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/** @file valuestats.h
* @brief Statistics about values.
*/
/* Copyright 2008 Lemur Consulting Ltd
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
* USA
*/
#ifndef XAPIAN_INCLUDED_VALUESTATS_H
#define XAPIAN_INCLUDED_VALUESTATS_H
#include <string>
#include "xapian/types.h"
/** Class to hold statistics for a given slot. */
struct ValueStats {
/** The number of documents which have a (non-empty) value stored in the
* slot.
*/
Xapian::doccount freq;
/** A lower bound on the values stored in the given value slot.
*/
std::string lower_bound;
/** An upper bound on the values stored in the given value slot.
*/
std::string upper_bound;
/// Construct an empty ValueStats object.
ValueStats() : freq(0), lower_bound(), upper_bound() {}
/** Clear the statistics.
*/
void clear() {
freq = 0;
lower_bound.resize(0);
upper_bound.resize(0);
}
};
#endif /* XAPIAN_INCLUDED_VALUESTATS_H */
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