ROOT::Detail::RDF::RMergeableFill< T > Class Template Reference

template<typename T>
class ROOT::Detail::RDF::RMergeableFill< T >

Specialization of RMergeableValue for histograms and statistics.

This subclass is responsible for merging results coming from the following actions:

• Graph
• [Histo{1D,2D,3D}] (classROOT_1_1RDF_1_1RInterface.html::a247ca3aeb7ce5b95015b7fae72983055)
• HistoND
• HistoNSparseD
• [Profile{1D,2D}] (classROOT_1_1RDF_1_1RInterface.html::a8ef7dc16b0e9f7bc9cfbe2d9e5de0cef)
• Stats

Definition at line 254 of file RMergeableValue.hxx.

Public Member Functions
	RMergeableFill ()=default
	Default constructor.
	RMergeableFill (const RMergeableFill &)=delete
	RMergeableFill (const T &value)
	Constructor that initializes data members.
	RMergeableFill (RMergeableFill &&)=delete
const T &	GetValue () const
	Retrieve the result wrapped by this mergeable.
RMergeableFill &	operator= (const RMergeableFill &)=delete
RMergeableFill &	operator= (RMergeableFill &&)=delete

Protected Attributes
T	fValue

Private Member Functions
template<typename U>
auto	DoMerge (const RMergeableFill< U > &other, double) -> decltype(this->fValue.Merge(std::vector< U * >{}), void())
template<typename U, std::enable_if_t< std::is_base_of< TObject, U >::value, int > = 0>
auto	DoMerge (const RMergeableFill< U > &other, int) -> decltype(((U &) this->fValue).Merge((TCollection *) nullptr), void())
void	Merge (const RMergeableValue< T > &other) final
	Aggregate the information contained in another RMergeableValue into this.

#include <ROOT/RDF/RMergeableValue.hxx>

Inheritance diagram for ROOT::Detail::RDF::RMergeableFill< T >:

Constructor & Destructor Documentation

RMergeableFill() [1/4]

template<typename T>

ROOT::Detail::RDF::RMergeableFill< T >::RMergeableFill ( const T & value )

inline

Constructor that initializes data members.

Parameters

[in]

value

The action result.

Definition at line 305 of file RMergeableValue.hxx.

RMergeableFill() [2/4]

template<typename T>

ROOT::Detail::RDF::RMergeableFill< T >::RMergeableFill ( )

default

Default constructor.

Needed to allow serialization of ROOT objects. See [TBufferFile::WriteObjectClass] (classTBufferFile.html::a209078a4cb58373b627390790bf0c9c1)

RMergeableFill() [3/4]

template<typename T>

ROOT::Detail::RDF::RMergeableFill< T >::RMergeableFill ( const RMergeableFill< T > & )

delete

RMergeableFill() [4/4]

template<typename T>

ROOT::Detail::RDF::RMergeableFill< T >::RMergeableFill ( RMergeableFill< T > && )

delete

Member Function Documentation

DoMerge() [1/2]

template<typename T>

template<typename U>

auto ROOT::Detail::RDF::RMergeableFill< T >::DoMerge ( const RMergeableFill< U > & other, double  ) -> decltype(this->fValue.Merge(std::vector< U * >{}), void())

inlineprivate

Definition at line 270 of file RMergeableValue.hxx.

DoMerge() [2/2]

template<typename T>

template<typename U, std::enable_if_t< std::is_base_of< TObject, U >::value, int > = 0>

auto ROOT::Detail::RDF::RMergeableFill< T >::DoMerge ( const RMergeableFill< U > & other, int  ) -> decltype(((U &) this->fValue).Merge((TCollection *) nullptr), void())

inlineprivate

Definition at line 260 of file RMergeableValue.hxx.

GetValue()

template<typename T>

const T & ROOT::Detail::RDF::RMergeableValue< T >::GetValue ( ) const

inlineinherited

Retrieve the result wrapped by this mergeable.

Definition at line 185 of file RMergeableValue.hxx.

Merge()

template<typename T>

void ROOT::Detail::RDF::RMergeableFill< T >::Merge ( const RMergeableValue< T > & other )

inlinefinalprivatevirtual

Aggregate the information contained in another RMergeableValue into this.

Parameters

[in]

other

Another RMergeableValue object.

Exceptions

std::invalid_argument

If the cast of the other object to the same type as this one fails.

The other RMergeableValue object is cast to the same type as this object. This is needed to make sure that only results of the same type of action are merged together. The function then calls the right Merge method according to the class of the fValue data member.

Note

All the Merge methods in the RMergeableValue family are private. To merge multiple RMergeableValue objects please use [MergeValues] (namespaceROOT_1_1Detail_1_1RDF.html::af16fefbe2d120983123ddf8a1e137277).

Implements ROOT::Detail::RDF::RMergeableValue< T >.

Definition at line 291 of file RMergeableValue.hxx.

operator=() [1/2]

template<typename T>

RMergeableFill & ROOT::Detail::RDF::RMergeableFill< T >::operator= ( const RMergeableFill< T > & )

delete

operator=() [2/2]

template<typename T>

RMergeableFill & ROOT::Detail::RDF::RMergeableFill< T >::operator= ( RMergeableFill< T > && )

delete

Member Data Documentation

fValue

template<typename T>

T ROOT::Detail::RDF::RMergeableValue< T >::fValue

protectedinherited

Definition at line 164 of file RMergeableValue.hxx.

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

• tree/dataframe/inc/ROOT/RDF/RMergeableValue.hxx