Package org.apache.druid.query.operator

Class AbstractSortOperatorFactory

java.lang.Object

org.apache.druid.query.operator.AbstractSortOperatorFactory

All Implemented Interfaces:

OperatorFactory

Direct Known Subclasses:

NaiveSortOperatorFactory, PartitionSortOperatorFactory

public abstract class AbstractSortOperatorFactory
extends Object
implements OperatorFactory

Field Summary

Fields

Modifier and Type	Field	Description
protected final List<ColumnWithDirection>	sortColumns

Constructor Summary

Constructors

Constructor	Description
AbstractSortOperatorFactory(List<ColumnWithDirection> sortColumns)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)
List<ColumnWithDirection>	getSortColumns()
int	hashCode()
String	toString()
boolean	validateEquivalent(OperatorFactory other)	Validates the equivalence of Operators.
abstract Operator	wrap(Operator op)	Builds an operator according to the definition of the OperatorFactory and wraps it around the operator passed in to this function.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

sortColumns

protected final List<ColumnWithDirection> sortColumns

Constructor Details

AbstractSortOperatorFactory

public AbstractSortOperatorFactory(List<ColumnWithDirection> sortColumns)

Method Details

getSortColumns

public List<ColumnWithDirection> getSortColumns()

wrap

public abstract Operator wrap(Operator op)

Description copied from interface: OperatorFactory

Builds an operator according to the definition of the OperatorFactory and wraps it around the operator passed in to this function.

Specified by:

wrap in interface OperatorFactory

Parameters:

op - the Operator to wrap

Returns:

the wrapped Operator

validateEquivalent

public boolean validateEquivalent(OperatorFactory other)

Description copied from interface: OperatorFactory

Validates the equivalence of Operators. This is similar to @{code .equals} but is its own method so that it can ignore certain fields that would be important for a true equality check. Namely, two Operators defined the same way but with different output names can be considered equivalent even though they are not equal.

This primarily exists to simplify tests, where this equivalence can be used to validate that the Operators created by the SQL planner are actually equivalent to what we expect without needing to be overly dependent on how the planner names output columns

Specified by:

validateEquivalent in interface OperatorFactory

Parameters:

other - the processor to test equivalence of

Returns:

boolean identifying if these processors should be considered equivalent to each other.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object