cn.hutool.db.sql

Enum Direction

java.lang.Object

java.lang.Enum<Direction>

cn.hutool.db.sql.Direction

All Implemented Interfaces:

Serializable, Comparable<Direction>

public enum Direction
extends Enum<Direction>

排序方式（升序或者降序）

Author:

Looly

Enum Constant Summary

Enum Constants

Enum Constant and Description
ASC 升序
DESC 降序

Method Summary

Modifier and Type	Method and Description
static Direction	fromString(String value) 根据字符串值返回对应Direction值
static Direction	valueOf(String name) Returns the enum constant of this type with the specified name.
static Direction[]	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

ASC

public static final Direction ASC

升序

DESC

public static final Direction DESC

降序

Method Detail

values

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

Returns:

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

valueOf

public static Direction 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

fromString

public static Direction fromString(String value)
                            throws IllegalArgumentException

根据字符串值返回对应Direction值

Parameters:

value - 排序方式字符串，只能是 ASC或DESC

Returns:

Direction，null表示提供的value为空

Throws:

IllegalArgumentException - in case the given value cannot be parsed into an enum value.