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java.lang.Objectorg.apache.lucene.search.Searcher
org.apache.lucene.search.MultiSearcher
org.apache.lucene.search.ParallelMultiSearcher
public class ParallelMultiSearcher
Implements parallel search over a set of Searchables
.
Applications usually need only call the inherited Searcher.search(Query)
or Searcher.search(Query,Filter)
methods.
Constructor Summary | |
---|---|
ParallelMultiSearcher(Searchable[] searchables)
Creates a searcher which searches searchables. |
Method Summary | |
---|---|
int |
docFreq(Term term)
TODO: parallelize this one too |
Query |
rewrite(Query original)
Expert: called to re-write queries into primitive queries. |
void |
search(Weight weight,
Filter filter,
HitCollector results)
Lower-level search API. |
TopDocs |
search(Weight weight,
Filter filter,
int nDocs)
A search implementation which spans a new thread for each Searchable, waits for each search to complete and merge the results back together. |
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. |
Methods inherited from class org.apache.lucene.search.MultiSearcher |
---|
close, createWeight, doc, doc, explain, getSearchables, getStarts, maxDoc, subDoc, subSearcher |
Methods inherited from class org.apache.lucene.search.Searcher |
---|
docFreqs, explain, getSimilarity, search, search, search, search, search, search, search, search, search, setSimilarity |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public ParallelMultiSearcher(Searchable[] searchables) throws java.io.IOException
java.io.IOException
Method Detail |
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public int docFreq(Term term) throws java.io.IOException
docFreq
in interface Searchable
docFreq
in class MultiSearcher
java.io.IOException
IndexReader.docFreq(Term)
public TopDocs search(Weight weight, Filter filter, int nDocs) throws java.io.IOException
search
in interface Searchable
search
in class MultiSearcher
java.io.IOException
public TopFieldDocs search(Weight weight, Filter filter, int nDocs, Sort sort) throws java.io.IOException
search
in interface Searchable
search
in class MultiSearcher
java.io.IOException
public void search(Weight weight, Filter filter, HitCollector results) throws java.io.IOException
HitCollector.collect(int,float)
is called for every matching
document.
Applications should only use this if they need all of the
matching documents. The high-level search API (Searcher.search(Query)
) is usually more efficient, as it skips
non-high-scoring hits.
search
in interface Searchable
search
in class MultiSearcher
weight
- to match documentsfilter
- if non-null, a bitset used to eliminate some documentsresults
- to receive hits
java.io.IOException
public Query rewrite(Query original) throws java.io.IOException
Searchable
rewrite
in interface Searchable
rewrite
in class MultiSearcher
java.io.IOException
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