net.sf.farrago.namespace.mock
Class MedMockIterRel

java.lang.Object
  org.eigenbase.rel.AbstractRelNode
      org.eigenbase.rel.TableAccessRelBase
          net.sf.farrago.namespace.mock.MedMockIterRel

All Implemented Interfaces:

Cloneable, JavaRel, RelNode, RelStructuredTypeFlattener.SelfFlatteningRel

 class MedMockIterRel
extends TableAccessRelBase
implements JavaRel, RelStructuredTypeFlattener.SelfFlatteningRel

MedMockIterRel provides a mock implementation for TableAccessRel with CallingConvention.ITERATOR.

Version:

$Id: //open/dev/farrago/src/net/sf/farrago/namespace/mock/MedMockIterRel.java#18 $

Author:

John V. Sichi

Field Summary

private MedMockColumnSet

columnSet

Fields inherited from class org.eigenbase.rel.TableAccessRelBase

connection, table

Fields inherited from class org.eigenbase.rel.AbstractRelNode

digest, id, rowType, traits

Fields inherited from interface org.eigenbase.rel.RelNode

emptyArray

Fields inherited from interface org.eigenbase.rel.RelNode

emptyArray

Constructor Summary

MedMockIterRel(MedMockColumnSet columnSet, RelOptCluster cluster, RelOptConnection connection)

Method Summary

MedMockIterRel	clone() Clones this RelNode.
void	flattenRel(RelStructuredTypeFlattener flattener)
ParseTree	implement(JavaRelImplementor implementor) Creates a plan for this expression according to a calling convention.

Methods inherited from class org.eigenbase.rel.TableAccessRelBase

computeSelfCost, deriveRowType, explain, getCollationList, getConnection, getRows, getTable

Methods inherited from class org.eigenbase.rel.AbstractRelNode

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eigenbase.rel.RelNode

childrenAccept, collectVariablesSet, collectVariablesUsed, computeSelfCost, explain, getChildExps, getCluster, getCollationList, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getInputs, getOrCreateCorrelVariable, getQuery, getRelTypeName, getRows, getRowType, getTable, getTraits, getVariablesStopped, isAccessTo, isDistinct, isValid, onRegister, recomputeDigest, registerCorrelVariable, replaceInput, setCorrelVariable

Methods inherited from interface org.eigenbase.rel.RelNode

childrenAccept, collectVariablesSet, collectVariablesUsed, computeSelfCost, explain, getChildExps, getCluster, getCollationList, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getInputs, getOrCreateCorrelVariable, getQuery, getRelTypeName, getRows, getRowType, getTable, getTraits, getVariablesStopped, isAccessTo, isDistinct, isValid, onRegister, recomputeDigest, registerCorrelVariable, replaceInput, setCorrelVariable

Field Detail

columnSet

private MedMockColumnSet columnSet

Constructor Detail

MedMockIterRel

MedMockIterRel(MedMockColumnSet columnSet,
               RelOptCluster cluster,
               RelOptConnection connection)

Method Detail

implement

public ParseTree implement(JavaRelImplementor implementor)

Description copied from interface: JavaRel

Creates a plan for this expression according to a calling convention.

Specified by:

implement in interface JavaRel

Parameters:

implementor - implementor

clone

public MedMockIterRel 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

Overrides:

clone in class TableAccessRelBase

Returns:

a clone of this RelNode

flattenRel

public void flattenRel(RelStructuredTypeFlattener flattener)

Specified by:

flattenRel in interface RelStructuredTypeFlattener.SelfFlatteningRel