org.apache.drill.exec.physical.base

Class AbstractDbSubScan

java.lang.Object

org.apache.drill.exec.physical.base.AbstractBase

org.apache.drill.exec.physical.base.AbstractSubScan

org.apache.drill.exec.physical.base.AbstractDbSubScan

All Implemented Interfaces:

Iterable<PhysicalOperator>, GraphValue<PhysicalOperator>, DbSubScan, FragmentLeaf, Leaf, PhysicalOperator, Scan, SubScan

Direct Known Subclasses:

MapRDBSubScan

public abstract class AbstractDbSubScan
extends AbstractSubScan
implements DbSubScan

Field Summary

Fields inherited from class org.apache.drill.exec.physical.base.AbstractBase

INIT_ALLOCATION, initialAllocation, MAX_ALLOCATION, maxAllocation, userName

Constructor Summary

Constructors

Constructor and Description
AbstractDbSubScan(String userName)

Method Summary

Modifier and Type	Method and Description
void	addJoinForRestrictedSubScan(RowKeyJoin batch) For a restricted sub-scan, this method allows associating a rowkey join instance.
boolean	isRestrictedSubScan() Whether this subscan is a restricted (skip) subscan

Methods inherited from class org.apache.drill.exec.physical.base.AbstractSubScan

accept, accept, getNewWithChildren, getSVMode, isExecutable, iterator

Methods inherited from class org.apache.drill.exec.physical.base.AbstractBase

getCost, getInitialAllocation, getMaxAllocation, getOperatorId, getUserName, isBufferedOperator, setCost, setMaxAllocation, setOperatorId

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.drill.exec.physical.base.PhysicalOperator

accept, getCost, getInitialAllocation, getMaxAllocation, getNewWithChildren, getOperatorId, getOperatorType, getSVMode, getUserName, isBufferedOperator, isExecutable, setCost, setMaxAllocation, setOperatorId

Methods inherited from interface org.apache.drill.common.graph.GraphValue

accept

Methods inherited from interface java.lang.Iterable

forEach, iterator, spliterator

Constructor Detail

AbstractDbSubScan

public AbstractDbSubScan(String userName)

Method Detail

isRestrictedSubScan

public boolean isRestrictedSubScan()

Description copied from interface: DbSubScan

Whether this subscan is a restricted (skip) subscan

Specified by:

isRestrictedSubScan in interface DbSubScan

Returns:

true if this subscan is a restricted subscan, false otherwise

addJoinForRestrictedSubScan

public void addJoinForRestrictedSubScan(RowKeyJoin batch)

Description copied from interface: DbSubScan

For a restricted sub-scan, this method allows associating a rowkey join instance. A subscan within a minor fragment must have a corresponding rowkey join batch instance from which it will retrieve its set of rowkeys to perform the restricted scan.

Specified by:

addJoinForRestrictedSubScan in interface DbSubScan