org.rocksdb

Enum FilterPolicyType

java.lang.Object

java.lang.Enum<FilterPolicyType>

org.rocksdb.FilterPolicyType

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<FilterPolicyType>

public enum FilterPolicyType
extends java.lang.Enum<FilterPolicyType>

IndexType used in conjunction with BlockBasedTable.

Enum Constant Summary

Enum Constants

Enum Constant and Description
kBloomFilterPolicy This is a user-facing policy that automatically choose between LegacyBloom and FastLocalBloom based on context at build time, including compatibility with format_version.
kRibbonFilterPolicy This is a user-facing policy that chooses between Standard128Ribbon and FastLocalBloom based on context at build time (LSM level and other factors in extreme cases).
kUnknownFilterPolicy

Method Summary

Modifier and Type	Method and Description
Filter	createFilter(long handle, double param)
byte	getValue() Returns the byte value of the enumerations value
static FilterPolicyType	valueOf(java.lang.String name) Returns the enum constant of this type with the specified name.
static FilterPolicyType[]	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

kUnknownFilterPolicy

public static final FilterPolicyType kUnknownFilterPolicy

kBloomFilterPolicy

public static final FilterPolicyType kBloomFilterPolicy

This is a user-facing policy that automatically choose between LegacyBloom and FastLocalBloom based on context at build time, including compatibility with format_version.

kRibbonFilterPolicy

public static final FilterPolicyType kRibbonFilterPolicy

This is a user-facing policy that chooses between Standard128Ribbon and FastLocalBloom based on context at build time (LSM level and other factors in extreme cases).

Method Detail

values

public static FilterPolicyType[] 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 (FilterPolicyType c : FilterPolicyType.values())
    System.out.println(c);

Returns:

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

valueOf

public static FilterPolicyType valueOf(java.lang.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:

java.lang.IllegalArgumentException - if this enum type has no constant with the specified name

java.lang.NullPointerException - if the argument is null

createFilter

public Filter createFilter(long handle,
                           double param)

getValue

public byte getValue()

Returns the byte value of the enumerations value

Returns:

byte representation