multiDimFunctionGraph.h

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 *       - Christophe GONZALES(_at_AMU)                                     *
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 *       - Pierre-Henri WUILLEMIN(_at_LIP6)                                 *
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#ifndef GUM_MULTI_DIM_FUNCTION_GRAPH_H
#define GUM_MULTI_DIM_FUNCTION_GRAPH_H
 
#include <agrum/base/core/types.h>
#include <agrum/base/multidim/implementations/multiDimFunctionGraphManager.h>
#include <agrum/base/multidim/implementations/multiDimImplementation.h>
#include <agrum/base/multidim/utils/FunctionGraphUtilities/terminalNodePolicies/ExactTerminalNodePolicy.h>
#include <agrum/FMDP/learning/core/templateStrategy.h>
 
namespace gum {
 
  template < typename GUM_ELEMENT, template < typename > class TerminalNodePolicy >
  class MultiDimFunctionGraphManager;
 
  template < typename GUM_ELEMENT, template < typename > class TerminalNodePolicy >
  class MultiDimFunctionGraphROManager;
 
  template < typename GUM_ELEMENT, template < typename > class TerminalNodePolicy >
  class MultiDimFunctionGraphTreeManager;

  template < typename GUM_ELEMENT,
             template < typename > class TerminalNodePolicy = ExactTerminalNodePolicy >
  class MultiDimFunctionGraph final:
      public MultiDimImplementation< GUM_ELEMENT >,
      public TerminalNodePolicy< GUM_ELEMENT > {
    public:
    const static GUM_ELEMENT defaultValue;
 
    public:
    // =========================================================================
    // =========================================================================
 
    private:
    MultiDimFunctionGraph(bool isReduced = true);
 
    public:
    MultiDimFunctionGraph(const MultiDimFunctionGraph< GUM_ELEMENT, TerminalNodePolicy >& from);

    MultiDimFunctionGraph< GUM_ELEMENT, TerminalNodePolicy >&
        operator=(const MultiDimFunctionGraph< GUM_ELEMENT, TerminalNodePolicy >& from);

    ~MultiDimFunctionGraph() override;

    // =========================================================================
    // =========================================================================

    void set(const Instantiation& i, const GUM_ELEMENT& value) const override;

    void fill(const GUM_ELEMENT& d) const override;

    void populate(const std::vector< GUM_ELEMENT >& v) const override;
    void populate(std::initializer_list< GUM_ELEMENT > v) const override;

    void copyFrom(const MultiDimContainer< GUM_ELEMENT >& src,
                  Instantiation*                          p_i = (Instantiation*)0) const override;

    void copy(const MultiDimContainer< GUM_ELEMENT >& src) override;

    // =========================================================================
    // =========================================================================
 
    [[nodiscard]] MultiDimContainer< GUM_ELEMENT >* newFactory() const override;
 
    GUM_ELEMENT get(const Instantiation& i) const override;
 
    const std::string& name() const override;
 
    void add(const DiscreteVariable& v) override;
 
    void erase(const DiscreteVariable& v) override;
 
    Size realSize() const override;
 
    void changeNotification(const Instantiation&          i,
                            const DiscreteVariable* const var,
                            Idx                           oldval,
                            Idx                           newval) override;
 
    void setFirstNotification(const Instantiation& i) override;
 
    void setLastNotification(const Instantiation& i) override;
 
    void setIncNotification(const Instantiation& i) override;
 
    void setDecNotification(const Instantiation& i) override;
 
    void setChangeNotification(const Instantiation& i) override;
 
    std::string toString(const Instantiation* i) const override;

    // =========================================================================
    // =========================================================================

    void copy(const MultiDimFunctionGraph< GUM_ELEMENT, TerminalNodePolicy >& src);

    void copyAndReassign(
        const MultiDimFunctionGraph< GUM_ELEMENT, TerminalNodePolicy >&      src,
        const Bijection< const DiscreteVariable*, const DiscreteVariable* >& reassign);

    void
        copyAndMultiplyByScalar(const MultiDimFunctionGraph< GUM_ELEMENT, TerminalNodePolicy >& src,
                                GUM_ELEMENT gamma);

    void clear();

    // =========================================================================
    // =========================================================================

    std::string toDot(bool withBackArcs = false) const;

    const NodeGraphPart& model() const;

    MultiDimFunctionGraphManager< GUM_ELEMENT, TerminalNodePolicy >* manager();

    const NodeId& root() const;

    bool isTerminalNode(const NodeId& node) const;

    bool isInternalNode(const NodeId& node) const;

    const GUM_ELEMENT& nodeValue(NodeId n) const;

    const InternalNode* node(NodeId n) const;

    const LinkedList< NodeId >* varNodeListe(const DiscreteVariable* var) const;

    const std::string& tableName() const;

    void setTableName(std::string_view name);

    bool isReducedAndOrdered() const;

    [[nodiscard]] static MultiDimFunctionGraph< GUM_ELEMENT, TerminalNodePolicy >*
        getReducedAndOrderedInstance();

    [[nodiscard]] static MultiDimFunctionGraph< GUM_ELEMENT, TerminalNodePolicy >*
        getTreeInstance();

 
    protected:
    void replace_(const DiscreteVariable* x, const DiscreteVariable* y) override;

    GUM_ELEMENT& get_(const Instantiation& inst) const override;
 
    private:
    std::string _name_;

    std::string _tableName_;

    NodeGraphPart _model_;

    MultiDimFunctionGraphManager< GUM_ELEMENT, TerminalNodePolicy >* _manager_;

    NodeId _root_;

    HashTable< NodeId, InternalNode* > _internalNodeMap_;

    HashTable< const DiscreteVariable*, LinkedList< NodeId >* > _var2NodeIdMap_;

    bool _isReduced_;
 
    friend class MultiDimFunctionGraphManager< GUM_ELEMENT, TerminalNodePolicy >;
  };
 
 
#ifndef GUM_NO_EXTERN_TEMPLATE_CLASS
#  ifndef GUM_NO_EXTERN_TEMPLATE_CLASS
  // extern template class MultiDimFunctionGraph<float>;
#  endif
#endif
#ifndef GUM_NO_EXTERN_TEMPLATE_CLASS
#  ifndef GUM_NO_EXTERN_TEMPLATE_CLASS
  // extern template class MultiDimFunctionGraph<double>;
#  endif
#endif
}   // namespace gum
 
#include <agrum/base/multidim/implementations/multiDimFunctionGraph_tpl.h>
 
#endif   // GUM_MULTI_DIM_FUNCTION_GRAPH_H