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

static String	FILTER_EXPR_CONF_STR
static String	FILTER_TEXT_CONF_STR

Constructor Summary

TableScanDesc()

TableScanDesc(String alias)

TableScanDesc(String alias, List<VirtualColumn> vcs)

Method Summary

void	addVirtualCols(List<VirtualColumn> virtualCols)
Object	clone()
String	getAlias()
Map<String,Integer>	getBucketFileNameMapping()
ExprNodeGenericFuncDesc	getFilterExpr()
String	getFilterExprString()
boolean	getIsMetadataOnly()
int	getMaxStatsKeyPrefixLength()
List<String>	getPartColumns()
int	getRowLimit()
Integer	getRowLimitExplain()
String	getStatsAggPrefix()
List<VirtualColumn>	getVirtualCols()
boolean	hasVirtualCols()
boolean	isGatherStats()
boolean	isStatsReliable()
void	setAlias(String alias)
void	setBucketFileNameMapping(Map<String,Integer> bucketFileNameMapping)
void	setFilterExpr(ExprNodeGenericFuncDesc filterExpr)
void	setGatherStats(boolean gatherStats)
void	setIsMetadataOnly(boolean metadata_only)
void	setMaxStatsKeyPrefixLength(int maxStatsKeyPrefixLength)
void	setPartColumns(List<String> partColumns)
void	setRowLimit(int rowLimit)
void	setStatsAggPrefix(String k)
void	setStatsReliable(boolean statsReliable)
void	setVirtualCols(List<VirtualColumn> virtualCols)

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

getOpTraits, getStatistics, setOpTraits, setStatistics, setVectorMode

Methods inherited from class java.lang.Object

equals, 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

Constructor Detail

TableScanDesc

public TableScanDesc()

TableScanDesc

public TableScanDesc(String alias)

TableScanDesc

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

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)

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()