Package com.github.yulichang.wrapper.enums

Enum DefaultFuncEnum

java.lang.Object

java.lang.Enum<DefaultFuncEnum>

com.github.yulichang.wrapper.enums.DefaultFuncEnum

All Implemented Interfaces:

BaseFuncEnum, Serializable, Comparable<DefaultFuncEnum>, java.lang.constant.Constable

public enum DefaultFuncEnum
extends Enum<DefaultFuncEnum>
implements BaseFuncEnum

常用的sql函数枚举 默认实现 可以自己实现接口 BaseFuncEnum 自定义函数 目前支持一个占位符,不支持多个%s

只例举几个通用的,其他函数 first() last() len() ucase() lcase() 等 或者数据库自定义函数请自行扩展

mpj的初衷是只针对简单的连表查询,而非相对复杂的查询,

建议慎用,复杂的查询还是推荐写sql

Author:

yulichang

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
AVG
COUNT
LEN
MAX
MIN
SUM

Method Summary

Modifier and Type	Method	Description
String	getSql()	获取sql 片段
static DefaultFuncEnum	valueOf(String name)	Returns the enum constant of this type with the specified name.
static DefaultFuncEnum[]	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

SUM

public static final DefaultFuncEnum SUM

COUNT

public static final DefaultFuncEnum COUNT

MAX

public static final DefaultFuncEnum MAX

MIN

public static final DefaultFuncEnum MIN

AVG

public static final DefaultFuncEnum AVG

LEN

public static final DefaultFuncEnum LEN

Method Details

values

public static DefaultFuncEnum[] 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 DefaultFuncEnum 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

getSql

public String getSql()

Description copied from interface: BaseFuncEnum

获取sql 片段

Specified by:

getSql in interface BaseFuncEnum