org.apache.calcite.plan

Class SubstitutionVisitor.Operand

java.lang.Object

org.apache.calcite.plan.SubstitutionVisitor.Operand

Direct Known Subclasses:

SubstitutionVisitor.AnyOperand, SubstitutionVisitor.InternalOperand, SubstitutionVisitor.QueryOperand, SubstitutionVisitor.TargetOperand

Enclosing class:

SubstitutionVisitor

protected abstract static class SubstitutionVisitor.Operand
extends Object

Operand to a SubstitutionVisitor.UnifyRule.

Field Summary

Fields

Modifier and Type	Field and Description
protected Class<? extends MutableRel>	clazz

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Operand(Class<? extends MutableRel> clazz)

Method Summary

Modifier and Type	Method and Description
boolean	isWeaker(SubstitutionVisitor visitor, MutableRel rel)
abstract boolean	matches(SubstitutionVisitor visitor, MutableRel rel)

Methods inherited from class java.lang.Object

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

Field Detail

clazz

protected final Class<? extends MutableRel> clazz

Constructor Detail

Operand

protected Operand(Class<? extends MutableRel> clazz)

Method Detail

matches

public abstract boolean matches(SubstitutionVisitor visitor,
                                MutableRel rel)

isWeaker

public boolean isWeaker(SubstitutionVisitor visitor,
                        MutableRel rel)