author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 19 Apr 2010 14:40:16 +0300 | |
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child 15 | cf5c74390b98 |
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permissions | -rw-r--r-- |
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/*------------------------------------------------------------------------------ |
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* Copyright (C) 2003-2006 Ben van Klinken and the CLucene Team |
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* |
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* Distributable under the terms of either the Apache License (Version 2.0) or |
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* the GNU Lesser General Public License, as specified in the COPYING file. |
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------------------------------------------------------------------------------*/ |
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#ifndef _lucene_search_multisearcher |
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#define _lucene_search_multisearcher |
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#if defined(_LUCENE_PRAGMA_ONCE) |
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# pragma once |
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#endif |
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#include "clucene/search/searchheader.h" |
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#include "clucene/document/document.h" |
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#include "clucene/index/term.h" |
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CL_NS_DEF(search) |
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class MultiHitCollector: public HitCollector{ |
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private: |
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HitCollector* results; |
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int32_t start; |
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public: |
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MultiHitCollector(HitCollector* _results, int32_t _start); |
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void collect(const int32_t doc, const float_t score) ; |
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}; |
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/** Implements search over a set of <code>Searchables</code>. |
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* |
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* <p>Applications usually need only call the inherited {@link #search(Query)} |
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* or {@link #search(Query,Filter)} methods. |
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*/ |
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class MultiSearcher: public Searcher { |
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private: |
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Searchable** searchables; |
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int32_t searchablesLen; |
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int32_t* starts; |
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int32_t _maxDoc; |
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protected: |
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int32_t* getStarts() { |
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return starts; |
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} |
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public: |
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/** Creates a searcher which searches <i>Searchables</i>. */ |
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MultiSearcher(Searchable** searchables); |
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~MultiSearcher(); |
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/** Frees resources associated with this <code>Searcher</code>. */ |
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void close() ; |
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int32_t docFreq(const CL_NS(index)::Term* term) const ; |
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/** For use by {@link HitCollector} implementations. */ |
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bool doc(int32_t n, CL_NS(document)::Document* document); |
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/** For use by {@link HitCollector} implementations to identify the |
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* index of the sub-searcher that a particular hit came from. */ |
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int32_t searcherIndex(int32_t n) const; |
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int32_t subSearcher(int32_t n) const; |
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int32_t subDoc(int32_t n) const; |
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int32_t maxDoc() const; |
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TopDocs* _search(Query* query, Filter* filter, const int32_t nDocs) ; |
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TopFieldDocs* _search (Query* query, Filter* filter, const int32_t n, const Sort* sort); |
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/** Lower-level search API. |
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* |
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* <p>{@link HitCollector#collect(int32_t,float_t)} is called for every non-zero |
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* scoring document. |
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* |
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* <p>Applications should only use this if they need <i>all</i> of the |
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* matching documents. The high-level search API ({@link |
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* Searcher#search(Query)}) is usually more efficient, as it skips |
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* non-high-scoring hits. |
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* |
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* @param query to match documents |
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* @param filter if non-null, a bitset used to eliminate some documents |
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* @param results to receive hits |
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*/ |
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void _search(Query* query, Filter* filter, HitCollector* results); |
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Query* rewrite(Query* original); |
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void explain(Query* query, int32_t doc, Explanation* ret); |
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}; |
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CL_NS_END |
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#endif |