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BlockReader

Struct BlockReader 

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pub struct BlockReader<'io, I: Io + ?Sized> { /* private fields */ }
Expand description

Reads consecutive Native Block values from an Io implementation.

Reader retains buffered bytes between calls to read.

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impl<'io, I: Io + ?Sized> BlockReader<'io, I>

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pub fn new( io: Pin<&'io mut I>, alloc: Allocator, opts: BlockOpts, ) -> Result<Self>

Creates a reader using framing described by opts.

Use BlockOpts::default for output from clickhouse local.

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pub fn read(&mut self) -> Result<Option<Block>>

Decodes next block. Returns None for EOF at a block boundary.

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impl<I: Io + ?Sized> Drop for BlockReader<'_, I>

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fn drop(&mut self)

Executes the destructor for this type. Read more
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fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)
Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned. Read more

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impl<'io, I> !Send for BlockReader<'io, I>

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impl<'io, I> !Sync for BlockReader<'io, I>

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impl<'io, I> !UnwindSafe for BlockReader<'io, I>

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impl<'io, I> Freeze for BlockReader<'io, I>
where Pin<&'io mut I>: Freeze, I: ?Sized,

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impl<'io, I> RefUnwindSafe for BlockReader<'io, I>

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impl<'io, I> Unpin for BlockReader<'io, I>
where Pin<&'io mut I>: Unpin, I: ?Sized,

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impl<'io, I> UnsafeUnpin for BlockReader<'io, I>

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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,

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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,

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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

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fn from(t: T) -> T

Returns the argument unchanged.

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

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

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.