Package org.apache.wayang.core.optimizer
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Class Summary Class Description AggregateOptimizationContext ThisOptimizationContext
implementation aggregates severalOptimizationContext
s and exposes theirOptimizationContext.OperatorContext
in an aggregated manner.DefaultOptimizationContext This implementation ofOptimizationContext
represents a direct mapping fromOptimizationContext.OperatorContext
to executions of the respectiveOperator
s.OptimizationContext Manages contextual information required during the optimization of aWayangPlan
.OptimizationUtils Utility methods for the optimization process.ProbabilisticDoubleInterval An value representation that is capable of expressing uncertainty.ProbabilisticIntervalEstimate An estimate that is capable of expressing uncertainty.SanityChecker This class checks aWayangPlan
for several sanity criteria:Subplan
s must only be used as top-levelOperator
ofOperatorAlternative.Alternative
Subplan
s must contain more than oneOperator