com.exalead.search.query.linguistic

Class RegexpExpander

java.lang.Object

com.exalead.search.query.node.NodeVisitor

com.exalead.search.query.linguistic.RegexpExpander

public class RegexpExpander
extends NodeVisitor

Perform linguistic expansion of patterns in the user query.
This step transforms the "UserQueryRegexp" and "UserQueryChunk" (with prefix or suffix options) objects in their pattern expansions, represented as UserQueryChunk.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	RegexpExpander.PrefixSuffixStatus

Constructor Summary

Constructors

Constructor and Description
RegexpExpander()
RegexpExpander(com.exalead.flis.FLISServiceClient dictionary, UQLConfig uqlConfig)

Method Summary

Modifier and Type	Method and Description
protected RegexpExpander.PrefixSuffixStatus	checkPrefixSuffix(java.lang.String word)
protected Node	currentExpansion(UserQueryElement node)
protected com.exalead.dictionary.messages.PatternAnswerList	doQuery(com.exalead.dictionary.messages.PatternQueryList ql)
protected void	handleDictionaryError(java.lang.Exception e)
int	matchingMode2Level(TextNode.TextProcessingOptions.MatchingMode matchingMode)
protected java.lang.String	normalizePattern(java.lang.String pattern)
protected Node	reject(UserQueryChunk node)
protected Node	reject(UserQueryRegexp node)
void	reset()
void	setParameters(PatternsExpansionConfig config)
void	setParameters(PatternsExpansionConfig config, ParsingConfig.ImplicitSequenceOperator dynamicImplicitSequenceOperator)
Node	visit(PrefixNode node)
Node	visit(RootNode root)
Node	visit(UserQueryChunk node)
Node	visit(UserQueryRegexp rex)

Methods inherited from class com.exalead.search.query.node.NodeVisitor

visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visitNary, visitUnary

Methods inherited from class java.lang.Object

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

Constructor Detail

RegexpExpander

public RegexpExpander()

RegexpExpander

public RegexpExpander(com.exalead.flis.FLISServiceClient dictionary,
                      UQLConfig uqlConfig)

Method Detail

setParameters

public void setParameters(PatternsExpansionConfig config,
                          ParsingConfig.ImplicitSequenceOperator dynamicImplicitSequenceOperator)

setParameters

public void setParameters(PatternsExpansionConfig config)

reset

public void reset()

visit

public Node visit(PrefixNode node)
           throws QueryProcessingException

Overrides:

visit in class NodeVisitor

Throws:

QueryProcessingException

visit

public Node visit(UserQueryRegexp rex)
           throws QueryProcessingException

Overrides:

visit in class NodeVisitor

Throws:

QueryProcessingException

matchingMode2Level

public int matchingMode2Level(TextNode.TextProcessingOptions.MatchingMode matchingMode)

visit

public Node visit(UserQueryChunk node)
           throws QueryProcessingException

Overrides:

visit in class NodeVisitor

Throws:

QueryProcessingException

visit

public Node visit(RootNode root)
           throws QueryProcessingException

Overrides:

visit in class NodeVisitor

Throws:

QueryProcessingException

checkPrefixSuffix

protected RegexpExpander.PrefixSuffixStatus checkPrefixSuffix(java.lang.String word)

reject

protected Node reject(UserQueryChunk node)
               throws QueryProcessingException

Throws:

QueryProcessingException

reject

protected Node reject(UserQueryRegexp node)
               throws QueryProcessingException

Throws:

QueryProcessingException

currentExpansion

protected Node currentExpansion(UserQueryElement node)

doQuery

protected com.exalead.dictionary.messages.PatternAnswerList doQuery(com.exalead.dictionary.messages.PatternQueryList ql)
                                                             throws java.lang.Exception

Throws:

java.lang.Exception

normalizePattern

protected java.lang.String normalizePattern(java.lang.String pattern)

handleDictionaryError

protected void handleDictionaryError(java.lang.Exception e)
                              throws QueryProcessingException

Throws:

QueryProcessingException