Struct SimplifySparqlExpressionsRule 

pub struct SimplifySparqlExpressionsRule;

An optimizer rule that tries to optimize SPARQL expressions.

Currently, the following transformations are implemented:

• IS_COMPATIBLE(A, B) => A = B, if A and B are not nullable
• EFFECTIVE_BOOLEAN_VALUE(BOOLEAN_AS_TERM(X)) -> X

Implementations

impl SimplifySparqlExpressionsRule

pub fn new() -> SimplifySparqlExpressionsRule

Creates a new SimplifySparqlExpressionsRule.

Trait Implementations

impl Debug for SimplifySparqlExpressionsRule

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

Formats the value using the given formatter.

impl Default for SimplifySparqlExpressionsRule

fn default() -> SimplifySparqlExpressionsRule

Returns the “default value” for a type.

impl OptimizerRule for SimplifySparqlExpressionsRule

fn name(&self) -> &str

A human readable name for this optimizer rule

fn apply_order(&self) -> Option<ApplyOrder>

How should the rule be applied by the optimizer? See comments on ApplyOrder for details.

fn rewrite( &self, plan: LogicalPlan, _config: &dyn OptimizerConfig, ) -> Result<Transformed<LogicalPlan>, DataFusionError>

Try to rewrite plan to an optimized form, returning Transformed::yes if the plan was rewritten and Transformed::no if it was not.

fn supports_rewrite(&self) -> bool

👎Deprecated since 47.0.0: This method is no longer used

Does this rule support rewriting owned plans (rather than by reference)?