Package org.apache.lucene.search.uhighlight

Class TokenStreamOffsetStrategy

java.lang.Object

org.apache.lucene.search.uhighlight.FieldOffsetStrategy

org.apache.lucene.search.uhighlight.AnalysisOffsetStrategy

org.apache.lucene.search.uhighlight.TokenStreamOffsetStrategy

public class TokenStreamOffsetStrategy
extends AnalysisOffsetStrategy

Analyzes the text, producing a single OffsetsEnum wrapping the TokenStream filtered to terms in the query, including wildcards. It can't handle position-sensitive queries (phrases). Passage accuracy suffers because the freq() is unknown -- it's always Integer.MAX_VALUE instead.

Field Summary

Fields inherited from class org.apache.lucene.search.uhighlight.AnalysisOffsetStrategy

analyzer

Fields inherited from class org.apache.lucene.search.uhighlight.FieldOffsetStrategy

components

Constructor Summary

Constructors

Constructor	Description
TokenStreamOffsetStrategy(UHComponents components, Analyzer indexAnalyzer)

Method Summary

Modifier and Type	Method	Description
OffsetsEnum	getOffsetsEnum(LeafReader reader, int docId, String content)	The primary method -- return offsets for highlightable words in the specified document.

Methods inherited from class org.apache.lucene.search.uhighlight.AnalysisOffsetStrategy

getOffsetSource, tokenStream

Methods inherited from class org.apache.lucene.search.uhighlight.FieldOffsetStrategy

createOffsetsEnumFromReader, createOffsetsEnumsForAutomata, createOffsetsEnumsForTerms, createOffsetsEnumsWeightMatcher, getField

Methods inherited from class java.lang.Object

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

Constructor Detail

TokenStreamOffsetStrategy

public TokenStreamOffsetStrategy(UHComponents components,
                                 Analyzer indexAnalyzer)

Method Detail

getOffsetsEnum

public OffsetsEnum getOffsetsEnum(LeafReader reader,
                                  int docId,
                                  String content)
                           throws IOException

Description copied from class: FieldOffsetStrategy

The primary method -- return offsets for highlightable words in the specified document. Callers are expected to close the returned OffsetsEnum when it has been finished with

Specified by:

getOffsetsEnum in class FieldOffsetStrategy

Throws:

IOException