Frees resources associated with this Searcher. Be careful not to call this method while you are still using objects like {@link Hits}.

Expert: Returns the stored fields of document

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i

. Called by {@link HitCollector} implementations.

Get the {@link Lucene.Net.Documents.Document} at the

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n

^th position. The {@link Lucene.Net.Documents.FieldSelector} may be used to determine what {@link Lucene.Net.Documents.Field}s to load and how they should be loaded. NOTE: If the underlying Reader (more specifically, the underlying

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FieldsReader

) is closed before the lazy {@link Lucene.Net.Documents.Field} is loaded an exception may be thrown. If you want the value of a lazy {@link Lucene.Net.Documents.Field} to be available after closing you must explicitly load it or fetch the Document again with a new loader.

Expert: Returns the number of documents containing

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term

. Called by search code to compute term weights.

Expert: For each term in the terms array, calculates the number of documents containing

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term

. Returns an array with these document frequencies. Used to minimize number of remote calls.

Expert: low-level implementation method Returns an Explanation that describes how

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doc

scored against

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weight

.

This is intended to be used in developing Similarity implementations, and, for good performance, should not be displayed with every hit. Computing an explanation is as expensive as executing the query over the entire index.

Applications should call {@link Searcher#Explain(Query, int)}.

Expert: Returns one greater than the largest possible document number. Called by search code to compute term weights.

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

Lower-level search API.

{@link Collector#Collect(int)} is called for every document.
Collector-based access to remote indexes is discouraged.

Applications should only use this if they need all of the matching documents. The high-level search API ({@link Searcher#Search(Query)}) is usually more efficient, as it skips non-high-scoring hits.

Lower-level search API.

{@link HitCollector#Collect(int,float)} is called for every non-zero scoring document.
HitCollector-based access to remote indexes is discouraged.

Applications should only use this if they need all of the matching documents. The high-level search API ({@link Searcher#Search(Query)}) is usually more efficient, as it skips non-high-scoring hits.

Expert: Low-level search implementation. Finds the top

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n

hits for

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query

, applying

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filter

if non-null.

Called by {@link Hits}.

Applications should usually call {@link Searcher#Search(Query)} or {@link Searcher#Search(Query,Filter)} instead.

Expert: Low-level search implementation with arbitrary sorting. Finds the top

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n

hits for

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query

, applying

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filter

if non-null, and sorting the hits by the criteria in

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sort

.

Applications should usually call {@link Searcher#Search(Query,Filter,int,Sort)} instead.