org.apache.lucene.search

Class ParallelMultiSearcher

java.lang.Object

org.apache.lucene.search.Searcher

org.apache.lucene.search.MultiSearcher

org.apache.lucene.search.ParallelMultiSearcher

All Implemented Interfaces:

Closeable, Searchable

Deprecated.

Please pass an ExecutorService to IndexSearcher, instead.

@Deprecated
public class ParallelMultiSearcher
extends MultiSearcher

Implements parallel search over a set of Searchables.

Applications usually need only call the inherited Searcher.search(Query,int) or Searcher.search(Query,Filter,int) methods.

Constructor Summary

Constructors

Constructor and Description
ParallelMultiSearcher(ExecutorService executor, Searchable... searchables) Deprecated. Creates a Searchable which searches searchables with the specified ExecutorService.
ParallelMultiSearcher(Searchable... searchables) Deprecated. Creates a Searchable which searches searchables with the default executor service (a cached thread pool).

Method Summary

Methods

Modifier and Type	Method and Description
void	close() Deprecated. Frees resources associated with this Searcher.
int	docFreq(Term term) Deprecated. Executes each Searchable's docFreq() in its own thread and waits for each search to complete and merge the results back together.
void	search(Weight weight, Filter filter, Collector collector) Deprecated. Lower-level search API.
TopDocs	search(Weight weight, Filter filter, int nDocs) Deprecated. A search implementation which executes each Searchable in its own thread and waits for each search to complete and merge the results back together.
TopFieldDocs	search(Weight weight, Filter filter, int nDocs, Sort sort) Deprecated. 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

createNormalizedWeight, doc, doc, explain, getSearchables, getStarts, maxDoc, rewrite, subDoc, subSearcher

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

createWeight, docFreqs, explain, getSimilarity, 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

ParallelMultiSearcher

public ParallelMultiSearcher(Searchable... searchables)
                      throws IOException

Deprecated.

Creates a Searchable which searches searchables with the default executor service (a cached thread pool).

Throws:

IOException

ParallelMultiSearcher

public ParallelMultiSearcher(ExecutorService executor,
                     Searchable... searchables)
                      throws IOException

Deprecated.

Creates a Searchable which searches searchables with the specified ExecutorService.

Throws:

IOException

Method Detail

docFreq

public int docFreq(Term term)
            throws IOException

Deprecated.

Executes each Searchable's docFreq() in its own thread and waits for each search to complete and merge the results back together.

Specified by:

docFreq in interface Searchable

Overrides:

docFreq in class MultiSearcher

Throws:

IOException

See Also:

IndexReader.docFreq(Term)

search

public TopDocs search(Weight weight,
             Filter filter,
             int nDocs)
               throws IOException

Deprecated.

A search implementation which executes each Searchable in its own thread and waits for each search to complete and merge the results back together.

Specified by:

search in interface Searchable

Overrides:

search in class MultiSearcher

Throws:

IOException

search

public TopFieldDocs search(Weight weight,
                  Filter filter,
                  int nDocs,
                  Sort sort)
                    throws IOException

Deprecated.

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.

Specified by:

search in interface Searchable

Overrides:

search in class MultiSearcher

Throws:

IOException

search

public void search(Weight weight,
          Filter filter,
          Collector collector)
            throws IOException

Deprecated.

Lower-level search API.

Collector.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 (Searcher.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.

Specified by:

search in interface Searchable

Overrides:

search in class MultiSearcher

Parameters:

weight - to match documents

filter - if non-null, a bitset used to eliminate some documents

collector - to receive hits

Throws:

IOException

close

public void close()
           throws IOException

Deprecated.

Description copied from interface: Searchable

Frees resources associated with this Searcher. Be careful not to call this method while you are still using objects that reference this Searchable.

Specified by:

close in interface Closeable

Specified by:

close in interface Searchable

Overrides:

close in class MultiSearcher

Throws:

IOException