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96 lines
2.7 KiB
C++
96 lines
2.7 KiB
C++
//
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// Cursor.cpp
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//
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// $Id$
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//
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// Library: MongoDB
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// Package: MongoDB
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// Module: Cursor
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//
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// Implementation of the Cursor class.
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//
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// Copyright (c) 2012, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#include "Poco/MongoDB/Cursor.h"
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#include "Poco/MongoDB/GetMoreRequest.h"
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#include "Poco/MongoDB/KillCursorsRequest.h"
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namespace Poco
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{
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namespace MongoDB
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{
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Cursor::Cursor(const std::string& db, const std::string& collection, QueryRequest::Flags flags)
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: _query(db + '.' + collection, flags)
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{
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}
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Cursor::Cursor(const std::string& fullCollectionName, QueryRequest::Flags flags)
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: _query(fullCollectionName, flags)
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{
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}
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Cursor::~Cursor()
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{
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poco_assert_dbg(!_response.cursorID());
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}
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ResponseMessage& Cursor::next(Connection& connection)
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{
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if ( _response.cursorID() == 0 )
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{
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connection.sendRequest(_query, _response);
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}
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else
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{
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Poco::MongoDB::GetMoreRequest getMore(_query.fullCollectionName(), _response.cursorID());
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getMore.setNumberToReturn(_query.getNumberToReturn());
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_response.clear();
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connection.sendRequest(getMore, _response);
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}
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return _response;
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}
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void Cursor::kill(Connection& connection)
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{
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if ( _response.cursorID() != 0 )
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{
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KillCursorsRequest killRequest;
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killRequest.cursors().push_back(_response.cursorID());
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connection.sendRequest(killRequest);
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}
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_response.clear();
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}
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} } // Namespace Poco::MongoDB
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