Struct parquet::file::serialized_reader::SerializedFileReader

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pub struct SerializedFileReader<R: ChunkReader> { /* private fields */ }

Expand description

A serialized implementation for Parquet FileReader.

Implementations

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impl<R: 'static + ChunkReader> SerializedFileReader<R>

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pub fn new(chunk_reader: R) -> Result<Self>

Creates file reader from a Parquet file. Returns error if Parquet file does not exist or is corrupt.

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pub fn new_with_options(chunk_reader: R, options: ReadOptions) -> Result<Self>

Creates file reader from a Parquet file with read options. Returns error if Parquet file does not exist or is corrupt.

Trait Implementations

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impl<R: 'static + ChunkReader> FileReader for SerializedFileReader<R>

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fn metadata(&self) -> &ParquetMetaData

Get metadata information about this file.

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fn num_row_groups(&self) -> usize

Get the total number of row groups for this file.

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fn get_row_group(&self, i: usize) -> Result<Box<dyn RowGroupReader>>

Get the ith row group reader. Note this doesn’t do bound check.

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fn get_row_iter(&self, projection: Option<SchemaType>) -> Result<RowIter<'_>>

Get full iterator of Rows from a file (over all row groups). Read more

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impl IntoIterator for SerializedFileReader<File>

Conversion into a RowIter using the full file schema over all row groups.

type Item = Row

The type of the elements being iterated over.

type IntoIter = RowIter<'static>

Which kind of iterator are we turning this into?

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fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value. Read more

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impl<'a> TryFrom<&'a Path> for SerializedFileReader<File>

type Error = ParquetError

The type returned in the event of a conversion error.

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fn try_from(path: &Path) -> Result<Self>

Performs the conversion.

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impl<'a> TryFrom<&'a str> for SerializedFileReader<File>

type Error = ParquetError

The type returned in the event of a conversion error.

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fn try_from(path: &str) -> Result<Self>

Performs the conversion.

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impl TryFrom<File> for SerializedFileReader<File>

type Error = ParquetError

The type returned in the event of a conversion error.

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fn try_from(file: File) -> Result<Self>

Performs the conversion.

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impl TryFrom<String> for SerializedFileReader<File>

type Error = ParquetError

The type returned in the event of a conversion error.

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fn try_from(path: String) -> Result<Self>

Performs the conversion.

Auto Trait Implementations

impl<R> RefUnwindSafe for SerializedFileReader<R> where
R: RefUnwindSafe,

impl<R> Send for SerializedFileReader<R>

impl<R> Sync for SerializedFileReader<R>

impl<R> Unpin for SerializedFileReader<R>

impl<R> UnwindSafe for SerializedFileReader<R> where
R: RefUnwindSafe,

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,

const: unstable · source

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,

const: unstable · source

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

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

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 for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

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Struct parquet::file::serialized_reader::SerializedFileReader

Implementations

impl<R: 'static + ChunkReader> SerializedFileReader<R>

pub fn new(chunk_reader: R) -> Result<Self>

pub fn new_with_options(chunk_reader: R, options: ReadOptions) -> Result<Self>

Trait Implementations

impl<R: 'static + ChunkReader> FileReader for SerializedFileReader<R>

fn metadata(&self) -> &ParquetMetaData

fn num_row_groups(&self) -> usize

fn get_row_group(&self, i: usize) -> Result<Box<dyn RowGroupReader>>

fn get_row_iter(&self, projection: Option<SchemaType>) -> Result<RowIter<'_>>

impl IntoIterator for SerializedFileReader<File>

type Item = Row

type IntoIter = RowIter<'static>

fn into_iter(self) -> Self::IntoIter

impl<'a> TryFrom<&'a Path> for SerializedFileReader<File>

type Error = ParquetError

fn try_from(path: &Path) -> Result<Self>

impl<'a> TryFrom<&'a str> for SerializedFileReader<File>

type Error = ParquetError

fn try_from(path: &str) -> Result<Self>

impl TryFrom<File> for SerializedFileReader<File>

type Error = ParquetError

fn try_from(file: File) -> Result<Self>

impl TryFrom<String> for SerializedFileReader<File>

type Error = ParquetError

fn try_from(path: String) -> Result<Self>

Auto Trait Implementations

impl<R> RefUnwindSafe for SerializedFileReader<R> where R: RefUnwindSafe,

impl<R> Send for SerializedFileReader<R>

impl<R> Sync for SerializedFileReader<R>

impl<R> Unpin for SerializedFileReader<R>

impl<R> UnwindSafe for SerializedFileReader<R> where R: RefUnwindSafe,

Blanket Implementations

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

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

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

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

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

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<T> Allocation for T where T: RefUnwindSafe,

impl<R> RefUnwindSafe for SerializedFileReader<R> where
R: RefUnwindSafe,

impl<R> UnwindSafe for SerializedFileReader<R> where
R: RefUnwindSafe,

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

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

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

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

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

impl<T> Allocation for T where
T: RefUnwindSafe,