Struct cassandra_cpp::AggregateMeta[−][src]

pub struct AggregateMeta(_);
Expand description

Metadata about a cassandra aggregate

Implementations

impl AggregateMeta[src]

pub fn fields_iter(&self) -> FieldIteratorⓘ

Notable traits for FieldIterator

impl Iterator for FieldIterator type Item = Field;
[src]

An iterator over the fields of an aggregate

pub fn get_name(&self) -> String[src]

Gets the name of the aggregate.

pub fn full_name(&self) -> String[src]

Gets the full name of the aggregate.

pub fn argument_count(&self) -> usize[src]

Gets the number of arguments this aggregate takes.

pub fn argument_type(&self, index: usize) -> ConstDataType[src]

Gets the aggregate’s argument type for the provided index.

pub fn return_type(&self) -> ConstDataType[src]

Gets the aggregate’s argument return type.

pub fn state_type(&self) -> ConstDataType[src]

Gets the aggregate’s argument state type.

pub fn state_func(&self) -> FunctionMeta[src]

Gets the function metadata for the aggregate’s state function.

pub fn final_func(&self) -> FunctionMeta[src]

Gets the function metadata for the aggregates’s final function.

pub fn init_cond(&self) -> Value[src]

Gets the initial condition value for the aggregate.

pub fn field_by_name(&self, name: &str) -> Option<Value>[src]

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

Trait Implementations

impl Debug for AggregateMeta[src]

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

Formats the value using the given formatter. Read more

Auto Trait Implementations

Blanket Implementations

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

pub fn type_id(&self) -> TypeId[src]

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

pub fn borrow(&self) -> &T[src]

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

pub fn borrow_mut(&mut self) -> &mut T[src]

Mutably borrows from an owned value. Read more

impl<T> From<T> for T[src]

pub fn from(t: T) -> T[src]

Performs the conversion.

impl<T, U> Into<U> for T where
    U: From<T>, [src]

pub fn into(self) -> U[src]

Performs the conversion.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]

Performs the conversion.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

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

The type returned in the event of a conversion error.

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]

Performs the conversion.

impl<T> SendSyncUnwindSafe for T where
    T: Send + Sync + UnwindSafe + ?Sized, [src]