pub struct KeyspaceMeta<'a>(/* private fields */);
Expand description

A snapshot of the schema’s metadata.

Implementations§

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impl<'a> KeyspaceMeta<'a>

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pub fn aggregrates_iter(&self) -> AggregateIterator<'a>

Iterator over the aggregates in this keyspace

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pub fn fields_iter(&self) -> FieldIterator<'a>

Iterator over the field in this keyspace

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pub fn table_by_name(&self, name: &str) -> Option<TableMeta<'a>>

Gets the table metadata for the provided table name.

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pub fn user_type_by_name(&self, name: &str) -> Option<ConstDataType<'a>>

Gets the data type for the provided type name.

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pub fn get_function_by_name( &self, name: &str, arguments: Vec<&str> ) -> Option<FunctionMeta<'a>>

Gets the function metadata for the provided function name.

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pub fn aggregate_by_name( &self, name: &str, arguments: Vec<&str> ) -> Option<AggregateMeta<'a>>

Gets the aggregate metadata for the provided aggregate name.

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pub fn table_iter(&self) -> TableIterator<'a>

Iterator over the tables in this keyspaces

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pub fn function_iter(&self) -> FunctionIterator<'a>

Iterator over the functions in this keyspaces

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pub fn user_type_iter(&self) -> UserTypeIterator<'a>

Iterator over the UDTs in this keyspaces

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pub fn name(&self) -> String

Gets the name of the keyspace.

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pub fn field_by_name(&self, name: &str) -> Option<MetadataFieldValue<'a>>

Gets a metadata field for the provided name. Metadata fields allow direct access to the column data found in the underlying “keyspaces” metadata table.

Trait Implementations§

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impl<'a> Debug for KeyspaceMeta<'a>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'a> RefUnwindSafe for KeyspaceMeta<'a>

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impl<'a> !Send for KeyspaceMeta<'a>

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impl<'a> !Sync for KeyspaceMeta<'a>

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impl<'a> Unpin for KeyspaceMeta<'a>

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impl<'a> UnwindSafe for KeyspaceMeta<'a>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.