InputSchema Element (ADF)
Specifies the database schema name for the condition action's input.
语法
<ConditionAction>
...
<InputSchema>
Element Characteristics
| Characteristic | Description |
|---|---|
Data type |
string, between 1 and 128 characters in length. |
Default value |
The application's schema. The default application schema is dbo. |
Occurrence |
Optional once per ConditionAction element. If you do not specify the input schema, the input must be in the application's schema. |
Updates |
You can modify, add, or delete this element when updating the application. Modifying the input schema or name is equivalent to deleting and then adding the rule. |
Element Relationships
| Relationship | Elements |
|---|---|
Parent element |
|
Child elements |
None. |
备注
When you use a condition action, you must specify which view or table contains the event data. This view or table is in a schema.
- If the input is the view named after the event class, the schema is the application schema. The application schema can be specified when defining the application database, or it can be the default value of dbo. For more information, see 定义应用程序数据库.
- If the input is an event chronicle, the schema is defined in the CREATE TABLE statement that creates the event chronicle. This is usually the same as the application schema. For more information, see 为事件类定义历史记录.
For more information about condition actions, see 定义条件操作.
示例
The following example shows how to define a condition action. The query in the Transact-SQL expression selects data from the MyAppSchema.WeatherEventRule view, which contains data from the subscription class and from the MyAppSchema.WeatherEvents event view.
<ConditionAction>
<SqlLogin>[MyLowPrivLogin]</SqlLogin>
<SqlUser>[MyLowPrivUser]</SqlUser>
<InputName>WeatherEvents</InputName>
<InputSchema>MyAppSchema</InputSchema>
<SqlExpression>
INSERT INTO MyAppSchema.WeatherNotifications(SubscriberId,
DeviceName, SubscriberLocale, City, Forecast)
SELECT [Subscription.SubscriberId], [Subscription.DeviceName],
[Subscription.SubscriberLocale], [Input.City],
[Input.Forecast])
FROM MyAppSchema.WeatherEventRule;
</SqlExpression>
</ConditionAction>
请参阅
参考
Application Definition File Reference
概念
Instance Configuration File Reference