Struct parity_db::ColumnOptions

pub struct ColumnOptions {
    pub preimage: bool,
    pub uniform: bool,
    pub sizes: [u16; 15],
    pub ref_counted: bool,
}

Fields

preimage: bool

Indicates that the column value is the preimage of the key. This implies that a given value always has the same key. Enables some optimizations.

uniform: bool

Indicates that the keys are at least 32 bytes and the first 32 bytes have uniform distribution. Allows for skipping additional key hashing.

sizes: [u16; 15]

Value size tiers.

ref_counted: bool

Use referece counting for values.

Trait Implementations

impl Clone for ColumnOptions

fn clone(&self) -> ColumnOptions

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnOptions

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

Formats the value using the given formatter.

impl Default for ColumnOptions

fn default() -> ColumnOptions

Returns the “default value” for a type.