00001 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 4 -*- */ 00002 /* Resolver.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_RESOLVER_H 00023 #define ZYPP_SOLVER_DETAIL_RESOLVER_H 00024 00025 #include <iosfwd> 00026 #include <list> 00027 #include <map> 00028 #include <string> 00029 00030 #include "zypp/base/ReferenceCounted.h" 00031 #include "zypp/base/PtrTypes.h" 00032 00033 #include "zypp/ResPool.h" 00034 #include "zypp/TriBool.h" 00035 #include "zypp/base/SerialNumber.h" 00036 00037 #include "zypp/solver/detail/Types.h" 00038 #include "zypp/solver/detail/SolverQueueItem.h" 00039 00040 #include "zypp/ProblemTypes.h" 00041 #include "zypp/ResolverProblem.h" 00042 #include "zypp/ProblemSolution.h" 00043 #include "zypp/Capabilities.h" 00044 #include "zypp/Capability.h" 00045 00046 00048 namespace zypp 00049 { 00050 00051 namespace solver 00052 { 00053 00054 namespace detail 00055 { 00056 00057 class SATResolver; 00058 00060 // 00061 // CLASS NAME : ItemCapKind 00062 // 00064 struct ItemCapKind 00065 { 00066 public: 00067 Capability cap; //Capability which has triggerd this selection 00068 Dep capKind; //Kind of that capability 00069 PoolItem item; //Item which has triggered this selection 00070 bool initialInstallation; //This item has triggered the installation 00071 //Not already fullfilled requierement only. 00072 00073 ItemCapKind() : capKind(Dep::PROVIDES) {} 00074 ItemCapKind( PoolItem i, Capability c, Dep k, bool initial) 00075 : cap( c ) 00076 , capKind( k ) 00077 , item( i ) 00078 , initialInstallation( initial ) 00079 { } 00080 }; 00081 typedef std::multimap<PoolItem,ItemCapKind> ItemCapKindMap; 00082 typedef std::list<ItemCapKind> ItemCapKindList; 00083 00084 00086 // 00087 // CLASS NAME : Resolver 00088 00089 class Resolver : public base::ReferenceCounted, private base::NonCopyable { 00090 00091 private: 00092 ResPool _pool; 00093 SATResolver *_satResolver; 00094 SerialNumberWatcher _poolchanged; 00095 00096 CapabilitySet _extra_requires; 00097 CapabilitySet _extra_conflicts; 00098 std::set<Repository> _upgradeRepos; 00099 00100 // Regard dependencies of the item weak onl 00101 PoolItemList _addWeak; 00102 00105 bool _forceResolve; // remove items which are conflicts with others or 00106 // have unfulfilled requirements. 00107 // This behaviour is favourited by ZMD 00108 bool _upgradeMode; // Resolver has been called with doUpgrade 00109 bool _updateMode; // Resolver has been called with doUpdate 00110 bool _verifying; // The system will be checked 00111 bool _onlyRequires; // do install required resolvables only 00112 // no recommended resolvables, language 00113 // packages, hardware packages (modalias) 00114 bool _allowVendorChange; // whether the solver should allow or disallow vendor changes. 00115 bool _solveSrcPackages; // whether to generate solver jobs for selected source packges. 00116 bool _cleandepsOnRemove; // whether removing a package should also remove no longer needed requirements 00117 00118 bool _ignoreAlreadyRecommended; //ignore recommended packages that have already been recommended by the installed packages 00120 00121 // Additional QueueItems which has to be regarded by the solver 00122 // This will be used e.g. by solution actions 00123 solver::detail::SolverQueueItemList _removed_queue_items; 00124 solver::detail::SolverQueueItemList _added_queue_items; 00125 00126 // Additional information about the solverrun 00127 ItemCapKindMap _isInstalledBy; 00128 ItemCapKindMap _installs; 00129 ItemCapKindMap _satifiedByInstalled; 00130 ItemCapKindMap _installedSatisfied; 00131 00132 // helpers 00133 void collectResolverInfo(); 00134 00135 // Unmaintained packages which does not fit to the updated system 00136 // (broken dependencies) will be deleted. 00137 // returns true if solving was successful 00138 bool checkUnmaintainedItems (); 00139 00140 void solverInit(); 00141 00142 public: 00143 00144 Resolver( const ResPool & pool ); 00145 virtual ~Resolver(); 00146 00147 // ---------------------------------- I/O 00148 00149 virtual std::ostream & dumpOn( std::ostream & str ) const; 00150 friend std::ostream& operator<<( std::ostream& str, const Resolver & obj ) 00151 { return obj.dumpOn (str); } 00152 00153 // ---------------------------------- methods 00154 00155 ResPool pool() const; 00156 void setPool( const ResPool & pool ) { _pool = pool; } 00157 00158 void addUpgradeRepo( Repository repo_r ) { if ( repo_r && ! repo_r.isSystemRepo() ) _upgradeRepos.insert( repo_r ); } 00159 bool upgradingRepo( Repository repo_r ) const { return( _upgradeRepos.find( repo_r ) != _upgradeRepos.end() ); } 00160 void removeUpgradeRepo( Repository repo_r ) { _upgradeRepos.erase( repo_r ); } 00161 void removeUpgradeRepos() { _upgradeRepos.clear(); } 00162 const std::set<Repository> & upgradeRepos() const { return _upgradeRepos; } 00163 00164 void addExtraRequire( const Capability & capability ); 00165 void removeExtraRequire( const Capability & capability ); 00166 void addExtraConflict( const Capability & capability ); 00167 void removeExtraConflict( const Capability & capability ); 00168 00169 void removeQueueItem( SolverQueueItem_Ptr item ); 00170 void addQueueItem( SolverQueueItem_Ptr item ); 00171 00172 CapabilitySet extraRequires() const { return _extra_requires; } 00173 CapabilitySet extraConflicts() const { return _extra_conflicts; } 00174 00175 void addWeak( const PoolItem & item ); 00176 00177 bool verifySystem(); 00178 bool resolvePool(); 00179 bool resolveQueue( SolverQueueItemList & queue ); 00180 void doUpdate(); 00181 00182 bool doUpgrade(); 00183 PoolItemList problematicUpdateItems() const; 00184 00187 bool ignoreAlreadyRecommended() const { return _ignoreAlreadyRecommended; } 00188 void setIgnoreAlreadyRecommended( bool yesno_r ) { _ignoreAlreadyRecommended = yesno_r; } 00189 00190 bool onlyRequires () const { return _onlyRequires; } 00191 void setOnlyRequires( TriBool state_r ); 00192 00193 bool forceResolve() const { return _forceResolve; } 00194 void setForceResolve( TriBool state_r ) { _forceResolve = indeterminate(state_r) ? false : bool(state_r); } 00195 00196 bool isUpgradeMode() const { return _upgradeMode; }// Resolver has been called with doUpgrade 00197 00198 bool isUpdateMode() const { return _updateMode; } // Resolver has been called with doUpdate 00199 00200 bool isVerifyingMode() const { return _verifying; } // The system will be checked 00201 void setVerifyingMode( TriBool state_r ) { _verifying = indeterminate(state_r) ? false : bool(state_r); } 00202 00203 bool allowVendorChange() const { return _allowVendorChange; } 00204 void setAllowVendorChange( TriBool state_r ); 00205 00206 bool solveSrcPackages() const { return _solveSrcPackages; } 00207 void setSolveSrcPackages( TriBool state_r ) { _solveSrcPackages = indeterminate(state_r) ? false : bool(state_r); } 00208 00209 bool cleandepsOnRemove() const { return _cleandepsOnRemove; } 00210 void setCleandepsOnRemove( TriBool state_r ); 00212 00213 ResolverProblemList problems() const; 00214 void applySolutions( const ProblemSolutionList & solutions ); 00215 00216 // reset all SOLVER transaction in pool 00217 void undo(); 00218 00219 void reset( bool keepExtras = false ); 00220 00221 // Get more information about the solverrun 00222 // Which item will be installed by another item or triggers an item for 00223 // installation 00224 ItemCapKindList isInstalledBy( const PoolItem & item ); 00225 ItemCapKindList installs( const PoolItem & item ); 00226 ItemCapKindList satifiedByInstalled (const PoolItem & item ); 00227 ItemCapKindList installedSatisfied( const PoolItem & item ); 00228 00229 }; 00230 00232 };// namespace detail 00235 };// namespace solver 00238 };// namespace zypp 00240 00241 #endif // ZYPP_SOLVER_DETAIL_RESOLVER_H