Acts::SpacePointColumnProxy< T, read_only > Class Template Reference

Additional column of data that can be added to the space point container. More...

#include <Acts/EventData/SpacePointColumnProxy2.hpp>

Inheritance diagram for Acts::SpacePointColumnProxy< T, read_only >:

Classes
class	Subset
	Subset view over selected column entries. More...

Public Types
using	Column = const_if_t<ReadOnly, std::vector<Value>>
	Type alias for column container type (const if read-only).
using	Container = const_if_t<ReadOnly, SpacePointContainer2>
	Type alias for container type (const if read-only).
using	Index = SpacePointIndex2
	Type alias for space point index type.
using	IndexRange = SpacePointIndexRange2
	Type alias for space point index range type.
using	IndexSubset = SpacePointIndexSubset2
	Type alias for space point index subset type.
using	Value = T
	Type alias for column value type.

Public Member Functions
	SpacePointColumnProxy (const SpacePointColumnProxy &other) noexcept=default
	Copy construct a space point column proxy.
	SpacePointColumnProxy (const SpacePointColumnProxy< T, false > &other) noexcept
	Copy construct a mutable space point column proxy.
	SpacePointColumnProxy (Container &container, Column &column)
	Constructs a space point column proxy for the given container and column.
SpacePointColumnProxy< T, true >	asConst () const noexcept
	Returns a const proxy of the space point column.
Value &	at (Index index)
	Returns a mutable reference to the column entry at the given index.
const Value &	at (Index index) const
	Returns a const reference to the column entry at the given index.
const std::vector< Value > &	column () const noexcept
	Returns a const reference to the column container.
const SpacePointContainer2 &	container () const noexcept
	Gets the container holding the space point.
SpacePointContainer2 &	container () noexcept
	Gets the container holding the space point.
std::span< const Value >	data () const noexcept
	Returns a const span to the column data.
std::span< Value >	data () noexcept
	Returns a mutable span to the column data.
const Value &	operator[] (Index index) const noexcept
	Returns a const reference to the column entry at the given index.
Value &	operator[] (Index index) noexcept
	Returns a mutable reference to the column entry at the given index.
std::uint32_t	size () const noexcept
	Returns the number of entries in the space point column.
Subset	subset (const IndexSubset &subset) const noexcept
	Creates a subset view of this space point column based on provided indices.

Static Public Attributes
static constexpr bool	ReadOnly = read_only
	Flag indicating whether this space point column proxy is read-only.

Detailed Description

template<typename T, bool read_only>
class Acts::SpacePointColumnProxy< T, read_only >

Additional column of data that can be added to the space point container.

The column is indexed by the space point index.

Constructor & Destructor Documentation

SpacePointColumnProxy() [1/3]

template<typename T, bool read_only>

Acts::SpacePointColumnProxy< T, read_only >::SpacePointColumnProxy	(	Container &	container,
		Column &	column )

Constructs a space point column proxy for the given container and column.

Parameters

container	The container holding the space point.
column	The column of data to access.

SpacePointColumnProxy() [2/3]

template<typename T, bool read_only>

Acts::SpacePointColumnProxy< T, read_only >::SpacePointColumnProxy ( const SpacePointColumnProxy< T, read_only > & other )

defaultnoexcept

Copy construct a space point column proxy.

Parameters

other

The space point column proxy to copy.

SpacePointColumnProxy() [3/3]

template<typename T, bool read_only>

Acts::SpacePointColumnProxy< T, read_only >::SpacePointColumnProxy ( const SpacePointColumnProxy< T, false > & other )

explicitnoexcept

Copy construct a mutable space point column proxy.

Parameters

other

The mutable space point column proxy to copy.

Member Function Documentation

asConst()

template<typename T, bool read_only>

SpacePointColumnProxy< T, true > Acts::SpacePointColumnProxy< T, read_only >::asConst ( ) const

noexcept

Returns a const proxy of the space point column.

Returns

A const proxy of the space point column.

at() [1/2]

template<typename T, bool read_only>

Value & Acts::SpacePointColumnProxy< T, read_only >::at

(

Index

index

)

Returns a mutable reference to the column entry at the given index.

If the index is out of range, an exception is thrown.

Parameters

index

The index of the space point to access.

Returns

A mutable reference to the column entry at the given index.

Exceptions

std::out_of_range

if the index is out of range.

at() [2/2]

template<typename T, bool read_only>

const Value & Acts::SpacePointColumnProxy< T, read_only >::at

(

Index

index

)

const

Returns a const reference to the column entry at the given index.

If the index is out of range, an exception is thrown.

Parameters

index

The index of the space point to access.

Returns

A const reference to the column entry at the given index.

Exceptions

std::out_of_range

if the index is out of range.

column()

template<typename T, bool read_only>

const std::vector< Value > & Acts::SpacePointColumnProxy< T, read_only >::column ( ) const

noexcept

Returns a const reference to the column container.

Returns

A const reference to the column container.

container() [1/2]

template<typename T, bool read_only>

const SpacePointContainer2 & Acts::SpacePointColumnProxy< T, read_only >::container ( ) const

noexcept

Gets the container holding the space point.

Returns

A const reference to the container holding the space point.

container() [2/2]

template<typename T, bool read_only>

SpacePointContainer2 & Acts::SpacePointColumnProxy< T, read_only >::container ( )

noexcept

Gets the container holding the space point.

Returns

A reference to the container holding the space point.

data() [1/2]

template<typename T, bool read_only>

std::span< const Value > Acts::SpacePointColumnProxy< T, read_only >::data ( ) const

noexcept

Returns a const span to the column data.

Returns

A const span to the column data.

data() [2/2]

template<typename T, bool read_only>

std::span< Value > Acts::SpacePointColumnProxy< T, read_only >::data ( )

noexcept

Returns a mutable span to the column data.

Returns

A mutable span to the column data.

operator[]() [1/2]

template<typename T, bool read_only>

const Value & Acts::SpacePointColumnProxy< T, read_only >::operator[] ( Index index ) const

noexcept

Returns a const reference to the column entry at the given index.

Parameters

index

The index of the space point to access.

Returns

A const reference to the column entry at the given index.

operator[]() [2/2]

template<typename T, bool read_only>

Value & Acts::SpacePointColumnProxy< T, read_only >::operator[] ( Index index )

noexcept

Returns a mutable reference to the column entry at the given index.

Parameters

index

The index of the space point to access.

Returns

A mutable reference to the column entry at the given index.

size()

template<typename T, bool read_only>

std::uint32_t Acts::SpacePointColumnProxy< T, read_only >::size ( ) const

noexcept

Returns the number of entries in the space point column.

Returns

The size of the space point column.

subset()

template<typename T, bool read_only>

Subset Acts::SpacePointColumnProxy< T, read_only >::subset ( const IndexSubset & subset ) const

noexcept

Creates a subset view of this space point column based on provided indices.

This method creates a subset proxy that provides access to only the space points at the indices specified in the IndexSubset. The subset maintains a reference to the original column data without copying, enabling efficient access to selected space points for filtering, clustering, or other operations.

Parameters

subset

The index subset specifying which space points to include

Returns

A subset proxy providing access to the selected space points

Note

The returned subset shares data with the original column

The subset remains valid only as long as the original column exists

This operation does not copy data, providing efficient subset access