Resolver.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* Resolver.h
 *
 * Copyright (C) 2000-2002 Ximian, Inc.
 * Copyright (C) 2005 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_RESOLVER_H
#define ZYPP_SOLVER_DETAIL_RESOLVER_H
#ifndef ZYPP_USE_RESOLVER_INTERNALS
#error Do not directly include this file!
#else
 
#include <iosfwd>
#include <string>
#include <list>
#include <map>
 
#include <zypp/solver/Types.h>
#include <zypp/base/SerialNumber.h>
 
namespace zypp
{
  namespace sat
  {
    class Transaction;
  }
  namespace solver
  {
    namespace detail
    {
      class SATResolver;
      typedef std::list<PoolItem> PoolItemList;
      typedef std::set<PoolItem> PoolItemSet;
 
//
//      CLASS NAME : Resolver
class Resolver : private base::NonCopyable
{
  typedef std::multimap<PoolItem,ItemCapKind> ItemCapKindMap;
  private:
    ResPool _pool;
    SATResolver *_satResolver;
    SerialNumberWatcher _poolchanged;
 
    CapabilitySet _extra_requires;
    CapabilitySet _extra_conflicts;
    std::set<Repository> _upgradeRepos;
 
    // Regard dependencies of the item weak onl
    PoolItemList _addWeak;
 
    bool _upgradeMode:1;              // Resolver has been called with doUpgrade
    bool _updateMode:1;               // Resolver has been called with doUpdate
    bool _verifying:1;                // The system will be checked
    bool _onlyRequires:1;             // do install required resolvables only
    bool _solveSrcPackages:1;         // whether to generate solver jobs for selected source packges.
    bool _cleandepsOnRemove:1;        // whether removing a package should also remove no longer needed requirements
    bool _ignoreAlreadyRecommended:1; // ignore recommended packages that have already been recommended by the installed packages
 
    bool _applyDefault_focus:1;
    bool _applyDefault_forceResolve:1;
    bool _applyDefault_cleandepsOnRemove:1;
    bool _applyDefault_onlyRequires:1;
    bool _applyDefault_allowDowngrade:1;
    bool _applyDefault_allowNameChange:1;
    bool _applyDefault_allowArchChange:1;
    bool _applyDefault_allowVendorChange:1;
    bool _applyDefault_dupAllowDowngrade:1;
    bool _applyDefault_dupAllowNameChange:1;
    bool _applyDefault_dupAllowArchChange:1;
    bool _applyDefault_dupAllowVendorChange:1;
 
    // Additional QueueItems which has to be regarded by the solver
    // This will be used e.g. by solution actions
    solver::detail::SolverQueueItemList _removed_queue_items;
    solver::detail::SolverQueueItemList _added_queue_items;
 
    // Additional information about the solverrun
    ItemCapKindMap _isInstalledBy;
    ItemCapKindMap _installs;
    ItemCapKindMap _satifiedByInstalled;
    ItemCapKindMap _installedSatisfied;
 
    // helpers
    void collectResolverInfo();
 
    // Unmaintained packages which does not fit to the updated system
    // (broken dependencies) will be deleted.
    // returns true if solving was successful
    bool checkUnmaintainedItems ();
 
    void solverInit();
 
  public:
 
    Resolver( const ResPool & pool );
    virtual ~Resolver();
 
    // ---------------------------------- I/O
 
    std::ostream & dumpOn( std::ostream & str ) const;
 
    friend std::ostream& operator<<( std::ostream& str, const Resolver & obj )
    { return obj.dumpOn (str); }
 
    // ---------------------------------- methods
 
    ResPool pool() const;
    void setPool( const ResPool & pool ) { _pool = pool; }
 
    void setDefaultSolverFlags( bool all_r );
 
    void addUpgradeRepo( Repository repo_r )            { if ( repo_r && ! repo_r.isSystemRepo() ) _upgradeRepos.insert( repo_r ); }
    bool upgradingRepo( Repository repo_r ) const       { return( _upgradeRepos.find( repo_r ) != _upgradeRepos.end() ); }
    void removeUpgradeRepo( Repository repo_r )         { _upgradeRepos.erase( repo_r ); }
    void removeUpgradeRepos()                           { _upgradeRepos.clear(); }
    const std::set<Repository> & upgradeRepos() const   { return _upgradeRepos; }
 
    void addExtraRequire( const Capability & capability );
    void removeExtraRequire( const Capability & capability );
    void addExtraConflict( const Capability & capability );
    void removeExtraConflict( const Capability & capability );
 
    void removeQueueItem( SolverQueueItem_Ptr item );
    void addQueueItem( SolverQueueItem_Ptr item );
 
    CapabilitySet extraRequires() const         { return _extra_requires; }
    CapabilitySet extraConflicts() const        { return _extra_conflicts; }
 
    void addWeak( const PoolItem & item );
 
    bool verifySystem();
    bool resolvePool();
    bool resolveQueue( SolverQueueItemList & queue );
    void doUpdate();
 
    bool doUpgrade();
    PoolItemList problematicUpdateItems() const;
 
    bool ignoreAlreadyRecommended() const       { return _ignoreAlreadyRecommended; }
    void setIgnoreAlreadyRecommended( bool yesno_r ) { _ignoreAlreadyRecommended = yesno_r; }
 
    bool isUpgradeMode() const                  { return _upgradeMode; }// Resolver has been called with doUpgrade
    void setUpgradeMode( bool yesno_r )         { _upgradeMode = yesno_r; }
 
    bool isUpdateMode() const                   { return _updateMode; } // Resolver has been called with doUpdate
    void setUpdateMode( bool yesno_r )          { _updateMode = yesno_r; }
 
    bool isVerifyingMode() const                { return _verifying; }  // The system will be checked
    void setVerifyingMode( TriBool state_r )    { _verifying = indeterminate(state_r) ? false : bool(state_r); }
 
    bool solveSrcPackages() const               { return _solveSrcPackages; }
    void setSolveSrcPackages( TriBool state_r ) { _solveSrcPackages = indeterminate(state_r) ? false : bool(state_r); }
 
    void setFocus( ResolverFocus focus_r );
    ResolverFocus focus() const;
 
#define ZOLV_FLAG_TRIBOOL( ZSETTER, ZGETTER )   \
    void ZSETTER( TriBool state_r );            \
    bool ZGETTER() const;                       \
 
    ZOLV_FLAG_TRIBOOL( setForceResolve          ,forceResolve         )
    ZOLV_FLAG_TRIBOOL( setCleandepsOnRemove     ,cleandepsOnRemove    )
    ZOLV_FLAG_TRIBOOL( setOnlyRequires          ,onlyRequires         )
    ZOLV_FLAG_TRIBOOL( setAllowDowngrade        ,allowDowngrade       )
    ZOLV_FLAG_TRIBOOL( setAllowNameChange       ,allowNameChange      )
    ZOLV_FLAG_TRIBOOL( setAllowArchChange       ,allowArchChange      )
    ZOLV_FLAG_TRIBOOL( setAllowVendorChange     ,allowVendorChange    )
    ZOLV_FLAG_TRIBOOL( dupSetAllowDowngrade     ,dupAllowDowngrade    )
    ZOLV_FLAG_TRIBOOL( dupSetAllowNameChange    ,dupAllowNameChange   )
    ZOLV_FLAG_TRIBOOL( dupSetAllowArchChange    ,dupAllowArchChange   )
    ZOLV_FLAG_TRIBOOL( dupSetAllowVendorChange  ,dupAllowVendorChange )
#undef ZOLV_FLAG_TRIBOOL
 
    ResolverProblemList problems() const;
 
    void applySolutions( const ProblemSolutionList & solutions );
    bool applySolution( const ProblemSolution & solution );
 
    // Return the Transaction computed by the last solver run.
    sat::Transaction getTransaction();
 
    // reset all SOLVER transaction in pool
    void undo();
 
    void reset( bool keepExtras = false );
 
    // Get more information about the solverrun
    // Which item will be installed by another item or triggers an item for
    // installation
    ItemCapKindList isInstalledBy( const PoolItem & item );
    ItemCapKindList installs( const PoolItem & item );
    ItemCapKindList satifiedByInstalled (const PoolItem & item );
    ItemCapKindList installedSatisfied( const PoolItem & item );
 
public:
    sat::detail::CSolver * get() const;
};
 
    };// namespace detail
  };// namespace solver
};// namespace zypp
#endif // ZYPP_USE_RESOLVER_INTERNALS
#endif // ZYPP_SOLVER_DETAIL_RESOLVER_H