Trait ColumnData 

pub trait ColumnData {
    // Required methods
    fn sql_type(&self) -> SqlType;
    fn save(&self, encoder: &mut Encoder, start: usize, end: usize);
    fn len(&self) -> usize;
    fn push(&mut self, value: Value);
    fn at(&self, index: usize) -> ValueRef<'_>;
    fn clone_instance(&self) -> BoxColumnData;

    // Provided methods
    fn is_empty(&self) -> bool { ... }
    unsafe fn get_internal(
        &self,
        _pointers: &[*mut *const u8],
        _level: u8,
    ) -> Result<()> { ... }
    fn cast_to(
        &self,
        _this: &ArcColumnData,
        _target: &SqlType,
    ) -> Option<ArcColumnData> { ... }
}

Required Methods

fn sql_type(&self) -> SqlType

fn save(&self, encoder: &mut Encoder, start: usize, end: usize)

fn len(&self) -> usize

fn push(&mut self, value: Value)

fn at(&self, index: usize) -> ValueRef<'_>

fn clone_instance(&self) -> BoxColumnData

Provided Methods

fn is_empty(&self) -> bool

unsafe fn get_internal( &self, _pointers: &[*mut *const u8], _level: u8, ) -> Result<()>

fn cast_to( &self, _this: &ArcColumnData, _target: &SqlType, ) -> Option<ArcColumnData>

Implementors

impl ColumnData for ConcatColumnData

impl ColumnData for DateTime64ColumnData

impl ColumnData for ArrayColumnData

impl ColumnData for NullableColumnData

impl ColumnData for StringColumnData

impl ColumnData for TupleColumnData

impl<T> ColumnData for VectorColumnData<T>

where T: StatBuffer + Unmarshal<T> + Marshal + Copy + Into<Value> + From<Value> + Send + Sync + HasSqlType + 'static,