Enum mz_avro::schema::SchemaPiece
source · pub enum SchemaPiece {
Show 34 variants
Null,
Boolean,
Int,
Long,
Float,
Double,
Date,
TimestampMilli,
TimestampMicro,
Decimal {
precision: usize,
scale: usize,
fixed_size: Option<usize>,
},
Bytes,
String,
Json,
Uuid,
Array(Box<SchemaPieceOrNamed>),
Map(Box<SchemaPieceOrNamed>),
Union(UnionSchema),
ResolveIntTsMilli,
ResolveIntTsMicro,
ResolveDateTimestamp,
ResolveIntLong,
ResolveIntFloat,
ResolveIntDouble,
ResolveLongFloat,
ResolveLongDouble,
ResolveFloatDouble,
ResolveConcreteUnion {
index: usize,
inner: Box<SchemaPieceOrNamed>,
n_reader_variants: usize,
reader_null_variant: Option<usize>,
},
ResolveUnionUnion {
permutation: Vec<Result<(usize, SchemaPieceOrNamed), Error>>,
n_reader_variants: usize,
reader_null_variant: Option<usize>,
},
ResolveUnionConcrete {
index: usize,
inner: Box<SchemaPieceOrNamed>,
},
Record {
doc: Documentation,
fields: Vec<RecordField>,
lookup: BTreeMap<String, usize>,
},
Enum {
doc: Documentation,
symbols: Vec<String>,
default_idx: Option<usize>,
},
Fixed {
size: usize,
},
ResolveRecord {
defaults: Vec<ResolvedDefaultValueField>,
fields: Vec<ResolvedRecordField>,
n_reader_fields: usize,
},
ResolveEnum {
doc: Documentation,
symbols: Vec<Result<(usize, String), String>>,
default: Option<(usize, String)>,
},
}
Variants§
Null
A null
Avro schema.
Boolean
A boolean
Avro schema.
Int
An int
Avro schema.
Long
A long
Avro schema.
Float
A float
Avro schema.
Double
A double
Avro schema.
Date
An Int
Avro schema with a semantic type being days since the unix epoch.
TimestampMilli
An Int64
Avro schema with a semantic type being milliseconds since the unix epoch.
https://avro.apache.org/docs/current/spec.html#Timestamp+%28millisecond+precision%29
TimestampMicro
An Int64
Avro schema with a semantic type being microseconds since the unix epoch.
https://avro.apache.org/docs/current/spec.html#Timestamp+%28microsecond+precision%29
Decimal
A bytes
or fixed
Avro schema with a logical type of decimal
and
the specified precision and scale.
If the underlying type is fixed
,
the fixed_size
field specifies the size.
Bytes
A bytes
Avro schema.
Bytes
represents a sequence of 8-bit unsigned bytes.
String
A string
Avro schema.
String
represents a unicode character sequence.
Json
A string
Avro schema that is tagged as representing JSON data
Uuid
A string
Avro schema with a logical type of uuid
.
Array(Box<SchemaPieceOrNamed>)
A array
Avro schema. Avro arrays are required to have the same type for each element.
This variant holds the Schema
for the array element type.
Map(Box<SchemaPieceOrNamed>)
A map
Avro schema.
Map
holds a pointer to the Schema
of its values, which must all be the same schema.
Map
keys are assumed to be string
.
Union(UnionSchema)
A union
Avro schema.
ResolveIntTsMilli
A value written as int
and read as long
,
for the timestamp-millis logicalType.
ResolveIntTsMicro
A value written as int
and read as long
,
for the timestamp-micros logicalType.
ResolveDateTimestamp
A value written as an int
with date
logical type,
and read as any timestamp type
ResolveIntLong
A value written as int
and read as long
ResolveIntFloat
A value written as int
and read as float
ResolveIntDouble
A value written as int
and read as double
ResolveLongFloat
A value written as long
and read as float
ResolveLongDouble
A value written as long
and read as double
ResolveFloatDouble
A value written as float
and read as double
ResolveConcreteUnion
Fields
inner: Box<SchemaPieceOrNamed>
The concrete type
A concrete (i.e., non-union
) type in the writer,
resolved against one specific variant of a union
in the reader.
ResolveUnionUnion
Fields
permutation: Vec<Result<(usize, SchemaPieceOrNamed), Error>>
A mapping of the fields in the writer to those in the reader.
If the i
th element is Err(e)
, the i
th field in the writer
did not match any field in the reader (or even if it matched by name, resolution failed).
If the i
th element is Ok((j, piece))
, then the i
th field of the writer
matched the j
th field of the reader, and piece
is their resolved node.
A union in the writer, resolved against a union in the reader. The two schemas may have different variants and the variants may be in a different order.
ResolveUnionConcrete
The inverse of ResolveConcreteUnion
Record
A record
Avro schema.
The lookup
table maps field names to their position in the Vec
of fields
.
Enum
Fields
doc: Documentation
An enum
Avro schema.
Fixed
A fixed
Avro schema.
ResolveRecord
Fields
defaults: Vec<ResolvedDefaultValueField>
Fields that do not exist in the writer schema, but had a default value specified in the reader schema, which we use.
fields: Vec<ResolvedRecordField>
Fields in the order of their appearance in the writer schema.
Present
if they could be resolved against a field in the reader schema;
Absent
otherwise.
A record in the writer, resolved against a record in the reader. The two schemas may have different fields and the fields may be in a different order.
ResolveEnum
Fields
doc: Documentation
An enum in the writer, resolved against an enum in the reader. The two schemas may have different values and the values may be in a different order.
Implementations§
source§impl SchemaPiece
impl SchemaPiece
sourcepub fn is_underlying_int(&self) -> bool
pub fn is_underlying_int(&self) -> bool
Returns whether the schema node is “underlyingly” an Int (but possibly a logicalType typedef)
sourcepub fn is_underlying_long(&self) -> bool
pub fn is_underlying_long(&self) -> bool
Returns whether the schema node is “underlyingly” an Int64 (but possibly a logicalType typedef)
Trait Implementations§
source§impl Clone for SchemaPiece
impl Clone for SchemaPiece
source§fn clone(&self) -> SchemaPiece
fn clone(&self) -> SchemaPiece
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for SchemaPiece
impl Debug for SchemaPiece
source§impl<'a> From<&'a SchemaPiece> for SchemaKind
impl<'a> From<&'a SchemaPiece> for SchemaKind
source§fn from(piece: &'a SchemaPiece) -> SchemaKind
fn from(piece: &'a SchemaPiece) -> SchemaKind
source§impl From<SchemaPiece> for SchemaPieceOrNamed
impl From<SchemaPiece> for SchemaPieceOrNamed
source§fn from(piece: SchemaPiece) -> Self
fn from(piece: SchemaPiece) -> Self
source§impl PartialEq for SchemaPiece
impl PartialEq for SchemaPiece
source§fn eq(&self, other: &SchemaPiece) -> bool
fn eq(&self, other: &SchemaPiece) -> bool
self
and other
values to be equal, and is used
by ==
.