SQL Server

Load an Email from a Chilkat XML String

Demonstrates the Chilkat Email.LoadXmlString method, which loads an email from a Chilkat XML representation held in a string, typically obtained from GetXml. On success, the loaded message replaces the entire current email. This example serializes one email to XML, then reconstructs it in a second object.

Background: This is the in-memory (string) counterpart to LoadXml, which reads from a file. Pairing GetXml with LoadXmlString lets you store an email's full state as text in a database column, cache, or message queue, then rebuild the Email object later — without touching the filesystem.

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-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

    --  Demonstrates the LoadXmlString method, which loads an email from a Chilkat XML string
    --  (typically obtained from GetXml).  On success, the loaded message replaces the entire
    --  current email.

    --  Create an email and serialize it to Chilkat XML (as GetXml would produce).
    DECLARE @source int
    EXEC @hr = sp_OACreate 'Chilkat.Email', @source OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    EXEC sp_OASetProperty @source, 'Subject', 'Saved email'
    EXEC sp_OASetProperty @source, 'From', 'alice@example.com'
    EXEC sp_OASetProperty @source, 'Body', 'Hello!'
    DECLARE @xmlStr nvarchar(4000)
    EXEC sp_OAMethod @source, 'GetXml', @xmlStr OUT

    --  Load a new email object from the XML string.
    DECLARE @email int
    EXEC @hr = sp_OACreate 'Chilkat.Email', @email OUT

    EXEC sp_OAMethod @email, 'LoadXmlString', @success OUT, @xmlStr
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @email, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @source
        EXEC @hr = sp_OADestroy @email
        RETURN
      END


    EXEC sp_OAGetProperty @email, 'Subject', @sTmp0 OUT
    PRINT 'Loaded subject: ' + @sTmp0

    EXEC @hr = sp_OADestroy @source
    EXEC @hr = sp_OADestroy @email


END
GO