1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 4 -*- */
4 * Copyright (C) 2000-2002 Ximian, Inc.
5 * Copyright (C) 2005 SUSE Linux Products GmbH
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License,
9 * version 2, as published by the Free Software Foundation.
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12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
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18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
22 #ifndef ZYPP_SOLVER_DETAIL_SAT_RESOLVER_H
23 #define ZYPP_SOLVER_DETAIL_SAT_RESOLVER_H
30 #include "zypp/base/ReferenceCounted.h"
31 #include "zypp/base/PtrTypes.h"
32 #include "zypp/ResPool.h"
33 #include "zypp/base/SerialNumber.h"
34 #include "zypp/ProblemTypes.h"
35 #include "zypp/ResolverProblem.h"
36 #include "zypp/ProblemSolution.h"
37 #include "zypp/Capability.h"
38 #include "zypp/solver/detail/SolverQueueItem.h"
40 #include "satsolver/solver.h"
41 #include "satsolver/pool.h"
45 /////////////////////////////////////////////////////////////////////////
47 { ///////////////////////////////////////////////////////////////////////
48 ///////////////////////////////////////////////////////////////////////
50 { /////////////////////////////////////////////////////////////////////
51 /////////////////////////////////////////////////////////////////////
53 { ///////////////////////////////////////////////////////////////////
56 ///////////////////////////////////////////////////////////////////
58 // CLASS NAME : SATResolver
60 class SATResolver : public base::ReferenceCounted, private base::NonCopyable {
68 // list populated by calls to addPoolItemTo*()
69 PoolItemList _items_to_install;
70 PoolItemList _items_to_remove;
71 PoolItemList _items_to_lock;
72 PoolItemList _items_to_keep;
75 PoolItemList _result_items_to_install;
76 PoolItemList _result_items_to_remove;
78 bool _fixsystem; // repair errors in rpm dependency graph
79 bool _allowdowngrade; // allow to downgrade installed solvable
80 bool _allowarchchange; // allow to change architecture of installed solvables
81 bool _allowvendorchange; // allow to change vendor of installed solvables
82 bool _allowuninstall; // allow removal of installed solvables
83 bool _updatesystem; // distupgrade
84 bool _allowvirtualconflicts; // false: conflicts on package name, true: conflicts on package provides
85 bool _noupdateprovide; // true: update packages needs not to provide old package
86 bool _dosplitprovides; // true: consider legacy split provides
87 bool _onlyRequires; // true: consider required packages only
88 bool _ignorealreadyrecommended; // true: ignore recommended packages that were already recommended by the installed packages
90 // ---------------------------------- methods
91 std::string SATprobleminfoString (Id problem, std::string &detail, Id &ignoreId);
92 void resetItemTransaction (PoolItem item);
94 // Create a SAT solver and reset solver selection in the pool (Collecting
95 void solverInit(const PoolItemList & weakItems,
96 const CapabilitySet & noObsoletesCapability,
97 const PoolItemSet & noObsoletesItem,
98 const ObsoleteStrings & noObsoletesString);
99 // common solver run with the _jobQueue; Save results back to pool
106 SATResolver (const ResPool & pool, Pool *SATPool);
107 virtual ~SATResolver();
109 // ---------------------------------- I/O
111 virtual std::ostream & dumpOn( std::ostream & str ) const;
112 friend std::ostream& operator<<(std::ostream& str, const SATResolver & obj)
113 { return obj.dumpOn (str); }
115 ResPool pool (void) const;
116 void setPool (const ResPool & pool) { _pool = pool; }
118 // solver run with pool selected items
119 bool resolvePool(const CapabilitySet & requires_caps,
120 const CapabilitySet & conflict_caps,
121 const PoolItemList & weakItems,
122 const CapabilitySet & noObsoletesCapability,
123 const PoolItemSet & noObsoletesItem,
124 const ObsoleteStrings & noObsoletesString
126 // solver run with the given request queue
127 bool resolveQueue(const SolverQueueItemList &requestQueue,
128 const PoolItemList & weakItems,
129 const CapabilitySet & noObsoletesCapability,
130 const PoolItemSet & noObsoletesItem,
131 const ObsoleteStrings & noObsoletesString
133 // searching for new packages
136 ResolverProblemList problems ();
137 void applySolutions (const ProblemSolutionList &solutions);
139 void addPoolItemToInstall (PoolItem item);
140 void addPoolItemsToInstallFromList (PoolItemList & rl);
142 void addPoolItemToLock (PoolItem item);
143 void addPoolItemToKeep (PoolItem item);
145 void addPoolItemToRemove (PoolItem item);
146 void addPoolItemsToRemoveFromList (PoolItemList & rl);
148 bool fixsystem () const {return _fixsystem;}
149 void setFixsystem ( const bool fixsystem) { _fixsystem = fixsystem;}
151 bool ignorealreadyrecommended () const {return _ignorealreadyrecommended;}
152 void setIgnorealreadyrecommended ( const bool ignorealreadyrecommended) { _ignorealreadyrecommended = ignorealreadyrecommended;}
154 bool allowdowngrade () const {return _allowdowngrade;}
155 void setAllowdowngrade ( const bool allowdowngrade) { _allowdowngrade = allowdowngrade;}
157 bool allowarchchange () const {return _allowarchchange;}
158 void setAllowarchchange ( const bool allowarchchange) { _allowarchchange = allowarchchange;}
160 bool allowvendorchange () const {return _allowvendorchange;}
161 void setAllowvendorchange ( const bool allowvendorchange) { _allowvendorchange = allowvendorchange;}
163 bool allowuninstall () const {return _allowuninstall;}
164 void setAllowuninstall ( const bool allowuninstall) { _allowuninstall = allowuninstall;}
166 bool updatesystem () const {return _updatesystem;}
167 void setUpdatesystem ( const bool updatesystem) { _updatesystem = updatesystem;}
169 bool allowvirtualconflicts () const {return _allowvirtualconflicts;}
170 void setAllowvirtualconflicts ( const bool allowvirtualconflicts) { _allowvirtualconflicts = allowvirtualconflicts;}
172 bool noupdateprovide () const {return _noupdateprovide;}
173 void setNoupdateprovide ( const bool noupdateprovide) { _noupdateprovide = noupdateprovide;}
175 bool dosplitprovides () const {return _dosplitprovides;}
176 void setDosplitprovides ( const bool dosplitprovides) { _dosplitprovides = dosplitprovides;}
178 bool onlyRequires () const {return _onlyRequires;}
179 void setOnlyRequires ( const bool onlyRequires) { _onlyRequires = onlyRequires;}
181 bool doesObsoleteItem (PoolItem candidate, PoolItem installed);
183 PoolItemList resultItemsToInstall () { return _result_items_to_install; }
184 PoolItemList resultItemsToRemove () { return _result_items_to_remove; }
188 ///////////////////////////////////////////////////////////////////
189 };// namespace detail
190 /////////////////////////////////////////////////////////////////////
191 /////////////////////////////////////////////////////////////////////
192 };// namespace solver
193 ///////////////////////////////////////////////////////////////////////
194 ///////////////////////////////////////////////////////////////////////
196 /////////////////////////////////////////////////////////////////////////
198 #endif // ZYPP_SOLVER_DETAIL_SAT_RESOLVER_H