Package com.apple.foundationdb.record.query.plan.plans

Interface RecordQueryPlanWithNoChildren

All Superinterfaces:

Bindable, Correlated<RelationalExpression>, PlanHashable, PlannerGraphRewritable, QueryPlan<FDBQueriedRecord<Message>>, RecordQueryPlan, RelationalExpression

All Known Implementing Classes:

ComposedBitmapIndexQueryPlan, RecordQueryCoveringIndexPlan, RecordQueryIndexPlan, RecordQueryLoadByKeysPlan, RecordQueryScanPlan, RecordQueryTextIndexPlan

@API(EXPERIMENTAL)
public interface RecordQueryPlanWithNoChildren
extends RecordQueryPlan

A query plan that does not have any child plans.

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.PlanHashable

PlanHashable.PlanHashKind

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

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

Field Summary

Fields inherited from interface com.apple.foundationdb.record.query.plan.plans.QueryPlan

UNKNOWN_MAX_CARDINALITY

Method Summary

Modifier and Type	Method	Description
default List<RecordQueryPlan>	getChildren()	Returns the (zero or more) RecordQueryPlan children of this plan.
default List<? extends Quantifier>	getQuantifiers()	Return an iterator of references to the children of this planner expression.

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

getCorrelatedTo, rebase

Methods inherited from interface com.apple.foundationdb.record.PlanHashable

planHash, planHash

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

rewritePlannerGraph

Methods inherited from interface com.apple.foundationdb.record.query.plan.plans.QueryPlan

execute, execute, getComplexity, getUsedIndexes, hasFullRecordScan, hasIndexScan, hasLoadBykeys, hasRecordScan, isReverse, isStrictlySorted, logPlanStructure, maxCardinality, strictlySorted

Methods inherited from interface com.apple.foundationdb.record.query.plan.plans.RecordQueryPlan

accept, execute, execute, execute, execute, getAvailableFields, getQueryPlanChildren, structuralEquals, structuralEquals, structuralHashCode

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

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

Method Detail

getChildren

@Nonnull
default List<RecordQueryPlan> getChildren()

Description copied from interface: RecordQueryPlan

Returns the (zero or more) RecordQueryPlan children of this plan.

Warning: This part of the API is undergoing active development. At some point in the future, the return type of this method will change to allow it to return a list of generic QueryPlans. At current, every RecordQueryPlan can only have other RecordQueryPlans as children. However, this is not guaranteed to be the case in the future. This method has been marked as API.Status.UNSTABLE as of version 2.5.

Specified by:

getChildren in interface RecordQueryPlan

Returns:

the child plans

getQuantifiers

@Nonnull
default List<? extends Quantifier> getQuantifiers()

Description copied from interface: RelationalExpression

Return an iterator of references to the children of this planner expression. The iterators returned by different calls are guaranteed to be independent (i.e., advancing one will not advance another). However, they might point to the same object, as when Collections.emptyIterator() is returned. The returned iterator should be treated as an immutable object and may throw an exception if Iterator.remove() is called. The iterator must return its elements in a consistent order.

Specified by:

getQuantifiers in interface RelationalExpression

Returns:

an iterator of references to the children of this planner expression