Struct parquet::record::reader::TreeBuilder

pub struct TreeBuilder { /* fields omitted */ }

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.

Implementations

impl TreeBuilder

pub fn new() -> Self

Creates new tree builder with default parameters.

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

Sets batch size for this tree builder.

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

Creates new root reader for provided schema and row group.

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

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