Package org.apache.calcite.rel

Class RelValidityChecker

java.lang.Object

org.apache.calcite.rel.RelVisitor

org.apache.calcite.rel.RelValidityChecker

All Implemented Interfaces:

RelNode.Context

public class RelValidityChecker
extends RelVisitor
implements RelNode.Context

Visitor that checks that every RelNode in a tree is valid.

See Also:

• RelNode.isValid(Litmus, RelNode.Context)

Constructor Summary

Constructors

Constructor	Description
RelValidityChecker()

Method Summary

Modifier and Type	Method	Description
Set<CorrelationId>	correlationIds()
int	invalidCount()
void	visit(RelNode node, int ordinal, @Nullable RelNode parent)	Visits a node during a traversal.

Methods inherited from class org.apache.calcite.rel.RelVisitor

go, replaceRoot

Methods inherited from class java.lang.Object

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

Constructor Details

RelValidityChecker

public RelValidityChecker()

Method Details

correlationIds

public Set<CorrelationId> correlationIds()

Specified by:

correlationIds in interface RelNode.Context

visit

public void visit(RelNode node,
 int ordinal,
 @Nullable RelNode parent)

Description copied from class: RelVisitor

Visits a node during a traversal.

Overrides:

visit in class RelVisitor

Parameters:

node - Node to visit

ordinal - Ordinal of node within its parent

parent - Parent of the node, or null if it is the root of the traversal

invalidCount

public int invalidCount()