Package com.apple.foundationdb.record.query.plan.temp.rules

A package containing the rules used by the planner.

Class Summary

Class	Description
AdjustMatchRule	A rule that attempts to improve an existing PartialMatch by absorbing an expression on the candidate side.
CombineFilterRule	A simple rule that combines two nested filter plans and combines them into a single filter plan with a conjunction of the two filters.
DataAccessRule	A rule that utilizes index matching information compiled by CascadesPlanner to create a logical expression for data access.
FlattenNestedAndPredicateRule	A simple rule that performs some basic Boolean normalization by flattening a nested AndPredicate into a single, wider AND.
FullUnorderedExpressionToScanPlanRule	A rule for implementing a FullUnorderedScanExpression as a RecordQueryScanPlan of the full primary key space.
ImplementDistinctRule	A rule that implements a distinct expression by adding a RecordQueryUnorderedPrimaryKeyDistinctPlan if necessary.
ImplementDistinctUnionRule	A rule that implements a distinct union of its (already implemented) children.
ImplementFilterRule	A rule that implements a logical filter around a RecordQueryPlan as a RecordQueryFilterPlan.
ImplementIndexScanRule	A rule that converts a logical index scan expression to a RecordQueryIndexPlan.
ImplementIntersectionRule	A rule that implements an intersection of its (already implemented) children.
ImplementPhysicalScanRule	A rule that converts a logical index scan expression to a RecordQueryScanPlan.
ImplementTypeFilterRule	A rule that implements a logical type filter on an (already implemented) RecordQueryPlan as a RecordQueryTypeFilterPlan.
ImplementUnorderedUnionRule	A rule that implements an unordered union of its (already implemented) children.
MatchIntermediateRule	Expression-based transformation rule that matches any non-leaf expression (called an intermediate expression) to a candidate expression in a MatchCandidate.
MatchIntermediateRule.PartialMatchWithQuantifier	Partial match with a quantifier pulled up along with the partial match during matching.
MatchLeafRule	Expression-based transformation rule that matches any leaf expression.
OrToUnorderedUnionRule	Convert a filter on an or expression into a plan on the union.
PushDistinctFilterBelowFilterRule	A rule that moves a RecordQueryUnorderedPrimaryKeyDistinctPlan below a RecordQueryFilterPlan.
PushTypeFilterBelowFilterRule	A rule that moves a RecordQueryTypeFilterPlan below a RecordQueryFilterPlan.
RemoveRedundantTypeFilterRule	A rule that eliminates logical type filters that are completely redundant; that is, when the child of the logical type filter is guaranteed to return records of types included in the filter.
RemoveSortRule	A rule that implements a sort expression by removing this expression if appropriate.