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

Class FilterVisitor

java.lang.Object

com.apple.foundationdb.record.query.plan.visitor.RecordQueryPlannerSubstitutionVisitor

com.apple.foundationdb.record.query.plan.visitor.FilterVisitor

public class FilterVisitor
extends RecordQueryPlannerSubstitutionVisitor

A substitution visitor that pushes a filter below a record fetch if all of the (non-repeated) field are available in a covering scan.

Field Summary

Fields inherited from class com.apple.foundationdb.record.query.plan.visitor.RecordQueryPlannerSubstitutionVisitor

recordMetadata

Constructor Summary

Constructors

Constructor	Description
FilterVisitor(RecordMetaData recordMetadata, PlannableIndexTypes indexTypes, KeyExpression commonPrimaryKey)

Method Summary

Modifier and Type	Method	Description
static boolean	findFilterReferencedFields(QueryComponent filter, Set<KeyExpression> filterFields)
static void	partitionFilters(List<QueryComponent> filters, AvailableFields availableFields, List<QueryComponent> indexFilters, List<QueryComponent> residualFilters, Set<KeyExpression> allReferencedFields)
RecordQueryPlan	postVisit(RecordQueryPlan recordQueryPlan)

Methods inherited from class com.apple.foundationdb.record.query.plan.visitor.RecordQueryPlannerSubstitutionVisitor

applyVisitors, availableFields, availableFields, removeIndexFetch, removeIndexFetch

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FilterVisitor

public FilterVisitor(@Nonnull
                     RecordMetaData recordMetadata,
                     @Nonnull
                     PlannableIndexTypes indexTypes,
                     @Nullable
                     KeyExpression commonPrimaryKey)

Method Detail

postVisit

@Nonnull
public RecordQueryPlan postVisit(@Nonnull
                                 RecordQueryPlan recordQueryPlan)

Specified by:

postVisit in class RecordQueryPlannerSubstitutionVisitor

partitionFilters

public static void partitionFilters(@Nonnull
                                    List<QueryComponent> filters,
                                    @Nonnull
                                    AvailableFields availableFields,
                                    @Nonnull
                                    List<QueryComponent> indexFilters,
                                    @Nonnull
                                    List<QueryComponent> residualFilters,
                                    @Nullable
                                    Set<KeyExpression> allReferencedFields)

findFilterReferencedFields

public static boolean findFilterReferencedFields(@Nonnull
                                                 QueryComponent filter,
                                                 @Nonnull
                                                 Set<KeyExpression> filterFields)