org.apache.hadoop.hive.ql.plan

Class TableScanDesc

java.lang.Object

org.apache.hadoop.hive.ql.plan.AbstractOperatorDesc

org.apache.hadoop.hive.ql.plan.TableScanDesc

All Implemented Interfaces:

Serializable, Cloneable, OperatorDesc

public class TableScanDesc
extends AbstractOperatorDesc

Table Scan Descriptor Currently, data is only read from a base source as part of map-reduce framework. So, nothing is stored in the descriptor. But, more things will be added here as table scan is invoked as part of local work.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static String	FILTER_EXPR_CONF_STR
static String	FILTER_OBJECT_CONF_STR
static String	FILTER_TEXT_CONF_STR

Fields inherited from class org.apache.hadoop.hive.ql.plan.AbstractOperatorDesc

opProps, opTraits, statistics, vectorMode

Constructor Summary

Constructors

Constructor and Description
TableScanDesc()
TableScanDesc(String alias, List<VirtualColumn> vcs, Table tblMetadata)
TableScanDesc(String alias, Table tblMetadata)
TableScanDesc(Table tblMetadata)

Method Summary

Methods

Modifier and Type	Method and Description
void	addVirtualCols(List<VirtualColumn> virtualCols)
Object	clone()
String	getAlias()
Map<String,Integer>	getBucketFileNameMapping()
ExprNodeGenericFuncDesc	getFilterExpr()
String	getFilterExprString()
Serializable	getFilterObject()
boolean	getIsMetadataOnly()
int	getMaxStatsKeyPrefixLength()
List<Integer>	getNeededColumnIDs()
List<String>	getNeededColumns()
List<String>	getPartColumns()
List<String>	getReferencedColumns()
int	getRowLimit()
Integer	getRowLimitExplain()
String	getStatsAggPrefix()
Table	getTableMetadata()
TableSample	getTableSample()
List<VirtualColumn>	getVirtualCols()
boolean	hasVirtualCols()
boolean	isGatherStats()
boolean	isStatsReliable()
void	setAlias(String alias)
void	setBucketFileNameMapping(Map<String,Integer> bucketFileNameMapping)
void	setFilterExpr(ExprNodeGenericFuncDesc filterExpr)
void	setFilterObject(Serializable filterObject)
void	setGatherStats(boolean gatherStats)
void	setIsMetadataOnly(boolean metadata_only)
void	setMaxStatsKeyPrefixLength(int maxStatsKeyPrefixLength)
void	setNeededColumnIDs(List<Integer> neededColumnIDs)
void	setNeededColumns(List<String> neededColumns)
void	setPartColumns(List<String> partColumns)
void	setReferencedColumns(List<String> referencedColumns)
void	setRowLimit(int rowLimit)
void	setStatsAggPrefix(String k)
void	setStatsReliable(boolean statsReliable)
void	setTableSample(TableSample tableSample)
void	setVirtualCols(List<VirtualColumn> virtualCols)

Methods inherited from class org.apache.hadoop.hive.ql.plan.AbstractOperatorDesc

getOpProps, getStatistics, getTraits, getVectorMode, setOpProps, setStatistics, setTraits, setVectorMode

Methods inherited from class java.lang.Object

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

Field Detail

FILTER_EXPR_CONF_STR

public static final String FILTER_EXPR_CONF_STR

See Also:

Constant Field Values

FILTER_TEXT_CONF_STR

public static final String FILTER_TEXT_CONF_STR

See Also:

Constant Field Values

FILTER_OBJECT_CONF_STR

public static final String FILTER_OBJECT_CONF_STR

See Also:

Constant Field Values

Constructor Detail

TableScanDesc

public TableScanDesc()

TableScanDesc

public TableScanDesc(Table tblMetadata)

TableScanDesc

public TableScanDesc(String alias,
             Table tblMetadata)

TableScanDesc

public TableScanDesc(String alias,
             List<VirtualColumn> vcs,
             Table tblMetadata)

Method Detail

clone

public Object clone()

Specified by:

clone in interface OperatorDesc

Overrides:

clone in class AbstractOperatorDesc

getAlias

public String getAlias()

getFilterExprString

public String getFilterExprString()

getFilterExpr

public ExprNodeGenericFuncDesc getFilterExpr()

setFilterExpr

public void setFilterExpr(ExprNodeGenericFuncDesc filterExpr)

getFilterObject

public Serializable getFilterObject()

setFilterObject

public void setFilterObject(Serializable filterObject)

setNeededColumnIDs

public void setNeededColumnIDs(List<Integer> neededColumnIDs)

getNeededColumnIDs

public List<Integer> getNeededColumnIDs()

setNeededColumns

public void setNeededColumns(List<String> neededColumns)

getNeededColumns

public List<String> getNeededColumns()

setReferencedColumns

public void setReferencedColumns(List<String> referencedColumns)

getReferencedColumns

public List<String> getReferencedColumns()

setAlias

public void setAlias(String alias)

setPartColumns

public void setPartColumns(List<String> partColumns)

getPartColumns

public List<String> getPartColumns()

setGatherStats

public void setGatherStats(boolean gatherStats)

isGatherStats

public boolean isGatherStats()

getVirtualCols

public List<VirtualColumn> getVirtualCols()

setVirtualCols

public void setVirtualCols(List<VirtualColumn> virtualCols)

addVirtualCols

public void addVirtualCols(List<VirtualColumn> virtualCols)

hasVirtualCols

public boolean hasVirtualCols()

setStatsAggPrefix

public void setStatsAggPrefix(String k)

getStatsAggPrefix

public String getStatsAggPrefix()

isStatsReliable

public boolean isStatsReliable()

setStatsReliable

public void setStatsReliable(boolean statsReliable)

getMaxStatsKeyPrefixLength

public int getMaxStatsKeyPrefixLength()

setMaxStatsKeyPrefixLength

public void setMaxStatsKeyPrefixLength(int maxStatsKeyPrefixLength)

setRowLimit

public void setRowLimit(int rowLimit)

getRowLimit

public int getRowLimit()

getRowLimitExplain

public Integer getRowLimitExplain()

getBucketFileNameMapping

public Map<String,Integer> getBucketFileNameMapping()

setBucketFileNameMapping

public void setBucketFileNameMapping(Map<String,Integer> bucketFileNameMapping)

setIsMetadataOnly

public void setIsMetadataOnly(boolean metadata_only)

getIsMetadataOnly

public boolean getIsMetadataOnly()

getTableMetadata

public Table getTableMetadata()

getTableSample

public TableSample getTableSample()

setTableSample

public void setTableSample(TableSample tableSample)