org.basex.query.xquery.iter
Class SeqIter

java.lang.Object
  org.basex.query.xquery.iter.Iter
      org.basex.query.xquery.iter.SeqIter

public final class SeqIter
extends Iter

Sequence Iterator.

Author:

Workgroup DBIS, University of Konstanz 2005-08, ISC License, Christian Gruen

Field Summary

Item[]	item Items.
int	pos Iterator.
int	size Size.

Fields inherited from class org.basex.query.xquery.iter.Iter

EMPTY

Constructor Summary

SeqIter()
Constructor.

SeqIter(Iter iter)
Constructor.

Method Summary

void	add(Item it) Adds a single item.
void	add(Iter iter) Adds the contents of an iterator.
static Iter	get(Item[] it, int s) Constructor.
Item	next() Returns the next item or null if no other items are found.
void	reset() Resets the iterator; can be optionally implemented.
long	size() Returns the number of entries.
java.lang.String	toString()

Methods inherited from class org.basex.query.xquery.iter.Iter

atomic, ebv, finish, seqErr

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

item

public Item[] item

Items.

size

public int size

Size.

pos

public int pos

Iterator.

Constructor Detail

SeqIter

public SeqIter()

Constructor.

SeqIter

public SeqIter(Iter iter)
        throws XQException

Constructor.

Parameters:

iter - iterator

Throws:

XQException - evaluation exception

Method Detail

get

public static Iter get(Item[] it,
                       int s)

Constructor.

Parameters:

it - item array

s - size

Returns:

iterator

add

public void add(Iter iter)
         throws XQException

Adds the contents of an iterator.

Parameters:

iter - entry to be added

Throws:

XQException - evaluation exception

add

public void add(Item it)

Adds a single item.

Parameters:

it - item to be added

next

public Item next()

Description copied from class: Iter

Returns the next item or null if no other items are found.

Specified by:

next in class Iter

Returns:

resulting item

reset

public void reset()

Description copied from class: Iter

Resets the iterator; can be optionally implemented.

Overrides:

reset in class Iter

size

public long size()

Description copied from class: Iter

Returns the number of entries. Warning: -1 is returned if the number cannot be evaluated, so each method has to check and react on the returned value.

Overrides:

size in class Iter

Returns:

number of entries

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object