dependencyManager.h

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/* -*- Mode:c++ -*- */
/*
 *  this is part of Spm
 *
 *  Copyright (c) 2008 Guillaume Chevallereau
 *
 *  This program is free software. You can redistribute it and/or modify it 
 *  under the terms of the GNU General Public License as published by the 
 *  Free Software Foundation. Either version 2 of the license or (at your 
 *  option) any later version.
 *
 *  This program is distributed in the hope that it will be usefull 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 __DEPENDENCY_MANAGER_H__
#define __DEPENDENCY_MANAGER_H__

#include <boost/shared_ptr.hpp>
#include <boost/utility.hpp>
#include "installedVersion.h"
#include "package.h"
#include "store.h"

namespace Spm
{
  namespace Core
  {
    class Dependency : public Util::Object
    {
      InstalledVersion * package_;
      std::vector<InstalledVersion *> packagesNeeded_;
    public:
      typedef std::vector<InstalledVersion *>::iterator iterator;
      typedef std::vector<InstalledVersion *>::const_iterator const_iterator;
      typedef std::vector<InstalledVersion *>::reverse_iterator reverse_iterator;
      typedef std::vector<InstalledVersion *>::const_reverse_iterator const_reverse_iterator;

      Dependency (InstalledVersion * package);
      void reference (InstalledVersion * package);
      void unReference (InstalledVersion * package);
      
      inline bool empty()
      {
        return packagesNeeded_.empty ();
      }
      
      inline size_t size ()
      {
        return packagesNeeded_.size ();
      }
      
      inline InstalledVersion * getDependentPackage ()
      {
        return package_;
      }
      
      inline const InstalledVersion * getDependentPackage () const
      {
        return package_;
      }
      
      inline std::vector<InstalledVersion *> & getNeededPackage ()
      {
        return packagesNeeded_;
      }
        
      bool dependOn (const InstalledVersion * package);
      bool dependOn (const miniXml::ustring & package,
                     const miniXml::ustring & version);

      inline iterator begin ()
      {
        return packagesNeeded_.begin ();
      }

      inline const_iterator begin () const
      {
        return packagesNeeded_.begin ();
      }

      inline reverse_iterator rbegin ()
      {
        return packagesNeeded_.rbegin ();
      }

      inline const_reverse_iterator rbegin () const
      {
        return packagesNeeded_.rbegin ();
      }

      inline iterator end ()
      {
        return packagesNeeded_.end ();
      }

      inline const_iterator end () const
      {
        return packagesNeeded_.end ();
      }

      inline reverse_iterator rend ()
      {
        return packagesNeeded_.rend ();
      }

      inline const_reverse_iterator rend () const
      {
        return packagesNeeded_.rend ();
      }
    };

    class DependencyManager : public boost::noncopyable
    {
    public:
      friend class PackageManager;
      friend class DependencyManagerStore;
      typedef std::vector<Dependency *>::iterator iterator;
      typedef std::vector<Dependency *>::reverse_iterator reverse_iterator;
      typedef std::vector<Dependency *>::const_iterator const_iterator;
      typedef std::vector<Dependency *>::const_reverse_iterator const_reverse_iterator;

      struct objectModified : public std::binary_function<Util::Object *,
                                                          miniXml::ustring,
                                                          void>
      {
        void operator () (Util::Object * object,
                          const miniXml::ustring & user) const;
      };
    private:
      static std::map<miniXml::ustring,
                      boost::shared_ptr<DependencyManager> > instances_;
      DependencyManagerStore * dependencyStore_;
      miniXml::ustring user_;
      DependencyManager (const miniXml::ustring & user);
      std::vector<Dependency *> dependencys_;

      void reference (InstalledVersion * installed,
                      InstalledVersion * depend);
      void unreference (InstalledVersion * installed,
                        InstalledVersion * depend);
      void remove (Versionned * v);
      void remove (Branch * v);
      void remove (Element * v);
    public:
      static boost::shared_ptr<DependencyManager> & create (const miniXml::ustring & user);
      ~DependencyManager ();
      bool isNeeded (const InstalledVersion * installed);
      std::vector<InstalledVersion *> & getDependency (const InstalledVersion * installed);
      std::vector<InstalledVersion *> neededBy (const InstalledVersion * installed);
      inline iterator begin ()
      {
        return dependencys_.begin ();
      }

      inline const_iterator begin () const
      {
        return dependencys_.begin ();
      }

      inline reverse_iterator rbegin ()
      {
        return dependencys_.rbegin ();
      }

      inline const_reverse_iterator rbegin () const
      {
        return dependencys_.rbegin ();
      }

      inline iterator end ()
      {
        return dependencys_.end ();
      }

      inline const_iterator end () const
      {
        return dependencys_.end ();
      }

      inline reverse_iterator rend ()
      {
        return dependencys_.rend ();
      }

      inline const_reverse_iterator rend () const
      {
        return dependencys_.rend ();
      }

      inline const miniXml::ustring & user ()
      {
        return user_;
      }
    };
  }
}

#endif

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