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ExtentAndNode.hpp

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00001 /*==========================================================================
00002  * Copyright (c) 2004 University of Massachusetts.  All Rights Reserved.
00003  *
00004  * Use of the Lemur Toolkit for Language Modeling and Information Retrieval
00005  * is subject to the terms of the software license set forth in the LICENSE
00006  * file included with this software, and also available at
00007  * http://www.lemurproject.org/license.html
00008  *
00009  *==========================================================================
00010  */
00011 
00012 
00013 //
00014 // ExtentAndNode
00015 //
00016 // 23 February 2004 -- tds
00017 //
00018 
00019 #ifndef INDRI_EXTENTANDNODE_HPP
00020 #define INDRI_EXTENTANDNODE_HPP
00021 
00022 #include "indri/ListIteratorNode.hpp"
00023 #include <vector>
00024 #include "indri/greedy_vector"
00025 namespace indri 
00026 {
00027   namespace infnet
00028   {
00029     
00030     class ExtentAndNode : public ListIteratorNode {
00031     private:
00032       std::vector<ListIteratorNode*> _children;
00033       indri::utility::greedy_vector<indri::index::Extent> _extents;
00034       indri::utility::greedy_vector<indri::index::Extent> _partialExtents;
00035       std::string _name;
00036 
00037       void _and( indri::utility::greedy_vector<indri::index::Extent>& out, const indri::utility::greedy_vector<indri::index::Extent>& one, const indri::utility::greedy_vector<indri::index::Extent>& two );
00038 
00039     public:
00040       ExtentAndNode( const std::string& name, std::vector<ListIteratorNode*>& children );
00041       void prepare( lemur::api::DOCID_T documentID );
00042       const indri::utility::greedy_vector<indri::index::Extent>& extents();
00043       lemur::api::DOCID_T nextCandidateDocument();
00044       void indexChanged( indri::index::Index& index );
00045       const std::string& getName() const;
00046       void annotate( class Annotator& annotator, lemur::api::DOCID_T documentID, indri::index::Extent &extent );
00047     };
00048   }
00049 }
00050 
00051 #endif //INDRI_EXTENTANDNODE_HPP
00052 

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