Class to store a single element of a relation. More...

#include <RelationElement.h>

Inheritance diagram for RelationElement:

Public Types
typedef unsigned int	index_type
	type used for indices.

typedef float	weight_type
	type used for weights.

Public Member Functions
	RelationElement ()
	Empty constructor for ROOT.

	RelationElement (index_type from, index_type to, weight_type weight=1.0)
	Constructor for a 1:1 relation.

	RelationElement (index_type from, const std::vector< index_type > &to, const std::vector< weight_type > &weights)
	Constructor for a 1:n relation.

template<class InputIterator >
	RelationElement (index_type from, const InputIterator &begin, const InputIterator &end)
	Constructor for a 1:n relation.

index_type	getFromIndex () const
	Get index we point from.

size_t	getSize () const
	Get number of indices we points to.

std::pair< index_type, weight_type >	getTo (size_t n=0) const
	Get nth pair of index,weight we point to.

index_type	getToIndex (size_t n=0) const
	Get nth index we point to.

weight_type	getWeight (size_t n=0) const
	Get nth weight we point to.

const std::vector< index_type > &	getToIndices () const
	Get vector of indices we point to.

const std::vector< weight_type > &	getWeights () const
	Get vector of weights we point to.

void	setFromIndex (index_type from)
	Set index we point from.

void	setToIndex (index_type to, weight_type weight=1.0)
	Set index we point to, converts relation to 1:1 and discards all existing to-indices.

template<class InputIterator >
void	setToIndices (InputIterator begin, const InputIterator &end)
	Set new indices and weights we point to.

Protected Member Functions
	ClassDef (RelationElement, 1)
	Class to store a single element of a relation.

Protected Attributes
index_type	m_from
	index we point from.

std::vector< index_type >	m_to
	indices we point to.

std::vector< weight_type >	m_weights
	weights for to-indices.

Detailed Description

Class to store a single element of a relation.

Supports 1:n relations with individual weights.

Definition at line 25 of file RelationElement.h.

Member Typedef Documentation

◆ index_type

typedef unsigned int index_type

type used for indices.

Definition at line 29 of file RelationElement.h.

◆ weight_type

typedef float weight_type

type used for weights.

Definition at line 32 of file RelationElement.h.

Constructor & Destructor Documentation

◆ RelationElement() [1/4]

RelationElement ( )

Empty constructor for ROOT.

Definition at line 28 of file RelationElement.cc.

                                :
  TObject(), m_from(UINT_MAX), m_to(), m_weights()
{
 
}

◆ RelationElement() [2/4]

RelationElement	(	index_type	from,
		index_type	to,
		weight_type	weight = `1.0`
	)

inline

Constructor for a 1:1 relation.

Parameters

from	index to point from
to	index to point to
weight	weight of the relation

Definition at line 44 of file RelationElement.h.

44 :

45 TObject(), m_from(from), m_to(1, to), m_weights(1, weight) {}

◆ RelationElement() [3/4]

RelationElement	(	index_type	from,
		const std::vector< index_type > &	to,
		const std::vector< weight_type > &	weights
	)

Constructor for a 1:n relation.

Parameters

from	index to point from
to	indices to point to
weights	weights of the relation

Definition at line 18 of file RelationElement.cc.

                                                                                                                       :
  TObject(),
  m_from(from),
  m_to(to.begin(), to.end()),
  m_weights(weights.begin(), weights.end())
{
  if (to.size() != weights.size()) {
    B2FATAL("Index and weight vector sizes differ!");
  }
}

◆ RelationElement() [4/4]

RelationElement	(	index_type	from,
		const InputIterator &	begin,
		const InputIterator &	end
	)

inline

Constructor for a 1:n relation.

Parameters

from	index to point from
begin	iterator pointing to the begin of a sequence of std::pair<index_type,weight_type> or compatible
end	iterator pointing to the end of a sequence of std::pair<index_type,weight_type> or compatible

Definition at line 63 of file RelationElement.h.

                                                                                                                         :
      TObject(), m_from(from)
    {
      setToIndices(begin, end);
    }

Member Function Documentation

◆ getFromIndex()

index_type getFromIndex ( ) const

inline

Get index we point from.

Definition at line 70 of file RelationElement.h.

70{ return m_from; }

◆ getSize()

size_t getSize ( ) const

inline

Get number of indices we points to.

Definition at line 73 of file RelationElement.h.

73{ return m_to.size(); }

◆ getTo()

std::pair< index_type, weight_type > getTo ( size_t n = 0 ) const

inline

Get nth pair of index,weight we point to.

Definition at line 76 of file RelationElement.h.

76{ return std::make_pair(m_to[n], m_weights[n]); }

◆ getToIndex()

index_type getToIndex ( size_t n = 0 ) const

inline

Get nth index we point to.

Definition at line 79 of file RelationElement.h.

79{ return m_to[n]; }

◆ getToIndices()

const std::vector< index_type > & getToIndices ( ) const

inline

Get vector of indices we point to.

Definition at line 85 of file RelationElement.h.

85{ return m_to; }

◆ getWeight()

weight_type getWeight ( size_t n = 0 ) const

inline

Get nth weight we point to.

Definition at line 82 of file RelationElement.h.

82{ return m_weights[n]; }

◆ getWeights()

const std::vector< weight_type > & getWeights ( ) const

inline

Get vector of weights we point to.

Definition at line 88 of file RelationElement.h.

88{ return m_weights; }

◆ setFromIndex()

void setFromIndex ( index_type from )

inline

Set index we point from.

Definition at line 91 of file RelationElement.h.

91{ m_from = from; }

◆ setToIndex()

void setToIndex	(	index_type	to,
		weight_type	weight = `1.0`
	)

inline

Set index we point to, converts relation to 1:1 and discards all existing to-indices.

Definition at line 94 of file RelationElement.h.

    {
      m_to = std::vector<index_type>(1, to);
      m_weights = std::vector<weight_type>(1, weight);
    }

◆ setToIndices()

void setToIndices	(	InputIterator	begin,
		const InputIterator &	end
	)

inline

Set new indices and weights we point to.

Parameters

begin	iterator pointing to the begin of a sequence of std::pair<index_type,weight_type> or compatible
end	iterator pointing to the end of a sequence of std::pair<index_type,weight_type> or compatible

Definition at line 107 of file RelationElement.h.

    {
      for (; begin != end; ++begin) {
        m_to.push_back(begin->first);
        m_weights.push_back(begin->second);
      }
    }

Member Data Documentation

◆ m_from

index_type m_from

protected

index we point from.

Definition at line 118 of file RelationElement.h.

◆ m_to

std::vector<index_type> m_to

protected

indices we point to.

Definition at line 121 of file RelationElement.h.

◆ m_weights

std::vector<weight_type> m_weights

protected

weights for to-indices.

Definition at line 124 of file RelationElement.h.

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

framework/dataobjects/include/RelationElement.h
framework/dataobjects/src/RelationElement.cc

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Member Typedef Documentation

◆ index_type

◆ weight_type

Constructor & Destructor Documentation

◆ RelationElement() [1/4]

◆ RelationElement() [2/4]

◆ RelationElement() [3/4]

◆ RelationElement() [4/4]

Member Function Documentation

◆ getFromIndex()

◆ getSize()

◆ getTo()

◆ getToIndex()

◆ getToIndices()

◆ getWeight()

◆ getWeights()

◆ setFromIndex()

◆ setToIndex()

◆ setToIndices()

Member Data Documentation

◆ m_from

◆ m_to

◆ m_weights