Struct mz_repr::relation::RelationType
source · [−]pub struct RelationType {
pub column_types: Vec<ColumnType>,
pub keys: Vec<Vec<usize>>,
}
Expand description
The type of a relation.
Fields
column_types: Vec<ColumnType>
The type for each column, in order.
keys: Vec<Vec<usize>>
Sets of indices that are “keys” for the collection.
Each element in this list is a set of column indices, each with the property that the collection contains at most one record with each distinct set of values for each column. Alternately, for a specific set of values assigned to the these columns there is at most one record.
A collection can contain multiple sets of keys, although it is common to have either zero or one sets of key indices.
Implementations
sourceimpl RelationType
impl RelationType
sourcepub fn empty() -> Self
pub fn empty() -> Self
Constructs a RelationType
representing the relation with no columns and
no keys.
sourcepub fn new(column_types: Vec<ColumnType>) -> Self
pub fn new(column_types: Vec<ColumnType>) -> Self
Constructs a new RelationType
from specified column types.
The RelationType
will have no keys.
pub fn with_keys(self, keys: Vec<Vec<usize>>) -> Self
Trait Implementations
sourceimpl Arbitrary for RelationType
impl Arbitrary for RelationType
type Parameters = (<Vec<ColumnType, Global> as Arbitrary>::Parameters, <Vec<Vec<usize, Global>, Global> as Arbitrary>::Parameters)
type Parameters = (<Vec<ColumnType, Global> as Arbitrary>::Parameters, <Vec<Vec<usize, Global>, Global> as Arbitrary>::Parameters)
The type of parameters that arbitrary_with
accepts for configuration
of the generated Strategy
. Parameters must implement Default
. Read more
type Strategy = Map<(<Vec<ColumnType, Global> as Arbitrary>::Strategy, <Vec<Vec<usize, Global>, Global> as Arbitrary>::Strategy), fn((Vec<ColumnType, Global>, Vec<Vec<usize, Global>, Global>)) -> RelationType>
type Strategy = Map<(<Vec<ColumnType, Global> as Arbitrary>::Strategy, <Vec<Vec<usize, Global>, Global> as Arbitrary>::Strategy), fn((Vec<ColumnType, Global>, Vec<Vec<usize, Global>, Global>)) -> RelationType>
sourcefn arbitrary_with(_top: Self::Parameters) -> Self::Strategy
fn arbitrary_with(_top: Self::Parameters) -> Self::Strategy
sourceimpl Clone for RelationType
impl Clone for RelationType
sourcefn clone(&self) -> RelationType
fn clone(&self) -> RelationType
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
sourceimpl Debug for RelationType
impl Debug for RelationType
sourceimpl<'de> Deserialize<'de> for RelationType
impl<'de> Deserialize<'de> for RelationType
sourcefn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
__D: Deserializer<'de>,
fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
__D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more
sourceimpl Hash for RelationType
impl Hash for RelationType
sourceimpl MzReflect for RelationType
impl MzReflect for RelationType
sourcefn add_to_reflected_type_info(rti: &mut ReflectedTypeInfo)
fn add_to_reflected_type_info(rti: &mut ReflectedTypeInfo)
Adds names and types of the fields of the struct or enum to rti
. Read more
sourceimpl PartialEq<RelationType> for RelationType
impl PartialEq<RelationType> for RelationType
sourcefn eq(&self, other: &RelationType) -> bool
fn eq(&self, other: &RelationType) -> bool
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
sourcefn ne(&self, other: &RelationType) -> bool
fn ne(&self, other: &RelationType) -> bool
This method tests for !=
.
sourceimpl RustType<ProtoRelationType> for RelationType
impl RustType<ProtoRelationType> for RelationType
sourcefn into_proto(&self) -> ProtoRelationType
fn into_proto(&self) -> ProtoRelationType
Convert a Self
into a Proto
value.
sourcefn from_proto(proto: ProtoRelationType) -> Result<Self, TryFromProtoError>
fn from_proto(proto: ProtoRelationType) -> Result<Self, TryFromProtoError>
Consume and convert a Proto
back into a Self
value. Read more
sourceimpl Serialize for RelationType
impl Serialize for RelationType
impl Eq for RelationType
impl StructuralEq for RelationType
impl StructuralPartialEq for RelationType
Auto Trait Implementations
impl RefUnwindSafe for RelationType
impl Send for RelationType
impl Sync for RelationType
impl Unpin for RelationType
impl UnwindSafe for RelationType
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> CallHasher for T where
T: Hash + ?Sized,
impl<T> CallHasher for T where
T: Hash + ?Sized,
sourceimpl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
impl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
sourcefn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to key
and return true
if they are equal.
sourceimpl<T> FutureExt for T
impl<T> FutureExt for T
sourcefn with_context(self, otel_cx: Context) -> WithContext<Self>
fn with_context(self, otel_cx: Context) -> WithContext<Self>
sourcefn with_current_context(self) -> WithContext<Self>
fn with_current_context(self) -> WithContext<Self>
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
sourcefn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
sourceimpl<T> IntoRequest<T> for T
impl<T> IntoRequest<T> for T
sourcefn into_request(self) -> Request<T>
fn into_request(self) -> Request<T>
Wrap the input message T
in a tonic::Request
sourceimpl<P, R> ProtoType<R> for P where
R: RustType<P>,
impl<P, R> ProtoType<R> for P where
R: RustType<P>,
sourcefn into_rust(self) -> Result<R, TryFromProtoError>
fn into_rust(self) -> Result<R, TryFromProtoError>
See RustType::from_proto
.
sourcefn from_rust(rust: &R) -> P
fn from_rust(rust: &R) -> P
See RustType::into_proto
.
sourceimpl<T> WithSubscriber for T
impl<T> WithSubscriber for T
sourcefn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,
Attaches the provided Subscriber
to this type, returning a
WithDispatch
wrapper. Read more
sourcefn with_current_subscriber(self) -> WithDispatch<Self>
fn with_current_subscriber(self) -> WithDispatch<Self>
Attaches the current default Subscriber
to this type, returning a
WithDispatch
wrapper. Read more