Struct PartitionKey 

pub struct PartitionKey {
    pub columns: Vec<(String, Value)>,
}

Partition key with multi-column support

Stores the partition key as a list of (column name, value) pairs. The order must match the schema’s partition key definition.

Fields

columns: Vec<(String, Value)>

Column name and value pairs (in schema order)

Implementations

impl PartitionKey

pub fn new(columns: Vec<(String, Value)>) -> Self

Create a new partition key

pub fn single(column: impl Into<String>, value: Value) -> Self

Create a partition key from a single column

pub fn to_bytes(&self, schema: &TableSchema) -> Result<Vec<u8>>

Serialize partition key to bytes according to Cassandra’s on-disk encoding.

Single-component keys are written as raw value bytes. Multi-component keys use [len][value][0x00] per component, including a trailing 0x00 after the final component.

pub fn to_decorated_key(&self, schema: &TableSchema) -> Result<DecoratedKey>

Convert to DecoratedKey (token + raw bytes)

pub fn from_bytes(data: &[u8], schema: &TableSchema) -> Result<Self>

Deserialize partition key from raw bytes (inverse of to_bytes)

Single-component keys are raw value bytes. Multi-component keys use [len:u16 BE][value bytes][0x00] per component.

Trait Implementations

impl Clone for PartitionKey

fn clone(&self) -> PartitionKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PartitionKey

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for PartitionKey

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for PartitionKey

fn eq(&self, other: &PartitionKey) -> 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 Serialize for PartitionKey

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for PartitionKey