How can I edit CLR SQL Server User-Defined Function

Hello, Help!!

On my SQL server I have a couple of 'CLR SQL Server User-Defined Functions' that were written on an old PC. the Visual Studio project that created these CLR functions, has gone.

I need to make changes to the functions, as one of the things that it does is remove line breaks, I really need to replace line breaks with a space...

So my question is this, how on SSMS or Visual Studio 2008, can I link to and edit these CLR functions?

I'm guessing this is more a visual studio question than a SSMS question?

Please advise.

Thanks
garethtnashAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Guy Hengel [angelIII / a3]Billing EngineerCommented:
you cannot "edit" the CLR functions without the original c# / vb.net code.

you may be able to get the reverse engineered code from the assembly:
http://reflector.red-gate.com/download.aspx

to find the assembly:
http://serverfault.com/questions/139703/extracting-a-sqlclr-assembly
0
garethtnashAuthor Commented:
Hello AngelIII,

Thanks,

Still a little confused though..

Using this -

select * from sys.assembly_modules I can see

object_id      assembly_id      assembly_class      assembly_method      null_on_null_input      execute_as_principal_id
1931153925      65545      UserDefinedFunctions      CleanHTML      0      NULL
1947153982      65545      UserDefinedFunctions      CleanHTMLAtt      0      NULL

It is CLEANHTML and CleanHTMLAtt, that i want to recode.

Thanks
0
garethtnashAuthor Commented:
Hello again,

So I've just discovered, in Visual Studio on the server, if I create a new project and connect to the database, I can open functions and see both of the CLR functions, if I double click one of these I get -

using System;
using System.Data.Sql;
using System.Data.SqlTypes;
using System.Collections.Generic;
using Microsoft.SqlServer.Server;
using System.Text;
using System.Text.RegularExpressions;
public partial class UserDefinedFunctions
{
    [Microsoft.SqlServer.Server.SqlFunction]
    [return: SqlFacet(MaxSize = -1)]
    public static SqlString CleanHTML(SqlString s)
    {
        if (s.IsNull) return String.Empty;
        string s1 = s.ToString().Trim();
        if (s1.Length == 0) return String.Empty;
        StringBuilder tmpS = new StringBuilder(s1.Length);
        //striping out the "control characters"
        if (!Char.IsControl(s1[0])) tmpS.Append(s1[0]);
        for (int i = 1; i <= s1.Length - 1; i++)
        {
            if (Char.IsControl(s1[i]))
            {
                if (s1[i - 1] != ' ') tmpS.Append(' ');
            }
            else
            {
                tmpS.Append(s1[i]);
            }
        }
        string result = tmpS.ToString();
        //finding the HTML tags and replacing them with an empty string
        string pattern = @"<[^>]*?>|<[^>]*>";

        Regex rgx = new Regex(pattern);
        result = rgx.Replace(result, String.Empty);
        result = result.Replace(@"&amp;amp;", @"&amp;");
        result = result.Replace(@"&amp;", @"&");
        result = result.Replace(@"&pound;", @"£");
        result = result.Replace(@"&#163;", @"£");
        result = result.Replace(@"&quot;", @"""");
        result = result.Replace(@"&apos;", @"'");
        result = result.Replace(@"&", @"&amp;");
        result = result.Replace(@"£", @"&pound;");
        result = result.Replace(@"""", @"&quot;");
        result = result.Replace(@"'", @"&apos;");
        //more replaces here
        return result;
    }

    [Microsoft.SqlServer.Server.SqlFunction]
    [return: SqlFacet(MaxSize = -1)]
    public static SqlString CleanHTMLAtt(SqlString s)
    {
        string result = s.ToString();

        //keep all HTML Entities but remove attributes 
        string pattern = @"(<[a-z][^ >/]*)(?:[^>/]|/(?!>))*";
        Regex rgx = new Regex(pattern);
        result = rgx.Replace(result, "$1");

        //If the input has already been HTML encoded or double encoded, unencode it -
        result = result.Replace("&amp;amp;", "&amp;");// removes all ... (tab etc)
        result = result.Replace("&amp;", "&");// removes all ... (tab etc)
        result = result.Replace("&nbsp;", " ");// removes all ... (tab etc)
        result = result.Replace("&pound;", "£");
        result = result.Replace("&#163;", "£");
        result = result.Replace("&apos;", "'");// removes all ... (tab etc)
        result = result.Replace("&quot;", @"""");// removes all ... (tab etc)

        //Remove tabs, double spaces etc -
        result = result.Replace("\t", " ");// replace tabs with a space 
        result = result.Replace("  ", " ");// replace tabs with a space 

        //Replace line breaks with < /br>
        pattern = "\r\n|\r|\n";
        rgx = new Regex(pattern);
        result = rgx.Replace(result, "<br />");// replace any carriage returns with either <br />

        //Once the string is clean, encode special characters
        result = result.Replace("&", "&amp;");
        result = result.Replace("£", "&pound;");
        result = result.Replace(@"""", "&quot;");
        result = result.Replace("'", "&apos;");
        result = result.Replace("&amp;bull;", "&bull;");

        return result;
    }
}

Open in new window



it opens in a tab (with a blue padlock) named Fuction1.cs


This looks to me as if it creates 2 CLR functions? Anything I can do with this?

Thanks AngelIII
0
Newly released Acronis True Image 2019

In announcing the release of the 15th Anniversary Edition of Acronis True Image 2019, the company revealed that its artificial intelligence-based anti-ransomware technology – stopped more than 200,000 ransomware attacks on 150,000 customers last year.

Guy Hengel [angelIII / a3]Billing EngineerCommented:
yes, this creates the 2 CLR functions, visibly 1 assembly containing both.

and yes, the code there is the code you need to recompile the assembly
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
garethtnashAuthor Commented:
Thanks AngelIII

One question that has always... confused me.

Should I be HTML Encoding the data I store on the database, or just HTML encoding it when i write it to the HTML page?

Thanks
0
Guy Hengel [angelIII / a3]Billing EngineerCommented:
you can do it at whatever level you want, but not without "user code", but with the .NET framework functions:
http://msdn.microsoft.com/en-us/library/system.web.httputility.htmlencode.aspx
0
garethtnashAuthor Commented:
Sorry for the late vote, been out of the office
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft SQL Server 2008

From novice to tech pro — start learning today.