org.apache.hadoop.hive.ql.optimizer.optiq.reloperators
Class HiveTableScanRel

java.lang.Object
  org.eigenbase.rel.AbstractRelNode
      org.eigenbase.rel.TableAccessRelBase
          org.apache.hadoop.hive.ql.optimizer.optiq.reloperators.HiveTableScanRel

All Implemented Interfaces:

Cloneable, HiveRel, org.eigenbase.rel.RelNode, org.eigenbase.relopt.RelOptNode

public class HiveTableScanRel
extends org.eigenbase.rel.TableAccessRelBase
implements HiveRel

Relational expression representing a scan of a HiveDB collection.

Additional operations might be applied, using the "find" or "aggregate" methods.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.hadoop.hive.ql.optimizer.optiq.reloperators.HiveRel

HiveRel.Implementor

Field Summary

Fields inherited from interface org.apache.hadoop.hive.ql.optimizer.optiq.reloperators.HiveRel

CONVENTION

Constructor Summary

HiveTableScanRel(org.eigenbase.relopt.RelOptCluster cluster, org.eigenbase.relopt.RelTraitSet traitSet, RelOptHiveTable table, org.eigenbase.reltype.RelDataType rowtype)
Creates a HiveTableScan.

Method Summary

org.eigenbase.relopt.RelOptCost	computeSelfCost(org.eigenbase.relopt.RelOptPlanner planner)
org.eigenbase.rel.RelNode	copy(org.eigenbase.relopt.RelTraitSet traitSet, List<org.eigenbase.rel.RelNode> inputs)
List<ColStatistics>	getColStat(List<Integer> projIndxLst)
double	getRows()
void	implement(HiveRel.Implementor implementor)
void	register(org.eigenbase.relopt.RelOptPlanner planner)

Methods inherited from class org.eigenbase.rel.TableAccessRelBase

accept, deriveRowType, explainTerms, getCollationList, getTable, isKey, project

Methods inherited from class org.eigenbase.rel.AbstractRelNode

childrenAccept, collectVariablesSet, collectVariablesUsed, explain, getChildExps, getCluster, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getInputs, getOrCreateCorrelVariable, getQuery, getRelTypeName, getRowType, getTraitSet, getVariablesStopped, isDistinct, isValid, metadata, onRegister, recomputeDigest, registerCorrelVariable, replaceInput, setCorrelVariable, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eigenbase.rel.RelNode

accept, childrenAccept, collectVariablesSet, collectVariablesUsed, explain, getChildExps, getCollationList, getConvention, getCorrelVariable, getExpectedInputRowType, getInput, getInputs, getOrCreateCorrelVariable, getQuery, getRelTypeName, getRowType, getTable, getVariablesStopped, isDistinct, isKey, isValid, metadata, onRegister, recomputeDigest, registerCorrelVariable, replaceInput, setCorrelVariable

Methods inherited from interface org.eigenbase.relopt.RelOptNode

getCluster, getDescription, getDigest, getId, getTraitSet

Constructor Detail

HiveTableScanRel

public HiveTableScanRel(org.eigenbase.relopt.RelOptCluster cluster,
                        org.eigenbase.relopt.RelTraitSet traitSet,
                        RelOptHiveTable table,
                        org.eigenbase.reltype.RelDataType rowtype)

Creates a HiveTableScan.

Parameters:

cluster - Cluster

traitSet - Traits

table - Table

table - HiveDB table

Method Detail

copy

public org.eigenbase.rel.RelNode copy(org.eigenbase.relopt.RelTraitSet traitSet,
                                      List<org.eigenbase.rel.RelNode> inputs)

Specified by:

copy in interface org.eigenbase.rel.RelNode

Overrides:

copy in class org.eigenbase.rel.AbstractRelNode

computeSelfCost

public org.eigenbase.relopt.RelOptCost computeSelfCost(org.eigenbase.relopt.RelOptPlanner planner)

Specified by:

computeSelfCost in interface org.eigenbase.rel.RelNode

Overrides:

computeSelfCost in class org.eigenbase.rel.TableAccessRelBase

register

public void register(org.eigenbase.relopt.RelOptPlanner planner)

Specified by:

register in interface org.eigenbase.rel.RelNode

Overrides:

register in class org.eigenbase.rel.AbstractRelNode

implement

public void implement(HiveRel.Implementor implementor)

Specified by:

implement in interface HiveRel

getRows

public double getRows()

Specified by:

getRows in interface org.eigenbase.rel.RelNode

Overrides:

getRows in class org.eigenbase.rel.TableAccessRelBase

getColStat

public List<ColStatistics> getColStat(List<Integer> projIndxLst)