Package org.apache.lucene.search.suggest.document

Class SuggestIndexSearcher

java.lang.Object

org.apache.lucene.search.IndexSearcher

org.apache.lucene.search.suggest.document.SuggestIndexSearcher

public class SuggestIndexSearcher
extends IndexSearcher

Adds document suggest capabilities to IndexSearcher. Any CompletionQuery can be used to suggest documents.

Use PrefixCompletionQuery for analyzed prefix queries, RegexCompletionQuery for regular expression prefix queries, FuzzyCompletionQuery for analyzed prefix with typo tolerance and ContextQuery to boost and/or filter suggestions by contexts

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

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.search.IndexSearcher

IndexSearcher.LeafSlice, IndexSearcher.TooManyClauses, IndexSearcher.TooManyNestedClauses

Field Summary

Fields inherited from class org.apache.lucene.search.IndexSearcher

leafContexts, readerContext

Constructor Summary

Constructors

Constructor	Description
SuggestIndexSearcher(IndexReader reader)	Creates a searcher with document suggest capabilities for reader.

Method Summary

Modifier and Type	Method	Description
TopSuggestDocs	suggest(CompletionQuery query, int n, boolean skipDuplicates)	Returns top n completion hits for query
void	suggest(CompletionQuery query, TopSuggestDocsCollector collector)	Lower-level suggest API.

Methods inherited from class org.apache.lucene.search.IndexSearcher

collectionStatistics, count, createWeight, doc, doc, doc, explain, explain, getDefaultQueryCache, getDefaultQueryCachingPolicy, getDefaultSimilarity, getExecutor, getIndexReader, getLeafContexts, getMaxClauseCount, getQueryCache, getQueryCachingPolicy, getSimilarity, getSlices, getTopReaderContext, rewrite, search, search, search, search, search, search, searchAfter, searchAfter, searchAfter, setDefaultQueryCache, setDefaultQueryCachingPolicy, setMaxClauseCount, setQueryCache, setQueryCachingPolicy, setSimilarity, setTimeout, slices, slices, termStatistics, timedOut, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

SuggestIndexSearcher

public SuggestIndexSearcher(IndexReader reader)

Creates a searcher with document suggest capabilities for reader.

Method Detail

suggest

public TopSuggestDocs suggest(CompletionQuery query,
                              int n,
                              boolean skipDuplicates)
                       throws IOException

Returns top n completion hits for query

Throws:

IOException

suggest

public void suggest(CompletionQuery query,
                    TopSuggestDocsCollector collector)
             throws IOException

Lower-level suggest API. Collects completion hits through collector for query.

TopSuggestDocsCollector.collect(int, CharSequence, CharSequence, float) is called for every matching completion hit.

Throws:

IOException