Package ai.rapids.cudf

Enum ParquetWriterOptions.DictionaryPolicy

java.lang.Object

java.lang.Enum<ParquetWriterOptions.DictionaryPolicy>

ai.rapids.cudf.ParquetWriterOptions.DictionaryPolicy

All Implemented Interfaces:

Serializable, Comparable<ParquetWriterOptions.DictionaryPolicy>, java.lang.constant.Constable

Enclosing class:

ParquetWriterOptions

public static enum ParquetWriterOptions.DictionaryPolicy
extends Enum<ParquetWriterOptions.DictionaryPolicy>

Mirror of cudf::io::dictionary_policy. Controls when the Parquet writer is allowed to use dictionary encoding.

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
ADAPTIVE	Use dictionary encoding when it does not impact compression.
ALWAYS	Use dictionary encoding even if it disables compression for affected columns.
NEVER	Never use dictionary encoding.

Method Summary

Modifier and Type	Method	Description
static ParquetWriterOptions.DictionaryPolicy	valueOf(String name)	Returns the enum constant of this type with the specified name.
static ParquetWriterOptions.DictionaryPolicy[]	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

NEVER

public static final ParquetWriterOptions.DictionaryPolicy NEVER

Never use dictionary encoding.

ADAPTIVE

public static final ParquetWriterOptions.DictionaryPolicy ADAPTIVE

Use dictionary encoding when it does not impact compression. The writer disables dictionary encoding for any column chunk whose dictionary would exceed ParquetWriterOptions.Builder.withMaxDictionarySize(long).

ALWAYS

public static final ParquetWriterOptions.DictionaryPolicy ALWAYS

Use dictionary encoding even if it disables compression for affected columns.

Method Details

values

public static ParquetWriterOptions.DictionaryPolicy[] 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 ParquetWriterOptions.DictionaryPolicy 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