org.apache.calcite.plan

Class RelOptListener.RelEvent

java.lang.Object

java.util.EventObject

org.apache.calcite.plan.RelOptListener.RelEvent

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

RelOptListener.RelChosenEvent, RelOptListener.RelDiscardedEvent, RelOptListener.RelEquivalenceEvent, RelOptListener.RuleEvent

Enclosing interface:

RelOptListener

public abstract static class RelOptListener.RelEvent
extends EventObject

Event class for abstract event dealing with a relational expression. The source of an event is typically the RelOptPlanner which initiated it.

See Also:

Serialized Form

Field Summary

Fields inherited from class java.util.EventObject

source

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	RelEvent(Object eventSource, @Nullable RelNode rel)

Method Summary

Modifier and Type	Method and Description
@Nullable RelNode	getRel()

Methods inherited from class java.util.EventObject

getSource, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

RelEvent

protected RelEvent(Object eventSource,
                   @Nullable RelNode rel)

Method Detail

getRel

public @Nullable RelNode getRel()