com.bigdata.relation.accesspath
Interface IMultiSourceCloseableIterator<E>

All Superinterfaces:

ICloseableIterator<E>, Iterator<E>

All Known Implementing Classes:

MultiSourceSequentialCloseableIterator

public interface IMultiSourceCloseableIterator<E>
extends ICloseableIterator<E>

An interface which permits new sources to be attached dynamically. The decision to accept a new source via add(ICloseableIterator) or to ICloseableIterator.close() the iterator must be atomic. In particular, it is illegal for a source to be accepted after the iterator has been closed.

Version:

$Id: IMultiSourceCloseableIterator.java 6024 2012-02-13 18:53:58Z thompsonbry $

Author:

Bryan Thompson

Method Summary

boolean

add(ICloseableIterator<E> src) Add a source.

Methods inherited from interface com.bigdata.striterator.ICloseableIterator

close

Methods inherited from interface java.util.Iterator

hasNext, next, remove

Method Detail

add

boolean add(ICloseableIterator<E> src)

Add a source. If the iterator already reports that it is closed then the new source can not be added and this method will return false.

Parameters:

src - The source.

Returns:

true iff the source could be added.