classDependencyGraph_tpl.h

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 *       - Christophe GONZALES(_at_AMU)                                     *
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 *       - Pierre-Henri WUILLEMIN(_at_LIP6)                                 *
 *       - Christophe GONZALES(_at_AMU)                                     *
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#pragma once
 

#include <agrum/PRM/classDependencyGraph.h>
 
namespace gum {
  namespace prm {
 
    // Destructor.
    template < GUM_Numeric GUM_SCALAR >
    ClassDependencyGraph< GUM_SCALAR >::~ClassDependencyGraph() {
      GUM_DESTRUCTOR(ClassDependencyGraph);
 
      for (const auto& elt: _node_map_)
        delete elt.second;
 
      for (const auto& elt: _elt_map_)
        delete elt.second;
    }
 
    // Build the class dependency graph.
    template < GUM_Numeric GUM_SCALAR >
    void ClassDependencyGraph< GUM_SCALAR >::_buildGraph_(const PRM< GUM_SCALAR >& prm) {
      // First we add all nodes
      for (const auto ci: prm.classes()) {
        _node_map_.insert(ci, new HashTable< const PRMClassElement< GUM_SCALAR >*, NodeId >());
 
        for (const auto node: ci->containerDag().nodes())
          _addNode_(ci, ci->get(node));
      }
 
      for (const auto ii: prm.interfaces()) {
        _node_map_.insert(ii, new HashTable< const PRMClassElement< GUM_SCALAR >*, NodeId >());
 
        for (const auto node: ii->containerDag().nodes()) {
          _addNode_(ii, ii->get(node));
        }
      }
 
      // Then we add the arcs
      for (const auto cc: prm.classes())
        for (const auto node: cc->containerDag().nodes())
          _addArcs_(*cc, node, *(_node_map_[cc]));
    }
 
    // Add arcs in  _graph_.
    template < GUM_Numeric GUM_SCALAR >
    void ClassDependencyGraph< GUM_SCALAR >::_addArcs_(
        const PRMClassElementContainer< GUM_SCALAR >&              c,
        NodeId                                                     node,
        HashTable< const PRMClassElement< GUM_SCALAR >*, NodeId >& map) {
      switch (c.get(node).elt_type()) {
        case PRMClassElement< GUM_SCALAR >::prm_slotchain : {
          const PRMSlotChain< GUM_SCALAR >& sc
              = static_cast< const PRMSlotChain< GUM_SCALAR >& >(c.get(node));
 
          for (const auto chi: c.containerDag().children(node))
            _graph_.addArc((*(_node_map_[&(sc.end())]))[&(sc.end().get(sc.lastElt().safeName()))],
                           map[&(c.get(chi))]);
 
          break;
        }
 
        case PRMClassElement< GUM_SCALAR >::prm_aggregate :
        case PRMClassElement< GUM_SCALAR >::prm_attribute : {
          for (const auto chi: c.containerDag().children(node))
            _graph_.addArc(map[&(c.get(node))], map[&(c.get(chi))]);
 
          break;
        }
 
        default : { /* do nothing */ break;
        }
      }
    }
 
    template < GUM_Numeric GUM_SCALAR >
    ClassDependencyGraph< GUM_SCALAR >::ClassDependencyGraph(const PRM< GUM_SCALAR >& prm) {
      GUM_CONSTRUCTOR(ClassDependencyGraph);
      _buildGraph_(prm);
    }
 
    template < GUM_Numeric GUM_SCALAR >
    ClassDependencyGraph< GUM_SCALAR >::ClassDependencyGraph(
        const ClassDependencyGraph< GUM_SCALAR >& source) :
        _graph_(source._graph_), _modalitites_(source._modalitites_), _elt_map_(source._elt_map_) {
      GUM_CONS_CPY(ClassDependencyGraph);
 
      for (const auto& elt: source._node_map_) {
        _node_map_.insert(
            elt.first,
            new HashTable< const PRMClassElement< GUM_SCALAR >*, NodeId >(*elt.second));
      }
    }
 
    template < GUM_Numeric GUM_SCALAR >
    const DAG& ClassDependencyGraph< GUM_SCALAR >::internalDag() const {
      return _graph_;
    }
 
    template < GUM_Numeric GUM_SCALAR >
    const typename ClassDependencyGraph< GUM_SCALAR >::EltPair&
        ClassDependencyGraph< GUM_SCALAR >::get(NodeId id) const {
      return *(_elt_map_[id]);
    }
 
    template < GUM_Numeric GUM_SCALAR >
    NodeId ClassDependencyGraph< GUM_SCALAR >::get(const PRMClassElementContainer< GUM_SCALAR >& c,
                                                   const PRMClassElement< GUM_SCALAR >& elt) const {
      return (*(_node_map_[&c]))[&elt];
    }
 
    template < GUM_Numeric GUM_SCALAR >
    const NodeProperty< Size >& ClassDependencyGraph< GUM_SCALAR >::modalities() const {
      return _modalitites_;
    }
 
    template < GUM_Numeric GUM_SCALAR >
    void ClassDependencyGraph< GUM_SCALAR >::_addNode_(
        const PRMClassElementContainer< GUM_SCALAR >* c,
        const PRMClassElement< GUM_SCALAR >&          elt) {
      switch (elt.elt_type()) {
        case PRMClassElement< GUM_SCALAR >::prm_attribute :
        case PRMClassElement< GUM_SCALAR >::prm_aggregate : {
          NodeId id = _graph_.addNode();
          _elt_map_.insert(id, new ClassDependencyGraph< GUM_SCALAR >::EltPair(c, &elt));
          _node_map_[c]->insert(&elt, id);
          _modalitites_.insert(id, elt.type().variable().domainSize());
          break;
        }
 
        default : { /* do nothing */ break;
        }
      }
    }
 
  } /* namespace prm */
} /* namespace gum */