Package org.apache.calcite.plan

Class RelTraitPropagationVisitor

java.lang.Object

org.apache.calcite.rel.RelVisitor

org.apache.calcite.plan.RelTraitPropagationVisitor

@Deprecated
public class RelTraitPropagationVisitor
extends RelVisitor

Deprecated.

As of 1.19, if you need to perform certain assertions regarding a RelNode tree and the contained traits you are encouraged to implement your own RelVisitor or RelShuttle directly. The reasons for deprecating this class are the following:

• The contract (Javadoc and naming) and the behavior of the class are inconsistent.
• The class is no longer used by any other components of the framework.
• The class was used only for debugging purposes.

RelTraitPropagationVisitor traverses a RelNode and its unregistered children, making sure that each has a full complement of traits. When a RelNode is found to be missing one or more traits, they are copied from a RelTraitSet given during construction.

Constructor Summary

Constructors

Constructor	Description
RelTraitPropagationVisitor(RelOptPlanner planner, RelTraitSet baseTraits)	Deprecated.

Method Summary

Modifier and Type	Method	Description
void	visit(RelNode rel, int ordinal, @Nullable RelNode parent)	Deprecated. 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

RelTraitPropagationVisitor

public RelTraitPropagationVisitor(RelOptPlanner planner,
 RelTraitSet baseTraits)

Deprecated.

Method Details

visit

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

Deprecated.

Description copied from class: RelVisitor

Visits a node during a traversal.

Overrides:

visit in class RelVisitor

Parameters:

rel - 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