com.exalead.search.query.linguistic

Class SpellChecker

java.lang.Object

com.exalead.search.query.node.NodeVisitor

com.exalead.search.query.linguistic.SpellChecker

public class SpellChecker
extends NodeVisitor

This visitor handles the spell-checking of a Text node.
It works before tokenization in order to be able to correct the spelling of chunks like "toure iffel" -> "tour eiffel".
Therefore, it must precede the other linguistic Visitors and especially the LinguisticExpander which tokenizes the raw Text chunks.
If inserted after the processor distributing linguistic options, it will avoid working on nodes that do not require expansion.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	SpellChecker.SpellCheckJob

Field Summary

Fields

Modifier and Type	Field and Description
SpellChecker.SpellCheckJob	job
protected static org.apache.log4j.Logger	logger

Constructor Summary

Constructors

Constructor and Description
SpellChecker(com.exalead.flis.FLISServiceClient dictionary)
SpellChecker(com.exalead.flis.FLISServiceClient dictionary, SpellCheckerConfig config) Create a spell-checker able to request the Dictionary. Please refer to the documentation to learn more about the Global Dictionary.

Method Summary

Modifier and Type	Method and Description
void	setBlackListedPrefixHandlers(SpellCheckerConfig config)
void	setSpellCheckerConfig(SpellCheckerConfig config)
Node	visit(ButNot node)
Node	visit(Not node)
Node	visit(PrefixNode node)
Node	visit(RootNode node)
Node	visit(Split node)
Node	visit(UserQueryChunk node)

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, visitNary, visitUnary

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected static final org.apache.log4j.Logger logger

job

public SpellChecker.SpellCheckJob job

Constructor Detail

SpellChecker

public SpellChecker(com.exalead.flis.FLISServiceClient dictionary,
                    SpellCheckerConfig config)

Create a spell-checker able to request the Dictionary.
Please refer to the documentation to learn more about the Global Dictionary.

Parameters:

dictionary - The HTTP user-agent connected to the Dictionary.

SpellChecker

public SpellChecker(com.exalead.flis.FLISServiceClient dictionary)

Method Detail

setSpellCheckerConfig

public void setSpellCheckerConfig(SpellCheckerConfig config)

setBlackListedPrefixHandlers

public void setBlackListedPrefixHandlers(SpellCheckerConfig config)

visit

public Node visit(RootNode node)
           throws QueryProcessingException

Overrides:

visit in class NodeVisitor

Throws:

QueryProcessingException

visit

public Node visit(PrefixNode node)
           throws QueryProcessingException

Overrides:

visit in class NodeVisitor

Throws:

QueryProcessingException

visit

public Node visit(Not node)
           throws QueryProcessingException

Overrides:

visit in class NodeVisitor

Throws:

QueryProcessingException

visit

public Node visit(ButNot node)
           throws QueryProcessingException

Overrides:

visit in class NodeVisitor

Throws:

QueryProcessingException

visit

public Node visit(Split node)
           throws QueryProcessingException

Overrides:

visit in class NodeVisitor

Throws:

QueryProcessingException

visit

public Node visit(UserQueryChunk node)

Overrides:

visit in class NodeVisitor