org.apache.flink.table.utils

枚举 DateTimeUtils.TimeUnit

java.lang.Object

java.lang.Enum<DateTimeUtils.TimeUnit>

org.apache.flink.table.utils.DateTimeUtils.TimeUnit

所有已实现的接口:

Serializable, Comparable<DateTimeUtils.TimeUnit>

封闭类:

DateTimeUtils

public static enum DateTimeUtils.TimeUnit
extends Enum<DateTimeUtils.TimeUnit>

Enumeration of time units used to construct an interval.

Only YEAR, MONTH, DAY, HOUR, MINUTE, SECOND can be the unit of a SQL interval.

The others (QUARTER, WEEK, MILLISECOND, DOW, DOY, EPOCH, DECADE, CENTURY, MILLENNIUM, MICROSECOND, NANOSECOND, ISODOW and ISOYEAR) are convenient to use internally, when converting to and from UNIX timestamps. And also may be arguments to the EXTRACT, TIMESTAMPADD and TIMESTAMPDIFF functions.

枚举常量概要

枚举常量

枚举常量和说明
CENTURY
DAY
DECADE
DOW
DOY
EPOCH
HOUR
ISODOW
ISOYEAR
MICROSECOND
MILLENNIUM
MILLISECOND
MINUTE
MONTH
NANOSECOND
QUARTER
SECOND
WEEK
YEAR

字段概要

字段

限定符和类型	字段和说明
BigDecimal	multiplier
char	separator
boolean	yearMonth

方法概要

限定符和类型	方法和说明
static DateTimeUtils.TimeUnit	getValue(int ordinal) Returns the TimeUnit associated with an ordinal.
boolean	isValidValue(BigDecimal field) Returns whether a given value is valid for a field of this time unit.
static DateTimeUtils.TimeUnit	valueOf(String name) 返回带有指定名称的该类型的枚举常量。
static DateTimeUtils.TimeUnit[]	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

YEAR

public static final DateTimeUtils.TimeUnit YEAR

MONTH

public static final DateTimeUtils.TimeUnit MONTH

DAY

public static final DateTimeUtils.TimeUnit DAY

HOUR

public static final DateTimeUtils.TimeUnit HOUR

MINUTE

public static final DateTimeUtils.TimeUnit MINUTE

SECOND

public static final DateTimeUtils.TimeUnit SECOND

QUARTER

public static final DateTimeUtils.TimeUnit QUARTER

ISOYEAR

public static final DateTimeUtils.TimeUnit ISOYEAR

WEEK

public static final DateTimeUtils.TimeUnit WEEK

MILLISECOND

public static final DateTimeUtils.TimeUnit MILLISECOND

MICROSECOND

public static final DateTimeUtils.TimeUnit MICROSECOND

NANOSECOND

public static final DateTimeUtils.TimeUnit NANOSECOND

DOW

public static final DateTimeUtils.TimeUnit DOW

ISODOW

public static final DateTimeUtils.TimeUnit ISODOW

DOY

public static final DateTimeUtils.TimeUnit DOY

EPOCH

public static final DateTimeUtils.TimeUnit EPOCH

DECADE

public static final DateTimeUtils.TimeUnit DECADE

CENTURY

public static final DateTimeUtils.TimeUnit CENTURY

MILLENNIUM

public static final DateTimeUtils.TimeUnit MILLENNIUM

字段详细资料

yearMonth

public final boolean yearMonth

separator

public final char separator

multiplier

public final BigDecimal multiplier

方法详细资料

values

public static DateTimeUtils.TimeUnit[] 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 (DateTimeUtils.TimeUnit c : DateTimeUtils.TimeUnit.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 DateTimeUtils.TimeUnit 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

getValue

public static DateTimeUtils.TimeUnit getValue(int ordinal)

Returns the TimeUnit associated with an ordinal. The value returned is null if the ordinal is not a member of the TimeUnit enumeration.

isValidValue

public boolean isValidValue(BigDecimal field)

Returns whether a given value is valid for a field of this time unit.

参数:

field - Field value

返回:

Whether value