aimsGraphR.h

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/* This software and supporting documentation are distributed by
 *     Institut Federatif de Recherche 49
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 *     91191 Gif-sur-Yvette cedex
 *     France
 *
 * This software is governed by the CeCILL-B license under
 * French law and abiding by the rules of distribution of free software.
 * You can  use, modify and/or redistribute the software under the
 * terms of the CeCILL-B license as circulated by CEA, CNRS
 * and INRIA at the following URL "http://www.cecill.info".
 *
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 * modify and redistribute granted by the license, users are provided only
 * with a limited warranty  and the software's author,  the holder of the
 * economic rights,  and the successive licensors  have only  limited
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 */

#ifndef AIMS_IO_AIMSGRAPHR_H
#define AIMS_IO_AIMSGRAPHR_H

#include <aims/io/process.h>
#include <aims/bucket/bucket.h>
#include <cartobase/object/attributed.h>
#include <set>

class Graph;

namespace aims
{

  namespace internal
  {
    struct AimsGraphReader_Private;
    struct AimsGraphReader_ElemStruct;
  }

  class AimsGraphReader : public Process
  {
  public:
    friend struct internal::AimsGraphReader_Private;

    struct Wrapper
    {
      friend class AimsGraphReader;

      virtual ~Wrapper() {}
      virtual void destroy() {}

      virtual std::string objectType() const = 0;
      virtual std::string dataType() const = 0;

    private:
      virtual Wrapper *extract( int index ) = 0;
    };

    template<typename T> struct ObjectWrapper : public Wrapper
    {
      ObjectWrapper( T* x ) : data( x ) {}
      virtual ~ObjectWrapper() {}
      virtual void destroy() { delete data; }

      virtual std::string objectType() const;
      virtual std::string dataType() const;

      T *data;

    private:
      virtual Wrapper *extract( int index );
    };

    struct ElementInfo
    {
      Graph                     *graph;
      carto::AttributedObject   *element;
      std::string               attribute;
      Wrapper                   *object;
    };

    class PostProcessor : public Process
    {
    public:
      friend class AimsGraphReader;
      PostProcessor();
      virtual ~PostProcessor();
      const ElementInfo & elementInfo() const { return( info ); }
      ElementInfo & elementInfo() { return( info ); }

    private:
      ElementInfo       info;
    };

    AimsGraphReader( const std::string & filename );
    virtual ~AimsGraphReader();

    virtual void readElements( Graph & g, int mask = 1 );
    void setReadFilter( const std::set<std::string> & toread );
    void setExcludeFilter( const std::set<std::string> & toexclude );
    void setInsertionFunction( const std::string & objType, 
                               const std::string & dataType, 
                               ProcFunc procFunc );
    template<class T> static 
    bool read( Process &, const std::string &, Finder & );

    static void loadAllMissingElements( Graph & );

  private:
    template<class T> static 
    bool defaultInsertFunction( Process &, const std::string &, Finder & );
    virtual void readElement( carto::AttributedObject* ao, 
                              internal::AimsGraphReader_ElemStruct & es );

    internal::AimsGraphReader_Private   *_priv;
  };

}


#endif