Action Element for EventRule (ADF)

Provides a Transact-SQL statement that specifies the action to be taken in a subscription event rule.

语法

<SubscriptionClasses>
    <SubscriptionClass>
        ...
        <EventRules>
            <EventRule>
                ...
                <Action>

Element Characteristics

Characteristic	Description
Data type	string, between 1 and 100,000 characters in length.
Default value	None.
Occurrence	Required once per EventRule element.
Updates	Can be modified, but not added or deleted, when updating the application.

Element Relationships

Relationship	Elements
Parent element	EventRule Element (ADF)
Child elements	None.

示例

This example shows a populated Action element for an EventRule. The Transact-SQL statements use a notification function to create notifications, and also insert event data into a chronicle table.

<Action>
-- Insert notifications into StockNotifications view
INSERT INTO StockNotifications ( SubscriberId, DeviceName,
    SubscriberLocale, StockSymbol, StockPrice )
SELECT S.SubscriberId, S.DeviceName, S.SubscriberLocale,
        E.StockSymbol, E.StockPrice
    FROM StockSubscriptions S JOIN StockEvents E
    ON S.StockSymbol = E.StockSymbol
    JOIN StockEventChron C
    ON S.StockSymbol = C.StockSymbol
    WHERE S.StockTriggerPrice &lt;= E.StockPrice
        AND S.StockTriggerPrice &gt; C.StockHighPrice;
-- Update the subscription chronicle
INSERT StockSubscriptionChron (SubscriberId, StockSymbol, StockPrice)
SELECT S.SubscriberId, S.StockSymbol, E.StockPrice
    FROM StockSubscriptions S JOIN StockEvents E
    ON S.StockSymbol = E.StockSymbol;
</Action>

请参阅

参考

Application Definition File Reference

其他资源

定义事件规则
定义订阅规则
更新实例和应用程序

帮助和信息

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