EventRules Element (ADF)

Provides a location for all of the subscription event rule definitions for one subscription class.

语法

<SubscriptionClasses>
    <SubscriptionClass>
        ...
        <EventRules>

Element Characteristics

Characteristic	Description
Data type	None.
Default value	None.
Occurrence	Optional once per SubscriptionClass element.
Updates	Can be added and deleted when updating the application.

Element Relationships

Relationship	Elements
Parent element	SubscriptionClass Element (ADF)
Child elements	EventRule Element (ADF)

示例

The following example shows an EventRules element and its child elements. The rule creates event-driven notifications, and also loads notification data into the StockSubscriptionChron table. It is executed whenever an event batch containing events of the StockEvents class is processed. This rule is permitted one minute to complete successfully.

<EventRules>
    <EventRule>
        <RuleName>StockSubscriptionEventRule</RuleName>
        <Action>
        -- Generate notifications from event and chronicle data
        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 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>
        <ActionTimeout>P0DT00H01M00S</ActionTimeout>
        <EventClassName>StockEvents</EventClassName>
    </EventRule>
</EventRules>

请参阅

参考

Application Definition File Reference

其他资源

定义事件规则
更新实例和应用程序

帮助和信息

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