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Exemple de script OLE Automation

Cette rubrique contient un exemple d'instruction Transact-SQL qui utilise les procédures stockées OLE Automation pour créer et utiliser un objet SQL-DMO SQLServer dans l'instance locale du moteur de base de données. Certains extraits du code sont utilisés comme exemples dans les rubriques de référence des procédures stockées système OLE Automation.

USE AdventureWorks2008R2;
GO
DECLARE @Object int;
DECLARE @HR int;
DECLARE @Property nvarchar(255);
DECLARE @Return nvarchar(255);
DECLARE @Source nvarchar(255), @Desc nvarchar(255);

-- Create a SQLServer object.
SET NOCOUNT ON;

-- First, create the object.
EXEC @HR = sp_OACreate N'SQLDMO.SQLServer',
    @Object OUT;
IF @HR <> 0
BEGIN
    -- Report the error.
    EXEC sp_OAGetErrorInfo @Object,
        @Source OUT,
        @Desc OUT;
    SELECT HR = convert(varbinary(4),@HR),
        Source=@Source,
        Description=@Desc;
    GOTO END_ROUTINE
END
ELSE
-- A DMO.SQLServer object has been successfully created.
BEGIN
    -- Specify Windows Authentication for connections.
    EXEC @HR = sp_OASetProperty @Object,
        N'LoginSecure',
        N'TRUE';
    IF @HR <> 0 GOTO CLEANUP

    -- Set a property.
    EXEC @HR = sp_OASetProperty @Object,
        N'HostName',
        N'SampleScript';
    IF @HR <> 0 GOTO CLEANUP

    -- Get a property using an output parameter.
    EXEC @HR = sp_OAGetProperty @Object, N'HostName', @Property OUT;
    IF @HR <> 0 
        GOTO CLEANUP
    ELSE
        PRINT @Property;

    -- Get a property using a result set.
    EXEC @HR = sp_OAGetProperty @Object,
        N'HostName';
    IF @HR <> 0 GOTO CLEANUP

    -- Get a property by calling the method.
    EXEC @HR = sp_OAMethod @Object,
        N'HostName',
        @Property OUT;
    IF @HR <> 0 
        GOTO CLEANUP
    ELSE
        PRINT @Property;

    -- Call the connect method.
    -- SECURITY NOTE - When possible, use Windows Authentication.
    EXEC @HR = sp_OAMethod @Object,
        N'Connect',
        NULL,
        N'localhost',
        NULL,
        NULL;
    IF @HR <> 0 GOTO CLEANUP

    -- Call a method that returns a value.
    EXEC @HR = sp_OAMethod @Object,
        N'VerifyConnection',
        @Return OUT;
    IF @HR <> 0
        GOTO CLEANUP
    ELSE
        PRINT @Return;
END

CLEANUP:
-- Check whether an error occurred.
IF @HR <> 0
BEGIN
    -- Report the error.
    EXEC sp_OAGetErrorInfo @Object,
        @Source OUT,
        @Desc OUT;
    SELECT HR = convert(varbinary(4),@HR),
        Source=@Source,
        Description=@Desc;
END

-- Destroy the object.
BEGIN
    EXEC @HR = sp_OADestroy @Object;
    -- Check if an error occurred.
    IF @HR <> 0 
    BEGIN
        -- Report the error.
        EXEC sp_OAGetErrorInfo @Object,
        @Source OUT,
        @Desc OUT;
        SELECT HR = convert(varbinary(4),@HR),
        Source=@Source,
        Description=@Desc;
    END
END

END_ROUTINE:
RETURN;
GO