io.prestosql.sql.planner

Class SymbolsExtractor

java.lang.Object

io.prestosql.sql.planner.SymbolsExtractor

public final class SymbolsExtractor
extends Object

Method Summary

Modifier and Type	Method and Description
static List<Symbol>	extractAll(Expression expression)
static Set<QualifiedName>	extractNames(Expression expression, Set<NodeRef<Expression>> columnReferences)
static Set<Symbol>	extractOutputSymbols(PlanNode planNode)
static Set<Symbol>	extractOutputSymbols(PlanNode planNode, Lookup lookup)
static Set<Symbol>	extractUnique(Expression expression)
static Set<Symbol>	extractUnique(Iterable<? extends Expression> expressions)
static Set<Symbol>	extractUnique(PlanNode node)
static Set<Symbol>	extractUnique(PlanNode node, Lookup lookup)
static Set<Symbol>	extractUniqueNonRecursive(PlanNode node)

Methods inherited from class java.lang.Object

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

Method Detail

extractUnique

public static Set<Symbol> extractUnique(PlanNode node)

extractUniqueNonRecursive

public static Set<Symbol> extractUniqueNonRecursive(PlanNode node)

extractUnique

public static Set<Symbol> extractUnique(PlanNode node,
                                        Lookup lookup)

extractUnique

public static Set<Symbol> extractUnique(Expression expression)

extractUnique

public static Set<Symbol> extractUnique(Iterable<? extends Expression> expressions)

extractAll

public static List<Symbol> extractAll(Expression expression)

extractNames

public static Set<QualifiedName> extractNames(Expression expression,
                                              Set<NodeRef<Expression>> columnReferences)

extractOutputSymbols

public static Set<Symbol> extractOutputSymbols(PlanNode planNode)

extractOutputSymbols

public static Set<Symbol> extractOutputSymbols(PlanNode planNode,
                                               Lookup lookup)