Struct SerializedValues

pub struct SerializedValues { /* private fields */ }

A buffer containing already serialized values.

It is not aware of the types of contained values, it is basically a byte buffer in the format expected by the CQL protocol. Usually there is no need for a user of a driver to use this struct, it is mostly internal. The exception are APIs like ClusterData::compute_token / ClusterData::get_endpoints. Allows adding new values to the buffer and iterating over the content.

Implementations

impl SerializedValues

pub const EMPTY: &'static SerializedValues

A const empty instance, useful for taking references

pub const fn new() -> Self

Constructs a new, empty SerializedValues.

pub fn from_serializable<T: SerializeRow>( ctx: &RowSerializationContext<'_>, row: &T, ) -> Result<Self, SerializationError>

Constructs SerializedValues from given SerializeRow object.

pub fn from_closure<F, R>(f: F) -> Result<(Self, R), SerializationError>

where F: FnOnce(&mut RowWriter<'_>) -> Result<R, SerializationError>,

Constructs SerializedValues via given closure.

pub fn is_empty(&self) -> bool

Returns true if the row contains no elements.

pub fn iter(&self) -> impl Iterator<Item = RawValue<'_>>

Returns an iterator over the values serialized into the object so far.

pub fn element_count(&self) -> u16

Returns the number of values written so far.

pub fn buffer_size(&self) -> usize

Returns the total serialized size of the values written so far.

pub fn add_value<T: SerializeCql>( &mut self, val: &T, typ: &ColumnType, ) -> Result<(), SerializationError>

Serializes value and appends it to the list

Trait Implementations

impl Clone for SerializedValues

fn clone(&self) -> SerializedValues

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SerializedValues

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

Formats the value using the given formatter.

impl Default for SerializedValues

fn default() -> Self

Returns the “default value” for a type.

impl Ord for SerializedValues

fn cmp(&self, other: &SerializedValues) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for SerializedValues

fn eq(&self, other: &SerializedValues) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for SerializedValues

fn partial_cmp(&self, other: &SerializedValues) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Eq for SerializedValues

impl StructuralPartialEq for SerializedValues