morph::table::RowsSnapshot< Row > Class Template Reference

A snapshot over a shared, immutable vector of typed rows. More...

#include <query.hpp>

Inheritance diagram for morph::table::RowsSnapshot< Row >:

Public Member Functions
	RowsSnapshot (std::shared_ptr< std::vector< Row > const > rows, RowKey< Row > key, std::shared_ptr< std::vector< detail::CellReader< Row > > const > readers)
	Wraps rows.
std::size_t	rowCount () const override
	The number of rows.
RowId	rowId (std::size_t row) const override
	A row's key.
Cell	cell (std::size_t row, std::size_t column) const override
	One cell.
void	readColumn (std::size_t column, ColumnSink &sink, std::size_t first, std::size_t last) const override
	Hands rows [first, last) of column to sink in runs.

Additional Inherited Members
Protected Member Functions inherited from morph::table::RowSnapshot
	RowSnapshot (RowSnapshot const &)=default
	Copies the base of a snapshot: a derived snapshot makes a changed copy of itself this way.
	RowSnapshot (RowSnapshot &&)=default
	Moves the base of a snapshot.
RowSnapshot &	operator= (RowSnapshot const &)=default
	Copy-assigns the base of a snapshot.
RowSnapshot &	operator= (RowSnapshot &&)=default
	Move-assigns the base of a snapshot.

Detailed Description

template<typename Row>
class morph::table::RowsSnapshot< Row >

A snapshot over a shared, immutable vector of typed rows.

Template Parameters

Row	A glaze-reflectable aggregate.

Definition at line 508 of file query.hpp.

Constructor & Destructor Documentation

RowsSnapshot()

template<typename Row>

morph::table::RowsSnapshot< Row >::RowsSnapshot ( std::shared_ptr< std::vector< Row > const > rows, RowKey< Row > key, std::shared_ptr< std::vector< detail::CellReader< Row > > const > readers )

inline

Wraps rows.

Parameters

rows	The rows; shared, never modified.
key	The key projection.
readers	One cell reader per column.

Definition at line 514 of file query.hpp.

Member Function Documentation

rowCount()

template<typename Row>

std::size_t morph::table::RowsSnapshot< Row >::rowCount ( ) const

inlinenodiscardoverridevirtual

The number of rows.

Returns

Row count.

Implements morph::table::RowSnapshot.

Definition at line 520 of file query.hpp.

rowId()

template<typename Row>

RowId morph::table::RowsSnapshot< Row >::rowId ( std::size_t row ) const

inlinenodiscardoverridevirtual

A row's key.

Parameters

row	Row index.

Returns

The key.

Implements morph::table::RowSnapshot.

Definition at line 525 of file query.hpp.

cell()

template<typename Row>

Cell morph::table::RowsSnapshot< Row >::cell ( std::size_t row, std::size_t column ) const

inlinenodiscardoverridevirtual

One cell.

Parameters

row	Row index.
column	Column index.

Returns

The cell.

Implements morph::table::RowSnapshot.

Definition at line 531 of file query.hpp.

readColumn()

template<typename Row>

void morph::table::RowsSnapshot< Row >::readColumn ( std::size_t column, ColumnSink & sink, std::size_t first, std::size_t last ) const

inlineoverridevirtual

Hands rows [first, last) of column to sink in runs.

Parameters

column	Column index.
sink	Receives the cells.
first	First row.
last	One past the last row.

Reimplemented from morph::table::RowSnapshot.

Definition at line 540 of file query.hpp.

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

• morph/table/query.hpp