[−][src]Enum parquet_format::ConvertedType
Common types used by frameworks(e.g. hive, pig) using parquet. This helps map between types in those frameworks to the base types in parquet. This is only metadata and not needed to read or write the data.
Variants
a BYTE_ARRAY actually contains UTF8 encoded chars
a map is converted as an optional field containing a repeated key/value pair
a key/value pair is converted into a group of two fields
a list is converted into an optional field containing a repeated field for its values
an enum is converted into a binary field
A decimal value.
This may be used to annotate binary or fixed primitive types. The underlying byte array stores the unscaled value encoded as two's complement using big-endian byte order (the most significant byte is the zeroth element). The value of the decimal is the value * 10^{-scale}.
This must be accompanied by a (maximum) precision and a scale in the SchemaElement. The precision specifies the number of digits in the decimal and the scale stores the location of the decimal point. For example 1.23 would have precision 3 (3 total digits) and scale 2 (the decimal point is 2 digits over).
A Date
Stored as days since Unix epoch, encoded as the INT32 physical type.
A time
The total number of milliseconds since midnight. The value is stored as an INT32 physical type.
A time.
The total number of microseconds since midnight. The value is stored as an INT64 physical type.
A date/time combination
Date and time recorded as milliseconds since the Unix epoch. Recorded as a physical type of INT64.
A date/time combination
Date and time recorded as microseconds since the Unix epoch. The value is stored as an INT64 physical type.
An unsigned integer value.
The number describes the maximum number of meainful data bits in the stored value. 8, 16 and 32 bit values are stored using the INT32 physical type. 64 bit values are stored using the INT64 physical type.
A signed integer value.
The number describes the maximum number of meainful data bits in the stored value. 8, 16 and 32 bit values are stored using the INT32 physical type. 64 bit values are stored using the INT64 physical type.
An embedded JSON document
A JSON document embedded within a single UTF8 column.
An embedded BSON document
A BSON document embedded within a single BINARY column.
An interval of time
This type annotates data stored as a FIXED_LEN_BYTE_ARRAY of length 12 This data is composed of three separate little endian unsigned integers. Each stores a component of a duration of time. The first integer identifies the number of months associated with the duration, the second identifies the number of days associated with the duration and the third identifies the number of milliseconds associated with the provided duration. This duration of time is independent of any particular timezone or date.
Implementations
impl ConvertedType
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pub fn write_to_out_protocol(
&self,
o_prot: &mut dyn TOutputProtocol
) -> Result<()>
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&self,
o_prot: &mut dyn TOutputProtocol
) -> Result<()>
pub fn read_from_in_protocol(
i_prot: &mut dyn TInputProtocol
) -> Result<ConvertedType>
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i_prot: &mut dyn TInputProtocol
) -> Result<ConvertedType>
Trait Implementations
impl Clone for ConvertedType
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fn clone(&self) -> ConvertedType
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fn clone_from(&mut self, source: &Self)
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impl Copy for ConvertedType
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impl Debug for ConvertedType
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impl Eq for ConvertedType
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impl Hash for ConvertedType
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fn hash<__H: Hasher>(&self, state: &mut __H)
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fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
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H: Hasher,
impl Ord for ConvertedType
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fn cmp(&self, other: &ConvertedType) -> Ordering
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#[must_use]fn max(self, other: Self) -> Self
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#[must_use]fn min(self, other: Self) -> Self
1.21.0[src]
#[must_use]fn clamp(self, min: Self, max: Self) -> Self
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impl PartialEq<ConvertedType> for ConvertedType
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fn eq(&self, other: &ConvertedType) -> bool
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#[must_use]fn ne(&self, other: &Rhs) -> bool
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impl PartialOrd<ConvertedType> for ConvertedType
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fn partial_cmp(&self, other: &ConvertedType) -> Option<Ordering>
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#[must_use]fn lt(&self, other: &Rhs) -> bool
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#[must_use]fn le(&self, other: &Rhs) -> bool
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#[must_use]fn gt(&self, other: &Rhs) -> bool
1.0.0[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
1.0.0[src]
impl StructuralEq for ConvertedType
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impl StructuralPartialEq for ConvertedType
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impl TryFrom<i32> for ConvertedType
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Auto Trait Implementations
impl RefUnwindSafe for ConvertedType
impl Send for ConvertedType
impl Sync for ConvertedType
impl Unpin for ConvertedType
impl UnwindSafe for ConvertedType
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>,