org.eigenbase.relopt.volcano
Class VolcanoPlannerTest.NoneSingleRel

java.lang.Object
  org.eigenbase.rel.AbstractRelNode
      org.eigenbase.rel.SingleRel
          org.eigenbase.relopt.volcano.VolcanoPlannerTest.TestSingleRel
              org.eigenbase.relopt.volcano.VolcanoPlannerTest.NoneSingleRel

All Implemented Interfaces:

Cloneable, RelNode

Enclosing class:

VolcanoPlannerTest

private static class VolcanoPlannerTest.NoneSingleRel
extends VolcanoPlannerTest.TestSingleRel

Field Summary

Fields inherited from class org.eigenbase.rel.AbstractRelNode

digest, id, rowType, traits

Fields inherited from interface org.eigenbase.rel.RelNode

emptyArray

Constructor Summary

protected

VolcanoPlannerTest.NoneSingleRel(RelOptCluster cluster, RelNode child)

Method Summary

VolcanoPlannerTest.NoneSingleRel

clone() Clones this RelNode.

Methods inherited from class org.eigenbase.relopt.volcano.VolcanoPlannerTest.TestSingleRel

computeSelfCost, deriveRowType

Methods inherited from class org.eigenbase.rel.SingleRel

childrenAccept, explain, getChild, getInputs, getRows, replaceInput

Methods inherited from class org.eigenbase.rel.AbstractRelNode

cloneTraits, collectVariablesSet, collectVariablesUsed, computeDigest, getChildExps, getCluster, getCollationList, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getOrCreateCorrelVariable, getQuery, getRelTypeName, getRowType, getTable, getTraits, getVariablesStopped, inheritTraitsFrom, isAccessTo, isDistinct, isValid, onRegister, recomputeDigest, register, registerCorrelVariable, setCorrelVariable, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

VolcanoPlannerTest.NoneSingleRel

protected VolcanoPlannerTest.NoneSingleRel(RelOptCluster cluster,
                                           RelNode child)

Method Detail

clone

public VolcanoPlannerTest.NoneSingleRel clone()

Description copied from interface: RelNode

Clones this RelNode.

Traits of the RelNode must be explicitly cloned, using AbstractRelNode.inheritTraitsFrom(AbstractRelNode), as the RelNode may have traits of which it has no knowledge. Example implementation:

     public MyRelNode clone()
     {
         MyRelNode clone = new MyRelNode(...);
         clone.inheritTraitsFrom(this);
         return clone;
     }
 

N.B.: This method must be overridden whenever an existing, concrete RelNode is extended. Otherwise, calling clone() will produce a differently typed RelNode, resulting in invalid or incorrect query plans.

Specified by:

clone in interface RelNode

Specified by:

clone in class AbstractRelNode

Returns:

a clone of this RelNode