Struct parquet::schema::types::ColumnDescriptor

pub struct ColumnDescriptor { /* fields omitted */ }

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

Methods

impl ColumnDescriptor

pub fn new(     primitive_type: TypePtr,     root_type: Option<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 root_type(&self) -> &Type

Returns root Type (most top-level parent field) for this leaf column.

pub fn name(&self) -> &str

Returns column name.

pub fn logical_type(&self) -> 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.