no.sesat.search.query.transform
Class RegexpQueryTransformer

java.lang.Object
  no.sesat.commons.visitor.AbstractReflectionVisitor
      no.sesat.search.query.transform.AbstractQueryTransformer
          no.sesat.search.query.transform.RegexpQueryTransformer

All Implemented Interfaces:

no.sesat.commons.visitor.Visitor, QueryTransformer

public final class RegexpQueryTransformer
extends AbstractQueryTransformer

A transformer to apply a regular expression to each term. TODO Does not handle multi-term applications yet. If the regular expression has a capturing group, it is only that group that is replacement, not the match to the whole regular expression. It is therefore critical to use non-capturing groups for |?+* operations in the expressions.

Version:

$Id: RegexpQueryTransformer.java 7225 2009-04-09 00:32:20Z ssmiweve $

Nested Class Summary

Nested classes/interfaces inherited from interface no.sesat.search.query.transform.QueryTransformer

QueryTransformer.Context

Field Summary

Fields inherited from class no.sesat.commons.visitor.AbstractReflectionVisitor

VISIT_METHOD_IMPL

Constructor Summary

RegexpQueryTransformer(QueryTransformerConfig config)

Method Summary

void	visitImpl(BinaryClause clause)
void	visitImpl(LeafClause clause)
void	visitImpl(UnaryClause clause)

Methods inherited from class no.sesat.search.query.transform.AbstractQueryTransformer

getContext, getFilter, getFilter, getTransformedQuery, setContext, visitImpl, visitImpl

Methods inherited from class no.sesat.commons.visitor.AbstractReflectionVisitor

visit

Methods inherited from class java.lang.Object

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

Methods inherited from interface no.sesat.commons.visitor.Visitor

visit

Constructor Detail

RegexpQueryTransformer

public RegexpQueryTransformer(QueryTransformerConfig config)

Parameters:

config -

Method Detail

visitImpl

public void visitImpl(LeafClause clause)

Parameters:

clause - The clause to prefix.

visitImpl

public void visitImpl(BinaryClause clause)

Parameters:

clause - The clause to prefix.

visitImpl

public void visitImpl(UnaryClause clause)

Parameters:

clause - The clause to prefix.