| 1 | /**********************************************************************
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| 2 | *
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| 3 | * queryfilter.cpp -- base class for queryfilters
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| 4 | * Copyright (C) 1999 The New Zealand Digital Library Project
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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 | *********************************************************************/
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| 25 |
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| 26 | #include "queryfilter.h"
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| 27 | #include "fileutil.h"
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| 28 | #include "gsdltools.h"
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| 29 | #include <assert.h>
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| 30 |
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| 31 |
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| 32 | // translate will return true if successful
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| 33 | bool queryfilterclass::translate (gdbmclass *gdbmptr, int docnum, text_t &trans_OID) {
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| 34 | infodbclass info;
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| 35 |
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| 36 | trans_OID.clear();
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| 37 |
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| 38 | // get the info
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| 39 | if (gdbmptr == NULL) return false;
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| 40 | if (!gdbmptr->getinfo(docnum, info)) return false;
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| 41 |
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| 42 | // translate
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| 43 | if (info["section"].empty()) return false;
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| 44 |
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| 45 | trans_OID = info["section"];
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| 46 | return true;
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| 47 | }
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| 48 |
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| 49 |
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| 50 | // whether document results are needed
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| 51 | bool queryfilterclass::need_matching_docs (int filterResultOptions) {
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| 52 | return ((filterResultOptions & FROID) || (filterResultOptions & FRranking) ||
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| 53 | (filterResultOptions & FRmetadata));
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| 54 | }
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| 55 |
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| 56 | // whether term information is needed
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| 57 | bool queryfilterclass::need_term_info (int filterResultOptions) {
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| 58 | return ((filterResultOptions & FRtermFreq) || (filterResultOptions & FRmatchTerms));
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| 59 | }
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| 60 |
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| 61 | /////////////////////////////////
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| 62 | // functions for queryfilterclass
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| 63 | /////////////////////////////////
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| 64 |
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| 65 | // get the query parameters
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| 66 | void queryfilterclass::parse_query_params (const FilterRequest_t &request,
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| 67 | vector<queryparamclass> &query_params,
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| 68 | int &startresults, int &endresults,
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| 69 | text_t &phrasematch, ostream &logout) {
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| 70 | outconvertclass text_t2ascii;
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| 71 |
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| 72 | // set defaults for the return parameters
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| 73 | query_params.erase(query_params.begin(), query_params.end());
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| 74 | startresults = filterOptions["StartResults"].defaultValue.getint();
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| 75 | endresults = filterOptions["EndResults"].defaultValue.getint();
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| 76 | phrasematch = filterOptions["PhraseMatch"].defaultValue;
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| 77 |
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| 78 | // set defaults for query parameters
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| 79 | queryparamclass query;
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| 80 | query.combinequery = "or"; // first one must be "or"
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| 81 | query.collection = collection;
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| 82 | query.index = filterOptions["Index"].defaultValue;
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| 83 | query.subcollection = filterOptions["Subcollection"].defaultValue;
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| 84 | query.language = filterOptions["Language"].defaultValue;
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| 85 | query.querystring.clear();
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| 86 | query.search_type = (filterOptions["QueryType"].defaultValue == "ranked");
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| 87 | query.match_mode = (filterOptions["MatchMode"].defaultValue == "all");
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| 88 | query.casefolding = (filterOptions["Casefold"].defaultValue == "true");
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| 89 | query.stemming = (filterOptions["Stem"].defaultValue == "true");
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| 90 | query.accentfolding = (filterOptions["AccentFold"].defaultValue == "true");
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| 91 | query.maxdocs = filterOptions["Maxdocs"].defaultValue.getint();
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| 92 | query.level = filterOptions["Level"].defaultValue;
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| 93 | query.filterstring = filterOptions["FilterString"].defaultValue; // Lucene specific
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| 94 | query.sortfield = filterOptions["SortField"].defaultValue; // Lucene specific
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| 95 | query.fuzziness = filterOptions["Fuzziness"].defaultValue; // Lucene specific
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| 96 | query.maxnumeric = maxnumeric;
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| 97 | OptionValue_tarray::const_iterator options_here = request.filterOptions.begin();
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| 98 | OptionValue_tarray::const_iterator options_end = request.filterOptions.end();
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| 99 | while (options_here != options_end) {
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| 100 | if ((*options_here).name == "CombineQuery") {
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| 101 | // add this query
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| 102 |
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| 103 | // "all", needed when combining queries where the document results are needed
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| 104 | if (need_matching_docs (request.filterResultOptions)) query.maxdocs = -1;
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| 105 | query_params.push_back (query);
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| 106 |
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| 107 | // start on next query
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| 108 | query.clear();
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| 109 | query.combinequery = (*options_here).value;
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| 110 |
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| 111 | // set defaults for query parameters
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| 112 | query.collection = collection;
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| 113 | query.index = filterOptions["Index"].defaultValue;
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| 114 | query.subcollection = filterOptions["Subcollection"].defaultValue;
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| 115 | query.language = filterOptions["Language"].defaultValue;
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| 116 | query.querystring.clear();
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| 117 | query.search_type = (filterOptions["QueryType"].defaultValue == "ranked");
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| 118 | query.match_mode = (filterOptions["MatchMode"].defaultValue == "all");
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| 119 | query.casefolding = (filterOptions["Casefold"].defaultValue == "true");
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| 120 | query.stemming = (filterOptions["Stem"].defaultValue == "true");
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| 121 | query.accentfolding = (filterOptions["AccentFold"].defaultValue == "true");
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| 122 | query.level = filterOptions["Level"].defaultValue;
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| 123 | query.filterstring = filterOptions["FilterString"].defaultValue; // Lucene specific
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| 124 | query.sortfield = filterOptions["SortField"].defaultValue; // Lucene specific
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| 125 | query.fuzziness = filterOptions["Fuzziness"].defaultValue; // Lucene specific
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| 126 | query.maxnumeric = maxnumeric;
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| 127 | // "all", needed when combining queries where the document results are needed
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| 128 | if (need_matching_docs (request.filterResultOptions)) query.maxdocs = -1;
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| 129 | else query.maxdocs = filterOptions["Maxdocs"].defaultValue.getint();
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| 130 |
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| 131 | } else if ((*options_here).name == "StartResults") {
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| 132 | startresults = (*options_here).value.getint();
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| 133 | } else if ((*options_here).name == "EndResults") {
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| 134 | endresults = (*options_here).value.getint();
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| 135 | } else if ((*options_here).name == "QueryType") {
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| 136 | query.search_type = ((*options_here).value == "ranked");
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| 137 | } else if ((*options_here).name == "MatchMode") {
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| 138 | query.match_mode = ((*options_here).value == "all");
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| 139 | if (query.match_mode == 1) query.maxdocs = -1;
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| 140 | } else if ((*options_here).name == "Term") {
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| 141 | query.querystring = (*options_here).value;
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| 142 | } else if ((*options_here).name == "Casefold") {
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| 143 | query.casefolding = ((*options_here).value == "true");
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| 144 | } else if ((*options_here).name == "Stem") {
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| 145 | query.stemming = ((*options_here).value == "true");
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| 146 | } else if ((*options_here).name == "AccentFold") {
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| 147 | query.accentfolding = ((*options_here).value == "true");
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| 148 | } else if ((*options_here).name == "Index"&& (*options_here).value !="") {
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| 149 | query.index = (*options_here).value;
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| 150 | } else if ((*options_here).name == "Subcollection") {
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| 151 | query.subcollection = (*options_here).value;
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| 152 | } else if ((*options_here).name == "Language") {
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| 153 | query.language = (*options_here).value;
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| 154 | } else if ((*options_here).name == "Maxdocs") {
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| 155 | query.maxdocs = (*options_here).value.getint();
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| 156 | } else if ((*options_here).name == "PhraseMatch") {
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| 157 | phrasematch = (*options_here).value;
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| 158 | } else if ((*options_here).name == "Level") {
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| 159 | query.level = (*options_here).value;
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| 160 | } else if ((*options_here).name == "FilterString") {
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| 161 | query.filterstring = (*options_here).value;
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| 162 | } else if ((*options_here).name == "SortField") {
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| 163 | query.sortfield = (*options_here).value;
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| 164 | } else if ((*options_here).name == "Fuzziness") {
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| 165 | query.fuzziness = (*options_here).value;
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| 166 | } else {
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| 167 | logout << text_t2ascii
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| 168 | << "warning: unknown queryfilter option \""
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| 169 | << (*options_here).name
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| 170 | << "\" ignored.\n\n";
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| 171 | }
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| 172 |
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| 173 | ++options_here;
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| 174 | }
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| 175 |
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| 176 | // Store the start and end results in the query too, as lucene now needs to
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| 177 | // pass them through to the Java
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| 178 | query.startresults = startresults;
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| 179 | query.endresults = endresults;
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| 180 |
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| 181 | // add the last query
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| 182 | query_params.push_back (query);
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| 183 | }
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| 184 |
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| 185 |
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| 186 |
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| 187 |
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| 188 | queryfilterclass::queryfilterclass () {
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| 189 | gdbmptr = NULL;
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| 190 | textsearchptr = NULL;
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| 191 | maxnumeric = 4;
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| 192 |
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| 193 | FilterOption_t filtopt;
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| 194 | filtopt.name = "CombineQuery";
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| 195 | filtopt.type = FilterOption_t::enumeratedt;
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| 196 | filtopt.repeatable = FilterOption_t::onePerQuery;
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| 197 | filtopt.defaultValue = "and";
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| 198 | filtopt.validValues.push_back("and");
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| 199 | filtopt.validValues.push_back("or");
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| 200 | filtopt.validValues.push_back("not");
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| 201 | filterOptions["CombineQuery"] = filtopt;
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| 202 |
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| 203 | // -- onePerQuery StartResults integer
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| 204 | filtopt.clear();
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| 205 | filtopt.name = "StartResults";
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| 206 | filtopt.type = FilterOption_t::integert;
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| 207 | filtopt.repeatable = FilterOption_t::onePerQuery;
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| 208 | filtopt.defaultValue = "1";
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| 209 | filtopt.validValues.push_back("1");
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| 210 | filtopt.validValues.push_back("1000");
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| 211 | filterOptions["StartResults"] = filtopt;
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| 212 |
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| 213 | // -- onePerQuery EndResults integer
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| 214 | filtopt.clear();
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| 215 | filtopt.name = "EndResults";
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| 216 | filtopt.type = FilterOption_t::integert;
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| 217 | filtopt.repeatable = FilterOption_t::onePerQuery;
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| 218 | filtopt.defaultValue = "10";
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| 219 | filtopt.validValues.push_back("-1");
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| 220 | filtopt.validValues.push_back("1000");
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| 221 | filterOptions["EndResults"] = filtopt;
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| 222 |
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| 223 | // -- onePerQuery QueryType enumerated (boolean, ranked)
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| 224 | filtopt.clear();
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| 225 | filtopt.name = "QueryType";
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| 226 | filtopt.type = FilterOption_t::enumeratedt;
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| 227 | filtopt.repeatable = FilterOption_t::onePerQuery;
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| 228 | filtopt.defaultValue = "ranked";
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| 229 | filtopt.validValues.push_back("boolean");
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| 230 | filtopt.validValues.push_back("ranked");
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| 231 | filterOptions["QueryType"] = filtopt;
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| 232 |
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| 233 | // -- onePerQuery MatchMode enumerated (some, all)
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| 234 | filtopt.clear();
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| 235 | filtopt.name = "MatchMode";
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| 236 | filtopt.type = FilterOption_t::enumeratedt;
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| 237 | filtopt.repeatable = FilterOption_t::onePerQuery;
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| 238 | filtopt.defaultValue = "some";
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| 239 | filtopt.validValues.push_back("some");
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| 240 | filtopt.validValues.push_back("all");
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| 241 | filterOptions["MatchMode"] = filtopt;
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| 242 |
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| 243 | // -- onePerTerm Term string ???
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| 244 | filtopt.clear();
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| 245 | filtopt.name = "Term";
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| 246 | filtopt.type = FilterOption_t::stringt;
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| 247 | filtopt.repeatable = FilterOption_t::onePerTerm;
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| 248 | filtopt.defaultValue = "";
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| 249 | filterOptions["Term"] = filtopt;
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| 250 |
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| 251 | // -- onePerTerm Casefold boolean
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| 252 | filtopt.clear();
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| 253 | filtopt.name = "Casefold";
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| 254 | filtopt.type = FilterOption_t::booleant;
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| 255 | filtopt.repeatable = FilterOption_t::onePerTerm;
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| 256 | filtopt.defaultValue = "true";
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| 257 | filtopt.validValues.push_back("false");
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| 258 | filtopt.validValues.push_back("true");
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| 259 | filterOptions["Casefold"] = filtopt;
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| 260 |
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| 261 | // -- onePerTerm Stem boolean
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| 262 | filtopt.clear();
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| 263 | filtopt.name = "Stem";
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| 264 | filtopt.type = FilterOption_t::booleant;
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| 265 | filtopt.repeatable = FilterOption_t::onePerTerm;
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| 266 | filtopt.defaultValue = "false";
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| 267 | filtopt.validValues.push_back("false");
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| 268 | filtopt.validValues.push_back("true");
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| 269 | filterOptions["Stem"] = filtopt;
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| 270 |
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| 271 | // -- onePerTerm AccentFold boolean
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| 272 | filtopt.clear();
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| 273 | filtopt.name = "AccentFold";
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| 274 | filtopt.type = FilterOption_t::booleant;
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| 275 | filtopt.repeatable = FilterOption_t::onePerTerm;
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| 276 | filtopt.defaultValue = "false";
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| 277 | filtopt.validValues.push_back("false");
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| 278 | filtopt.validValues.push_back("true");
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| 279 | filterOptions["AccentFold"] = filtopt;
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| 280 |
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| 281 | // -- onePerTerm Index enumerated
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| 282 | filtopt.clear();
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| 283 | filtopt.name = "Index";
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| 284 | filtopt.type = FilterOption_t::enumeratedt;
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| 285 | filtopt.repeatable = FilterOption_t::onePerTerm;
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| 286 | filtopt.defaultValue = "";
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| 287 | filterOptions["Index"] = filtopt;
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| 288 |
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| 289 | // -- onePerTerm Subcollection enumerated
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| 290 | filtopt.clear();
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| 291 | filtopt.name = "Subcollection";
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| 292 | filtopt.type = FilterOption_t::enumeratedt;
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| 293 | filtopt.repeatable = FilterOption_t::onePerTerm;
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| 294 | filtopt.defaultValue = "";
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| 295 | filterOptions["Subcollection"] = filtopt;
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| 296 |
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| 297 | // -- onePerTerm Language enumerated
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| 298 | filtopt.clear();
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| 299 | filtopt.name = "Language";
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| 300 | filtopt.type = FilterOption_t::enumeratedt;
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| 301 | filtopt.repeatable = FilterOption_t::onePerTerm;
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| 302 | filtopt.defaultValue = "";
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| 303 | filterOptions["Language"] = filtopt;
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| 304 |
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| 305 | // -- onePerQuery Maxdocs integer
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| 306 | filtopt.clear();
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| 307 | filtopt.name = "Maxdocs";
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| 308 | filtopt.type = FilterOption_t::integert;
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| 309 | filtopt.repeatable = FilterOption_t::onePerQuery;
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| 310 | filtopt.defaultValue = "200";
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| 311 | filtopt.validValues.push_back("-1");
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| 312 | filtopt.validValues.push_back("1000");
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| 313 | filterOptions["Maxdocs"] = filtopt;
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| 314 |
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| 315 | // -- onePerQuery PhraseMatch enumerated
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| 316 | filtopt.clear();
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| 317 | filtopt.name = "PhraseMatch";
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| 318 | filtopt.type = FilterOption_t::enumeratedt;
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| 319 | filtopt.repeatable = FilterOption_t::onePerQuery;
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| 320 | filtopt.defaultValue = "some_phrases";
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| 321 | filtopt.validValues.push_back ("all_phrases");
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| 322 | filtopt.validValues.push_back ("some_phrases");
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| 323 | filtopt.validValues.push_back ("all_docs");
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| 324 | filterOptions["PhraseMatch"] = filtopt;
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| 325 | }
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| 326 |
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| 327 | queryfilterclass::~queryfilterclass () {
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| 328 | // don't delete gdbmptr or mgsearchptr here, they'll
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| 329 | // be cleaned up by mggdbmsource
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| 330 | }
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| 331 |
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| 332 | void queryfilterclass::configure (const text_t &key, const text_tarray &cfgline) {
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| 333 | filterclass::configure (key, cfgline);
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| 334 |
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| 335 | if (key == "indexmap") {
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| 336 | indexmap.importmap (cfgline);
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| 337 |
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| 338 | // update the list of indexes in the filter information
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| 339 | text_tarray options;
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| 340 | indexmap.gettoarray (options);
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| 341 | filterOptions["Index"].validValues = options;
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| 342 |
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| 343 | } else if (key == "defaultindex") {
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| 344 | indexmap.from2to (cfgline[0], filterOptions["Index"].defaultValue);
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| 345 |
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| 346 | } else if (key == "subcollectionmap") {
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| 347 | subcollectionmap.importmap (cfgline);
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| 348 |
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| 349 | // update the list of subcollections in the filter information
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| 350 | text_tarray options;
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| 351 | subcollectionmap.gettoarray (options);
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| 352 | filterOptions["Subcollection"].validValues = options;
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| 353 |
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| 354 | } else if (key == "defaultsubcollection") {
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| 355 | subcollectionmap.from2to (cfgline[0], filterOptions["Subcollection"].defaultValue);
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| 356 |
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| 357 | } else if (key == "languagemap") {
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| 358 | languagemap.importmap (cfgline);
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| 359 |
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| 360 | // update the list of languages in the filter information
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| 361 | text_tarray options;
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| 362 | languagemap.gettoarray (options);
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| 363 | filterOptions["Language"].validValues = options;
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| 364 |
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| 365 | } else if (key == "defaultlanguage") {
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| 366 | languagemap.from2to (cfgline[0], filterOptions["Language"].defaultValue);
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| 367 | } else if (key == "indexstem") {
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| 368 | indexstem = cfgline[0];
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| 369 | } else if (key == "maxnumeric") {
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| 370 | maxnumeric = cfgline[0].getint();
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| 371 | }
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| 372 |
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| 373 | }
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| 374 |
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| 375 | bool queryfilterclass::init (ostream &logout) {
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| 376 | outconvertclass text_t2ascii;
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| 377 |
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| 378 | if (!filterclass::init(logout)) return false;
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| 379 |
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| 380 | if (filterOptions["Index"].defaultValue.empty()) {
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| 381 | // use first index in map as default if no default is set explicitly
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| 382 | text_tarray fromarray;
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| 383 | indexmap.getfromarray(fromarray);
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| 384 | if (fromarray.size()) {
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| 385 | filterOptions["Index"].defaultValue = fromarray[0];
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| 386 | }
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| 387 | }
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| 388 |
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| 389 | if (filterOptions["Subcollection"].defaultValue.empty()) {
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| 390 | // use first subcollection in map as default if no default is set explicitly
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| 391 | text_tarray fromarray;
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| 392 | subcollectionmap.getfromarray(fromarray);
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| 393 | if (fromarray.size()) {
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| 394 | filterOptions["Subcollection"].defaultValue = fromarray[0];
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| 395 | }
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| 396 | }
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| 397 |
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| 398 | if (filterOptions["Language"].defaultValue.empty()) {
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| 399 | // use first language in map as default if no default is set explicitly
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| 400 | text_tarray fromarray;
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| 401 | languagemap.getfromarray(fromarray);
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| 402 | if (fromarray.size()) {
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| 403 | filterOptions["Language"].defaultValue = fromarray[0];
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| 404 | }
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| 405 | }
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| 406 |
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| 407 | // get the filename for the database and make sure it exists
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| 408 | if (indexstem.empty()) {
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| 409 | indexstem = collection;
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| 410 | }
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| 411 | gdbm_filename = filename_cat(gdbmhome, "collect", collection, "index", "text", indexstem);
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| 412 |
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| 413 | if (littleEndian()) gdbm_filename += ".ldb";
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| 414 | else gdbm_filename += ".bdb";
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| 415 |
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| 416 | if (!file_exists(gdbm_filename)) {
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| 417 | logout << text_t2ascii
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| 418 | << "warning: gdbm database \"" //****
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| 419 | << gdbm_filename << "\" does not exist\n\n";
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| 420 | //return false; //****
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| 421 | }
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| 422 |
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| 423 | return true;
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| 424 | }
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| 425 |
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