Package io.prestosql.sql.planner.optimizations

Class TableDeleteOptimizer

java.lang.Object

io.prestosql.sql.planner.optimizations.TableDeleteOptimizer

All Implemented Interfaces:

PlanOptimizer

public class TableDeleteOptimizer
extends Object
implements PlanOptimizer

Converts delete followed immediately by table scan to a special table-only delete node

Turn

     TableCommit - Delete - TableScanNode (no node allowed in between except Exchanges)
 

into

     TableDelete
 

Constructor Summary

Constructors

Constructor	Description
TableDeleteOptimizer(Metadata metadata)

Method Summary

Modifier and Type	Method	Description
PlanNode	optimize(PlanNode plan, Session session, TypeProvider types, SymbolAllocator symbolAllocator, PlanNodeIdAllocator idAllocator, WarningCollector warningCollector)

Methods inherited from class java.lang.Object

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

Constructor Detail

TableDeleteOptimizer

public TableDeleteOptimizer(Metadata metadata)

Method Detail

optimize

public PlanNode optimize(PlanNode plan,
                         Session session,
                         TypeProvider types,
                         SymbolAllocator symbolAllocator,
                         PlanNodeIdAllocator idAllocator,
                         WarningCollector warningCollector)

Specified by:

optimize in interface PlanOptimizer