Package org.apache.datasketches.common

Enum ResizeFactor

java.lang.Object

java.lang.Enum<ResizeFactor>

org.apache.datasketches.common.ResizeFactor

All Implemented Interfaces:

Serializable, Comparable<ResizeFactor>

public enum ResizeFactor
extends Enum<ResizeFactor>

For the Families that accept this configuration parameter, it controls the size multiple that affects how fast the internal cache grows, when more space is required. See Resize Factor

Author:

Lee Rhodes

Enum Constant Summary

Enum Constants

Enum Constant	Description
X1	Do not resize.
X2	Resize factor is 2.
X4	Resize factor is 4.
X8	Resize factor is 8.

Method Summary

Modifier and Type	Method	Description
static ResizeFactor	getRF(int lg)	Returns the Resize Factor given the Log-base 2 of the Resize Factor
int	getValue()	Returns the Resize Factor
int	lg()	Returns the Log-base 2 of the Resize Factor
static ResizeFactor	valueOf(String name)	Returns the enum constant of this type with the specified name.
static ResizeFactor[]	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, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

X1

public static final ResizeFactor X1

Do not resize. Sketch will be configured to full size.

X2

public static final ResizeFactor X2

Resize factor is 2.

X4

public static final ResizeFactor X4

Resize factor is 4.

X8

public static final ResizeFactor X8

Resize factor is 8.

Method Detail

values

public static ResizeFactor[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (ResizeFactor c : ResizeFactor.values())
    System.out.println(c);

Returns:

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

valueOf

public static ResizeFactor 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

lg

public int lg()

Returns the Log-base 2 of the Resize Factor

Returns:

the Log-base 2 of the Resize Factor

getRF

public static ResizeFactor getRF(int lg)

Returns the Resize Factor given the Log-base 2 of the Resize Factor

Parameters:

lg - a value between zero and 3, inclusive.

Returns:

the Resize Factor given the Log-base 2 of the Resize Factor

getValue

public int getValue()

Returns the Resize Factor

Returns:

the Resize Factor