Re: RTF to TEXT - Database Discussion Boards

Sebastian T Xavier6-Jun-10 20:45

6-Jun-10 20:45

I have a RTF field in my SQL 2005 table, I need to convert it to Text and display it. After a quick research I got the following method... create function dbo.RTF2TXT(@in varchar(8000)) RETURNS varchar(8000) AS BEGIN

DECLARE @object int DECLARE @hr int DECLARE @out varchar(8000)

-- Create an object that points to the SQL Server EXEC @hr = sp_OACreate 'RICHTEXT.RichtextCtrl', @object OUT EXEC @hr = sp_OASetProperty @object, 'TextRTF', @in EXEC @hr = sp_OAGetProperty @object, 'Text', @out OUT EXEC @hr = sp_OADestroy @object return @out

END GO

select dbo.RTF2TXT('{\rtf1\ansi\ansicpg1252\uc1 aaa}')

But Here I am getting only NULL as result... What could be the issue, please suggest

Thanks

Re: RTF to TEXT

Mycroft Holmes6-Jun-10 23:29

Mycroft Holmes

6-Jun-10 23:29

Well if the line wrap has not deceived me then the function does nothing because it is commented out.

You seem to have 4 EXEC strung together in a single line that is commented out!

Do you have any idea what you are doing, sp_OACreate is an OLE Automation procedure. I can't use it because of security permissions so I would not be surprised if that will also kill this.

Never underestimate the power of human stupidity
RAH

Re: RTF to TEXT

Sebastian T Xavier6-Jun-10 23:40

Sebastian T Xavier

6-Jun-10 23:40

Thanks for your response.
I don't think, the line wrap will create issues. I have removed those comments & tried it.
Actually I was trying to convert the Rich text type string to plain text while
fetching records.
Can you suggest any better approach to convert a string from rich text to plain text in sql server.

Thanks once again

Sebastian

Re: RTF to TEXT

Sebastian T Xavier6-Jun-10 23:43

Sebastian T Xavier

6-Jun-10 23:43

Hello, One more thing

can't we use following code to allow execution of sp_OACreate

sp_configure 'show advanced options', 1;
GO
RECONFIGURE;
GO
sp_configure 'Ole Automation Procedures', 1;
GO
RECONFIGURE;
GO

Thanks

Sebastian

Re: RTF to TEXT

J4amieC6-Jun-10 23:42

J4amieC

6-Jun-10 23:42

sp_OACreate is the devil.

This is NOT something that a database should be doing - load the RTF data to your business layer and convert it there.

Re: RTF to TEXT

Sebastian T Xavier6-Jun-10 23:51

Sebastian T Xavier

6-Jun-10 23:51

Thanks for your reply.

This method also I have tried.
What I have intended to do is to create a class library , add the following code;

public String ConvertRtftoText(RichTextBox rtb)
        {
            String strText = "";
            try
            {
                strText = rtb.Text;
            }
            catch (Exception Ex)
            {
                // do nothing
            }
            return strText;
        }

& call this as a CLR stored procedure.
But the problem which I faced is , when I tried to execute the below code

CREATE ASSEMBLY getTextfromRTF
from '\\ustech39\Shared\BackendRTFHandler.dll'
WITH PERMISSION_SET = UNSAFE

I got another error

Warning: The Microsoft .Net frameworks assembly 'system.windows.forms, version=2.0.0.0, culture=neutral, publickeytoken=b77a5c561934e089, processorarchitecture=msil.' you are registering is not fully tested in SQL Server hosted environment.
Warning: The Microsoft .Net frameworks assembly 'system.drawing, version=2.0.0.0, culture=neutral, publickeytoken=b03f5f7f11d50a3a, processorarchitecture=msil.' you are registering is not fully tested in SQL Server hosted environment.
Msg 10301, Level 16, State 1, Line 1
Assembly 'BackendRTFHandler' references assembly 'accessibility, version=2.0.0.0, culture=neutral, publickeytoken=b03f5f7f11d50a3a.', which is not present in the current database. SQL Server attempted to locate and automatically load the referenced assembly from the same location where referring assembly came from, but that operation has failed (reason: 2(The system cannot find the file specified.)). Please load the referenced assembly into the current database and retry your request.

modified on Monday, June 7, 2010 9:19 AM

Re: RTF to TEXT

Mycroft Holmes7-Jun-10 0:56

Mycroft Holmes

7-Jun-10 0:56

So do as Jamie suggested, move the conversion to your business layer where it belongs and get it out of the database.

Why do you want to inflict another layer of abstraction between you nd your data, inplementing the CLR for this is just wrong.

Never underestimate the power of human stupidity
RAH

Re: RTF to TEXT

Sebastian T Xavier7-Jun-10 1:22

Sebastian T Xavier

7-Jun-10 1:22

Hi Mycroft Holmes
My intension was to avoid looping through the records in front end.
thanks for the suggestion

Sebastian

Re: RTF to TEXT

Mycroft Holmes7-Jun-10 1:30

Mycroft Holmes

7-Jun-10 1:30

IMHO you have your priorities completely wrong, to save looping the records you are willing to saddle your self with OLE or the CLR, a cursor would be better than that and I hate cursors.

You could convert the content to varchar and then check each character for a-z and punctuation. Nasty but should be doable.

Never underestimate the power of human stupidity
RAH

Re: RTF to TEXT

Eddy Vluggen7-Jun-10 1:59

Eddy Vluggen

7-Jun-10 1:59

Sebastian T Xavier wrote:
My intension was to avoid looping through the records in front end.

Why not do the conversion on the fly, just before the data is required in the BL? Does the data "have" to be re-stored in the database as plain text?

If the answer is yes, consider writing a specialized application to do the conversion once. Another alternative would be a CLR-UDF in Sql Server; you'd load the RTF text into a RichTextBox and return it's plain-text contents.

I are Troll Suspicious | :suss:

Re: RTF to TEXT

Sebastian T Xavier7-Jun-10 3:19

Sebastian T Xavier

7-Jun-10 3:19

Hello Eddy,

please see an earlier post in this chain..

Click

Will this same issue happen to CLR-UDF?
please advise

Thanks for your thoughts

Sebastian

Re: RTF to TEXT

Eddy Vluggen7-Jun-10 3:48

Eddy Vluggen

7-Jun-10 3:48

Sebastian T Xavier wrote:
Will this same issue happen to CLR-UDF?

Aw, yes; the WinForms assembly isn't considered "safe" in Sql Server. Installing the CLR-UDF (when using WinForms components) is described here[^], along with some other viable solutions.

I are Troll Suspicious | :suss:

Re: RTF to TEXT

Sebastian T Xavier7-Jun-10 4:25

Sebastian T Xavier

7-Jun-10 4:25

Good information....
Thank you

Sebastian

Re: RTF to TEXT

Eddy Vluggen7-Jun-10 4:59

Eddy Vluggen

7-Jun-10 4:59

You're welcome Smile | :)

Has anyone run SQL Server 2000 Developer's Edition on Windows 2008?

Xiangyang Liu 刘向阳3-Jun-10 12:52

Xiangyang Liu 刘向阳

3-Jun-10 12:52

Has anyone run SQL Server 2000 Developer's Edition on Windows 2008? If yes, any problem?

My .NET Business Application Framework
My Younger Son & His "PET"

INLINE FUNCTION

It_tech3-Jun-10 4:18

It_tech

3-Jun-10 4:18

Hi all,

I have a problem in getting the one below to work. I think i have used the right syntax. But keeps coming with error on EXEC Lline...

CREATE FUNCTION Summary (@Month varchar(30),@Year varchar(30),@ShowType varchar(30))
RETURNS TABLE
AS
RETURN
With
EXECUTE C_WEB_sp_RevenueSummaryByShow 'April', '2010', '3'

Go

Thansk for your time

Re: INLINE FUNCTION

J4amieC3-Jun-10 4:39

J4amieC

3-Jun-10 4:39

It_tech wrote:
But keeps coming with error on EXEC Lline...

Do you think the error message might help us debug your problem?

Re: INLINE FUNCTION

It_tech3-Jun-10 5:51

It_tech

3-Jun-10 5:51

Many thanks for your help.

Here is the error message:

Msg 156, Level 15, State 1, Procedure Summary, Line 6
Incorrect syntax near the keyword 'EXECUTE'.

Re: INLINE FUNCTION

J4amieC3-Jun-10 6:06

J4amieC

3-Jun-10 6:06

The error message is somewhat descriptive. The main problem you're having is that you wont be able to return the result of a stored procedure call from a function. Its just not possible in SQLServer.

Re: INLINE FUNCTION

It_tech3-Jun-10 6:26

It_tech

3-Jun-10 6:26

Thanks Once again.Its Much appreciated.What is it about extended Stored Procedures?I hope we can execute them in table valued functions.

Re: INLINE FUNCTION

J4amieC3-Jun-10 6:34

J4amieC

3-Jun-10 6:34

As far as I know, you cant execute any SP's in a Function.

Re: INLINE FUNCTION

It_tech3-Jun-10 7:00

It_tech

3-Jun-10 7:00

Thanks.What is the way around then?

Re: INLINE FUNCTION

Mycroft Holmes3-Jun-10 14:20

Mycroft Holmes

3-Jun-10 14:20

Don't use a function!

Never underestimate the power of human stupidity
RAH

Re: INLINE FUNCTION

J4amieC3-Jun-10 21:30

J4amieC

3-Jun-10 21:30

Without knowing what you're trying to achieve, I cant answer that.

Re: INLINE FUNCTION

It_tech3-Jun-10 23:45

It_tech

3-Jun-10 23:45

Hi There,

I tried changing it to a Stored procedure but still have a problem

ALTER PROCEDURE [dbo].[sp_LiveRevenueGraph]
-- Add the parameters for the stored procedure here
@ShowType NVARCHAR(20),
@Statistic NVARCHAR(20)
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;

DECLARE @data TABLE ([Week] NVARCHAR(120), Sunday DECIMAL(12,5), Monday DECIMAL(12,5), Tuesday DECIMAL(12,5), Wednesday DECIMAL(12,5),
Thursday DECIMAL(12,5), Friday DECIMAL(12,5), Saturday DECIMAL(12,5), SubTotal DECIMAL(12,5))

-- Insert statements for procedure here
-- INSERT INTO @data EXECUTE C_WEB_sp_RevenueAchievedByShow 0, @ShowType;

END

Error : --INSERT EXEC statement cannot be nested

Please advice.

Thanks

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