[−][src]Struct arrow::ipc::gen::Schema::Field
A field represents a named column in a record / row batch or child of a nested type.
Fields
_tab: Table<'a>
Implementations
impl<'a> Field<'a>
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pub fn init_from_table(table: Table<'a>) -> Self
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pub fn create<'bldr: 'args, 'args: 'mut_bldr, 'mut_bldr>(
_fbb: &'mut_bldr mut FlatBufferBuilder<'bldr>,
args: &'args FieldArgs<'args>
) -> WIPOffset<Field<'bldr>>
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_fbb: &'mut_bldr mut FlatBufferBuilder<'bldr>,
args: &'args FieldArgs<'args>
) -> WIPOffset<Field<'bldr>>
pub const VT_NAME: VOffsetT
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pub const VT_NULLABLE: VOffsetT
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pub const VT_TYPE_TYPE: VOffsetT
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pub const VT_TYPE_: VOffsetT
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pub const VT_DICTIONARY: VOffsetT
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pub const VT_CHILDREN: VOffsetT
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pub const VT_CUSTOM_METADATA: VOffsetT
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pub fn name(&self) -> Option<&'a str>
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Name is not required, in i.e. a List
pub fn nullable(&self) -> bool
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Whether or not this field can contain nulls. Should be true in general.
pub fn type_type(&self) -> Type
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pub fn type_(&self) -> Option<Table<'a>>
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This is the type of the decoded value if the field is dictionary encoded.
pub fn dictionary(&self) -> Option<DictionaryEncoding<'a>>
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Present only if the field is dictionary encoded.
pub fn children(&self) -> Option<Vector<'a, ForwardsUOffset<Field<'a>>>>
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children apply only to nested data types like Struct, List and Union. For primitive types children will have length 0.
pub fn custom_metadata(
&self
) -> Option<Vector<'a, ForwardsUOffset<KeyValue<'a>>>>
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&self
) -> Option<Vector<'a, ForwardsUOffset<KeyValue<'a>>>>
User-defined metadata
pub fn type_as_null(&self) -> Option<Null<'a>>
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pub fn type_as_int(&self) -> Option<Int<'a>>
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pub fn type_as_floating_point(&self) -> Option<FloatingPoint<'a>>
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pub fn type_as_binary(&self) -> Option<Binary<'a>>
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pub fn type_as_utf_8(&self) -> Option<Utf8<'a>>
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pub fn type_as_bool(&self) -> Option<Bool<'a>>
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pub fn type_as_decimal(&self) -> Option<Decimal<'a>>
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pub fn type_as_date(&self) -> Option<Date<'a>>
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pub fn type_as_time(&self) -> Option<Time<'a>>
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pub fn type_as_timestamp(&self) -> Option<Timestamp<'a>>
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pub fn type_as_interval(&self) -> Option<Interval<'a>>
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pub fn type_as_list(&self) -> Option<List<'a>>
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pub fn type_as_struct_(&self) -> Option<Struct_<'a>>
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pub fn type_as_union(&self) -> Option<Union<'a>>
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pub fn type_as_fixed_size_binary(&self) -> Option<FixedSizeBinary<'a>>
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pub fn type_as_fixed_size_list(&self) -> Option<FixedSizeList<'a>>
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pub fn type_as_map(&self) -> Option<Map<'a>>
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pub fn type_as_duration(&self) -> Option<Duration<'a>>
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pub fn type_as_large_binary(&self) -> Option<LargeBinary<'a>>
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pub fn type_as_large_utf_8(&self) -> Option<LargeUtf8<'a>>
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pub fn type_as_large_list(&self) -> Option<LargeList<'a>>
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Trait Implementations
impl<'a> Clone for Field<'a>
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impl<'a> Copy for Field<'a>
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impl<'a> Debug for Field<'a>
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impl<'a> Follow<'a> for Field<'a>
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impl<'a> From<Field<'a>> for Field
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Convert an IPC Field to Arrow Field
impl<'a> PartialEq<Field<'a>> for Field<'a>
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impl<'a> StructuralPartialEq for Field<'a>
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Auto Trait Implementations
impl<'a> RefUnwindSafe for Field<'a>
impl<'a> Send for Field<'a>
impl<'a> Sync for Field<'a>
impl<'a> Unpin for Field<'a>
impl<'a> UnwindSafe for Field<'a>
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,