Package org.apache.lucene.sandbox.search

Class TokenStreamToTermAutomatonQuery

java.lang.Object

org.apache.lucene.sandbox.search.TokenStreamToTermAutomatonQuery

public class TokenStreamToTermAutomatonQuery
extends Object

Consumes a TokenStream and creates an TermAutomatonQuery where the transition labels are tokens from the TermToBytesRefAttribute.

This code is very new and likely has exciting bugs!

WARNING: This API is experimental and might change in incompatible ways in the next release.

Constructor Summary

Constructors

Constructor	Description
TokenStreamToTermAutomatonQuery()	Sole constructor.

Method Summary

Modifier and Type	Method	Description
void	setPreservePositionIncrements(boolean enablePositionIncrements)	Whether to generate holes in the automaton for missing positions, true by default.
TermAutomatonQuery	toQuery(String field, TokenStream in)	Pulls the graph (including PositionLengthAttribute) from the provided TokenStream, and creates the corresponding automaton where arcs are bytes (or Unicode code points if unicodeArcs = true) from each term.

Methods inherited from class java.lang.Object

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

Constructor Details

TokenStreamToTermAutomatonQuery

public TokenStreamToTermAutomatonQuery()

Sole constructor.

Method Details

setPreservePositionIncrements

public void setPreservePositionIncrements(boolean enablePositionIncrements)

Whether to generate holes in the automaton for missing positions, true by default.

toQuery

public TermAutomatonQuery toQuery(String field,
 TokenStream in)
                           throws IOException

Pulls the graph (including PositionLengthAttribute) from the provided TokenStream, and creates the corresponding automaton where arcs are bytes (or Unicode code points if unicodeArcs = true) from each term.

Throws:

IOException