[−][src]Struct parquet::file::metadata::FileMetaData
Metadata for a Parquet file.
Methods
impl FileMetaData[src]
impl FileMetaDatapub fn new(
version: i32,
num_rows: i64,
created_by: Option<String>,
schema: TypePtr,
schema_descr: SchemaDescPtr,
column_orders: Option<Vec<ColumnOrder>>
) -> Self[src]
pub fn new(
version: i32,
num_rows: i64,
created_by: Option<String>,
schema: TypePtr,
schema_descr: SchemaDescPtr,
column_orders: Option<Vec<ColumnOrder>>
) -> SelfCreates new file metadata.
pub fn version(&self) -> i32[src]
pub fn version(&self) -> i32Returns version of this file.
pub fn num_rows(&self) -> i64[src]
pub fn num_rows(&self) -> i64Returns number of rows in the file.
pub fn created_by(&self) -> &Option<String>[src]
pub fn created_by(&self) -> &Option<String>String message for application that wrote this file.
This should have the following format:
<application> version <application version> (build <application build hash>).
parquet-mr version 1.8.0 (build 0fda28af84b9746396014ad6a415b90592a98b3b)
pub fn schema(&self) -> &SchemaType[src]
pub fn schema(&self) -> &SchemaTypeReturns Parquet ['Type`] that describes schema in this file.
pub fn schema_descr(&self) -> &SchemaDescriptor[src]
pub fn schema_descr(&self) -> &SchemaDescriptorReturns a reference to schema descriptor.
pub fn schema_descr_ptr(&self) -> SchemaDescPtr[src]
pub fn schema_descr_ptr(&self) -> SchemaDescPtrReturns reference counted clone for schema descriptor.
pub fn column_orders(&self) -> Option<&Vec<ColumnOrder>>[src]
pub fn column_orders(&self) -> Option<&Vec<ColumnOrder>>Column (sort) order used for min and max values of each column in this file.
Each column order corresponds to one column, determined by its position in the list, matching the position of the column in the schema.
When None is returned, there are no column orders available, and each column
should be assumed to have undefined (legacy) column order.
pub fn column_order(&self, i: usize) -> ColumnOrder[src]
pub fn column_order(&self, i: usize) -> ColumnOrderReturns column order for ith column in this file.
If column orders are not available, returns undefined (legacy) column order.
Auto Trait Implementations
impl !Send for FileMetaData
impl !Send for FileMetaDataimpl !Sync for FileMetaData
impl !Sync for FileMetaDataBlanket Implementations
impl<T> From for T[src]
impl<T> From for Timpl<T, U> Into for T where
U: From<T>, [src]
impl<T, U> Into for T where
U: From<T>, impl<T, U> TryFrom for T where
T: From<U>, [src]
impl<T, U> TryFrom for T where
T: From<U>, type Error = !
try_from)The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>try_from)Performs the conversion.
impl<T> Borrow for T where
T: ?Sized, [src]
impl<T> Borrow for T where
T: ?Sized, impl<T> Any for T where
T: 'static + ?Sized, [src]
impl<T> Any for T where
T: 'static + ?Sized, fn get_type_id(&self) -> TypeId[src]
fn get_type_id(&self) -> TypeId🔬 This is a nightly-only experimental API. (get_type_id)
this method will likely be replaced by an associated static
Gets the TypeId of self. Read more
impl<T> BorrowMut for T where
T: ?Sized, [src]
impl<T> BorrowMut for T where
T: ?Sized, fn borrow_mut(&mut self) -> &mut T[src]
fn borrow_mut(&mut self) -> &mut TMutably borrows from an owned value. Read more
impl<T, U> TryInto for T where
U: TryFrom<T>, [src]
impl<T, U> TryInto for T where
U: TryFrom<T>, type Error = <U as TryFrom<T>>::Error
try_from)The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>try_from)Performs the conversion.
impl<T, U> TryInto for T where
U: TryFrom<T>,
impl<T, U> TryInto for T where
U: TryFrom<T>, impl<E> SpecializationError for E[src]
impl<E> SpecializationError for Efn not_found<S, T>(trait_name: &'static str, method_name: &'static str) -> E where
T: ?Sized, [src]
fn not_found<S, T>(trait_name: &'static str, method_name: &'static str) -> E where
T: ?Sized, 🔬 This is a nightly-only experimental API. (rustc_private)
this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?
Create an error for a missing method specialization. Defaults to panicking with type, trait & method names. S is the encoder/decoder state type, T is the type being encoded/decoded, and the arguments are the names of the trait and method that should've been overridden. Read more
impl<T> Erased for T[src]
impl<T> Erased for Timpl<T> Send for T where
T: ?Sized, [src]
impl<T> Send for T where
T: ?Sized, impl<T> Sync for T where
T: ?Sized, [src]
impl<T> Sync for T where
T: ?Sized, impl<T> Erased for T
impl<T> Erased for T