net.sf.saxon.value
Class StringValue.CharacterIterator

java.lang.Object
  net.sf.saxon.value.StringValue.CharacterIterator

All Implemented Interfaces:

SequenceIterator, UnfailingIterator

Enclosing class:

StringValue

public final class StringValue.CharacterIterator
extends Object
implements UnfailingIterator

CharacterIterator is used to iterate over the characters in a string, returning them as integers representing the Unicode code-point.

Field Summary

Fields inherited from interface net.sf.saxon.om.SequenceIterator

GROUNDED, LAST_POSITION_FINDER, LOOKAHEAD

Constructor Summary

StringValue.CharacterIterator()
Create an iterator over a string

Method Summary

void	close() Close the iterator.
Item	current() Get the current item in the sequence.
SequenceIterator	getAnother() Get another iterator over the same sequence of items, positioned at the start of the sequence.
int	getProperties() Get properties of this iterator, as a bit-significant integer.
Item	next() Get the next item in the sequence.
int	position() Get the current position

Methods inherited from class java.lang.Object

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

Constructor Detail

StringValue.CharacterIterator

public StringValue.CharacterIterator()

Create an iterator over a string

Method Detail

next

public Item next()

Description copied from interface: UnfailingIterator

Get the next item in the sequence.

Specified by:

next in interface SequenceIterator

Specified by:

next in interface UnfailingIterator

Returns:

the next Item. If there are no more nodes, return null.

current

public Item current()

Description copied from interface: UnfailingIterator

Get the current item in the sequence.

Specified by:

current in interface SequenceIterator

Specified by:

current in interface UnfailingIterator

Returns:

the current item, that is, the item most recently returned by next()

position

public int position()

Description copied from interface: UnfailingIterator

Get the current position

Specified by:

position in interface SequenceIterator

Specified by:

position in interface UnfailingIterator

Returns:

the position of the current item (the item most recently returned by next()), starting at 1 for the first node

close

public void close()

Description copied from interface: SequenceIterator

Close the iterator. This indicates to the supplier of the data that the client does not require any more items to be delivered by the iterator. This may enable the supplier to release resources. After calling close(), no further calls on the iterator should be made; if further calls are made, the effect of such calls is undefined.

(Currently, closing an iterator is important only when the data is being "pushed" in another thread. Closing the iterator terminates that thread and means that it needs to do no additional work. Indeed, failing to close the iterator may cause the push thread to hang waiting for the buffer to be emptied.)

Specified by:

close in interface SequenceIterator

getAnother

public SequenceIterator getAnother()

Description copied from interface: UnfailingIterator

Get another iterator over the same sequence of items, positioned at the start of the sequence. It must be possible to call this method at any time, whether none, some, or all of the items in the original iterator have been read. The method is non-destructive: it does not change the state of the original iterator.

Specified by:

getAnother in interface SequenceIterator

Specified by:

getAnother in interface UnfailingIterator

Returns:

a new iterator over the same sequence

getProperties

public int getProperties()

Get properties of this iterator, as a bit-significant integer.

Specified by:

getProperties in interface SequenceIterator

Returns:

the properties of this iterator. This will be some combination of properties such as SequenceIterator.GROUNDED and SequenceIterator.LAST_POSITION_FINDER. It is always acceptable to return the value zero, indicating that there are no known special properties.