top.onceio.core.db.annotation

注释类型 Col

@Target(value={METHOD,FIELD})
 @Retention(value=RUNTIME)
public @interface Col

可选元素概要

可选元素

限定符和类型	可选元素和说明
String	colDef
boolean	nullable
String	pattern
int	precision (Optional) The precision for a decimal (exact numeric) column.
Class<?>	ref
String	refBy 引用路径
Class<?>[]	refEnum 引用的ID可能来源某个 表。
int	scale (Optional) The scale for a decimal (exact numeric) column.
int	size (Optional) The string-valued column length.
boolean	unique
boolean	useFK depends on ref
String	using
Class<?>	valRef 该字段的值引用自某类字段

元素详细资料

size

public abstract int size

(Optional) The string-valued column length. (Applies only if a string-valued column is used.) The decimal column scale for a decimal (exact numeric) column

默认值:

255

colDef

public abstract String colDef

默认值:

""

unique

public abstract boolean unique

默认值:

false

using

public abstract String using

默认值:

""

nullable

public abstract boolean nullable

默认值:

true

pattern

public abstract String pattern

默认值:

""

precision

public abstract int precision

(Optional) The precision for a decimal (exact numeric) column. (Applies only if a decimal column is used.) Value must be set by developer if used when generating the DDL for the column.

默认值:

0

scale

public abstract int scale

(Optional) The scale for a decimal (exact numeric) column. (Applies only if a decimal column is used.)

默认值:

0

valRef

public abstract Class<?> valRef

该字段的值引用自某类字段

返回:

默认值:

void.class

ref

public abstract Class<?> ref

默认值:

void.class

useFK

public abstract boolean useFK

depends on ref

默认值:

true

refEnum

public abstract Class<?>[] refEnum

引用的ID可能来源某个 表。 注意枚举中的表都会被连接

默认值:

{}

refBy

public abstract String refBy

引用路径

默认值:

""