Inheritance diagram for cudf::structs_column_view:
Public Member Functions | |
| structs_column_view (structs_column_view const &)=default | |
| structs_column_view (structs_column_view &&)=default | |
| structs_column_view & | operator= (structs_column_view const &)=default |
| structs_column_view & | operator= (structs_column_view &&)=default |
| structs_column_view (column_view const &rhs) | |
| column_view | get_sliced_child (int index) const |
| Returns the internal child column, applying any offset from the root. More... | |
| auto | child_begin () const noexcept |
| Returns iterator to the beginning of the ordered sequence of child column-views. | |
| auto | child_end () const noexcept |
| Returns iterator to the end of the ordered sequence of child column-views. | |
| size_type | num_children () const noexcept |
| Returns the number of child columns. | |
 Public Member Functions inherited from cudf::column_view | |
| column_view (column_view const &c)=default | |
| column_view (column_view &&)=default | |
| column_view & | operator= (column_view const &)=default |
| column_view & | operator= (column_view &&)=default |
| column_view (data_type type, size_type size, void const *data, bitmask_type const *null_mask=nullptr, size_type null_count=UNKNOWN_NULL_COUNT, size_type offset=0, std::vector< column_view > const &children={}) | |
Construct a column_view from pointers to device memory for the elements and bitmask of the column. More... | |
| column_view | child (size_type child_index) const noexcept |
| Returns the specified child. More... | |
| size_type | num_children () const noexcept |
| Returns the number of child columns. | |
| auto | child_begin () const noexcept |
| Returns iterator to the beginning of the ordered sequence of child column-views. | |
| auto | child_end () const noexcept |
| Returns iterator to the end of the ordered sequence of child column-views. | |
| Public Member Functions inherited from cudf::detail::column_view_base | |
| template<typename T = void> | |
| T const * | head () const noexcept |
| Returns pointer to the base device memory allocation casted to the specified type. More... | |
| template<typename T > | |
| T const * | data () const noexcept |
| Returns the underlying data casted to the specified type, plus the offset. More... | |
| template<typename T > | |
| T const * | begin () const noexcept |
| Return first element (accounting for offset) after underlying data is casted to the specified type. More... | |
| template<typename T > | |
| T const * | end () const noexcept |
| Return one past the last element after underlying data is casted to the specified type. More... | |
| size_type | size () const noexcept |
| Returns the number of elements in the column. | |
| size_type | is_empty () const noexcept |
Returns true if size() returns zero, or false otherwise. | |
| data_type | type () const noexcept |
Returns the element data_type | |
| bool | nullable () const noexcept |
| Indicates if the column can contain null elements, i.e., if it has an allocated bitmask. More... | |
| size_type | null_count () const |
| Returns the count of null elements. More... | |
| size_type | null_count (size_type begin, size_type end) const |
| Returns the count of null elements in the range [begin, end) More... | |
| bool | has_nulls () const |
Indicates if the column contains null elements, i.e., null_count() > 0 More... | |
| bool | has_nulls (size_type begin, size_type end) const |
Indicates if the column contains null elements in the range [begin, end), i.e., null_count(begin, end) > 0 More... | |
| bitmask_type const * | null_mask () const noexcept |
| Returns raw pointer to the underlying bitmask allocation. More... | |
| size_type | offset () const noexcept |
Returns the index of the first element relative to the base memory allocation, i.e., what is returned from head<T>(). | |
Additional Inherited Members | |
| Protected Member Functions inherited from cudf::detail::column_view_base | |
| column_view_base (column_view_base const &)=default | |
| column_view_base (column_view_base &&)=default | |
| column_view_base & | operator= (column_view_base const &)=default |
| column_view_base & | operator= (column_view_base &&)=default |
| column_view_base (data_type type, size_type size, void const *data, bitmask_type const *null_mask=nullptr, size_type null_count=UNKNOWN_NULL_COUNT, size_type offset=0) | |
Construct a column_view_base from pointers to device memory for the elements and bitmask of the column. More... | |
| Protected Attributes inherited from cudf::detail::column_view_base | |
| data_type | _type {type_id::EMPTY} |
| Element type. | |
| size_type | _size {} |
| Number of elements. | |
| void const * | _data {} |
| Pointer to device memory containing elements. | |
| bitmask_type const * | _null_mask {} |
| size_type | _null_count {} |
| The number of null elements. | |
| size_type | _offset {} |
Detailed Description
Definition at line 33 of file structs_column_view.hpp.
Member Function Documentation
◆ get_sliced_child()
| column_view cudf::structs_column_view::get_sliced_child | ( | int | index | ) | const |
Returns the internal child column, applying any offset from the root.
Slice/split offset values are only stored at the root level of a struct column. So when doing computations on them, we need to apply that offset to the child columns when recursing. Most functions operating in a recursive manner on struct columns should be using get_sliced_child() instead of child().
- Exceptions
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cudf::logic error if this is an empty column
The documentation for this class was generated from the following file:
