Struct tc_table::IndexSchema [−][src]
pub struct IndexSchema { /* fields omitted */ }
Expand description
The schema of a Table
index
Implementations
impl IndexSchema
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impl IndexSchema
[src]pub fn column_names(&self) -> impl Iterator<Item = &Id>
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pub fn column_names(&self) -> impl Iterator<Item = &Id>
[src]Iterate over the names of the columns in this schema.
pub fn key_values_from_row(
&self,
row: Row
) -> TCResult<(Vec<Value>, Vec<Value>)>
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pub fn key_values_from_row(
&self,
row: Row
) -> TCResult<(Vec<Value>, Vec<Value>)>
[src]Given a Row
, return a (key, values)
tuple.
pub fn row_from_key_values(
&self,
key: Vec<Value>,
values: Vec<Value>
) -> TCResult<Row>
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pub fn row_from_key_values(
&self,
key: Vec<Value>,
values: Vec<Value>
) -> TCResult<Row>
[src]Given a key
and values
, return a Row
.
pub fn row_from_values(&self, values: Vec<Value>) -> TCResult<Row>
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pub fn row_from_values(&self, values: Vec<Value>) -> TCResult<Row>
[src]Given a list of Value
s, return a Row
.
pub fn starts_with(&self, expected: &[Id]) -> bool
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pub fn starts_with(&self, expected: &[Id]) -> bool
[src]Return true
if this schema starts with the given slice of column names.
pub fn auxiliary(&self, key: &[Id]) -> TCResult<IndexSchema>
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pub fn auxiliary(&self, key: &[Id]) -> TCResult<IndexSchema>
[src]Return the IndexSchema
needed to index the given columns.
pub fn validate_columns(&self, columns: &[Id]) -> TCResult<()>
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pub fn validate_columns(&self, columns: &[Id]) -> TCResult<()>
[src]Return an error if this schema does not support ordering by the given columns.
pub fn validate_key(&self, key: Vec<Value>) -> TCResult<Vec<Value>>
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pub fn validate_key(&self, key: Vec<Value>) -> TCResult<Vec<Value>>
[src]Return an error if the given key does not match this schema.
pub fn validate_row_partial(&self, row: Row) -> TCResult<Row>
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pub fn validate_row_partial(&self, row: Row) -> TCResult<Row>
[src]Return an error if the given Row
has any extra fields or incompatible values.
Trait Implementations
impl Clone for IndexSchema
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impl Clone for IndexSchema
[src]fn clone(&self) -> IndexSchema
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fn clone(&self) -> IndexSchema
[src]Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0[src]
fn clone_from(&mut self, source: &Self)
1.0.0[src]Performs copy-assignment from source
. Read more
impl Display for IndexSchema
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impl Display for IndexSchema
[src]impl From<IndexSchema> for RowSchema
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impl From<IndexSchema> for RowSchema
[src]fn from(schema: IndexSchema) -> RowSchema
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fn from(schema: IndexSchema) -> RowSchema
[src]Performs the conversion.
impl From<IndexSchema> for TableSchema
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impl From<IndexSchema> for TableSchema
[src]fn from(schema: IndexSchema) -> TableSchema
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fn from(schema: IndexSchema) -> TableSchema
[src]Performs the conversion.
impl FromStream for IndexSchema
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impl FromStream for IndexSchema
[src]impl<'en> IntoStream<'en> for IndexSchema
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impl<'en> IntoStream<'en> for IndexSchema
[src]impl PartialEq<IndexSchema> for IndexSchema
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impl PartialEq<IndexSchema> for IndexSchema
[src]fn eq(&self, other: &IndexSchema) -> bool
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fn eq(&self, other: &IndexSchema) -> bool
[src]This method tests for self
and other
values to be equal, and is used
by ==
. Read more
fn ne(&self, other: &IndexSchema) -> bool
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fn ne(&self, other: &IndexSchema) -> bool
[src]This method tests for !=
.
impl TryCastFrom<Value> for IndexSchema
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impl TryCastFrom<Value> for IndexSchema
[src]fn can_cast_from(value: &Value) -> bool
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fn can_cast_from(value: &Value) -> bool
[src]Test if value
can be cast into Self
.
fn opt_cast_from(value: Value) -> Option<IndexSchema>
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fn opt_cast_from(value: Value) -> Option<IndexSchema>
[src]Returns Some(Self)
if the source value can be cast into Self
, otherwise None
.
fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err> where
OnErr: FnOnce(&T) -> Err,
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fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err> where
OnErr: FnOnce(&T) -> Err,
[src]Returns Ok(Self)
if the source value can be cast into Self
, otherwise calls on_err
.
impl Eq for IndexSchema
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impl StructuralEq for IndexSchema
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impl StructuralPartialEq for IndexSchema
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Auto Trait Implementations
impl RefUnwindSafe for IndexSchema
impl Send for IndexSchema
impl Sync for IndexSchema
impl Unpin for IndexSchema
impl UnwindSafe for IndexSchema
Blanket Implementations
impl<T> BorrowMut<T> for T where
T: ?Sized,
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impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]pub fn borrow_mut(&mut self) -> &mut T
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pub fn borrow_mut(&mut self) -> &mut T
[src]Mutably borrows from an owned value. Read more
impl<F> Match for F
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impl<F> Match for F
[src]fn matches<T>(&self) -> bool where
T: TryCastFrom<Self>,
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fn matches<T>(&self) -> bool where
T: TryCastFrom<Self>,
[src]Returns true
if self
can be cast into the target type T
.
impl<T> Same<T> for T
impl<T> Same<T> for T
type Output = T
type Output = T
Should always be Self
impl<T> ToOwned for T where
T: Clone,
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impl<T> ToOwned for T where
T: Clone,
[src]type Owned = T
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn to_owned(&self) -> T
[src]Creates owned data from borrowed data, usually by cloning. Read more
pub fn clone_into(&self, target: &mut T)
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pub fn clone_into(&self, target: &mut T)
[src]🔬 This is a nightly-only experimental API. (toowned_clone_into
)
recently added
Uses borrowed data to replace owned data, usually by cloning. Read more
impl<F, T> TryCastFrom<F> for T where
T: CastFrom<F>,
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impl<F, T> TryCastFrom<F> for T where
T: CastFrom<F>,
[src]pub fn can_cast_from(&F) -> bool
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pub fn can_cast_from(&F) -> bool
[src]Test if value
can be cast into Self
.
pub fn opt_cast_from(f: F) -> Option<T>
[src]
pub fn opt_cast_from(f: F) -> Option<T>
[src]Returns Some(Self)
if the source value can be cast into Self
, otherwise None
.
fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err> where
OnErr: FnOnce(&T) -> Err,
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fn try_cast_from<Err, OnErr>(value: T, on_err: OnErr) -> Result<Self, Err> where
OnErr: FnOnce(&T) -> Err,
[src]Returns Ok(Self)
if the source value can be cast into Self
, otherwise calls on_err
.
impl<F, T> TryCastInto<T> for F where
T: TryCastFrom<F>,
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impl<F, T> TryCastInto<T> for F where
T: TryCastFrom<F>,
[src]pub fn can_cast_into(&self) -> bool
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pub fn can_cast_into(&self) -> bool
[src]Test if self
can be cast into T
.
pub fn opt_cast_into(self) -> Option<T>
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pub fn opt_cast_into(self) -> Option<T>
[src]Returns Some(T)
if self
can be cast into T
, otherwise None
.
fn try_cast_into<Err, OnErr>(self, on_err: OnErr) -> Result<T, Err> where
OnErr: FnOnce(&Self) -> Err,
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fn try_cast_into<Err, OnErr>(self, on_err: OnErr) -> Result<T, Err> where
OnErr: FnOnce(&Self) -> Err,
[src]Returns Ok(T)
if self
can be cast into T
, otherwise calls on_err
.
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
impl<V, T> VZip<V> for T where
V: MultiLane<T>,