Struct parquet::record::reader::TreeBuilder

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pub struct TreeBuilder { /* private fields */ }
Expand description

Tree builder for Reader enum. Serves as a container of options for building a reader tree and a builder, and accessing a records iterator RowIter.

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impl TreeBuilder

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pub fn new() -> Self

Creates new tree builder with default parameters.

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pub fn with_batch_size(self, batch_size: usize) -> Self

Sets batch size for this tree builder.

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pub fn build( &self, descr: SchemaDescPtr, row_group_reader: &dyn RowGroupReader, ) -> Result<Reader>

Creates new root reader for provided schema and row group.

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pub fn as_iter( &self, descr: SchemaDescPtr, row_group_reader: &dyn RowGroupReader, ) -> Result<ReaderIter>

Creates iterator of Rows directly from schema descriptor and row group.

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impl Default for TreeBuilder

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fn default() -> Self

Returns the “default value” for a type. Read more

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

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fn type_id(&self) -> TypeId

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impl<T> Borrow<T> for T
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fn borrow_mut(&mut self) -> &mut T

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impl<T> From<T> for T

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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).

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impl<T, U> TryFrom<U> for T
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type Error = Infallible

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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

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