QueueItemInstall.h

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00001 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 4 -*- */
00002 /* QueueItemInstall.h
00003  *
00004  * Copyright (C) 2000-2002 Ximian, Inc.
00005  * Copyright (C) 2005 SUSE Linux Products GmbH
00006  *
00007  * This program is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU General Public License,
00009  * version 2, as published by the Free Software Foundation.
00010  *
00011  * This program is distributed in the hope that it will be useful, but
00012  * WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  * General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU General Public License
00017  * along with this program; if not, write to the Free Software
00018  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00019  * 02111-1307, USA.
00020  */
00021 
00022 #ifndef ZYPP_SOLVER_DETAIL_QUEUEITEMINSTALL_H
00023 #define ZYPP_SOLVER_DETAIL_QUEUEITEMINSTALL_H
00024 
00025 #include <iosfwd>
00026 #include <list>
00027 #include <string>
00028 
00029 #include "zypp/solver/detail/Types.h"
00030 #include "zypp/solver/detail/QueueItem.h"
00031 #include "zypp/CapSet.h"
00032 
00034 namespace zypp
00035 { 
00036 
00037   namespace solver
00038   { 
00039 
00040     namespace detail
00041     { 
00042 
00044 //
00045 //      CLASS NAME : QueueItemInstall
00046 
00047 class QueueItemInstall : public QueueItem {
00048 
00049 
00050   private:
00051     PoolItem_Ref _item;                                 // the item to-be-installed
00052     bool _soft;                                         // if triggered by a soft requirement (a recommends)
00053     PoolItem_Ref _upgrades;                             // the item this install upgrades (if any)
00054     CapSet _deps_satisfied_by_this_install;
00055     PoolItemList _needed_by;
00056     int _channel_priority;
00057     int _other_penalty;
00058 
00059     bool _explicitly_requested;
00060 
00061   public:
00062 
00063     QueueItemInstall (const ResPool & pool, PoolItem_Ref item, bool soft = false);
00064     virtual ~QueueItemInstall();
00065 
00066     // ---------------------------------- I/O
00067 
00068     virtual std::ostream & dumpOn( std::ostream & str ) const;
00069 
00070     friend std::ostream& operator<<(std::ostream & str, const QueueItemInstall & obj)
00071     { return obj.dumpOn (str); }
00072 
00073     // ---------------------------------- accessors
00074 
00075     PoolItem_Ref item(void) const { return _item; }
00076 
00077     bool isSoft (void) const { return _soft; }
00078 
00079     PoolItem_Ref upgrades (void) const { return _upgrades; }
00080     void setUpgrades (PoolItem_Ref upgrades) { _upgrades = upgrades; }
00081 
00082     int channelPriority (void) const { return _channel_priority; }
00083     void setChannelPriority (int channel_priority) { _channel_priority = channel_priority; }
00084 
00085     int otherPenalty (void) { return _other_penalty; }
00086     void setOtherPenalty (int other_penalty) { _other_penalty = other_penalty; }
00087 
00088     void setExplicitlyRequested (void) { _explicitly_requested = true; }
00089 
00090     // ---------------------------------- methods
00091 
00092     virtual bool process (ResolverContext_Ptr context, QueueItemList & qil);
00093     virtual QueueItem_Ptr copy (void) const;
00094     virtual int cmp (QueueItem_constPtr item) const;
00095 
00096     virtual bool isRedundant (ResolverContext_Ptr context) const { return false; }
00097     virtual bool isSatisfied (ResolverContext_Ptr context) const;
00098 
00099     void addDependency (const Capability & capability);
00100     void addNeededBy (const PoolItem_Ref item);
00101 
00102 };
00103 
00105     };// namespace detail
00108   };// namespace solver
00111 };// namespace zypp
00113 
00114 #endif // ZYPP_SOLVER_DETAIL_QUEUEITEMINSTALL_H

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