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b90d852a2f
This will be mandatory as of Xapian 1.5. The API is also more consistent with the FieldProcessor API, which helps code re-use a bit. Note that this switches to using the built-in Xapian support for prefixes on ranges (i.e. deleted code at beginning of ParseTimeRangeProcessor::operator(), added prefix to constructor). Another side effect of the migration is that we are generating smaller queries, using one OP_VALUE_RANGE instead of an AND of two OP_VALUE_* queries.
86 lines
2.8 KiB
C++
86 lines
2.8 KiB
C++
/* parse-time-vrp.cc - date range query glue
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*
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* This file is part of notmuch.
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*
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* Copyright © 2012 Jani Nikula
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see https://www.gnu.org/licenses/ .
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*
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* Author: Jani Nikula <jani@nikula.org>
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*/
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#include "database-private.h"
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#include "parse-time-vrp.h"
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#include "parse-time-string.h"
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Xapian::Query
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ParseTimeRangeProcessor::operator() (const std::string &begin, const std::string &end)
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{
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double from = DBL_MIN, to = DBL_MAX;
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time_t parsed_time, now;
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std::string str;
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/* Use the same 'now' for begin and end. */
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if (time (&now) == (time_t) -1)
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throw Xapian::QueryParserError ("unable to get current time");
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if (!begin.empty ()) {
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if (parse_time_string (begin.c_str (), &parsed_time, &now, PARSE_TIME_ROUND_DOWN))
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throw Xapian::QueryParserError ("Didn't understand date specification '" + begin + "'");
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else
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from = (double) parsed_time;
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}
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if (!end.empty ()) {
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if (end == "!" && ! begin.empty ())
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str = begin;
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else
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str = end;
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if (parse_time_string (str.c_str (), &parsed_time, &now, PARSE_TIME_ROUND_UP_INCLUSIVE))
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throw Xapian::QueryParserError ("Didn't understand date specification '" + str + "'");
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else
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to = (double) parsed_time;
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}
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return Xapian::Query (Xapian::Query::OP_VALUE_RANGE, slot,
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Xapian::sortable_serialise (from),
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Xapian::sortable_serialise (to));
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}
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/* XXX TODO: is throwing an exception the right thing to do here? */
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Xapian::Query
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DateFieldProcessor::operator() (const std::string & str)
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{
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double from = DBL_MIN, to = DBL_MAX;
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time_t parsed_time, now;
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/* Use the same 'now' for begin and end. */
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if (time (&now) == (time_t) -1)
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throw Xapian::QueryParserError ("Unable to get current time");
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if (parse_time_string (str.c_str (), &parsed_time, &now, PARSE_TIME_ROUND_DOWN))
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throw Xapian::QueryParserError ("Didn't understand date specification '" + str + "'");
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else
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from = (double) parsed_time;
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if (parse_time_string (str.c_str (), &parsed_time, &now, PARSE_TIME_ROUND_UP_INCLUSIVE))
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throw Xapian::QueryParserError ("Didn't understand date specification '" + str + "'");
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else
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to = (double) parsed_time;
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return Xapian::Query (Xapian::Query::OP_VALUE_RANGE, slot,
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Xapian::sortable_serialise (from),
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Xapian::sortable_serialise (to));
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}
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