Struct convergence::protocol_ext::DataRowBatch

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pub struct DataRowBatch { /* private fields */ }

Expand description

Supports batched rows for e.g. returning portal result sets.

NB: this struct only performs limited validation of column consistency across rows.

Implementations

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impl DataRowBatch

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pub fn new(format_code: FormatCode, num_cols: usize) -> Self

Creates a new row batch using the given format code, requiring a certain number of columns per row.

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pub fn from_row_desc(desc: &RowDescription) -> Self

Creates a DataRowBatch from the given RowDescription.

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pub fn create_row(&mut self) -> DataRowWriter<'_>

Starts writing a new row.

Returns a DataRowWriter that is responsible for the actual value encoding.

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pub fn num_rows(&self) -> usize

Returns the number of rows currently written to this batch.

Trait Implementations

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impl Encoder<DataRowBatch> for ConnectionCodec

type Error = ProtocolError

The type of encoding errors. Read more

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fn encode(
 &mut self,
 item: DataRowBatch,
 dst: &mut BytesMut
) -> Result<(), Self::Error>

Encodes a frame into the buffer provided. Read more

Auto Trait Implementations

impl RefUnwindSafe for DataRowBatch

impl Send for DataRowBatch

impl Sync for DataRowBatch

impl Unpin for DataRowBatch

impl UnwindSafe for DataRowBatch

Blanket Implementations

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impl<T> Any for T where
T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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impl<T, U> Into for T where
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more

Struct convergence::protocol_ext::DataRowBatch

Implementations

impl DataRowBatch

pub fn new(format_code: FormatCode, num_cols: usize) -> Self

pub fn from_row_desc(desc: &RowDescription) -> Self

pub fn create_row(&mut self) -> DataRowWriter<'_>

pub fn num_rows(&self) -> usize

Trait Implementations

impl Encoder<DataRowBatch> for ConnectionCodec

type Error = ProtocolError

fn encode(
    &mut self,
    item: DataRowBatch,
    dst: &mut BytesMut
) -> Result<(), Self::Error>

Auto Trait Implementations

impl RefUnwindSafe for DataRowBatch

impl Send for DataRowBatch

impl Sync for DataRowBatch

impl Unpin for DataRowBatch

impl UnwindSafe for DataRowBatch

Blanket Implementations

impl<T> Any for T where
T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where
T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where
T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

fn in_current_span(self) -> Instrumented<Self>

impl<T, U> Into<U> for T where
U: From<T>,

fn into(self) -> U

impl<T, U> TryFrom<U> for T where
U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<T> WithSubscriber for T

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,

fn with_current_subscriber(self) -> WithDispatch<Self>

Struct convergence::protocol_ext::DataRowBatch

Implementations

impl DataRowBatch

pub fn new(format_code: FormatCode, num_cols: usize) -> Self

pub fn from_row_desc(desc: &RowDescription) -> Self

pub fn create_row(&mut self) -> DataRowWriter<'_>

pub fn num_rows(&self) -> usize

Trait Implementations

impl Encoder<DataRowBatch> for ConnectionCodec

type Error = ProtocolError

fn encode( &mut self, item: DataRowBatch, dst: &mut BytesMut) -> Result<(), Self::Error>

Auto Trait Implementations

impl RefUnwindSafe for DataRowBatch

impl Send for DataRowBatch

impl Sync for DataRowBatch

impl Unpin for DataRowBatch

impl UnwindSafe for DataRowBatch

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

fn in_current_span(self) -> Instrumented<Self>

impl<T, U> Into<U> for T where U: From<T>,

fn into(self) -> U

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<T> WithSubscriber for T

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where S: Into<Dispatch>,

fn with_current_subscriber(self) -> WithDispatch<Self>

fn encode(
&mut self,
item: DataRowBatch,
dst: &mut BytesMut
) -> Result<(), Self::Error>

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<T, U> Into<U> for T where
U: From<T>,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,