Struct ColumnMeta

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pub struct ColumnMeta(/* private fields */);
Expand description

Column metadata

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impl ColumnMeta

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pub fn field_iter(&mut self) -> FieldIterator

returns an iterator over the fields of this column

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pub fn name(&self) -> String

Gets the name of the column.

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pub fn get_type(&self) -> _CassColumnType

Gets the type of the column.

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pub fn data_type(&self) -> ConstDataType

Gets the data type of the column.

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

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

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impl Debug for ColumnMeta

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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<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

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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.