org.apache.lucene.search

Class AssertingIndexSearcher

java.lang.Object

org.apache.lucene.search.IndexSearcher

org.apache.lucene.search.AssertingIndexSearcher

public class AssertingIndexSearcher
extends IndexSearcher

Helper class that adds some extra checks to ensure correct usage of IndexSearcher and Weight.

Nested Class Summary

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

IndexSearcher.LeafSlice

Field Summary

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

leafContexts, leafSlices, readerContext

Constructor Summary

Constructors

Constructor and Description
AssertingIndexSearcher(Random random, IndexReader r)
AssertingIndexSearcher(Random random, IndexReaderContext context)
AssertingIndexSearcher(Random random, IndexReaderContext context, ExecutorService ex)
AssertingIndexSearcher(Random random, IndexReader r, ExecutorService ex)

Method Summary

Modifier and Type	Method and Description
Weight	createNormalizedWeight(Query query, boolean needsScores) Ensures, that the returned Weight is not normalized again, which may produce wrong scores.
Weight	createWeight(Query query, boolean needsScores) Creates a Weight for the given query, potentially adding caching if possible and configured.
Query	rewrite(Query original) Expert: called to re-write queries into primitive queries.
protected void	search(List<LeafReaderContext> leaves, Weight weight, Collector collector) Lower-level search API.
String	toString()

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

collectionStatistics, count, doc, doc, doc, explain, explain, getDefaultQueryCache, getDefaultQueryCachingPolicy, getDefaultSimilarity, getIndexReader, getSimilarity, getTopReaderContext, search, search, search, search, search, search, search, search, search, searchAfter, searchAfter, searchAfter, searchAfter, searchAfter, searchAfter, setDefaultQueryCache, setDefaultQueryCachingPolicy, setQueryCache, setQueryCachingPolicy, setSimilarity, slices, termStatistics, wrapFilter

Methods inherited from class java.lang.Object

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

Constructor Detail

AssertingIndexSearcher

public AssertingIndexSearcher(Random random,
                              IndexReader r)

AssertingIndexSearcher

public AssertingIndexSearcher(Random random,
                              IndexReaderContext context)

AssertingIndexSearcher

public AssertingIndexSearcher(Random random,
                              IndexReader r,
                              ExecutorService ex)

AssertingIndexSearcher

public AssertingIndexSearcher(Random random,
                              IndexReaderContext context,
                              ExecutorService ex)

Method Detail

createNormalizedWeight

public Weight createNormalizedWeight(Query query,
                                     boolean needsScores)
                              throws IOException

Ensures, that the returned Weight is not normalized again, which may produce wrong scores.

Overrides:

createNormalizedWeight in class IndexSearcher

Throws:

IOException

createWeight

public Weight createWeight(Query query,
                           boolean needsScores)
                    throws IOException

Description copied from class: IndexSearcher

Creates a Weight for the given query, potentially adding caching if possible and configured.

Overrides:

createWeight in class IndexSearcher

Throws:

IOException

rewrite

public Query rewrite(Query original)
              throws IOException

Description copied from class: IndexSearcher

Expert: called to re-write queries into primitive queries.

Overrides:

rewrite in class IndexSearcher

Throws:

IOException

search

protected void search(List<LeafReaderContext> leaves,
                      Weight weight,
                      Collector collector)
               throws IOException

Description copied from class: IndexSearcher

Lower-level search API.

LeafCollector.collect(int) is called for every document.

NOTE: this method executes the searches on all given leaves exclusively. To search across all the searchers leaves use IndexSearcher.leafContexts.

Overrides:

search in class IndexSearcher

Parameters:

leaves - the searchers leaves to execute the searches on

weight - to match documents

collector - to receive hits

Throws:

IOException

toString

public String toString()

Overrides:

toString in class IndexSearcher