sf.database.dbinfo

Enum ColumnChange.Change

java.lang.Object

java.lang.Enum<ColumnChange.Change>

sf.database.dbinfo.ColumnChange.Change

All Implemented Interfaces:

Serializable, Comparable<ColumnChange.Change>

Enclosing class:

ColumnChange

public static enum ColumnChange.Change
extends Enum<ColumnChange.Change>

列的变化种类

• ADD_COLUMN
  列添加
• DROP_COLUMN
  列删除
• CHG_DATATYPE
  数据类型定义变化
• CHG_TO_NULL
  变更为允许NULL
• CHG_TO_NOT_NULL
  变更为NOT NULL
• CHG_DEFAULT
  变更缺省值的表达式
• CHG_DROP_DEFAULT
  取消缺省值设置

Author:

Enum Constant Summary

Enum Constants

Enum Constant and Description
ADD_COLUMN 列变更种类：列添加
CHG_DATATYPE 列变更种类：数据类型变化
CHG_DEFAULT 列变更种类：添加或修改缺省值的表达式
CHG_DROP_DEFAULT 列变更种类： 取消DEFAULT设置
CHG_TO_NOT_NULL 列变更种类：变更为NOT NULL
CHG_TO_NULL 列变更种类： 变更为可NULL
DROP_COLUMN 列变更种类： 列删除

Method Summary

Modifier and Type	Method and Description
static ColumnChange.Change	valueOf(String name) Returns the enum constant of this type with the specified name.
static ColumnChange.Change[]	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

ADD_COLUMN

public static final ColumnChange.Change ADD_COLUMN

列变更种类：列添加

DROP_COLUMN

public static final ColumnChange.Change DROP_COLUMN

列变更种类： 列删除

CHG_DATATYPE

public static final ColumnChange.Change CHG_DATATYPE

列变更种类：数据类型变化

CHG_TO_NULL

public static final ColumnChange.Change CHG_TO_NULL

列变更种类： 变更为可NULL

CHG_TO_NOT_NULL

public static final ColumnChange.Change CHG_TO_NOT_NULL

列变更种类：变更为NOT NULL

CHG_DEFAULT

public static final ColumnChange.Change CHG_DEFAULT

列变更种类：添加或修改缺省值的表达式

CHG_DROP_DEFAULT

public static final ColumnChange.Change CHG_DROP_DEFAULT

列变更种类： 取消DEFAULT设置

Method Detail

values

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

Returns:

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

valueOf

public static ColumnChange.Change 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