io.prestosql.sql.planner.optimizations

Class PropertyDerivations

java.lang.Object

io.prestosql.sql.planner.optimizations.PropertyDerivations

public class PropertyDerivations
extends Object

Method Summary

Modifier and Type	Method and Description
static ActualProperties	deriveProperties(PlanNode node, List<ActualProperties> inputProperties, Metadata metadata, Session session, TypeProvider types, TypeAnalyzer typeAnalyzer)
static ActualProperties	derivePropertiesRecursively(PlanNode node, Metadata metadata, Session session, TypeProvider types, TypeAnalyzer typeAnalyzer)
static Optional<Symbol>	filterIfMissing(Collection<Symbol> columns, Symbol column)
static Optional<Symbol>	filterOrRewrite(Collection<Symbol> columns, Collection<JoinNode.EquiJoinClause> equalities, Symbol column)
static ActualProperties	streamBackdoorDeriveProperties(PlanNode node, List<ActualProperties> inputProperties, Metadata metadata, Session session, TypeProvider types, TypeAnalyzer typeAnalyzer)

Methods inherited from class java.lang.Object

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

Method Detail

derivePropertiesRecursively

public static ActualProperties derivePropertiesRecursively(PlanNode node,
                                                           Metadata metadata,
                                                           Session session,
                                                           TypeProvider types,
                                                           TypeAnalyzer typeAnalyzer)

deriveProperties

public static ActualProperties deriveProperties(PlanNode node,
                                                List<ActualProperties> inputProperties,
                                                Metadata metadata,
                                                Session session,
                                                TypeProvider types,
                                                TypeAnalyzer typeAnalyzer)

streamBackdoorDeriveProperties

public static ActualProperties streamBackdoorDeriveProperties(PlanNode node,
                                                              List<ActualProperties> inputProperties,
                                                              Metadata metadata,
                                                              Session session,
                                                              TypeProvider types,
                                                              TypeAnalyzer typeAnalyzer)

filterIfMissing

public static Optional<Symbol> filterIfMissing(Collection<Symbol> columns,
                                               Symbol column)

filterOrRewrite

public static Optional<Symbol> filterOrRewrite(Collection<Symbol> columns,
                                               Collection<JoinNode.EquiJoinClause> equalities,
                                               Symbol column)