Package se.liu.ida.hefquin.engine.queryproc.impl.poptimizer.cardinality

Interface VarSpecificCardinalityEstimation

All Known Implementing Classes:
VarSpecificCardinalityEstimationImpl
public interface VarSpecificCardinalityEstimation

  • Method Summary

    Modifier and Type
    Method
    Description
    CompletableFuture<Integer>
    initiateCardinalityEstimation(PhysicalPlan plan, org.apache.jena.sparql.core.Var v)
    Asynchronous method that initiates a process to estimate the the variable-specific cardinality of the result that will be produced by the given plan.

  • Method Details

    • initiateCardinalityEstimation

      CompletableFuture<Integer> initiateCardinalityEstimation(PhysicalPlan plan, org.apache.jena.sparql.core.Var v)
      Asynchronous method that initiates a process to estimate the the variable-specific cardinality of the result that will be produced by the given plan. The actual estimate can then be obtained by using the get() method of the returned CompletableFuture.