1 | /**********************************************************************
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2 | *
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3 | * phrasequeryfilter.cpp --
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4 | * Copyright (C) 1999 DigiLib Systems Limited, New Zealand
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5 | *
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6 | * A component of the Greenstone digital library software
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7 | * from the New Zealand Digital Library Project at the
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8 | * University of Waikato, New Zealand.
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9 | *
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10 | * This program is free software; you can redistribute it and/or modify
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11 | * it under the terms of the GNU General Public License as published by
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12 | * the Free Software Foundation; either version 2 of the License, or
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13 | * (at your option) any later version.
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14 | *
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15 | * This program is distributed in the hope that it will be useful,
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16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 | * GNU General Public License for more details.
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19 | *
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20 | * You should have received a copy of the GNU General Public License
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21 | * along with this program; if not, write to the Free Software
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22 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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23 | *
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24 | * $Id: phrasequeryfilter.cpp 534 1999-09-07 04:57:43Z sjboddie $
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25 | *
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26 | *********************************************************************/
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27 |
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28 | /*
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29 | $Log$
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30 | Revision 1.4 1999/09/07 04:57:23 sjboddie
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31 | added gpl notice
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32 |
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33 | Revision 1.3 1999/08/31 22:44:38 rjmcnab
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34 | Fixed small bug.
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35 |
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36 | Revision 1.2 1999/07/07 06:19:45 rjmcnab
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37 | Added ability to combine two or more independant queries.
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38 |
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39 | Revision 1.1 1999/07/01 04:01:47 rjmcnab
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40 | Initial revision.
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41 |
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42 |
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43 | */
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44 |
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45 |
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46 | #include "phrasequeryfilter.h"
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47 | #include "queryinfo.h"
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48 |
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49 | #include "phrasesearch.h"
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50 |
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51 |
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52 |
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53 | // do aditional query processing
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54 | void phrasequeryfilterclass::post_process (const queryparamclass &queryparams,
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55 | queryresultsclass &queryresults) {
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56 | bool results_shrunk = false;
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57 |
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58 | // post-process the results if needed
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59 | if (queryresults.orgterms.size() > 1 && !queryresults.docs.docset.empty()) {
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60 | // get the long version of the index
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61 | text_t longindex;
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62 | indexmap.to2from (queryparams.index, longindex);
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63 |
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64 | // process each of the matched documents
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65 | docresultmap::iterator docs_here = queryresults.docs.docset.begin();
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66 | docresultmap::iterator docs_end = queryresults.docs.docset.end();
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67 | while (docs_here != docs_end) {
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68 | if ((*docs_here).second.num_query_terms_matched == queryresults.orgterms.size() &&
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69 | OID_phrase_search (*mgsearchptr, *gdbmptr, queryparams.index,
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70 | queryparams.subcollection, queryparams.language,
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71 | longindex, queryparams.collection, queryresults.orgterms,
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72 | (*docs_here).second.docnum)) {
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73 | (*docs_here).second.num_phrase_match++;
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74 | docs_here++;
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75 |
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76 | } else {
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77 | docresultmap::iterator this_doc_here = docs_here;
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78 | docs_here++;
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79 | if (queryparams.match_mode == 1) {
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80 | // need to delete this element, there was no exact match
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81 | queryresults.docs.docset.erase(this_doc_here);
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82 | results_shrunk = true;
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83 | }
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84 | }
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85 | }
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86 | }
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87 |
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88 | if (results_shrunk) queryresults.docs_matched = queryresults.docs.docset.size();
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89 | }
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90 |
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91 |
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92 | void phrasequeryfilterclass::sort_doc_results (const FilterRequest_t &/*request*/,
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93 | docresultsclass &docs) {
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94 | resultsorderer_t resultsorderer;
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95 | resultsorderer.compare_phrase_match = true;
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96 | resultsorderer.compare_terms_match = true;
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97 | resultsorderer.compare_doc_weight = true;
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98 | resultsorderer.docset = &(docs.docset);
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99 |
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100 | // first get a list of document numbers
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101 | docs.docnum_order();
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102 |
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103 | sort (docs.docorder.begin(), docs.docorder.end(), resultsorderer);
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104 | }
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