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Message Schemas for the Polling and TypedPolling Operations

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The Microsoft BizTalk Adapter for SQL Server surfaces the Polling and TypedPolling inbound operations to return the result set of the polling query to an adapter client.

You configure the Polling and TypedPolling operations by setting binding properties in the SQL adapter. For more information about these binding properties, see Read about the BizTalk Adapter for SQL Server adapter binding properties. You set the PollingStatement binding property to specify a SQL statement (SELECT or EXEC <stored procedure>) for the polling query. The result set of this query is returned as data to your code in the Polling operation, and as strongly-typed data in the TypedPolling operation. The structure of the result set is determined by the metadata that the adapter surfaces for the specified query.

Polling message structure

Operation: Polling

XML Message:

<?xml version="1.0" encoding="utf-8" ?>
  <Polling xmlns="http://schemas.microsoft.com/Sql/2008/05/Polling">
    <PolledData>
      <DataSet xmlns="http://schemas.datacontract.org/2004/07/System.Data">
        <any>[Value]</any>
        <any>[Value]</any>
        …
        </DataSet>
    </PolledData>
 </Polling>

Description: The inbound message that is sent by the SQL Server to the adapter clients.

TypedPolling message structure

Operation: TypedPolling

XML Message:

<?xml version="1.0" encoding="utf-8" ?>
  <TypedPollingResultSet xmlns="http://schemas.microsoft.com/Sql/2008/05/TypedPolling">
    <COLUMN1>[Value]</Column1>
    <COLUMN2>[Value]</Column2>
    …
  </TypedPollingResultSet>

Description: The strongly-typed inbound message that is sent by the SQL Server to the adapter clients.

Message Action for the Polling and TypedPolling Operations

The message action for the:

  • Polling operation is “Polling.”

  • TypedPolling operation is “TypedPolling.”