gum::ArcGraphPart Class Reference

Classes for directed edge sets. More...

#include <arcGraphPart.h>

Inheritance diagram for gum::ArcGraphPart:

Collaboration diagram for gum::ArcGraphPart:

Public Attributes
Signaler2< NodeId, NodeId >	onArcAdded
Signaler2< NodeId, NodeId >	onArcDeleted

Public Member Functions
Constructors / Destructors
	ArcGraphPart (Size arcs_size=HashTableConst::default_size, bool arcs_resize_policy=true)
	default constructor More...
	ArcGraphPart (const ArcGraphPart &s)
	copy constructor More...
virtual	~ArcGraphPart ()
	destructor More...
Operators
ArcGraphPart &	operator= (const ArcGraphPart &s)
	copy operator More...
bool	operator== (const ArcGraphPart &p) const
	tests whether two ArcGraphParts contain the same arcs More...
bool	operator!= (const ArcGraphPart &p) const
	tests whether two ArcGraphParts contain different arcs More...
Accessors/Modifiers
virtual void	addArc (NodeId tail, NodeId head)
	insert a new arc into the ArcGraphPart More...
virtual void	eraseArc (const Arc &arc)
	removes an arc from the ArcGraphPart More...
bool	existsArc (const Arc &arc) const
	indicates whether a given arc exists More...
bool	existsArc (NodeId tail, NodeId head) const
	indicates whether a given arc exists More...
bool	emptyArcs () const
	indicates wether the ArcGraphPart contains any arc More...
void	clearArcs ()
	removes all the arcs from the ArcGraphPart More...
Size	sizeArcs () const
	indicates the number of arcs stored within the ArcGraphPart More...
const ArcSet &	arcs () const
	returns the set of arcs stored within the ArcGraphPart More...
const NodeSet &	parents (NodeId id) const
	returns the set of nodes with arc ingoing to a given node More...
NodeSet	family (NodeId id) const
	returns the set of nodes which consists in the node and its parents More...
NodeSet	descendants (NodeId id) const
	returns the set of nodes with directed path outgoing from a given node More...
NodeSet	ancestors (NodeId id) const
	returns the set of nodes with directed path ingoing to a given node More...
NodeSet	children (const NodeSet &ids) const
	returns the set of children of a set of nodes More...
NodeSet	parents (const NodeSet &ids) const
	returns the set of parents of a set of nodes More...
NodeSet	family (const NodeSet &ids) const
	returns the set of family nodes of a set of nodes More...
const NodeSet &	children (NodeId id) const
	returns the set of nodes with arc outgoing from a given node More...
void	eraseParents (NodeId id)
	erase all the parents of a given node More...
void	unvirtualizedEraseParents (NodeId id)
	same function as eraseParents but without any virtual call to an erase More...
void	eraseChildren (NodeId id)
	removes all the children of a given node More...
void	unvirtualizedEraseChildren (NodeId id)
	same function as eraseChildren but without any virtual call to an erase More...
std::string	toString () const
	to friendly display the content of the ArcGraphPart More...
template<typename VAL >
ArcProperty< VAL >	arcsProperty (VAL(*f)(const Arc &), Size size=0) const
	a method to create a hashMap of VAL from a set of arcs (using for every arc, say x, the VAL f(x)) More...
template<typename VAL >
ArcProperty< VAL >	arcsProperty (const VAL &a, Size size=0) const
	a method to create a hashMap of VAL from a set of arcs (using for every arc, say x, the VAL a) More...
template<typename VAL >
List< VAL >	listMapArcs (VAL(*f)(const Arc &)) const
	a method to create a list of VAL from a set of arcs (using for every arc, say x, the VAL f(x)) More...
std::vector< NodeId >	directedPath (NodeId node1, NodeId node2) const
	returns a directed path from node1 to node2 belonging to the set of arcs More...
std::vector< NodeId >	directedUnorientedPath (NodeId node1, NodeId node2) const
	returns an unoriented (directed) path from node1 to node2 in the arc set More...

Public Types
typedef ArcSetIterator	ArcIterator

Protected Member Functions
void	eraseSetOfArcs_ (const ArcSet &set)
	a (virtualized) function to remove a given set of arcs More...
void	unvirtualizedEraseSetOfArcs_ (const ArcSet &set)
	similar to eraseSetOfArcs_ except that it is unvirtualized More...

Detailed Description

Classes for directed edge sets.

Author

Pierre-Henri WUILLEMIN() & Christophe GONZALES()

Usage example:

ArcGraphPart arcs1,arcs2,arcs3;

// insert elements into arcs1
arcs1.addArc( 2,3 );
arcs1.addArc( 5,3 );

// copy arcs1 into arcs2
arcs2=arcs1;

// remove some elements from arcs1
arcs1.eraseArc( Arc( 5,3 ) );
arcs1.eraseArc( arc );

if ( arcs1.empty() ) std::cerr<<" arcs1 is empty"<<std::endl;

// checks whether a given arc exists
if ( arcs2.existArc( arc ) )
  cerr << "set contains " << arc << endl;

if ( arcs2.existArc( 5,3 ) )
  cerr << "set contains " << arc << endl;

std::cerr<<arcs2.toString()<<std::endl;

std::cerr<<arcs2.parents( 3 )<<std::endl;

std::cerr<<arcs2.children( 2 )<<std::endl;

std::cerr<<std::endl<<std::endl;

std::cerr<<std::endl<<std::endl;

Definition at line 78 of file arcGraphPart.h.

Member Typedef Documentation

ArcIterator

typedef ArcSetIterator gum::ArcGraphPart::ArcIterator

Definition at line 80 of file arcGraphPart.h.

Constructor & Destructor Documentation

ArcGraphPart() [1/2]

gum::ArcGraphPart::ArcGraphPart ( Size  arcs_size = HashTableConst::default_size, bool  arcs_resize_policy = true  )

explicit

default constructor

Parameters

arcs_size	the size of the hash table used to store all the arcs
arcs_resize_policy	the resizing policy of this hash table

Definition at line 38 of file arcGraphPart.cpp.

References gum::Set< Key, Alloc >::emplace().

                                                                    :
      _arcs_(arcs_size, arcs_resize_policy) {
    GUM_CONSTRUCTOR(ArcGraphPart);
  }

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ArcGraphPart() [2/2]

gum::ArcGraphPart::ArcGraphPart

(

const ArcGraphPart &

s

)

copy constructor

Parameters

s	the ArcGraphPart to copy

Definition at line 43 of file arcGraphPart.cpp.

References gum::Set< Key, Alloc >::emplace().

                                                  : _arcs_(s._arcs_) {
    GUM_CONS_CPY(ArcGraphPart);

    // copy the sets of parents
    const NodeProperty< NodeSet* >& pars = s._parents_;
    _parents_.resize(pars.capacity());

    for (const auto& elt: pars) {
      NodeSet* newpar = new NodeSet(*elt.second);
      _parents_.insert(elt.first, newpar);
    }

    // copy the sets of children
    const NodeProperty< NodeSet* >& children = s._children_;
    _children_.resize(children.capacity());

    for (const auto& elt: children) {
      NodeSet* newchildren = new NodeSet(*elt.second);
      _children_.insert(elt.first, newchildren);
    }

    // send signals to indicate that there are new arcs
    if (onArcAdded.hasListener()) {
      for (const auto& arc: _arcs_) {
        GUM_EMIT2(onArcAdded, arc.tail(), arc.head());
      }
    }
  }

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~ArcGraphPart()

gum::ArcGraphPart::~ArcGraphPart ( )

virtual

destructor

Definition at line 72 of file arcGraphPart.cpp.

References gum::Set< Key, Alloc >::emplace().

                              {
    GUM_DESTRUCTOR(ArcGraphPart);
    // be sure to deallocate all the parents and children sets
    clearArcs();
  }

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Member Function Documentation

_checkChildren_()

INLINE void gum::ArcGraphPart::_checkChildren_ ( NodeId  id ) const

private

when the ArcGraphPart contains no arc outgoing from a given node, this function adds an empty set entry to children[id]

Parameters

id	the node whose children[id] is checked

Definition at line 50 of file arcGraphPart_inl.h.

References gum::Set< Key, Alloc >::emplace().

                                                           {
    if (!_children_.exists(id)) { _children_.insert(id, new NodeSet); }
  }

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_checkParents_()

INLINE void gum::ArcGraphPart::_checkParents_ ( NodeId  id ) const

private

when the ArcGraphPart contains no arc ingoing into a given node, this function adds an empty set entry to parents[id]

Parameters

id	the node whose parents[id] is checked

Definition at line 46 of file arcGraphPart_inl.h.

References gum::Set< Key, Alloc >::emplace().

                                                          {
    if (!_parents_.exists(id)) { _parents_.insert(id, new NodeSet); }
  }

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addArc()

INLINE void gum::ArcGraphPart::addArc ( NodeId  tail, NodeId  head  )

virtual

insert a new arc into the ArcGraphPart

Parameters

tail	the id of the tail of the new arc to be inserted
head	the id of the head of the new arc to be inserted

Warning

if the arc already exists, nothing is done. In particular, no exception is raised.

Reimplemented in gum::DiGraph, and gum::DAG.

Definition at line 94 of file arcGraphPart_inl.h.

References gum::Set< Key, Alloc >::emplace().

                                                           {
    Arc arc(tail, head);

    _arcs_.insert(arc);
    _checkParents_(head);
    _checkChildren_(tail);
    _parents_[head]->insert(tail);
    _children_[tail]->insert(head);

    GUM_EMIT2(onArcAdded, tail, head);
  }

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ancestors()

NodeSet gum::ArcGraphPart::ancestors

(

NodeId

id

)

const

returns the set of nodes with directed path ingoing to a given node

Note that the set of nodes returned may be empty if no path within the ArcGraphPart is ingoing to the given node.

Parameters

id	the node which is the head of a directed path with the returned nodes

Definition at line 172 of file arcGraphPart.cpp.

References gum::Set< Key, Alloc >::emplace().

                                                 {
    NodeSet res;
    NodeSet tmp;
    for (auto next: parents(id))
      tmp.insert(next);

    while (!tmp.empty()) {
      auto current = *(tmp.begin());
      tmp.erase(current);
      res.insert(current);
      for (auto next: parents(current)) {
        if (!tmp.contains(next) && !res.contains(next)) { tmp.insert(next); }
      }
    }
    return res;
  }

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arcs()

INLINE const ArcSet & gum::ArcGraphPart::arcs

(

)

const

returns the set of arcs stored within the ArcGraphPart

Definition at line 38 of file arcGraphPart_inl.h.

References gum::Set< Key, Alloc >::emplace().

{ return _arcs_; }

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arcsProperty() [1/2]

template<typename VAL >

ArcProperty< VAL > gum::ArcGraphPart::arcsProperty	(	VAL(*)(const Arc &)	f,
		Size	size = 0
	)		const

a method to create a hashMap of VAL from a set of arcs (using for every arc, say x, the VAL f(x))

Parameters

f	a function assigning a VAL to any arc
size	an optional parameter enabling to fine-tune the returned Property. Roughly speaking, it is a good practice to have a size equal to half the number of arcs. If you do not specify this parameter, the method will assign it for you.

arcsProperty() [2/2]

template<typename VAL >

ArcProperty< VAL > gum::ArcGraphPart::arcsProperty	(	const VAL &	a,
		Size	size = 0
	)		const

a method to create a hashMap of VAL from a set of arcs (using for every arc, say x, the VAL a)

Parameters

a	the default value assigned to each arc in the returned Property
size	an optional parameter enabling to fine-tune the returned Property. Roughly speaking, it is a good practice to have a size equal to half the number of arcs. If you do not specify this parameter, the method will assign it for you.

children() [1/2]

INLINE NodeSet gum::ArcGraphPart::children

(

const NodeSet &

ids

)

const

returns the set of children of a set of nodes

Definition at line 66 of file arcGraphPart_inl.h.

References gum::Set< Key, Alloc >::emplace().

                                                                {
    NodeSet res;
    for (const auto node: ids)
      res += children(node);
    return res;
  }

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children() [2/2]

INLINE const NodeSet & gum::ArcGraphPart::children

(

NodeId

id

)

const

returns the set of nodes with arc outgoing from a given node

Note that the set of arcs returned may be empty if no arc within the ArcGraphPart is outgoing from the given node.

Parameters

id	the node which is the tail of the arcs returned

Definition at line 89 of file arcGraphPart_inl.h.

References gum::Set< Key, Alloc >::emplace().

                                                              {
    _checkChildren_(id);
    return *(_children_[id]);
  }

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clearArcs()

void gum::ArcGraphPart::clearArcs

(

)

removes all the arcs from the ArcGraphPart

Definition at line 78 of file arcGraphPart.cpp.

References gum::Set< Key, Alloc >::emplace().

                               {
    for (const auto& elt: _parents_)
      delete elt.second;

    _parents_.clear();

    for (const auto& elt: _children_)
      delete elt.second;

    _children_.clear();

    // we need this copy only if at least one onArcDeleted listener exists
    if (onArcDeleted.hasListener()) {
      ArcSet tmp = _arcs_;
      _arcs_.clear();

      for (const auto& arc: tmp)
        GUM_EMIT2(onArcDeleted, arc.tail(), arc.head());
    } else {
      _arcs_.clear();
    }
  }

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descendants()

NodeSet gum::ArcGraphPart::descendants

(

NodeId

id

)

const

returns the set of nodes with directed path outgoing from a given node

Note that the set of nodes returned may be empty if no path within the ArcGraphPart is outgoing from the given node.

Parameters

id	the node which is the tail of a directed path with the returned nodes

Definition at line 154 of file arcGraphPart.cpp.

References gum::Set< Key, Alloc >::emplace().

                                                   {
    NodeSet res;
    NodeSet tmp;
    for (auto next: children(id))
      tmp.insert(next);

    while (!tmp.empty()) {
      auto current = *(tmp.begin());
      tmp.erase(current);
      res.insert(current);
      for (auto next: children(current)) {
        if (!tmp.contains(next) && !res.contains(next)) { tmp.insert(next); }
      }
    }
    return res;
  }

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directedPath()

std::vector< NodeId > gum::ArcGraphPart::directedPath	(	NodeId	node1,
		NodeId	node2
	)		const

returns a directed path from node1 to node2 belonging to the set of arcs

Parameters

node1	the id from which the path begins
node2	the id to which the path ends

Exceptions

NotFound

exception is raised if no path can be found between the two nodes

Definition at line 190 of file arcGraphPart.cpp.

References gum::Set< Key, Alloc >::emplace().

                                                                           {
    // not recursive version => use a FIFO for simulating the recursion
    List< NodeId > nodeFIFO;
    nodeFIFO.pushBack(n2);

    // mark[node] = successor if visited, else mark[node] does not exist
    NodeProperty< NodeId > mark;
    mark.insert(n2, n2);

    NodeId current;

    while (!nodeFIFO.empty()) {
      current = nodeFIFO.front();
      nodeFIFO.popFront();

      // check the parents

      for (const auto new_one: parents(current)) {
        if (mark.exists(new_one))   // if this node is already marked, do not
          continue;                 // check it again

        mark.insert(new_one, current);

        if (new_one == n1) {
          std::vector< NodeId > v;

          for (current = n1; current != n2; current = mark[current])
            v.push_back(current);

          v.push_back(n2);

          return v;
        }

        nodeFIFO.pushBack(new_one);
      }
    }

    GUM_ERROR(NotFound, "no path found")
  }

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directedUnorientedPath()

std::vector< NodeId > gum::ArcGraphPart::directedUnorientedPath	(	NodeId	node1,
		NodeId	node2
	)		const

returns an unoriented (directed) path from node1 to node2 in the arc set

Parameters

node1	the id from which the path begins
node2	the id to which the path ends

Exceptions

NotFound

exception is raised if no path can be found between the two nodes

Definition at line 231 of file arcGraphPart.cpp.

References gum::Set< Key, Alloc >::emplace().

                                                                                     {
    // not recursive version => use a FIFO for simulating the recursion
    List< NodeId > nodeFIFO;
    nodeFIFO.pushBack(n2);

    // mark[node] = successor if visited, else mark[node] does not exist
    NodeProperty< NodeId > mark;
    mark.insert(n2, n2);

    NodeId current;

    while (!nodeFIFO.empty()) {
      current = nodeFIFO.front();
      nodeFIFO.popFront();

      // check the parents
      for (const auto new_one: parents(current)) {
        if (mark.exists(new_one))   // the node has already been visited
          continue;

        mark.insert(new_one, current);

        if (new_one == n1) {
          std::vector< NodeId > v;

          for (current = n1; current != n2; current = mark[current])
            v.push_back(current);

          v.push_back(n2);

          return v;
        }

        nodeFIFO.pushBack(new_one);
      }

      // check the children
      for (const auto new_one: children(current)) {
        if (mark.exists(new_one))   // the node has already been visited
          continue;

        mark.insert(new_one, current);

        if (new_one == n1) {
          std::vector< NodeId > v;

          for (current = n1; current != n2; current = mark[current])
            v.push_back(current);

          v.push_back(n2);

          return v;
        }

        nodeFIFO.pushBack(new_one);
      }
    }

    GUM_ERROR(NotFound, "no path found")
  }

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emptyArcs()

INLINE bool gum::ArcGraphPart::emptyArcs

(

)

const

indicates wether the ArcGraphPart contains any arc

Definition at line 34 of file arcGraphPart_inl.h.

References gum::Set< Key, Alloc >::emplace().

{ return _arcs_.empty(); }

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eraseArc()

INLINE void gum::ArcGraphPart::eraseArc ( const Arc &  arc )

virtual

removes an arc from the ArcGraphPart

Parameters

arc	the arc to be removed

Warning

if the arc does not exist, nothing is done. In particular, no exception is thrown. However, the signal onArcDeleted is fired only if a node is effectively removed.

Definition at line 106 of file arcGraphPart_inl.h.

References gum::Set< Key, Alloc >::emplace().

                                                   {
    // ASSUMING tail and head exists in  _parents_ anf  _children_
    // (if not, it is an error)
    if (existsArc(arc)) {
      NodeId tail = arc.tail(), head = arc.head();
      _parents_[head]->erase(tail);
      _children_[tail]->erase(head);
      _arcs_.erase(arc);
      GUM_EMIT2(onArcDeleted, tail, head);
    }
  }

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eraseChildren()

INLINE void gum::ArcGraphPart::eraseChildren

(

NodeId

id

)

removes all the children of a given node

Parameters

id	the node all the children of which will be removed

Warning

although this method is not virtual, it calls method eraseArc( const Arc& arc ) and, as such, has a "virtual" behaviour. If you do not wish it to have this "virtual" behaviour, call instead method unvirtualizedEraseChildren

if no arc is a parent of id, nothing is done. In particular, no exception is thrown.

Definition at line 137 of file arcGraphPart_inl.h.

References gum::Set< Key, Alloc >::emplace().

                                                   {
    if (_children_.exists(id)) {
      NodeSet& children = *(_children_[id]);

      for (auto iter = children.beginSafe();   // safe iterator needed here
           iter != children.endSafe();
           ++iter) {
        // warning: use this erase so that you actually use the vritualized
        // arc removal function
        eraseArc(Arc(id, *iter));
      }
    }
  }

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eraseParents()

INLINE void gum::ArcGraphPart::eraseParents

(

NodeId

id

)

erase all the parents of a given node

Parameters

id	the node all the parents of which will be removed

Warning

although this method is not virtual, it calls method eraseArc( const Arc& arc ) and, as such, has a "virtual" behaviour. If you do not wish it to have this "virtual" behaviour, call instead method unvirtualizedEraseParents

if no arc is a parent of id, nothing is done. In particular, no exception is thrown.

Definition at line 123 of file arcGraphPart_inl.h.

References gum::Set< Key, Alloc >::emplace().

                                                  {
    if (_parents_.exists(id)) {
      NodeSet& parents = *(_parents_[id]);

      for (auto iter = parents.beginSafe();   // safe iterator needed here
           iter != parents.endSafe();
           ++iter) {
        // warning: use this erase so that you actually use the virtualized
        // arc removal function
        eraseArc(Arc(*iter, id));
      }
    }
  }

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eraseSetOfArcs_()

INLINE void gum::ArcGraphPart::eraseSetOfArcs_ ( const ArcSet &  set )

protected

a (virtualized) function to remove a given set of arcs

Warning

this function uses eraseArc, which is a virtual function. Hence the behaviour of this function is that of a virtual function

Definition at line 118 of file arcGraphPart_inl.h.

References gum::Set< Key, Alloc >::emplace().

                                                             {
    for (const auto& arc: set)
      eraseArc(arc);
  }

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existsArc() [1/2]

INLINE bool gum::ArcGraphPart::existsArc

(

const Arc &

arc

)

const

indicates whether a given arc exists

Parameters

arc	the arc we test whether or not it belongs to the ArcGraphPart

Definition at line 40 of file arcGraphPart_inl.h.

References gum::Set< Key, Alloc >::emplace().

{ return _arcs_.contains(arc); }

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existsArc() [2/2]

INLINE bool gum::ArcGraphPart::existsArc	(	NodeId	tail,
		NodeId	head
	)		const

indicates whether a given arc exists

Parameters

tail	the tail of the arc we test the existence in the ArcGraphPart
head	the head of the arc we test the existence in the ArcGraphPart

Definition at line 42 of file arcGraphPart_inl.h.

References gum::Set< Key, Alloc >::emplace().

                                                                    {
    return _parents_.exists(head) && _parents_[head]->exists(tail);
  }

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family() [1/2]

INLINE NodeSet gum::ArcGraphPart::family

(

NodeId

id

)

const

returns the set of nodes which consists in the node and its parents

Note that the set of nodes returned may be empty if no path within the ArcGraphPart is outgoing from the given node.

Parameters

id	the node which is the tail of a directed path with the returned nodes

Definition at line 59 of file arcGraphPart_inl.h.

References gum::Set< Key, Alloc >::emplace().

                                                     {
    _checkParents_(id);
    NodeSet res{id};
    return res + parents(id);
  }

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family() [2/2]

INLINE NodeSet gum::ArcGraphPart::family

(

const NodeSet &

ids

)

const

returns the set of family nodes of a set of nodes

Definition at line 82 of file arcGraphPart_inl.h.

References gum::Set< Key, Alloc >::emplace().

                                                              {
    NodeSet res;
    for (const auto node: ids)
      res += family(node);
    return res;
  }

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listMapArcs()

template<typename VAL >

List< VAL > gum::ArcGraphPart::listMapArcs

(

VAL(*)(const Arc &)

f

)

const

a method to create a list of VAL from a set of arcs (using for every arc, say x, the VAL f(x))

Parameters

f	a function assigning a VAL to any arc

operator!=()

INLINE bool gum::ArcGraphPart::operator!=

(

const ArcGraphPart &

p

)

const

tests whether two ArcGraphParts contain different arcs

Parameters

p	the ArcGraphPart that we compare with this

Definition at line 182 of file arcGraphPart_inl.h.

References gum::Set< Key, Alloc >::emplace().

{ return _arcs_ != p._arcs_; }

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operator=()

ArcGraphPart & gum::ArcGraphPart::operator=

(

const ArcGraphPart &

s

)

copy operator

Parameters

s	the ArcGraphPart to copy

Definition at line 101 of file arcGraphPart.cpp.

References gum::Set< Key, Alloc >::emplace().

                                                             {
    // avoid self assignment
    if (this != &s) {
      // copy the arcs
      clearArcs();
      _arcs_ = s._arcs_;

      // copy the sets of parents
      _parents_.resize(s._parents_.capacity());

      for (const auto& elt: s._parents_) {
        NodeSet* newpar = new NodeSet(*elt.second);
        _parents_.insert(elt.first, newpar);
      }

      // copy the sets of children
      _children_.resize(s._children_.capacity());

      for (const auto& elt: s._children_) {
        NodeSet* newchildren = new NodeSet(*elt.second);
        _children_.insert(elt.first, newchildren);
      }

      if (onArcAdded.hasListener()) {
        for (const auto& arc: _arcs_) {
          GUM_EMIT2(onArcAdded, arc.tail(), arc.head());
        }
      }
    }

    return *this;
  }

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operator==()

INLINE bool gum::ArcGraphPart::operator==

(

const ArcGraphPart &

p

)

const

tests whether two ArcGraphParts contain the same arcs

Parameters

p	the ArcGraphPart that we compare with this

Definition at line 180 of file arcGraphPart_inl.h.

References gum::Set< Key, Alloc >::emplace().

{ return _arcs_ == p._arcs_; }

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parents() [1/2]

INLINE const NodeSet & gum::ArcGraphPart::parents

(

NodeId

id

)

const

returns the set of nodes with arc ingoing to a given node

Note that the set of arcs returned may be empty if no arc within the ArcGraphPart is ingoing into the given node.

Parameters

id	the node toward which the arcs returned are pointing

Definition at line 54 of file arcGraphPart_inl.h.

References gum::Set< Key, Alloc >::emplace().

                                                             {
    _checkParents_(id);
    return *(_parents_[id]);
  }

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parents() [2/2]

INLINE NodeSet gum::ArcGraphPart::parents

(

const NodeSet &

ids

)

const

returns the set of parents of a set of nodes

Definition at line 74 of file arcGraphPart_inl.h.

References gum::Set< Key, Alloc >::emplace().

                                                               {
    NodeSet res;
    for (const auto node: ids)
      res += parents(node);
    return res;
  }

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sizeArcs()

INLINE Size gum::ArcGraphPart::sizeArcs

(

)

const

indicates the number of arcs stored within the ArcGraphPart

Definition at line 36 of file arcGraphPart_inl.h.

References gum::Set< Key, Alloc >::emplace().

{ return _arcs_.size(); }

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toString()

std::string gum::ArcGraphPart::toString

(

)

const

to friendly display the content of the ArcGraphPart

Definition at line 134 of file arcGraphPart.cpp.

References gum::Set< Key, Alloc >::emplace().

                                         {
    std::stringstream s;
    bool              first = true;
    s << "{";

    for (const auto& arc: _arcs_) {
      if (first) {
        first = false;
      } else {
        s << ",";
      }

      s << arc;
    }

    s << "}";

    return s.str();
  }

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unvirtualizedEraseChildren()

INLINE void gum::ArcGraphPart::unvirtualizedEraseChildren

(

NodeId

id

)

same function as eraseChildren but without any virtual call to an erase

Parameters

id	the node whose outgoing arcs will be removed

Definition at line 168 of file arcGraphPart_inl.h.

References gum::Set< Key, Alloc >::emplace().

                                                                {
    if (_children_.exists(id)) {
      NodeSet& children = *(_children_[id]);

      for (auto iter = children.beginSafe();   // safe iterator needed here
           iter != children.endSafe();
           ++iter) {
        ArcGraphPart::eraseArc(Arc(id, *iter));
      }
    }
  }

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unvirtualizedEraseParents()

INLINE void gum::ArcGraphPart::unvirtualizedEraseParents

(

NodeId

id

)

same function as eraseParents but without any virtual call to an erase

Parameters

id	the node whose ingoing arcs will be removed

Definition at line 156 of file arcGraphPart_inl.h.

References gum::Set< Key, Alloc >::emplace().

                                                               {
    if (_parents_.exists(id)) {
      NodeSet& parents = *(_parents_[id]);

      for (auto iter = parents.beginSafe();   // safe iterator needed here
           iter != parents.endSafe();
           ++iter) {
        ArcGraphPart::eraseArc(Arc(*iter, id));
      }
    }
  }

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unvirtualizedEraseSetOfArcs_()

INLINE void gum::ArcGraphPart::unvirtualizedEraseSetOfArcs_ ( const ArcSet &  set )

protected

similar to eraseSetOfArcs_ except that it is unvirtualized

Warning

this function uses ArcGraphPart::eraseArc, hence, as compared with eraseSetOfArcs_, it removes the arcs without calling a virtual eraseArc

Definition at line 151 of file arcGraphPart_inl.h.

References gum::Set< Key, Alloc >::emplace().

                                                                          {
    for (const auto& arc: set)
      ArcGraphPart::eraseArc(arc);
  }

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Member Data Documentation

_arcs_

Set< Arc > gum::ArcGraphPart::_arcs_

private

the set of all the arcs contained within the ArcGraphPart

Definition at line 301 of file arcGraphPart.h.

_children_

NodeProperty< NodeSet* > gum::ArcGraphPart::_children_

mutableprivate

for each arc, the set of its children

Definition at line 307 of file arcGraphPart.h.

_parents_

NodeProperty< NodeSet* > gum::ArcGraphPart::_parents_

mutableprivate

for each arc, the sets of its parents

Definition at line 304 of file arcGraphPart.h.

onArcAdded

Signaler2< NodeId, NodeId > gum::ArcGraphPart::onArcAdded

Definition at line 82 of file arcGraphPart.h.

onArcDeleted

Signaler2< NodeId, NodeId > gum::ArcGraphPart::onArcDeleted

Definition at line 83 of file arcGraphPart.h.

---

The documentation for this class was generated from the following files:

• agrum/tools/graphs/parts/arcGraphPart.h
• agrum/tools/graphs/parts/arcGraphPart.cpp
• agrum/tools/graphs/parts/arcGraphPart_inl.h