Struct StoreMerger

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pub struct StoreMerger<'a, W: Write> { /* private fields */ }

Expand description

Store merger - concatenates compressed blocks from multiple stores without recompression

This is much faster than rebuilding stores since it avoids:

Decompressing blocks from source stores
Re-serializing documents
Re-compressing blocks at level 22

Limitations:

All source stores must NOT use dictionaries (or use the same dictionary)
Doc IDs are remapped sequentially

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impl<'a, W: Write> StoreMerger<'a, W>

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pub fn new(writer: &'a mut W) -> Self

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pub async fn append_store<F: AsyncFileRead>( &mut self, data_slice: &F, blocks: &[RawStoreBlock], ) -> Result<()>

Append raw compressed blocks from a store file

data_slice should be the data portion of the store (before index/footer) blocks contains the block metadata from the source store

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pub fn finish(self) -> Result<u32>

Finish writing the merged store

Auto Trait Implementations§

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impl<'a, W> !UnwindSafe for StoreMerger<'a, W>

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,

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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 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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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