org.apache.drill.exec.physical.base

Class AbstractSubScan

java.lang.Object

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

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

All Implemented Interfaces:

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

Direct Known Subclasses:

AbstractDbSubScan, DirectSubScan, EasySubScan, EnumerableSubScan, InfoSchemaSubScan, JdbcSubScan

public abstract class AbstractSubScan
extends AbstractBase
implements SubScan

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
AbstractSubScan(String userName)

Method Summary

Modifier and Type	Method and Description
void	accept(GraphVisitor<PhysicalOperator> visitor)
<T,X,E extends Throwable> T	accept(PhysicalVisitor<T,X,E> physicalVisitor, X value) Provides capability to build a set of output based on traversing a query graph tree.
PhysicalOperator	getNewWithChildren(List<PhysicalOperator> children) Regenerate with this node with a new set of children.
BatchSchema.SelectionVectorMode	getSVMode() Describes the SelectionVector Mode for the output steam from this physical op.
boolean	isExecutable() Describes whether or not a particular physical operator can actually be executed.
Iterator<PhysicalOperator>	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

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

AbstractSubScan

public AbstractSubScan(String userName)

Method Detail

isExecutable

public boolean isExecutable()

Description copied from interface: PhysicalOperator

Describes whether or not a particular physical operator can actually be executed. Most physical operators can be executed. However, Exchange nodes cannot be executed. In order to be executed, they must be converted into their Exec sub components.

Specified by:

isExecutable in interface PhysicalOperator

Overrides:

isExecutable in class AbstractBase

accept

public <T,X,E extends Throwable> T accept(PhysicalVisitor<T,X,E> physicalVisitor,
                                          X value)
                                   throws E extends Throwable

Description copied from interface: PhysicalOperator

Provides capability to build a set of output based on traversing a query graph tree.

Specified by:

accept in interface PhysicalOperator

Throws:

E extends Throwable

getNewWithChildren

public PhysicalOperator getNewWithChildren(List<PhysicalOperator> children)
                                    throws ExecutionSetupException

Description copied from interface: PhysicalOperator

Regenerate with this node with a new set of children. This is used in the case of materialization or optimization.

Specified by:

getNewWithChildren in interface PhysicalOperator

Throws:

ExecutionSetupException

accept

public void accept(GraphVisitor<PhysicalOperator> visitor)

Specified by:

accept in interface GraphValue<PhysicalOperator>

Overrides:

accept in class AbstractBase

iterator

public Iterator<PhysicalOperator> iterator()

Specified by:

iterator in interface Iterable<PhysicalOperator>

getSVMode

public BatchSchema.SelectionVectorMode getSVMode()

Description copied from interface: PhysicalOperator

Describes the SelectionVector Mode for the output steam from this physical op. This property is used during physical plan creating using PhysicalPlanCreator.

Specified by:

getSVMode in interface PhysicalOperator

Overrides:

getSVMode in class AbstractBase