cudf::table_view Class Reference

A set of cudf::column_view's of the same size. More...

#include <cudf/table/table_view.hpp>

Inheritance diagram for cudf::table_view:

Public Types
using	ColumnView = column_view
	The type of column view the table contains.
Public Types inherited from cudf::detail::table_view_base< column_view >
using	iterator = decltype(std::begin(_columns))
	Iterator type for the table.
using	const_iterator = decltype(std::cbegin(_columns))
	const iterator type for the table

Public Member Functions
	table_view (std::vector< table_view > const &views)
	Construct a table from a vector of table views. More...
template<typename InputIterator >
table_view	select (InputIterator begin, InputIterator end) const
	Returns a table_view built from a range of column indices. More...
table_view	select (std::vector< size_type > const &column_indices) const
	Returns a table_view with set of specified columns. More...
Public Member Functions inherited from cudf::detail::table_view_base< column_view >
	table_view_base (std::vector< column_view > const &cols)
	Construct a table from a vector of column views. More...
	table_view_base (std::vector< column_view > const &cols, size_type num_rows)
	Construct a table from a vector of column views with an explicit row count. More...
	table_view_base (table_view_base const &)=default
	Copy constructor.
	table_view_base (table_view_base &&)=default
	Move constructor.
iterator	begin () noexcept
	Returns an iterator to the first view in the table. More...
const_iterator	begin () const noexcept
	Returns an iterator to the first view in the table. More...
iterator	end () noexcept
	Returns an iterator one past the last column view in the table. More...
const_iterator	end () const noexcept
	Returns an iterator one past the last column view in the table. More...
column_view const &	column (size_type column_index) const
	Returns a reference to the view of the specified column. More...
size_type	num_columns () const noexcept
	Returns the number of columns. More...
size_type	num_rows () const noexcept
	Returns the number of rows. More...
size_type	is_empty () const noexcept
	Returns true if num_columns() returns zero, or false otherwise. More...
table_view_base &	operator= (table_view_base const &)=default
	Copy assignment operator. More...
table_view_base &	operator= (table_view_base &&)=default
	Move assignment operator. More...

Detailed Description

A set of cudf::column_view's of the same size.

If the set of columns is empty, the view's row count may still be non-zero.

All public member functions and constructors are inherited from table_view_base<column_view>.

Definition at line 206 of file table_view.hpp.

Constructor & Destructor Documentation

table_view()

cudf::table_view::table_view

(

std::vector< table_view > const &

views

)

Construct a table from a vector of table views.

Note

Because a std::vector is constructible from a std::initializer_list, this constructor also supports the following usage:

table_view t0, t1, t2;
...
table_view t{{t0,t1,t2}}; // Creates a `table` from the columns of
t0, t1, t2

Exceptions

cudf::logic_error

If number of rows mismatch

Parameters

views

The vector of table views to construct the table from

Member Function Documentation

select() [1/2]

template<typename InputIterator >

table_view cudf::table_view::select ( InputIterator  begin, InputIterator  end  ) const

inline

Returns a table_view built from a range of column indices.

Exceptions

std::out_of_range

If any index is outside [0, num_columns())

Parameters

begin	Beginning of the range
end	Ending of the range

Returns

A table_view consisting of columns from the original table specified by the elements of column_indices

Definition at line 246 of file table_view.hpp.

select() [2/2]

table_view cudf::table_view::select

(

std::vector< size_type > const &

column_indices

)

const

Returns a table_view with set of specified columns.

Exceptions

std::out_of_range

If any element in column_indices is outside [0, num_columns())

Parameters

column_indices

Indices of columns in the table

Returns

A table_view consisting of columns from the original table specified by the elements of column_indices

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

• cudf/table/table_view.hpp