Struct parquet::schema::types::ColumnDescriptor

pub struct ColumnDescriptor { /* private fields */ }

A descriptor for leaf-level primitive columns. This encapsulates information such as definition and repetition levels and is used to re-assemble nested data.

Implementations

impl ColumnDescriptor

pub fn new( primitive_type: TypePtr, max_def_level: i16, max_rep_level: i16, path: ColumnPath ) -> Self

Creates new descriptor for leaf-level column.

pub fn max_def_level(&self) -> i16

Returns maximum definition level for this column.

pub fn max_rep_level(&self) -> i16

Returns maximum repetition level for this column.

pub fn path(&self) -> &ColumnPath

Returns ColumnPath for this column.

pub fn self_type(&self) -> &Type

Returns self type Type for this leaf column.

pub fn self_type_ptr(&self) -> TypePtr

Returns self type TypePtr for this leaf column.

pub fn name(&self) -> &str

Returns column name.

pub fn converted_type(&self) -> ConvertedType

Returns ConvertedType for this column.

pub fn logical_type(&self) -> Option<LogicalType>

Returns LogicalType for this column.

pub fn physical_type(&self) -> PhysicalType

Returns physical type for this column. Note that it will panic if called on a non-primitive type.

pub fn type_length(&self) -> i32

Returns type length for this column. Note that it will panic if called on a non-primitive type.

pub fn type_precision(&self) -> i32

Returns type precision for this column. Note that it will panic if called on a non-primitive type.

pub fn type_scale(&self) -> i32

Returns type scale for this column. Note that it will panic if called on a non-primitive type.

pub fn sort_order(&self) -> SortOrder

Returns the sort order for this column

Trait Implementations

impl Debug for ColumnDescriptor

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for ColumnDescriptor

fn eq(&self, other: &ColumnDescriptor) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for ColumnDescriptor