Struct parquet2::metadata::ColumnDescriptor

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pub struct ColumnDescriptor { /* private fields */ }

Expand description

A descriptor for leaf-level primitive columns. This encapsulates information such as definition and repetition levels and is used to re-assemble nested data.

Implementations

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impl ColumnDescriptor

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pub fn new(
 primitive_type: ParquetType,
 max_def_level: i16,
 max_rep_level: i16,
 path_in_schema: Vec<String>,
 base_type: ParquetType
) -> Self

Creates new descriptor for leaf-level column.

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pub fn max_def_level(&self) -> i16

Returns maximum definition level for this column.

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pub fn max_rep_level(&self) -> i16

Returns maximum repetition level for this column.

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pub fn path_in_schema(&self) -> &[String ]

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pub fn base_type(&self) -> &ParquetType

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pub fn type_(&self) -> &ParquetType

Returns self type ParquetType for this leaf column.

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pub fn physical_type(&self) -> &PhysicalType

Returns self type PhysicalType for this leaf column.

Panic

This function panics if the corresponding ParquetType is not a primitive type

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pub fn name(&self) -> &str

Returns column name.

Trait Implementations

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impl Clone for ColumnDescriptor

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fn clone(&self) -> ColumnDescriptor

Returns a copy of the value. Read more

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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl Debug for ColumnDescriptor

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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impl PartialEq<ColumnDescriptor> for ColumnDescriptor

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fn eq(&self, other: &ColumnDescriptor) -> bool

This method tests for self and other values to be equal, and is used by ==. Read more

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fn ne(&self, other: &ColumnDescriptor) -> bool

This method tests for !=.

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impl StructuralPartialEq for ColumnDescriptor

Auto Trait Implementations

impl RefUnwindSafe for ColumnDescriptor

impl Send for ColumnDescriptor

impl Sync for ColumnDescriptor

impl Unpin for ColumnDescriptor

impl UnwindSafe for ColumnDescriptor

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> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

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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.

Struct parquet2::metadata::ColumnDescriptor

Implementations

impl ColumnDescriptor

pub fn new( primitive_type: ParquetType, max_def_level: i16, max_rep_level: i16, path_in_schema: Vec<String>, base_type: ParquetType) -> Self

pub fn max_def_level(&self) -> i16

pub fn max_rep_level(&self) -> i16

pub fn path_in_schema(&self) -> &[String]

pub fn base_type(&self) -> &ParquetType

pub fn type_(&self) -> &ParquetType

pub fn physical_type(&self) -> &PhysicalType

Panic

pub fn name(&self) -> &str

Trait Implementations

impl Clone for ColumnDescriptor

fn clone(&self) -> ColumnDescriptor

fn clone_from(&mut self, source: &Self)

impl Debug for ColumnDescriptor

fn fmt(&self, f: &mut Formatter<'_>) -> Result

impl PartialEq<ColumnDescriptor> for ColumnDescriptor

fn eq(&self, other: &ColumnDescriptor) -> bool

fn ne(&self, other: &ColumnDescriptor) -> bool

impl StructuralPartialEq for ColumnDescriptor

Auto Trait Implementations

impl RefUnwindSafe for ColumnDescriptor

impl Send for ColumnDescriptor

impl Sync for ColumnDescriptor

impl Unpin for ColumnDescriptor

impl UnwindSafe for ColumnDescriptor

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> ToOwned for T where T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

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>

pub fn new(
primitive_type: ParquetType,
max_def_level: i16,
max_rep_level: i16,
path_in_schema: Vec<String>,
base_type: ParquetType
) -> Self

pub fn path_in_schema(&self) -> &[String ]

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> ToOwned for T where
T: Clone,

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

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