Package 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 java.lang.Object

Operand to a SubstitutionVisitor.UnifyRule.

Field Summary

Fields

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

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	Operand(java.lang.Class<? extends MutableRel> clazz)

Method Summary

Modifier and Type	Method	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 java.lang.Class<? extends MutableRel> clazz

Constructor Detail

Operand

protected Operand(java.lang.Class<? extends MutableRel> clazz)

Method Detail

matches

public abstract boolean matches(SubstitutionVisitor visitor,
                                MutableRel rel)

isWeaker

public boolean isWeaker(SubstitutionVisitor visitor,
                        MutableRel rel)