ShardedWriterWithKey

Struct ShardedWriterWithKey

pub struct ShardedWriterWithKey<FKey> { /* private fields */ }

Implementations§

impl<FKey> ShardedWriterWithKey<FKey>
where FKey: Fn(&StringRecord) -> String,

pub fn with_output_shard_naming<FNameFile>( self, create_output_filename: FNameFile, ) -> ShardedWriter<FKey, FNameFile>
where FNameFile: Fn(&str, usize) -> String,

Specifies how output shard files will be named.

The specified function will be called with the key value (derived from the key_selector passed to ShardedWriterBuilder::with_key_selector) and the current sequence number, which is a zero-based number identifying how many files have been written for this shard.

Auto Trait Implementations§

impl<FKey> Freeze for ShardedWriterWithKey<FKey>
where FKey: Freeze,

impl<FKey> RefUnwindSafe for ShardedWriterWithKey<FKey>
where FKey: RefUnwindSafe,

impl<FKey> Send for ShardedWriterWithKey<FKey>
where FKey: Send,

impl<FKey> Sync for ShardedWriterWithKey<FKey>
where FKey: Sync,

impl<FKey> Unpin for ShardedWriterWithKey<FKey>
where FKey: Unpin,

impl<FKey> UnwindSafe for ShardedWriterWithKey<FKey>
where FKey: UnwindSafe,

Blanket Implementations§

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

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

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

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

fn into(self) -> U

Calls U::from(self).

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

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

type Error = Infallible

The type returned in the event of a conversion error.

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

Performs the conversion.

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

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

The type returned in the event of a conversion error.

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

Performs the conversion.