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/** @file documentvaluelist.h
* @brief Iteration over values in a document.
*/
/* Copyright (C) 2007,2008,2009,2011 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
*/
#ifndef XAPIAN_INCLUDED_DOCUMENTVALUELIST_H
#define XAPIAN_INCLUDED_DOCUMENTVALUELIST_H
#include "backends/valuelist.h"
#include "backends/document.h"
/// Iteration over values in a document.
class DocumentValueList : public ValueList {
/// Don't allow assignment.
void operator=(const DocumentValueList &);
/// Don't allow copying.
DocumentValueList(const DocumentValueList &);
/// Document internals we're iterating over.
Xapian::Internal::intrusive_ptr<const Xapian::Document::Internal> doc;
/** Iterator over the map inside @a doc.
*
* If we haven't started yet, this will be set to: doc->values.end()
*/
Xapian::Document::Internal::document_values::const_iterator it;
public:
explicit DocumentValueList(const Xapian::Internal::intrusive_ptr<Xapian::Document::Internal> & doc_)
: doc(doc_), it(doc->values.end()) { }
Xapian::docid get_docid() const;
std::string get_value() const;
Xapian::valueno get_valueno() const;
bool at_end() const;
void next();
/// The parameter is actually a Xapian::valueno for this subclass.
void skip_to(Xapian::docid slot);
std::string get_description() const;
};
#endif // XAPIAN_INCLUDED_DOCUMENTVALUELIST_H
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