| java.lang.Object | |||
| ↳ | org.apache.lucene.search.Searcher | ||
| ↳ | org.apache.lucene.search.MultiSearcher | ||
| ↳ | org.apache.lucene.search.ParallelMultiSearcher | ||
Class Overview
Implements parallel search over a set of Searchables.
Applications usually need only call the inherited search(Query, int)
or search(Query, Filter, int) methods.
Summary
| Public Constructors | |||||||||||
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Creates a
Searchable which searches searchables. | |||||||||||
| Public Methods | |||||||||||
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Frees resources associated with this Searcher.
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Executes each
Searchable's docFreq() in its own thread and waits for each search to complete and merge
the results back together. | |||||||||||
A search implementation which executes each
Searchable in its own thread and waits for each search to complete and merge
the results back together. | |||||||||||
A search implementation allowing sorting which spans a new thread for each
Searchable, waits for each search to complete and merges
the results back together.
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Lower-level search API.
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[Expand]
Inherited Methods | |||||||||||
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From class
org.apache.lucene.search.MultiSearcher
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From class
org.apache.lucene.search.Searcher
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From class
java.lang.Object
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From interface
java.io.Closeable
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From interface
org.apache.lucene.search.Searchable
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Public Constructors
public ParallelMultiSearcher (Searchable... searchables)
Creates a Searchable which searches searchables.
Throws
| IOException |
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Public Methods
public void close ()
Frees resources associated with this Searcher. Be careful not to call this method while you are still using objects that reference this Searchable.
Throws
| IOException |
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public int docFreq (Term term)
Executes each Searchable's docFreq() in its own thread and waits for each search to complete and merge
the results back together.
Throws
| IOException |
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public TopDocs search (Weight weight, Filter filter, int nDocs)
A search implementation which executes each
Searchable in its own thread and waits for each search to complete and merge
the results back together.
Throws
| IOException |
|---|
public TopFieldDocs search (Weight weight, Filter filter, int nDocs, Sort sort)
A search implementation allowing sorting which spans a new thread for each Searchable, waits for each search to complete and merges the results back together.
Throws
| IOException |
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public void search (Weight weight, Filter filter, Collector collector)
Lower-level search API.
collect(int) is called for every matching document.
Applications should only use this if they need all of the
matching documents. The high-level search API (search(Query, int)) is usually more efficient, as it skips
non-high-scoring hits.
This method cannot be parallelized, because Collector
supports no concurrent access.
Parameters
| weight | to match documents |
|---|---|
| filter | if non-null, a bitset used to eliminate some documents |
| collector | to receive hits |
Throws
| IOException |
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