(SQL Server) Transition from Imap.ThreadCmd to Imap.QueryThread

Provides instructions for replacing deprecated ThreadCmd method calls with QueryThread.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @imap int
    -- Use "Chilkat_9_5_0.Imap" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Imap', @imap OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- ...
    -- ...

    DECLARE @threadAlg nvarchar(4000)
    SELECT @threadAlg = 'REFERENCES'
    DECLARE @charset nvarchar(4000)
    SELECT @charset = 'UTF-8'
    DECLARE @searchCriteria nvarchar(4000)
    SELECT @searchCriteria = 'SUBJECT a'
    DECLARE @bUid int
    SELECT @bUid = 1

    -- ------------------------------------------------------------------------
    -- The ThreadCmd method is deprecated:

    DECLARE @jsonObj int
    EXEC sp_OAMethod @imap, 'ThreadCmd', @jsonObj OUT, @threadAlg, @charset, @searchCriteria, @bUid
    EXEC sp_OAGetProperty @imap, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 = 0
      BEGIN
        EXEC sp_OAGetProperty @imap, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @imap
        RETURN
      END

    -- ...
    -- ...

    EXEC @hr = sp_OADestroy @jsonObj

    -- ------------------------------------------------------------------------
    -- Do the equivalent using QueryThread.
    -- Your application creates a new, empty JsonObject object which is passed 
    -- in the last argument and filled upon success.

    EXEC sp_OASetProperty @imap, 'SearchCharset', 'UTF-8'

    DECLARE @json int
    -- Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @json OUT

    DECLARE @success int
    EXEC sp_OAMethod @imap, 'QueryThread', @success OUT, @threadAlg, @searchCriteria, @bUid, @json
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @imap, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @imap
        EXEC @hr = sp_OADestroy @json
        RETURN
      END

    EXEC @hr = sp_OADestroy @imap
    EXEC @hr = sp_OADestroy @json


END
GO