Enum parquet::schema::types::Type

source ·
pub enum Type {
    PrimitiveType {
        basic_info: BasicTypeInfo,
        physical_type: Type,
        type_length: i32,
        scale: i32,
        precision: i32,
    },
    GroupType {
        basic_info: BasicTypeInfo,
        fields: Vec<TypePtr>,
    },
}
Expand description

Representation of a Parquet type. Used to describe primitive leaf fields and structs, including top-level schema. Note that the top-level schema type is represented using GroupType whose repetition is None.

Variants§

§

PrimitiveType

Fields

§basic_info: BasicTypeInfo
§physical_type: Type
§type_length: i32
§scale: i32
§precision: i32
§

GroupType

Fields

§basic_info: BasicTypeInfo
§fields: Vec<TypePtr>

Implementations§

source§

impl Type

source

pub fn primitive_type_builder( name: &str, physical_type: PhysicalType, ) -> PrimitiveTypeBuilder<'_>

Creates primitive type builder with provided field name and physical type.

source

pub fn group_type_builder(name: &str) -> GroupTypeBuilder<'_>

Creates group type builder with provided column name.

source

pub fn get_basic_info(&self) -> &BasicTypeInfo

Returns BasicTypeInfo information about the type.

source

pub fn name(&self) -> &str

Returns this type’s field name.

source

pub fn get_fields(&self) -> &[TypePtr]

Gets the fields from this group type. Note that this will panic if called on a non-group type.

source

pub fn get_physical_type(&self) -> PhysicalType

Gets physical type of this primitive type. Note that this will panic if called on a non-primitive type.

source

pub fn get_precision(&self) -> i32

Gets precision of this primitive type. Note that this will panic if called on a non-primitive type.

source

pub fn get_scale(&self) -> i32

Gets scale of this primitive type. Note that this will panic if called on a non-primitive type.

source

pub fn check_contains(&self, sub_type: &Type) -> bool

Checks if sub_type schema is part of current schema. This method can be used to check if projected columns are part of the root schema.

source

pub fn is_primitive(&self) -> bool

Returns true if this type is a primitive type, false otherwise.

source

pub fn is_group(&self) -> bool

Returns true if this type is a group type, false otherwise.

source

pub fn is_schema(&self) -> bool

Returns true if this type is the top-level schema type (message type).

source

pub fn is_optional(&self) -> bool

Returns true if this type is repeated or optional. If this type doesn’t have repetition defined, we still treat it as optional.

Trait Implementations§

source§

impl Clone for Type

source§

fn clone(&self) -> Type

Returns a copy of the value. Read more
1.0.0 · source§

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

Performs copy-assignment from source. Read more
source§

impl Debug for Type

source§

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

Formats the value using the given formatter. Read more
source§

impl PartialEq for Type

source§

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

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
source§

impl StructuralPartialEq for Type

Auto Trait Implementations§

§

impl Freeze for Type

§

impl RefUnwindSafe for Type

§

impl Send for Type

§

impl Sync for Type

§

impl Unpin for Type

§

impl UnwindSafe for Type

Blanket Implementations§

source§

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

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

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

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

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

source§

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

Mutably borrows from an owned value. Read more
source§

impl<T> CloneToUninit for T
where T: Clone,

source§

default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

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

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.

source§

impl<T> ToOwned for T
where T: Clone,

§

type Owned = T

The resulting type after obtaining ownership.
source§

fn to_owned(&self) -> T

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

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

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

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

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

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

Performs the conversion.
source§

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

§

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

The type returned in the event of a conversion error.
source§

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

Performs the conversion.
source§

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

source§

fn vzip(self) -> V

source§

impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,