pub struct RecordBatch<'a> {
pub _tab: Table<'a>,
}
Expand description
A data header describing the shared memory layout of a “record” or “row” batch. Some systems call this a “row batch” internally and others a “record batch”.
Fields
_tab: Table<'a>
Implementations
sourceimpl<'a> RecordBatch<'a>
impl<'a> RecordBatch<'a>
pub fn init_from_table(table: Table<'a>) -> Self
pub fn create<'bldr: 'args, 'args: 'mut_bldr, 'mut_bldr>(
_fbb: &'mut_bldr mut FlatBufferBuilder<'bldr>,
args: &'args RecordBatchArgs<'args>
) -> WIPOffset<RecordBatch<'bldr>>
pub const VT_LENGTH: VOffsetT = 4u16
pub const VT_NODES: VOffsetT = 6u16
pub const VT_BUFFERS: VOffsetT = 8u16
pub const VT_COMPRESSION: VOffsetT = 10u16
sourcepub fn length(&self) -> i64
pub fn length(&self) -> i64
number of records / rows. The arrays in the batch should all have this length
sourcepub fn nodes(&self) -> Option<&'a [FieldNode]>
pub fn nodes(&self) -> Option<&'a [FieldNode]>
Nodes correspond to the pre-ordered flattened logical schema
sourcepub fn buffers(&self) -> Option<&'a [Buffer]>
pub fn buffers(&self) -> Option<&'a [Buffer]>
Buffers correspond to the pre-ordered flattened buffer tree
The number of buffers appended to this list depends on the schema. For example, most primitive arrays will have 2 buffers, 1 for the validity bitmap and 1 for the values. For struct arrays, there will only be a single buffer for the validity (nulls) bitmap
sourcepub fn compression(&self) -> Option<BodyCompression<'a>>
pub fn compression(&self) -> Option<BodyCompression<'a>>
Optional compression of the message body
Trait Implementations
sourceimpl<'a> Clone for RecordBatch<'a>
impl<'a> Clone for RecordBatch<'a>
sourcefn clone(&self) -> RecordBatch<'a>
fn clone(&self) -> RecordBatch<'a>
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
sourceimpl Debug for RecordBatch<'_>
impl Debug for RecordBatch<'_>
sourceimpl<'a> Follow<'a> for RecordBatch<'a>
impl<'a> Follow<'a> for RecordBatch<'a>
sourceimpl<'a> PartialEq<RecordBatch<'a>> for RecordBatch<'a>
impl<'a> PartialEq<RecordBatch<'a>> for RecordBatch<'a>
sourcefn eq(&self, other: &RecordBatch<'a>) -> bool
fn eq(&self, other: &RecordBatch<'a>) -> bool
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
sourcefn ne(&self, other: &RecordBatch<'a>) -> bool
fn ne(&self, other: &RecordBatch<'a>) -> bool
This method tests for !=
.
sourceimpl Verifiable for RecordBatch<'_>
impl Verifiable for RecordBatch<'_>
sourcefn run_verifier(
v: &mut Verifier<'_, '_>,
pos: usize
) -> Result<(), InvalidFlatbuffer>
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. Read more
impl<'a> Copy for RecordBatch<'a>
impl<'a> StructuralPartialEq for RecordBatch<'a>
Auto Trait Implementations
impl<'a> RefUnwindSafe for RecordBatch<'a>
impl<'a> Send for RecordBatch<'a>
impl<'a> Sync for RecordBatch<'a>
impl<'a> Unpin for RecordBatch<'a>
impl<'a> UnwindSafe for RecordBatch<'a>
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcefn clone_into(&self, target: &mut T)
fn clone_into(&self, target: &mut T)
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more