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

Interface RelationalExpressionWithChildren

All Superinterfaces:

Bindable, Correlated<RelationalExpression>, RelationalExpression

All Known Subinterfaces:

RecordQueryPlanWithChild, RecordQueryPlanWithChildren, TypeFilterExpression

All Known Implementing Classes:

LogicalDistinctExpression, LogicalFilterExpression, LogicalIntersectionExpression, LogicalSortExpression, LogicalTypeFilterExpression, LogicalUnorderedUnionExpression, MatchableSortExpression, RecordQueryFetchFromPartialRecordPlan, RecordQueryFilterPlan, RecordQueryInJoinPlan, RecordQueryInParameterJoinPlan, RecordQueryIntersectionPlan, RecordQueryInValuesJoinPlan, RecordQueryPredicateFilterPlan, RecordQueryScoreForRankPlan, RecordQueryTypeFilterPlan, RecordQueryUnionPlan, RecordQueryUnionPlanBase, RecordQueryUnorderedDistinctPlan, RecordQueryUnorderedPrimaryKeyDistinctPlan, RecordQueryUnorderedUnionPlan, SelectExpression

@API(EXPERIMENTAL)
public interface RelationalExpressionWithChildren
extends RelationalExpression

A parent interface for RelationalExpressions that have relational children (as opposed to non-relation children, such as QueryComponents).

Nested Class Summary

Nested classes/interfaces inherited from interface com.apple.foundationdb.record.query.plan.temp.Correlated

Correlated.BoundEquivalence

Nested classes/interfaces inherited from interface com.apple.foundationdb.record.query.plan.temp.RelationalExpression

RelationalExpression.CombineFunction<R,S>, RelationalExpression.CombinePredicate

Method Summary

Modifier and Type	Method	Description
default Set<CorrelationIdentifier>	getCorrelatedTo()	Returns the set of CorrelationIdentifiers this entity is correlated to.
Set<CorrelationIdentifier>	getCorrelatedToWithoutChildren()
int	getRelationalChildCount()
default RelationalExpressionWithChildren	rebase(AliasMap translationMap)	Rebases this and all other objects this objects is composed of using a given translation map.
RelationalExpressionWithChildren	rebaseWithRebasedQuantifiers(AliasMap translationMap, List<Quantifier> rebasedQuantifiers)

Methods inherited from interface com.apple.foundationdb.record.query.plan.temp.RelationalExpression

acceptPropertyVisitor, adjustMatch, bindIdentities, bindTo, canCorrelate, compensate, enumerateUnboundCorrelatedTo, equalsWithoutChildren, exactlySubsumedBy, findMatches, getQuantifiers, getResultValues, hashCodeWithoutChildren, hasIncompatibleBoundQuantifiers, hasUnboundQuantifiers, match, match, semanticEquals, semanticEquals, semanticHashCode, show, subsumedBy

Method Detail

getRelationalChildCount

int getRelationalChildCount()

getCorrelatedTo

@Nonnull
default Set<CorrelationIdentifier> getCorrelatedTo()

Description copied from interface: Correlated

Returns the set of CorrelationIdentifiers this entity is correlated to. This means that without a process that binds these correlations to values, the RelationalExpression (or others that implement this interface) cannot even in principle produce a meaningful result. As often times entities that implement this interface use composition and effectively describe trees or DAGs, this method should be the set union of the CorrelationIdentifiers this object is correlated to as well as all children, constituent parts, etc.

Specified by:

getCorrelatedTo in interface Correlated<RelationalExpression>

Returns:

the set of CorrelationIdentifiers this entity is correlated to

getCorrelatedToWithoutChildren

@Nonnull
Set<CorrelationIdentifier> getCorrelatedToWithoutChildren()

rebase

@Nonnull
default RelationalExpressionWithChildren rebase(@Nonnull
                                                AliasMap translationMap)

Description copied from interface: Correlated

Rebases this and all other objects this objects is composed of using a given translation map.

Specified by:

rebase in interface Correlated<RelationalExpression>

Parameters:

translationMap - a map defining a translation from CorrelationIdentifiers ids to CorrelationIdentifiers ids'. After the rebase, every correlation to an id contained ids that is contained or referred to directly or indirectly by this must have been transformed to use the mapped counterpart of id id' in ids'. IDs not contained in the translation map must remain unmodified by the rebase operation.

Returns:

a new entity that has been rebased

rebaseWithRebasedQuantifiers

@Nonnull
RelationalExpressionWithChildren rebaseWithRebasedQuantifiers(@Nonnull
                                                              AliasMap translationMap,
                                                              @Nonnull
                                                              List<Quantifier> rebasedQuantifiers)