Struct datafusion::common::arrow::ipc::Schema

pub struct Schema<'a> {
    pub _tab: Table<'a>,
}

---

A Schema describes the columns in a row batch

Fields

_tab: Table<'a>

Implementations

impl<'a> Schema<'a>

pub const VT_ENDIANNESS: u16 = 4u16

pub const VT_FIELDS: u16 = 6u16

pub const VT_CUSTOM_METADATA: u16 = 8u16

pub const VT_FEATURES: u16 = 10u16

pub unsafe fn init_from_table(table: Table<'a>) -> Schema<'a>

pub fn create<'bldr, 'args, 'mut_bldr>( _fbb: &'mut_bldr mut FlatBufferBuilder<'bldr>, args: &'args SchemaArgs<'args>, ) -> WIPOffset<Schema<'bldr>>

where 'bldr: 'args, 'args: 'mut_bldr,

pub fn endianness(&self) -> Endianness

endianness of the buffer it is Little Endian by default if endianness doesn’t match the underlying system then the vectors need to be converted

pub fn fields(&self) -> Option<Vector<'a, ForwardsUOffset<Field<'a>>>>

pub fn custom_metadata( &self, ) -> Option<Vector<'a, ForwardsUOffset<KeyValue<'a>>>>

pub fn features(&self) -> Option<Vector<'a, Feature>>

Features used in the stream/file.

Trait Implementations

impl<'a> Clone for Schema<'a>

fn clone(&self) -> Schema<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Schema<'_>

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

Formats the value using the given formatter.

impl<'a> Follow<'a> for Schema<'a>

type Inner = Schema<'a>

unsafe fn follow(buf: &'a [u8], loc: usize) -> <Schema<'a> as Follow<'a>>::Inner

Safety

impl<'a> PartialEq for Schema<'a>

fn eq(&self, other: &Schema<'a>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Verifiable for Schema<'_>

fn run_verifier( v: &mut Verifier<'_, '_>, pos: usize, ) -> Result<(), InvalidFlatbuffer>

Runs the verifier for this type, assuming its at position pos in the verifier’s buffer. Should not need to be called directly.

impl<'a> Copy for Schema<'a>

impl<'a> StructuralPartialEq for Schema<'a>