Package io.prestosql.sql.planner

Class DesugarRowSubscriptRewriter

java.lang.Object

io.prestosql.sql.planner.DesugarRowSubscriptRewriter

public final class DesugarRowSubscriptRewriter
extends Object

Replaces subscript expression on Row with cast and dereference:

     ROW (1, 'a', 2) [2]
 

is transformed into:

     (CAST (ROW (1, 'a', 2) AS ROW (field_0 bigint, field_1 varchar(1), field_2 bigint))).field_1
 

Method Summary

Modifier and Type	Method	Description
static Expression	rewrite(Expression expression, Session session, TypeAnalyzer typeAnalyzer, SymbolAllocator symbolAllocator)
static Expression	rewrite(Expression expression, Map<NodeRef<Expression>,Type> expressionTypes)

Methods inherited from class java.lang.Object

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

Method Detail

rewrite

public static Expression rewrite(Expression expression,
                                 Session session,
                                 TypeAnalyzer typeAnalyzer,
                                 SymbolAllocator symbolAllocator)

rewrite

public static Expression rewrite(Expression expression,
                                 Map<NodeRef<Expression>,Type> expressionTypes)