Package org.eclipse.rdf4j.query.algebra.evaluation.optimizer

package org.eclipse.rdf4j.query.algebra.evaluation.optimizer

Related Packages

Package	Description
org.eclipse.rdf4j.query.algebra.evaluation

Classes

Class	Description
BindingAssignerOptimizer	Assigns values to variables based on a supplied set of bindings.
BindingSetAssignmentInlinerOptimizer	Optimizes a query model by inlining BindingSetAssignment values where possible.
CompareOptimizer	A query optimizer that replaces Compare operators with SameTerms, if possible.
ConjunctiveConstraintSplitterOptimizer	Splits conjunctive constraints into seperate constraints.
ConstantOptimizer	A query optimizer that optimizes constant value expressions.
DisjunctiveConstraintOptimizer	A query optimizer that optimize disjunctive constraints on tuple expressions.
FilterOptimizer	Optimizes a query model by pushing Filters as far down in the model tree as possible.
IterativeEvaluationOptimizer
OrderLimitOptimizer	Moves the Order node above the Projection when variables are projected.
ParentReferenceChecker	Checks QueryModelNode.getParentNode() references that have become inconsistent with the actual algebra tree structure due to optimization operations.
ParentReferenceCleaner	Cleans up QueryModelNode.getParentNode() references that have become inconsistent with the actual algebra tree structure due to optimization operations.
ProjectionRemovalOptimizer	If a projection node in the algebra does not contribute or change the results it can be removed from the tree.
QueryJoinOptimizer	A query optimizer that re-orders nested Joins.
QueryModelNormalizerOptimizer	A query optimizer that (partially) normalizes query models to a canonical form.
RegexAsStringFunctionOptimizer	A query optimizer that replaces REGEX with FunctionCalls that are equivalent operators
SameTermFilterOptimizer	A query optimizer that embeds Filters with SameTerm operators in statement patterns as much as possible.
StandardQueryOptimizerPipeline	A standard pipeline with the default QueryOptimizers that will be used by StrictEvaluationStrategy and its subclasses, unless specifically overridden.
UnionScopeChangeOptimizer	Inspect Union clauses to check if scope change can be avoided (allowing injection of pre-bound vars into union arguments).