Package org.apache.juneau.marshall.parquet

Enum Class CompressionCodec

java.lang.Object

java.lang.Enum<CompressionCodec>

org.apache.juneau.marshall.parquet.CompressionCodec

All Implemented Interfaces:

Serializable, Comparable<CompressionCodec>, Constable

public enum CompressionCodec
extends Enum<CompressionCodec>

Parquet compression codecs supported by this implementation.

UNCOMPRESSED and GZIP support both directions. SNAPPY is decode-only (a dependency-free, pure-Java Snappy block-format decompressor) so Juneau can read spec-compliant Parquet from parquet-mr / Spark / Hive, which default to Snappy. LZ4, Zstd, Brotli, and LZO require external libraries and remain unsupported (hard error on read).

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
GZIP	GZIP compression.
SNAPPY	Snappy block format — decode only (write is not supported).
UNCOMPRESSED	No compression.

Method Summary

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

UNCOMPRESSED

public static final CompressionCodec UNCOMPRESSED

No compression.

SNAPPY

public static final CompressionCodec SNAPPY

Snappy block format — decode only (write is not supported).

GZIP

public static final CompressionCodec GZIP

GZIP compression.

Method Details

values

public static CompressionCodec[] 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 CompressionCodec 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