gate.creole.annic.lucene
Class LuceneSearcher

java.lang.Object
  gate.creole.annic.lucene.LuceneSearcher

All Implemented Interfaces:

Searcher

public class LuceneSearcher
extends Object
implements Searcher

This class provides the Searching functionality for annic.

Author:

niraj

Field Summary

Map<String,List<String>>

annotationTypesMap Found annotation types in the annic patterns.

Constructor Summary

LuceneSearcher()

Method Summary

void	addQueryTokens(String query, List<String> queryTokens) Adds the query tokens for the given query.
void	exportResults(File outputFile) This method allow exporting results in to the provided file.
int	freq(List<Hit> patternsToSearchIn, String annotationType, boolean inMatchedSpan, boolean inContext)
int	freq(List<Hit> patternsToSearchIn, String annotationType, String feature, String value, boolean inMatchedSpan, boolean inContext)
int	freq(String corpusToSearchIn, String annotationSetToSearchIn, String annotationType)
int	freq(String corpusToSearchIn, String annotationSetToSearchIn, String annotationType, String featureName)
int	freq(String corpusToSearchIn, String annotationSetToSearchIn, String annotationType, String featureName, String value)
Map<String,Integer>	freqForAllValues(List<Hit> patternsToSearchIn, String annotationType, String feature, boolean inMatchedSpan, boolean inContext)
Map<String,List<String>>	getAnnotationTypesMap() Gets the map of found annotation types and annotation features.
Integer	getContextWindow() Gets the number of base token annotations to show in the context.
Hit[]	getHits() Gets the found hits (annic patterns).
String[]	getIndexedAnnotationSetNames() This method returns a set of annotation set names that are indexed.
Map<String,Object>	getParameters() Gets the search parameters set by user.
String	getQuery() Gets the submitted query.
List<String>	getQueryTokens(String query) Gets the query tokens for the given query.
Hit[]	next(int numberOfHits) Return the next numberOfHits -1 indicates all
boolean	search(String query, Map<String,Object> parameters) Method retunrs true/false indicating whether results were found or not.
void	setLuceneDatastore(LuceneDataStoreImpl datastore)

Methods inherited from class java.lang.Object

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

Field Detail

annotationTypesMap

public Map<String,List<String>> annotationTypesMap

Found annotation types in the annic patterns. The maps keeps record of found annotation types and features for each of them.

Constructor Detail

LuceneSearcher

public LuceneSearcher()

Method Detail

next

public Hit[] next(int numberOfHits)
           throws SearchException

Return the next numberOfHits -1 indicates all

Specified by:

next in interface Searcher

Throws:

SearchException

search

public boolean search(String query,
                      Map<String,Object> parameters)
               throws SearchException

Method retunrs true/false indicating whether results were found or not.

Specified by:

search in interface Searcher

Throws:

SearchException

getQuery

public String getQuery()

Gets the submitted query.

Specified by:

getQuery in interface Searcher

getContextWindow

public Integer getContextWindow()

Gets the number of base token annotations to show in the context.

getHits

public Hit[] getHits()

Gets the found hits (annic patterns).

Specified by:

getHits in interface Searcher

getAnnotationTypesMap

public Map<String,List<String>> getAnnotationTypesMap()

Gets the map of found annotation types and annotation features. This call must be invoked only after a call to the getIndexedAnnotationSetNames(String indexLocation) method. Otherwise this method doesn't guranttee the correct results. The results obtained has the following format. Key: CorpusName;AnnotationSetName;AnnotationType Value: respective features

Specified by:

getAnnotationTypesMap in interface Searcher

getIndexedAnnotationSetNames

public String[] getIndexedAnnotationSetNames()
                                      throws SearchException

This method returns a set of annotation set names that are indexed. Each entry has the following format:

corpusName;annotationSetName

where, the corpusName is the name of the corpus the annotationSetName belongs to.

Specified by:

getIndexedAnnotationSetNames in interface Searcher

Throws:

SearchException

getParameters

public Map<String,Object> getParameters()

Gets the search parameters set by user.

Specified by:

getParameters in interface Searcher

getQueryTokens

public List<String> getQueryTokens(String query)

Gets the query tokens for the given query.

addQueryTokens

public void addQueryTokens(String query,
                           List<String> queryTokens)

Adds the query tokens for the given query.

exportResults

public void exportResults(File outputFile)

This method allow exporting results in to the provided file. This method has not been implemented yet.

Specified by:

exportResults in interface Searcher

freq

public int freq(String corpusToSearchIn,
                String annotationSetToSearchIn,
                String annotationType,
                String featureName,
                String value)
         throws SearchException

Specified by:

freq in interface Searcher

Throws:

SearchException

freq

public int freq(String corpusToSearchIn,
                String annotationSetToSearchIn,
                String annotationType)
         throws SearchException

Specified by:

freq in interface Searcher

Throws:

SearchException

freq

public int freq(String corpusToSearchIn,
                String annotationSetToSearchIn,
                String annotationType,
                String featureName)
         throws SearchException

Specified by:

freq in interface Searcher

Throws:

SearchException

freq

public int freq(List<Hit> patternsToSearchIn,
                String annotationType,
                String feature,
                String value,
                boolean inMatchedSpan,
                boolean inContext)
         throws SearchException

Specified by:

freq in interface Searcher

Throws:

SearchException

freq

public int freq(List<Hit> patternsToSearchIn,
                String annotationType,
                boolean inMatchedSpan,
                boolean inContext)
         throws SearchException

Specified by:

freq in interface Searcher

Throws:

SearchException

freqForAllValues

public Map<String,Integer> freqForAllValues(List<Hit> patternsToSearchIn,
                                            String annotationType,
                                            String feature,
                                            boolean inMatchedSpan,
                                            boolean inContext)
                                     throws SearchException

Specified by:

freqForAllValues in interface Searcher

Throws:

SearchException

setLuceneDatastore

public void setLuceneDatastore(LuceneDataStoreImpl datastore)