Struct ColMetaData 

pub struct ColMetaData {
    pub columns: Vec<ColumnData>,
}

Column metadata token.

Fields

columns: Vec<ColumnData>

Column definitions.

Implementations

impl ColMetaData

pub const NO_METADATA: u16 = 65_535u16

Special value indicating no metadata.

pub fn decode(src: &mut impl Buf) -> Result<Self, ProtocolError>

Decode a COLMETADATA token from bytes.

pub fn column_count(&self) -> usize

Get the number of columns.

pub fn is_empty(&self) -> bool

Check if this represents no metadata.

Trait Implementations

impl Clone for ColMetaData

fn clone(&self) -> ColMetaData

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColMetaData

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

Formats the value using the given formatter.

impl Default for ColMetaData

fn default() -> ColMetaData

Returns the “default value” for a type.