Package org.eclipse.rdf4j.sail.federation.optimizers

Class Summary

Class	Description
EmptyPatternOptimizer	Remove StatementPatterns that have no statements.
EvaluationStatistics	Supplies various query model statistics to the query engine/optimizer.
EvaluationStatistics.CardinalityCalculator
FederationJoinOptimizer	Search for Join, LeftJoin, and Union arguments that can be evaluated in a single member.
OwnedTupleExprPruner	Remove redundant OwnedTupleExpr.
PrepareOwnedTupleExpr	Remove redundant OwnedTupleExpr.
QueryModelPruner	A query optimizer that prunes query model trees by removing superfluous parts and/or by reducing complex parts with simpler parts.
QueryMultiJoinOptimizer	A query optimizer that re-orders nested Joins.