward to the previous entry.
IntegerDBIDRange.Itr	seek(int off) Moves the iterator to the given position
String	toString()
boolean	valid() Returns true if the iterator currently points to a valid object.

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.lmu.ifi.dbs.elki.database.ids.DBIDRef

hashCode

Field Detail

pos

private int pos

Current position.

len

private final int len

Interval length.

start

private final int start

Interval start.

Constructor Detail

IntegerDBIDRange.Itr

public IntegerDBIDRange.Itr(int start,
                    int len)

Constructor.

Parameters:

start - Interval start

len - Interval length

Method Detail

valid

public boolean valid()

Description copied from interface: Iter

Returns true if the iterator currently points to a valid object.

Specified by:

valid in interface Iter

Returns:

a boolean value, whether the position is valid.

advance

public IntegerDBIDRange.Itr advance()

Description copied from interface: Iter

Moves the iterator forward to the next entry.

Specified by:

advance in interface DBIDArrayIter

Specified by:

advance in interface DBIDIter

Specified by:

advance in interface ArrayIter

Specified by:

advance in interface Iter

Returns:

The iterator itself.

advance

public IntegerDBIDRange.Itr advance(int count)

Description copied from interface: ArrayIter

Moves the iterator forward or backward by the given offset.

Specified by:

advance in interface DBIDArrayIter

Specified by:

advance in interface ArrayIter

Parameters:

count - offset to move forward or backwards

Returns:

Iterator

retract

public IntegerDBIDRange.Itr retract()

Description copied from interface: ArrayIter

Moves the iterator backward to the previous entry.

Specified by:

retract in interface DBIDArrayIter

Specified by:

retract in interface ArrayIter

Returns:

Iterator

seek

public IntegerDBIDRange.Itr seek(int off)

Description copied from interface: ArrayIter

Moves the iterator to the given position

Specified by:

seek in interface DBIDArrayIter

Specified by:

seek in interface ArrayIter

Parameters:

off - Seek offset

Returns:

Iterator

getOffset

public int getOffset()

Description copied from interface: ArrayIter

Get current iterator offset.

Specified by:

getOffset in interface ArrayIter

Returns:

Iterator position

internalGetIndex

public int internalGetIndex()

Description copied from interface: IntegerDBIDRef

Return the integer value of the object ID.

Specified by:

internalGetIndex in interface DBIDRef

Specified by:

internalGetIndex in interface IntegerDBIDRef

Returns:

integer id

equals

public boolean equals(Object other)

Description copied from interface: DBIDRef

WARNING: calling equality on a reference may be an indicator of incorrect usage, as it is not clear whether the programmer meant the references to be the same or the DBIDs. Use DBIDUtil.equal(de.lmu.ifi.dbs.elki.database.ids.DBIDRef, de.lmu.ifi.dbs.elki.database.ids.DBIDRef) or DBIDUtil.compare(de.lmu.ifi.dbs.elki.database.ids.DBIDRef, de.lmu.ifi.dbs.elki.database.ids.DBIDRef)!

Specified by:

equals in interface DBIDRef

Overrides:

equals in class Object

Parameters:

other - Object to compare with

Returns:

True when they are the same object

toString

public String toString()

Overrides:

toString in class Object