Struct tc_table::Column

pub struct Column {
    pub name: Id,
    pub dtype: ValueType,
    pub max_len: Option<usize>,
}

A Column used in the schema of a BTree.

Fields

name: Id

dtype: ValueType

max_len: Option<usize>

Implementations

impl Column

pub fn name(&self) -> &Id

Get the name of this column.

pub fn dtype(&self) -> ValueType

Get the Class of this column.

pub fn max_len(&self) -> &Option<usize>

Get the maximum size (in bytes) of this column.

Trait Implementations

impl Clone for Column

pub fn clone(&self) -> Column

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Display for Column

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

Formats the value using the given formatter.

impl Eq for Column

impl<I> From<(I, NumberType)> for Column where
    I: Into<Id>, 

pub fn from(column: (I, NumberType)) -> Column

Performs the conversion.

impl From<(Id, ValueType, usize)> for Column

pub fn from(column: (Id, ValueType, usize)) -> Column

Performs the conversion.

impl From<(Id, ValueType)> for Column

pub fn from(column: (Id, ValueType)) -> Column

Performs the conversion.

impl FromStream for Column

type Context = ()

The decoding context of this type, useful in situations where the stream to be decoded may be too large to hold in main memory.

pub fn from_stream<'life0, 'async_trait, D>(
    __arg0: (),
    decoder: &'life0 mut D
) -> Pin<Box<dyn Future<Output = Result<Column, <D as Decoder>::Error>> + 'async_trait + Send, Global>> where
    'life0: 'async_trait,
    D: Decoder + 'async_trait,
    Column: 'async_trait, 

Parse this value using the given Decoder.

impl<'en> IntoStream<'en> for Column

pub fn into_stream<E>(
    self,
    encoder: E
) -> Result<<E as Encoder<'en>>::Ok, <E as Encoder<'en>>::Error> where
    E: Encoder<'en>, 

Take ownership of this value and serialize it into the given encoder.

impl PartialEq<Column> for Column

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

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

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

This method tests for !=.

impl StructuralEq for Column

impl StructuralPartialEq for Column

impl TryCastFrom<Value> for Column

pub fn can_cast_from(value: &Value) -> bool

Test if value can be cast into Self.

pub fn opt_cast_from(value: Value) -> Option<Column>

Returns Some(Self) if the source value can be cast into Self, otherwise None.

pub fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err> where
    OnErr: FnOnce(&T) -> Err, 

Returns Ok(Self) if the source value can be cast into Self, otherwise calls on_err.