A non-owning view of a single column's metadata within packed column data. More...

#include <contiguous_split.hpp>

Public Member Functions
data_type	type () const

size_type	num_rows () const

size_type	null_count () const

size_type	num_children () const

column_view	child (size_type i) const
	A view of the i-th child column's metadata. More...

Friends
class	packed_metadata_view

Detailed Description

A non-owning view of a single column's metadata within packed column data.

This lightweight view (two pointers) wraps a single serialized column entry and provides access to its schema information (type, size, null count, children) without requiring device data or building a column_view.

Instances are obtained from packed_metadata_view::column() or packed_column_metadata::child(). They remain valid as long as the underlying metadata byte buffer is alive.

Definition at line 351 of file contiguous_split.hpp.

Member Function Documentation

◆ child()

column_view cudf::packed_metadata_view::column_view::child ( size_type i ) const

A view of the i-th child column's metadata.

Exceptions

std::out_of_range if i is not contained in [0, num_children())

Parameters

i	Index of the child column

Returns: A packed_column_metadata_view for the i-th child

◆ null_count()

size_type cudf::packed_metadata_view::column_view::null_count ( ) const

Returns: The null count of this column.

◆ num_children()

size_type cudf::packed_metadata_view::column_view::num_children ( ) const

Returns: The number of children of this column.

◆ num_rows()

size_type cudf::packed_metadata_view::column_view::num_rows ( ) const

Returns: The number of rows in this column.

◆ type()

data_type cudf::packed_metadata_view::column_view::type ( ) const

Returns: The data_type of this column.

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

contiguous_split.hpp

Public Member Functions