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PhysicalOptimizerContext

datafusion_session::physical_optimizer

Trait PhysicalOptimizerContext 

Source 
pub trait PhysicalOptimizerContext: Send + Sync {
    // Required method
    fn config_options(&self) -> &ConfigOptions;

    // Provided method
    fn statistics_registry(&self) -> Option<&StatisticsRegistry> { ... }
}
Expand description

Context available to physical optimizer rules.

This trait provides access to configuration options and an optional statistics registry for enhanced statistics lookup.

Required Methods§

Source

fn config_options(&self) -> &ConfigOptions

Returns the configuration options.

Provided Methods§

Source

fn statistics_registry(&self) -> Option<&StatisticsRegistry>

Returns the statistics registry for enhanced statistics lookup.

Returns None if no registry is configured, in which case rules should fall back to using ExecutionPlan::partition_statistics.

Dyn Compatibility§

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors§