org.apache.lucene.index

Interface TermPositionVector

All Superinterfaces:
TermFreqVector
Known Implementing Classes:
SegmentTermPositionVector

public interface TermPositionVector
extends TermFreqVector

Extends TermFreqVector to provide additional information about positions in which each of the terms is found. A TermPositionVector not necessarily contains both positions and offsets, but at least one of these arrays exists.

Method Summary

TermVectorOffsetInfo[]
getOffsets(int index)
Returns an array of TermVectorOffsetInfo in which the term is found.
int[]
getTermPositions(int index)
Returns an array of positions in which the term is found.

Methods inherited from interface org.apache.lucene.index.TermFreqVector

getField, getTermFrequencies, getTerms, indexOf, indexesOf, size

Method Details

getOffsets

public TermVectorOffsetInfo[] getOffsets(int index)
Returns an array of TermVectorOffsetInfo in which the term is found. May return null if offsets have not been stored.
Parameters:
index - The position in the array to get the offsets from
Returns:
An array of TermVectorOffsetInfo objects or the empty list
See Also:
Token

getTermPositions

public int[] getTermPositions(int index)
Returns an array of positions in which the term is found. Terms are identified by the index at which its number appears in the term String array obtained from the indexOf method. May return null if positions have not been stored.

Copyright © 2000-2007 Apache Software Foundation. All Rights Reserved.