org.apache.lucene.analysis.tokenattributes

Interface OffsetAttribute

All Superinterfaces:

Attribute

All Known Implementing Classes:

OffsetAttributeImpl, PackedTokenAttributeImpl

public interface OffsetAttribute
extends Attribute

The start and end character offset of a Token.

Method Summary

Modifier and Type	Method and Description
int	endOffset() Returns this Token's ending offset, one greater than the position of the last character corresponding to this token in the source text.
void	setOffset(int startOffset, int endOffset) Set the starting and ending offset.
int	startOffset() Returns this Token's starting offset, the position of the first character corresponding to this token in the source text.

Method Detail

startOffset

int startOffset()

Returns this Token's starting offset, the position of the first character corresponding to this token in the source text.

Note that the difference between endOffset() and startOffset() may not be equal to termText.length(), as the term text may have been altered by a stemmer or some other filter.

See Also:

setOffset(int, int)

setOffset

void setOffset(int startOffset,
               int endOffset)

Set the starting and ending offset.

Throws:

IllegalArgumentException - If startOffset or endOffset are negative, or if startOffset is greater than endOffset

See Also:

startOffset(), endOffset()

endOffset

int endOffset()

Returns this Token's ending offset, one greater than the position of the last character corresponding to this token in the source text. The length of the token in the source text is (endOffset() - startOffset()).

See Also:

setOffset(int, int)