SolverQueueItemUpdate.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* QueueItem.h
 *
 * Copyright (C) 2008 SUSE Linux Products GmbH
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA
 * 02111-1307, USA.
 */
 
#ifndef ZYPP_SOLVER_DETAIL_QUEUEITEMUPDATE_H
#define ZYPP_SOLVER_DETAIL_QUEUEITEMUPDATE_H
 
#include <iosfwd>
#include <string>
 
#include <zypp/solver/detail/SolverQueueItem.h>
#include <zypp/PoolItem.h>
 
namespace zypp
{ 
  namespace solver
  { 
    namespace detail
    { 
 
//
//      CLASS NAME : SolverQueueItemUpdate
 
class SolverQueueItemUpdate : public SolverQueueItem {
    
  private:
 
    PoolItem _item;     // the item to-be-updated
    bool _soft;         // if triggered by a soft requirement (a recommends)
 
  public:
 
    SolverQueueItemUpdate (const ResPool & pool, const PoolItem & item, bool soft = false);
    virtual ~SolverQueueItemUpdate();
    
    // ---------------------------------- I/O
 
    virtual std::ostream & dumpOn( std::ostream & str ) const;
 
    friend std::ostream& operator<<(std::ostream & str, const SolverQueueItemUpdate & obj)
    { return obj.dumpOn (str); }
 
    // ---------------------------------- accessors
 
    bool isSoft (void) const { return _soft; }    
 
    // ---------------------------------- methods
    
    virtual bool addRule (sat::detail::CQueue & q);
    virtual SolverQueueItem_Ptr copy (void) const;
    virtual int cmp (SolverQueueItem_constPtr item) const;
};
 
    };// namespace detail
  };// namespace solver
};// namespace zypp
 
#endif // ZYPP_SOLVER_DETAIL_QUEUEITEMUPDATE_H