sqloptions:notificationRequest 标头元素

后续版本的 Microsoft SQL Server 将删除该功能。 请避免在新的开发工作中使用该功能，并着手修改当前还在使用该功能的应用程序。

sqloptions:notificationRequest 选项使客户端可以针对请求为触发器指定查询通知，例如：

<SOAP-ENV:Header
  xmlns:SOAP-ENV="https://schemas.xmlsoap.org/soap/envelope/"
  xmlns:sqloptions="https://schemas.microsoft.com/sqlserver/2004/SOAP/Options">
    <sqloptions:notificationRequest           SOAP-ENV:mustUnderstand="1"          timeout="timeout value in seconds"           deliveryService="name of delivery service" />

</SOAP-ENV:Header>

sqloptions:notificationRequest 选项显示为 SOAP 标头。该标头由一个名为 sqloptions:notificationRequest 的元素组成。此元素有两个必需的属性 notificationId 和 deliveryService，还有一个可选属性 timeout。notificationId 和 deliveryService 都是文本值，timeout 是一个 xsd:integer 值。有关如何在查询通知中使用 sqloptions:notificationRequest 选项的详细信息，请参阅 使用 SOAP 标头订阅查询通知。

一个请求中只能出现 sqloptions:notificationRequest 选项的一个实例。该选项无法在响应中显示。多个选项实例将会生成错误。

以下是 sqloptions:notificationRequest 选项的架构片断：

<xs:element name="notificationRequest" form="qualified">
    <xs:annotation>
        <xs:documentation>
            Requests query notifications for the request.
        </xs:documentation>
    </xs:annotation>
    <xs:complexType>
        <xs:attribute
          use="required"
          name="notificationId"
          type="xs:string"
          form="unqualified">
            <xs:annotation>
                <xs:documentation>
                    The notification identifier.
                </xs:documentation>
            </xs:annotation>
        </xs:attribute>
        <xs:attribute
          use="required"
          name="deliveryService"
          type="xs:string"
          form="unqualified">
            <xs:annotation>
                <xs:documentation>
                    The deliveryService.
                </xs:documentation>
            </xs:annotation>
        </xs:attribute>
        <xs:attribute name="timeout" type="xs:integer" form="unqualified">
            <xs:annotation>
                <xs:documentation>
                    The timeout value.
                </xs:documentation>
            </xs:annotation>
        </xs:attribute>
    </xs:complexType>
</xs:element>

指定此标题时，将请求订阅查询通知。有关详细信息，请参阅 使用查询通知。

示例

以下是在 SOAP 请求和响应消息中使用 sqloptions:notificationRequest 标头的示例。

请求

<SOAP-ENV:Envelope xmlns:SOAP-ENV="https://schemas.xmlsoap.org/soap/envelope/"
                   xmlns:sql="https://schemas.microsoft.com/sqlserver/2004/SOAP"
                   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                   xmlns:sqlparam="https://schemas.microsoft.com/sqlserver/2004/SOAP/types/SqlParameter"
                   xmlns:sqlsoaptypes="https://schemas.microsoft.com/sqlserver/2004/SOAP/types"
                   xmlns:sqloptions="https://schemas.microsoft.com/sqlserver/2004/SOAP/Options">
  <SOAP-ENV:Header>
    <sqloptions:notificationRequest notificationId="notification"
                                    timeout="1"
                                    deliveryService="deliveryService" >
    </sqloptions:notificationRequest>
  </SOAP-ENV:Header>
  <SOAP-ENV:Body>
    <sql:sqlbatch>
      <sql:BatchCommands></sql:BatchCommands>
    </sql:sqlbatch>
  </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

响应

<SOAP-ENV:Envelope xml:space="preserve" 
                   xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
                   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
                   xmlns:SOAP-ENV="https://schemas.xmlsoap.org/soap/envelope/" 
                   xmlns:sql="https://schemas.microsoft.com/sqlserver/2004/SOAP" 
                   xmlns:sqlsoaptypes="https://schemas.microsoft.com/sqlserver/2004/SOAP/types" 
                   xmlns:sqlrowcount="https://schemas.microsoft.com/sqlserver/2004/SOAP/types/SqlRowCount" 
                   xmlns:sqlmessage="https://schemas.microsoft.com/sqlserver/2004/SOAP/types/SqlMessage" 
                   xmlns:sqlresultstream="https://schemas.microsoft.com/sqlserver/2004/SOAP/types/SqlResultStream" 
                   xmlns:sqltransaction="https://schemas.microsoft.com/sqlserver/2004/SOAP/types/SqlTransaction" 
                   xmlns:sqltypes="https://schemas.microsoft.com/sqlserver/2004/sqltypes">
  <SOAP-ENV:Body>
    <sql:sqlbatchResponse>
      <sql:sqlbatchResult>
      </sql:sqlbatchResult>
    </sql:sqlbatchResponse>
  </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

请参阅

参考

SOAP 扩展标头