Package org.apache.druid.segment.join

Enum Class JoinType

java.lang.Object

java.lang.Enum<JoinType>

org.apache.druid.segment.join.JoinType

All Implemented Interfaces:

Serializable, Comparable<JoinType>, Constable, Cacheable

public enum JoinType
extends Enum<JoinType>
implements Cacheable

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
FULL
INNER
LEFT
RIGHT

Method Summary

Modifier and Type	Method	Description
final byte[]	getCacheKey()	Get a byte array used as a cache key.
abstract boolean	isLefty()	"Lefty" joins (LEFT or FULL) always include the full left-hand side, and can generate nulls on the right.
abstract boolean	isRighty()	"Righty" joins (RIGHT or FULL) always include the full right-hand side, and can generate nulls on the left.
static JoinType	valueOf(String name)	Returns the enum constant of this class with the specified name.
static JoinType[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

INNER

public static final JoinType INNER

LEFT

public static final JoinType LEFT

RIGHT

public static final JoinType RIGHT

FULL

public static final JoinType FULL

Method Details

values

public static JoinType[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static JoinType valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null

isLefty

public abstract boolean isLefty()

"Lefty" joins (LEFT or FULL) always include the full left-hand side, and can generate nulls on the right.

isRighty

public abstract boolean isRighty()

"Righty" joins (RIGHT or FULL) always include the full right-hand side, and can generate nulls on the left.

getCacheKey

public final byte[] getCacheKey()

Description copied from interface: Cacheable

Get a byte array used as a cache key.

Specified by:

getCacheKey in interface Cacheable

Returns:

bytes to be used as cache key - or null if this object should not be cached.