Struct deltalake::datafusion::parquet::record::reader::TreeBuilder
source · 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
.
Implementations§
source§impl TreeBuilder
impl TreeBuilder
sourcepub fn new() -> TreeBuilder
pub fn new() -> TreeBuilder
Creates new tree builder with default parameters.
sourcepub fn with_batch_size(self, batch_size: usize) -> TreeBuilder
pub fn with_batch_size(self, batch_size: usize) -> TreeBuilder
Sets batch size for this tree builder.
sourcepub fn build(
&self,
descr: Arc<SchemaDescriptor>,
row_group_reader: &dyn RowGroupReader
) -> Result<Reader, ParquetError>
pub fn build( &self, descr: Arc<SchemaDescriptor>, row_group_reader: &dyn RowGroupReader ) -> Result<Reader, ParquetError>
Creates new root reader for provided schema and row group.
sourcepub fn as_iter(
&self,
descr: Arc<SchemaDescriptor>,
row_group_reader: &dyn RowGroupReader
) -> Result<ReaderIter, ParquetError>
pub fn as_iter( &self, descr: Arc<SchemaDescriptor>, row_group_reader: &dyn RowGroupReader ) -> Result<ReaderIter, ParquetError>
Creates iterator of Row
s directly from schema descriptor and row group.
Trait Implementations§
source§impl Default for TreeBuilder
impl Default for TreeBuilder
source§fn default() -> TreeBuilder
fn default() -> TreeBuilder
Returns the “default value” for a type. Read more
Auto Trait Implementations§
impl Freeze for TreeBuilder
impl RefUnwindSafe for TreeBuilder
impl Send for TreeBuilder
impl Sync for TreeBuilder
impl Unpin for TreeBuilder
impl UnwindSafe for TreeBuilder
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
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 moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
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 moreCreates a shared type from an unshared type.