org.galagosearch.core.retrieval.structured
Class MoveIterators

java.lang.Object
  org.galagosearch.core.retrieval.structured.MoveIterators

public class MoveIterators
extends java.lang.Object

Author:

trevor

Constructor Summary

MoveIterators()

Method Summary

static boolean	allSameDocument(ExtentIterator[] iterators)
static int	findMaximumDocument(ExtentIterator[] iterators)
static int	findMinimumCandidate(ScoreIterator[] iterators)
static int	findMinimumDocument(ExtentIterator[] iterators)
static int	moveAllToSameDocument(ExtentIterator[] iterators) Moves all iterators in the array to the same document.

Methods inherited from class java.lang.Object

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

Constructor Detail

MoveIterators

public MoveIterators()

Method Detail

moveAllToSameDocument

public static int moveAllToSameDocument(ExtentIterator[] iterators)
                                 throws java.io.IOException

Moves all iterators in the array to the same document. This method will only stop at documents where all of the iterators have a match. This code assumes that the most selective iterator (the one with the fewest document matches) is the first one.

Returns:

The document number that the iterators are now pointing to, or Integer.MAX_VALUE if one of the iterators is now done.

Throws:

java.io.IOException

allSameDocument

public static boolean allSameDocument(ExtentIterator[] iterators)

findMaximumDocument

public static int findMaximumDocument(ExtentIterator[] iterators)

findMinimumDocument

public static int findMinimumDocument(ExtentIterator[] iterators)

findMinimumCandidate

public static int findMinimumCandidate(ScoreIterator[] iterators)