org.apache.hadoop.hive.ql.plan
Class GroupByDesc

java.lang.Object
  org.apache.hadoop.hive.ql.plan.GroupByDesc

All Implemented Interfaces:

Serializable

public class GroupByDesc
extends Object
implements Serializable

GroupByDesc.

See Also:

Serialized Form

Nested Class Summary

static class

GroupByDesc.Mode Mode.

Constructor Summary

GroupByDesc()

GroupByDesc(GroupByDesc.Mode mode, ArrayList<String> outputColumnNames, ArrayList<ExprNodeDesc> keys, ArrayList<AggregationDesc> aggregators, boolean groupKeyNotReductionKey, boolean bucketGroup, float groupByMemoryUsage, float memoryThreshold)

GroupByDesc(GroupByDesc.Mode mode, ArrayList<String> outputColumnNames, ArrayList<ExprNodeDesc> keys, ArrayList<AggregationDesc> aggregators, boolean groupKeyNotReductionKey, float groupByMemoryUsage, float memoryThreshold)

Method Summary

ArrayList<AggregationDesc>	getAggregators()
boolean	getBucketGroup()
float	getGroupByMemoryUsage()
boolean	getGroupKeyNotReductionKey()
ArrayList<ExprNodeDesc>	getKeys()
float	getMemoryThreshold()
GroupByDesc.Mode	getMode()
String	getModeString()
ArrayList<String>	getOutputColumnNames()
boolean	isDistinctLike() Checks if this grouping is like distinct, which means that all non-distinct grouping columns behave like they were distinct - for example min and max operators.
void	setAggregators(ArrayList<AggregationDesc> aggregators)
void	setBucketGroup(boolean dataSorted)
void	setGroupByMemoryUsage(float groupByMemoryUsage)
void	setGroupKeyNotReductionKey(boolean groupKeyNotReductionKey)
void	setKeys(ArrayList<ExprNodeDesc> keys)
void	setMemoryThreshold(float memoryThreshold)
void	setMode(GroupByDesc.Mode mode)
void	setOutputColumnNames(ArrayList<String> outputColumnNames)

Methods inherited from class java.lang.Object

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

Constructor Detail

GroupByDesc

public GroupByDesc()

GroupByDesc

public GroupByDesc(GroupByDesc.Mode mode,
                   ArrayList<String> outputColumnNames,
                   ArrayList<ExprNodeDesc> keys,
                   ArrayList<AggregationDesc> aggregators,
                   boolean groupKeyNotReductionKey,
                   float groupByMemoryUsage,
                   float memoryThreshold)

GroupByDesc

public GroupByDesc(GroupByDesc.Mode mode,
                   ArrayList<String> outputColumnNames,
                   ArrayList<ExprNodeDesc> keys,
                   ArrayList<AggregationDesc> aggregators,
                   boolean groupKeyNotReductionKey,
                   boolean bucketGroup,
                   float groupByMemoryUsage,
                   float memoryThreshold)

Method Detail

getMode

public GroupByDesc.Mode getMode()

getModeString

public String getModeString()

setMode

public void setMode(GroupByDesc.Mode mode)

getKeys

public ArrayList<ExprNodeDesc> getKeys()

setKeys

public void setKeys(ArrayList<ExprNodeDesc> keys)

getOutputColumnNames

public ArrayList<String> getOutputColumnNames()

setOutputColumnNames

public void setOutputColumnNames(ArrayList<String> outputColumnNames)

getGroupByMemoryUsage

public float getGroupByMemoryUsage()

setGroupByMemoryUsage

public void setGroupByMemoryUsage(float groupByMemoryUsage)

getMemoryThreshold

public float getMemoryThreshold()

setMemoryThreshold

public void setMemoryThreshold(float memoryThreshold)

getAggregators

public ArrayList<AggregationDesc> getAggregators()

setAggregators

public void setAggregators(ArrayList<AggregationDesc> aggregators)

getGroupKeyNotReductionKey

public boolean getGroupKeyNotReductionKey()

setGroupKeyNotReductionKey

public void setGroupKeyNotReductionKey(boolean groupKeyNotReductionKey)

getBucketGroup

public boolean getBucketGroup()

setBucketGroup

public void setBucketGroup(boolean dataSorted)

isDistinctLike

public boolean isDistinctLike()

Checks if this grouping is like distinct, which means that all non-distinct grouping columns behave like they were distinct - for example min and max operators.