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
.
Fields of PrimitiveType
Fields of GroupType
Creates primitive type builder with provided field name and physical type.
Creates group type builder with provided column name.
Returns this type's field name.
Gets the fields from this group type.
Note that this will panic if called on a non-group type.
Gets physical type of this primitive type.
Note that this will panic if called on a non-primitive type.
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.
Returns true
if this type is a primitive type, false
otherwise.
Returns true
if this type is a group type, false
otherwise.
Returns true
if this type is the top-level schema type (message type).
This method tests for self
and other
values to be equal, and is used by ==
. Read more
This method tests for !=
.
Formats the value using the given formatter. Read more
🔬 This is a nightly-only experimental API. (try_from
)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (try_from
)
Immutably borrows from an owned value. Read more
🔬 This is a nightly-only experimental API. (get_type_id
)
this method will likely be replaced by an associated static
🔬 This is a nightly-only experimental API. (try_from
)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (try_from
)
Mutably borrows from an owned value. Read more
🔬 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, U> TryInto for T where U: TryFrom<T>, | |
type Err = <U as TryFrom<T>>::Err