A single weighted relationship between two LCObjects. More...

#include <LCRelation.h>

Inheritance diagram for EVENT::LCRelation:

Public Types
typedef LCRelation	lcobject_type
	Useful typedef for template programming with LCIO. More...

Public Types inherited from lcrtrel::LCRTRelations
typedef std::type_index	ext_index

typedef std::shared_ptr< void >	ext_type

typedef std::map< ext_index, ext_type >	ext_map

Public Member Functions
virtual	~LCRelation ()
	Destructor. More...

virtual LCObject *	getFrom () const =0
	The 'from' object of the given relation. More...

virtual LCObject *	getTo () const =0
	The 'to' object of the given relation. More...

virtual float	getWeight () const =0
	The weight of the given relation - only if collection flag bit LCIO::LCREL_WEIGHTED is set. More...

Public Member Functions inherited from EVENT::LCObject
virtual	~LCObject ()
	Destructor. More...

virtual int	id () const =0
	Returns an object id for internal (debugging) use in LCIO. More...

virtual LCObject *	clone () const
	Returns an object id for internal (debugging) use in LCIO. More...

Public Member Functions inherited from lcrtrel::LCRTRelations
template<class V >
V::ext_type	ext ()
	Provides access to an extension object - the type and ownership is defined by the class V which should be a subtype of LCExtension, LCOwnedExtension, LCExtensionVector, LCExtensionList,... More...

template<class V >
const V::ext_type	ext () const
	Provides access to an extension object - the type and ownership is defined by the class V which should be a subtype of LCExtension, LCOwnedExtension, LCExtensionVector, LCExtensionList,... More...

template<class V >
V::rel_type	rel ()
	Provides read access to relations - the object types and their connectivity are defined by the class V which has to be a subtype of either LC1To1Relation, LC1ToNRelation or LCNToNRelation. More...

Detailed Description

A single weighted relationship between two LCObjects.

Stored in an LCCollection like any other LCObject. Use inplementations of LCRelationNavigator to navigate the relation efficiently. the types of the objects is decoded in the collection paramters 'RelationFromType' and 'RelationToType'. In order to store weights != 1. with the relation set the collection flag bit LCIO::LCREL_WEIGHTED, this is done automatically in UTIL::LCRelationNavigator if a weight != 1. exists.