Package org.apache.arrow.vector.types

Enum UnionMode

java.lang.Object

java.lang.Enum<UnionMode>

org.apache.arrow.vector.types.UnionMode

All Implemented Interfaces:

Serializable, Comparable<UnionMode>, java.lang.constant.Constable

public enum UnionMode
extends Enum<UnionMode>

Different memory layouts for Union Vectors.

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
Dense	Each child vector is of variable width.
Sparse	Each child vector is the same length as the overall vector, and there is one 8-bit integer buffer to indicate the index of a child vector to use at any given position.

Method Summary

Modifier and Type	Method	Description
static UnionMode	fromFlatbufID(short id)
short	getFlatbufID()
static UnionMode	valueOf(String name)	Returns the enum constant of this type with the specified name.
static UnionMode[]	values()	Returns an array containing the constants of this enum type, 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

Sparse

public static final UnionMode Sparse

Each child vector is the same length as the overall vector, and there is one 8-bit integer buffer to indicate the index of a child vector to use at any given position.

Dense

public static final UnionMode Dense

Each child vector is of variable width. The parent vector contains both a child index vector (like in Sparse) and in addition a slot index buffer to determine the offset into the child vector indicated by the index vector.

Method Details

values

public static UnionMode[] values()

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

Returns:

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

valueOf

public static UnionMode valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (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 type has no constant with the specified name

NullPointerException - if the argument is null

getFlatbufID

public short getFlatbufID()

fromFlatbufID

public static UnionMode fromFlatbufID(short id)