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4 * Copyright (C) 2000-2002 Ximian, Inc.
5 * Copyright (C) 2005 SUSE Linux Products GmbH
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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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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
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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 // common solver run with the _jobQueue; Save results back to pool
103 SATResolver (const ResPool & pool, Pool *SATPool);
104 virtual ~SATResolver();
106 // ---------------------------------- I/O
108 virtual std::ostream & dumpOn( std::ostream & str ) const;
109 friend std::ostream& operator<<(std::ostream& str, const SATResolver & obj)
110 { return obj.dumpOn (str); }
112 ResPool pool (void) const;
113 void setPool (const ResPool & pool) { _pool = pool; }
115 // solver run with pool selected items
116 bool resolvePool(const CapabilitySet & requires_caps,
117 const CapabilitySet & conflict_caps,
118 const PoolItemList & weakItems);
119 // solver run with the given request queue
120 bool resolveQueue(const SolverQueueItemList &requestQueue,
121 const PoolItemList & weakItems);
122 // searching for new packages
125 ResolverProblemList problems ();
126 void applySolutions (const ProblemSolutionList &solutions);
128 void addPoolItemToInstall (PoolItem item);
129 void addPoolItemsToInstallFromList (PoolItemList & rl);
131 void addPoolItemToLock (PoolItem item);
132 void addPoolItemToKeep (PoolItem item);
134 void addPoolItemToRemove (PoolItem item);
135 void addPoolItemsToRemoveFromList (PoolItemList & rl);
137 bool fixsystem () const {return _fixsystem;}
138 void setFixsystem ( const bool fixsystem) { _fixsystem = fixsystem;}
140 bool ignorealreadyrecommended () const {return _ignorealreadyrecommended;}
141 void setIgnorealreadyrecommended ( const bool ignorealreadyrecommended) { _ignorealreadyrecommended = ignorealreadyrecommended;}
143 bool allowdowngrade () const {return _allowdowngrade;}
144 void setAllowdowngrade ( const bool allowdowngrade) { _allowdowngrade = allowdowngrade;}
146 bool allowarchchange () const {return _allowarchchange;}
147 void setAllowarchchange ( const bool allowarchchange) { _allowarchchange = allowarchchange;}
149 bool allowvendorchange () const {return _allowvendorchange;}
150 void setAllowvendorchange ( const bool allowvendorchange) { _allowvendorchange = allowvendorchange;}
152 bool allowuninstall () const {return _allowuninstall;}
153 void setAllowuninstall ( const bool allowuninstall) { _allowuninstall = allowuninstall;}
155 bool updatesystem () const {return _updatesystem;}
156 void setUpdatesystem ( const bool updatesystem) { _updatesystem = updatesystem;}
158 bool allowvirtualconflicts () const {return _allowvirtualconflicts;}
159 void setAllowvirtualconflicts ( const bool allowvirtualconflicts) { _allowvirtualconflicts = allowvirtualconflicts;}
161 bool noupdateprovide () const {return _noupdateprovide;}
162 void setNoupdateprovide ( const bool noupdateprovide) { _noupdateprovide = noupdateprovide;}
164 bool dosplitprovides () const {return _dosplitprovides;}
165 void setDosplitprovides ( const bool dosplitprovides) { _dosplitprovides = dosplitprovides;}
167 bool onlyRequires () const {return _onlyRequires;}
168 void setOnlyRequires ( const bool onlyRequires) { _onlyRequires = onlyRequires;}
170 bool doesObsoleteItem (PoolItem candidate, PoolItem installed);
172 PoolItemList resultItemsToInstall () { return _result_items_to_install; }
173 PoolItemList resultItemsToRemove () { return _result_items_to_remove; }
177 ///////////////////////////////////////////////////////////////////
178 };// namespace detail
179 /////////////////////////////////////////////////////////////////////
180 /////////////////////////////////////////////////////////////////////
181 };// namespace solver
182 ///////////////////////////////////////////////////////////////////////
183 ///////////////////////////////////////////////////////////////////////
185 /////////////////////////////////////////////////////////////////////////
187 #endif // ZYPP_SOLVER_DETAIL_SAT_RESOLVER_H