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/** @file documentvaluelist.cc
* @brief Iteration over values in a document.
*/
/* Copyright (C) 2008,2009,2011,2013 Olly Betts
*
* 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
*/
#include <config.h>
#include "documentvaluelist.h"
#include "backends/document.h"
#include "omassert.h"
#include "str.h"
#include "unicode/description_append.h"
#include "xapian/error.h"
using namespace std;
Xapian::docid
DocumentValueList::get_docid() const
{
throw Xapian::InvalidOperationError("get_docid() isn't valid when iterating over values in a document");
}
Xapian::valueno
DocumentValueList::get_valueno() const
{
Assert(!at_end());
return it->first;
}
string
DocumentValueList::get_value() const
{
Assert(!at_end());
return it->second;
}
bool
DocumentValueList::at_end() const
{
return it == doc->values.end();
}
void
DocumentValueList::next()
{
if (it == doc->values.end()) {
it = doc->values.begin();
} else {
++it;
}
}
void
DocumentValueList::skip_to(Xapian::docid slot)
{
it = doc->values.lower_bound(slot);
}
string
DocumentValueList::get_description() const
{
string desc = "DocumentValueList(";
if (!at_end()) {
desc += "slot=";
desc += str(get_valueno());
desc += ", value=\"";
description_append(desc, get_value());
desc += "\")";
} else {
desc += "atend)";
}
return desc;
}
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