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

java.lang.Object
  org.eigenbase.rel.AbstractRelNode
      org.eigenbase.rel.SingleRel
          org.eigenbase.rel.ProjectRelBase
              org.apache.hadoop.hive.ql.optimizer.optiq.reloperators.HiveProjectRel

All Implemented Interfaces:

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

public class HiveProjectRel
extends org.eigenbase.rel.ProjectRelBase
implements HiveRel

Nested Class Summary

Nested classes/interfaces inherited from class org.eigenbase.rel.ProjectRelBase

org.eigenbase.rel.ProjectRelBase.Flags

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

HiveRel.Implementor

Field Summary

static org.eigenbase.rel.RelFactories.ProjectFactory

DEFAULT_PROJECT_FACTORY

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

CONVENTION

Constructor Summary

HiveProjectRel(org.eigenbase.relopt.RelOptCluster cluster, org.eigenbase.relopt.RelTraitSet traitSet, org.eigenbase.rel.RelNode child, List<org.eigenbase.rex.RexNode> exps, org.eigenbase.reltype.RelDataType rowType, int flags)
Creates a HiveProjectRel.

Method Summary

org.eigenbase.relopt.RelOptCost	computeSelfCost(org.eigenbase.relopt.RelOptPlanner planner)
org.eigenbase.rel.ProjectRelBase	copy(org.eigenbase.relopt.RelTraitSet traitSet, org.eigenbase.rel.RelNode input, List<org.eigenbase.rex.RexNode> exps, org.eigenbase.reltype.RelDataType rowType)
static HiveProjectRel	create(org.eigenbase.rel.RelNode child, List<org.eigenbase.rex.RexNode> exps, List<String> fieldNames) Creates a HiveProjectRel with no sort keys.
static HiveProjectRel	create(org.eigenbase.relopt.RelOptCluster cluster, org.eigenbase.rel.RelNode child, List<org.eigenbase.rex.RexNode> exps, org.eigenbase.reltype.RelDataType rowType, List<org.eigenbase.rel.RelCollation> collationList) Creates a HiveProjectRel.
List<Integer>	getVirtualCols()
void	implement(HiveRel.Implementor implementor)

Methods inherited from class org.eigenbase.rel.ProjectRelBase

copy, explainTerms, getChildExps, getCollationList, getFlags, getNamedProjects, getProjects, isBoxed, isValid

Methods inherited from class org.eigenbase.rel.SingleRel

childrenAccept, getChild, getInputs, getRows, replaceInput

Methods inherited from class org.eigenbase.rel.AbstractRelNode

accept, collectVariablesSet, collectVariablesUsed, explain, getCluster, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getOrCreateCorrelVariable, getQuery, getRelTypeName, getRowType, getTable, getTraitSet, getVariablesStopped, isDistinct, isKey, metadata, onRegister, recomputeDigest, register, registerCorrelVariable, 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, copy, explain, getChildExps, getCollationList, getConvention, getCorrelVariable, getExpectedInputRowType, getInput, getInputs, getOrCreateCorrelVariable, getQuery, getRelTypeName, getRows, getRowType, getTable, getVariablesStopped, isDistinct, isKey, isValid, metadata, onRegister, recomputeDigest, register, registerCorrelVariable, replaceInput, setCorrelVariable

Methods inherited from interface org.eigenbase.relopt.RelOptNode

getCluster, getDescription, getDigest, getId, getTraitSet

Field Detail

DEFAULT_PROJECT_FACTORY

public static final org.eigenbase.rel.RelFactories.ProjectFactory DEFAULT_PROJECT_FACTORY

Constructor Detail

HiveProjectRel

public HiveProjectRel(org.eigenbase.relopt.RelOptCluster cluster,
                      org.eigenbase.relopt.RelTraitSet traitSet,
                      org.eigenbase.rel.RelNode child,
                      List<org.eigenbase.rex.RexNode> exps,
                      org.eigenbase.reltype.RelDataType rowType,
                      int flags)

Creates a HiveProjectRel.

Parameters:

cluster - Cluster this relational expression belongs to

child - input relational expression

exps - List of expressions for the input columns

rowType - output row type

flags - values as in ProjectRelBase.Flags

Method Detail

create

public static HiveProjectRel create(org.eigenbase.rel.RelNode child,
                                    List<org.eigenbase.rex.RexNode> exps,
                                    List<String> fieldNames)

Creates a HiveProjectRel with no sort keys.

Parameters:

child - input relational expression

exps - set of expressions for the input columns

fieldNames - aliases of the expressions

create

public static HiveProjectRel create(org.eigenbase.relopt.RelOptCluster cluster,
                                    org.eigenbase.rel.RelNode child,
                                    List<org.eigenbase.rex.RexNode> exps,
                                    org.eigenbase.reltype.RelDataType rowType,
                                    List<org.eigenbase.rel.RelCollation> collationList)

Creates a HiveProjectRel.

copy

public org.eigenbase.rel.ProjectRelBase copy(org.eigenbase.relopt.RelTraitSet traitSet,
                                             org.eigenbase.rel.RelNode input,
                                             List<org.eigenbase.rex.RexNode> exps,
                                             org.eigenbase.reltype.RelDataType rowType)

Specified by:

copy in class org.eigenbase.rel.ProjectRelBase

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.ProjectRelBase

implement

public void implement(HiveRel.Implementor implementor)

Specified by:

implement in interface HiveRel

getVirtualCols

public List<Integer> getVirtualCols()