Struct Column 

pub struct Column { /* private fields */ }

One immutable column in a Schema.

Implementations

impl Column

pub fn new( id: u32, name: impl Into<String>, logical_type: LogicalType, nullable: bool, ) -> Self

Construct a column descriptor.

The writer checks the complete schema invariants, including nonzero unique IDs, unique names, and primary-column compatibility, before it creates a file.

pub fn id(&self) -> u32

The stable nonzero column ID stored in the file.

pub fn name(&self) -> &str

The UTF-8 column name.

pub fn logical_type(&self) -> &LogicalType

The column’s logical type.

pub fn is_nullable(&self) -> bool

Whether the column may contain null values.

Trait Implementations

impl Clone for Column

fn clone(&self) -> Column

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Column

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

Formats the value using the given formatter.

impl Eq for Column

impl PartialEq for Column

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Column