org.apache.orc

枚举 OrcFile.WriterVersion

java.lang.Object

java.lang.Enum<OrcFile.WriterVersion>

org.apache.orc.OrcFile.WriterVersion

所有已实现的接口:

Serializable, Comparable<OrcFile.WriterVersion>

封闭类:

OrcFile

public static enum OrcFile.WriterVersion
extends Enum<OrcFile.WriterVersion>

Records the version of the writer in terms of which bugs have been fixed. When you fix bugs in the writer (or make substantial changes) that don't change the file format, add a new version here instead of Version.

The ids are assigned sequentially from 6 per a WriterImplementation so that readers that predate ORC-202 treat the other writers correctly.

枚举常量概要

枚举常量

枚举常量和说明
CUDF_ORIGINAL
FUTURE
HIVE_12055
HIVE_13083
HIVE_4243 fixed stripe/file maximum statistics and string statistics to use utf8 for min/max.
HIVE_8732
ORC_101
ORC_135
ORC_14
ORC_203
ORC_517
ORC_CPP_ORIGINAL
ORIGINAL
PRESTO_ORIGINAL
SCRITCHLEY_GO_ORIGINAL
TRINO_ORIGINAL

方法概要

限定符和类型	方法和说明
static OrcFile.WriterVersion	from(OrcFile.WriterImplementation writer, int val) Convert the integer from OrcProto.PostScript.writerVersion to the enumeration with unknown versions being mapped to FUTURE.
int	getId()
OrcFile.WriterImplementation	getWriterImplementation()
boolean	includes(OrcFile.WriterVersion fix) Does this file include the given fix or come from a different writer?
static OrcFile.WriterVersion	valueOf(String name) 返回带有指定名称的该类型的枚举常量。
static OrcFile.WriterVersion[]	values() 按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。

从类继承的方法 java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

从类继承的方法 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

枚举常量详细资料

ORIGINAL

public static final OrcFile.WriterVersion ORIGINAL

HIVE_8732

public static final OrcFile.WriterVersion HIVE_8732

HIVE_4243

public static final OrcFile.WriterVersion HIVE_4243

fixed stripe/file maximum statistics and string statistics to use utf8 for min/max.

HIVE_12055

public static final OrcFile.WriterVersion HIVE_12055

HIVE_13083

public static final OrcFile.WriterVersion HIVE_13083

ORC_101

public static final OrcFile.WriterVersion ORC_101

ORC_135

public static final OrcFile.WriterVersion ORC_135

ORC_517

public static final OrcFile.WriterVersion ORC_517

ORC_203

public static final OrcFile.WriterVersion ORC_203

ORC_14

public static final OrcFile.WriterVersion ORC_14

ORC_CPP_ORIGINAL

public static final OrcFile.WriterVersion ORC_CPP_ORIGINAL

PRESTO_ORIGINAL

public static final OrcFile.WriterVersion PRESTO_ORIGINAL

SCRITCHLEY_GO_ORIGINAL

public static final OrcFile.WriterVersion SCRITCHLEY_GO_ORIGINAL

TRINO_ORIGINAL

public static final OrcFile.WriterVersion TRINO_ORIGINAL

CUDF_ORIGINAL

public static final OrcFile.WriterVersion CUDF_ORIGINAL

FUTURE

public static final OrcFile.WriterVersion FUTURE

方法详细资料

values

public static OrcFile.WriterVersion[] values()

按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示:

for (OrcFile.WriterVersion c : OrcFile.WriterVersion.values())
    System.out.println(c);

返回:

按照声明该枚举类型的常量的顺序返回的包含这些常量的数组

valueOf

public static OrcFile.WriterVersion valueOf(String name)

返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)

参数:

name - 要返回的枚举常量的名称。

返回:

返回带有指定名称的枚举常量

抛出:

IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量

NullPointerException - 如果参数为空值

getWriterImplementation

public OrcFile.WriterImplementation getWriterImplementation()

getId

public int getId()

from

public static OrcFile.WriterVersion from(OrcFile.WriterImplementation writer,
                                         int val)

Convert the integer from OrcProto.PostScript.writerVersion to the enumeration with unknown versions being mapped to FUTURE.

参数:

writer - the writer implementation

val - the serialized writer version

返回:

the corresponding enumeration value

includes

public boolean includes(OrcFile.WriterVersion fix)

Does this file include the given fix or come from a different writer?

参数:

fix - the required fix

返回:

true if the required fix is present