The Lookup action retrieves a value from Database and inserts that value into an existing Arc message in the flow.

Lookup Query

Follow these steps to configure a Lookup query for the Database connector:

1. In the CData Arc flow, drag an arrow from the connector that will provide input to the connector.

2. Under Destination Type, select either XPath to insert the query response values into an XML file or Header to insert the query response value into a message header.

3 Provide the Destination for the query response values: - For XPath, enter the XPath value to the desired destination in the XML file, e.g. /Items/Invoices/Customer. - For Header, enter the name of the new message header for the data.

1. In the Lookup Query, enter the SQL query to retrieve data to retrieve from Database tables.
   • For XPath, format the path as ${XPATH:/path/to/element}. For example, SELECT CustomerID FROM Customers WHERE CustomerName = ${XPATH:/Items/Invoices/Customer}.
   • For Header, format the path as ${HEADER:HeaderName}.

2. If the query you entered could return multiple values, check Use first result to avoid errors.

3. Set Value Not Found Action to the desired behavior for values that cannot be found.

   

4. In the Arc flow, drag an arrow from the Database connector to the connector where you want your resulting XML or Header data to go.