Struct QueryContext 

pub struct QueryContext {
    pub timeout: Option<Duration>,
    pub limit: Option<u64>,
    pub optimization_level: u8,
    pub collect_stats: bool,
    pub params: HashMap<String, Value>,
}

Query execution context

Fields

timeout: Option<Duration>

Query timeout

limit: Option<u64>

Maximum results

optimization_level: u8

Optimization level (0 = none, 1 = basic, 2 = aggressive)

collect_stats: bool

Collect statistics

params: HashMap<String, Value>

Custom parameters

Implementations

impl QueryContext

pub fn new() -> QueryContext

Create default context

pub fn with_timeout(self, timeout: Duration) -> QueryContext

Set timeout

pub fn with_limit(self, limit: u64) -> QueryContext

Set limit

pub fn with_optimization(self, level: u8) -> QueryContext

Set optimization level

pub fn with_stats(self) -> QueryContext

Enable statistics collection

pub fn with_param(self, name: &str, value: Value) -> QueryContext

Add parameter

Trait Implementations

impl Clone for QueryContext

fn clone(&self) -> QueryContext

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for QueryContext

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

Formats the value using the given formatter.

impl Default for QueryContext

fn default() -> QueryContext

Returns the “default value” for a type.