org.dromara.hutool.db.meta

Enum ResultColumn.ColumnNullable

java.lang.Object

java.lang.Enum<ResultColumn.ColumnNullable>

org.dromara.hutool.db.meta.ResultColumn.ColumnNullable

All Implemented Interfaces:

Serializable, Comparable<ResultColumn.ColumnNullable>

Enclosing class:

ResultColumn

public static enum ResultColumn.ColumnNullable
extends Enum<ResultColumn.ColumnNullable>

列null值选项

Enum Constant Summary

Enum Constants

Enum Constant and Description
NO_NULLS 列不允许有null
NULLABLE 列允许有null
UNKNOWN 未知

Method Summary

Modifier and Type	Method and Description
int	getValue() 获取枚举值，即列null值选项代码
static ResultColumn.ColumnNullable	of(int nullable) ResultSetMetaData中的int值转枚举
static ResultColumn.ColumnNullable	valueOf(String name) Returns the enum constant of this type with the specified name.
static ResultColumn.ColumnNullable[]	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

NO_NULLS

public static final ResultColumn.ColumnNullable NO_NULLS

列不允许有null

NULLABLE

public static final ResultColumn.ColumnNullable NULLABLE

列允许有null

UNKNOWN

public static final ResultColumn.ColumnNullable UNKNOWN

未知

Method Detail

values

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

Returns:

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

valueOf

public static ResultColumn.ColumnNullable 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

of

public static ResultColumn.ColumnNullable of(int nullable)

ResultSetMetaData中的int值转枚举

Parameters:

nullable - nullable值

Returns:

ColumnNullable

getValue

public int getValue()

获取枚举值，即列null值选项代码

Returns:

列null值选项代码