When running a business logic handler at the subscriber, you can override SubscriberInserts, SubscriberUpdates and SubscriberDeletes. Are these methods called when data is changed coming from the server to client, from the client to the server, or in both directions?
Thanks,
Bryan
I'm trying to implement a custom conflict resolver by inheriting from
Microsoft.SqlServer.Replication.BusinessLogicSupport.BusinessLogicModule. The replication is between a SQL Server 2005 Express subscriber and a SQL Server 2005 publisher/distributer.
The problem is that the resolver class in the DLL will not load; although, it does appear to find the DLL. (If I rename the DLL I get a "file not found error"). The exact error message is:
Microsoft.SqlServer.Replication.ComErrorException
"Error loading custom class "MergeConflictHandler" from custom assembly "MergeConflictHandler",
Error : "Could not load type 'MergeConflictHandler' from assembly 'MergeConflictHandler, Version=1.0.2502.22393, Culture=neutral, PublicKeyToken=0403e50cc4dc27fa'."."}
I placed the DLL in the directory of the program that calls SynchronizationAgent.Synchronize and tried it with and without being registered in the GAC. There was no change. Interestingly, when I move the file out of that location, but register it in the GAC, the file is not found. Thinking it may be a security problem, I gave Everyone Read & Execute and Read privileges. I believe the class is actually instantiated by replmerge.exe, an apparantly unmanaged app, so I tried marking it ComVisible. No Luck.
I registered the resolver with the following T-SQL code:
sp_registercustomresolver @article_resolver = 'eClinical Notes Conflict Resolver'
, @is_dotnet_assembly = 'true'
, @dotnet_assembly_name = 'MergeConflictHandler'
, @dotnet_class_name = 'MergeConflictHandler'
, @resolver_clsid = Null
The resolver I've created is not much more than a shell at this point. It is pasted below, but I tried using the code found on MSDN character-for-character and had the same problem.
using System;
using System.Text;
using System.Data;
using System.Data.Common;
using Microsoft.SqlServer.Replication.BusinessLogicSupport;
namespace MergeConflictHandler
{
public class MergeConflictHandler :
Microsoft.SqlServer.Replication.BusinessLogicSupport.BusinessLogicModule
{
// Variables to hold server names.
private string m_PublisherName;
private string m_SubscriberName;
private string m_Artical_Name;
public MergeConflictHandler()
{
}
// Implement the Initialize method to get publication
// and subscription information.
public override void Initialize(string publisher, string subscriber, string distributor, string publisherDB, string subscriberDB,string articleName)
{
m_PublisherName = publisher;
m_SubscriberName = subscriber;
m_Artical_Name = articleName;
}
// Declare what types of row changes, conflicts, or errors to handle.
public override ChangeStates HandledChangeStates
{
get
{
return ChangeStates.UpdateConflicts;
}
}
public override ActionOnUpdateConflict UpdateConflictsHandler(DataSet publisherDataSet, DataSet subscriberDataSet, ref DataSet customDataSet, ref ConflictLogType conflictLogType, ref string customConflictMessage, ref int historyLogLevel, ref string historyLogMessage)
{
if (m_Artical_Name == "PatientAllergies")
{
// Accept the updated data in the Subscriber's data set and apply it to the Publisher.
}
return ActionOnUpdateConflict.AcceptPublisherData;
}
}
}
Does anyone have any thoughts or advice? (Help!)
hi,
i'm following steps described at: http://msdn2.microsoft.com/en-us/library/ms365150.aspx
all goes fine until step 6. of paragraph "To debug a business logic handler on a Web server using Web synchronization, or for a SQL Server Mobile Subscriber".
in my case when attaching to w3wp.exe i can only debug t-sql or native code. when i forcibly check 'managed' i get: "Unable to attach to the process. Access is denied". error picture:
http://img156.imageshack.us/my.php?image=debuggingerror7bp.jpg
i KNOW that the business logic handler gets loaded and executed because i am logging some info in it. i would be grateful for any suggestions.
TIA, kamil nowicki
Hi,
I am performing the Merge Replication of Timesheet table between SQL server 2005 and SQL CE on the Pocket PC. For one of the article, I would like to perform web synch for only those rows which have certain field set to true.
I am trying to use Business Logic Handler to implement this logic. I am using following code out of sample on MSDN web site. However I am not sure if this code gets executed for each row for a table during synch or does this get executed once for each table? The answer would help me write logic on applying synch changes only for few rows.
Thanks
public override ActionOnDataChange UpdateHandler(SourceIdentifier updateSource,
DataSet updatedDataSet, ref DataSet customDataSet, ref int historyLogLevel,
ref string historyLogMessage)
{
if (updateSource == SourceIdentifier.SourceIsPublisher)
{
//check the approved status of the timesheet
if (updatedDataSet.Tables["tbl_timesheets"].Rows[0]["ts_approved"] == true)
{
// Set the reference parameter to write the line to the log file.
historyLogMessage = updatedDataSet.Tables["tbl_timesheets"].Rows[0]["ts_id"].ToString();
// Set the history log level to the default verbose level.
historyLogLevel = 1;
// Accept the updated data in the Subscriber's data set and apply it to the Publisher.
return ActionOnDataChange.AcceptData;
}
else
{
return ActionOnDataChange.RejectData;
}
}
else
{
return base.UpdateHandler(updateSource, updatedDataSet,
ref customDataSet, ref historyLogLevel, ref historyLogMessage);
}
}
Any Help is appreciated.
Thanks
Hi,
I have 2 related tables in SQL 2005. I am using Business Logic Handler on one of those tables during Merge Replication to reject data for few rows during web synchronization. Once a row is rejected, I would like to run the Business Logic Handler for the related table to reject changes for the row with same foreign key as the rejected row in first table.
Not sure if I need to create separate Business Logic Handlers for each table or can it be achieved in a single Handler.
Also is it possible to get a list of rejected rows back from the handler?
Thanks for help.
I am currenly have a simple merge replication topology. The publisher-distibutor is SQL Server 2005 and the subscriber is a SQL Server Express. The type of subscription is non anonymous pull.
I made a custom business logic handler class that is trying the following:
When a new record is inserted in a published table on the pubsliher, some additional records are added in a differenct table in subscriber. Then the "InsertHandler" method returns "AcceptData" in order to allow the agent to add the new record in current table also.
So I am establishing a new connection to the subscriber and I am trying to add the additional recs in the different table. The problem is that this different table is also published as read-only on the subscriber. So my insert fails saying that table is not updatable.
Is there any way to bypass this problem?
In fact I realised in general that when my custom logic handler performs some DML operations on the subscriber, these are NOT considered as part of the replication e.g. the NOT FOR REPLICATION constraints and triggers are active for these operations.
Is this normal?
I have got a business logic update conflict handler working, but I have had to work round what appears to be a bug.
Please can someone confirm if this is indeed a bug €“ and if it is a known bug?
My conflict handler needs to take some columns from the publisher row and some from the subscriber row in the event of conflict.
I can quite happily generate a custom dataset which contains the winning row that I want €“ I can see that because I can step through the conflict handler with debug when a conflict occurs.
However, just returning ActionOnUpdateConflict.AcceptCustomConflictData from the UpdateConflictsHandler method does not set the publisher and subscriber columns correctly. I end up with different values on the two databases.
I have found that the only way to get the correct rows on both publisher and subscriber is to create a new ADO connection to the publisher and actually perform an update €“ updating all the modified columns. This now works reliably in my testing.
Fortunately, due to business rules the frequency of update conflicts are likely to be very infrequent, but I would very much like to avoid having to do the €˜unnecessary€™ update.
Notes:
I am using column level tracking €“ but I have seen the problem with row level tracking too
I have mainly been using SP1 but have repeated the test on a configuration using the SP2 CTP €“ and the problem occurs there too
The problem is not due to complex logic in my code. If the method just sets customDataSet = publisherDataSet.Copy and then returns ActionOnUpdateConflict.AcceptCustomConflictData, the changed and winning publisher values are not sent to the subscriber
Any thoughts would be much appreciated
Pocket PC 2003, SQL Compact Edition, SQL2005, IIS6.0
I implemented a business logic handler to deal with conflicts. When I deploy it on the SQL server which is also the web replication server, the logic handler seems working fine. However, if I deploy this handler to another web server. The logic handler failed to be loaded.
My enviroment settings are desribed as below.
Machine A, distributor, with database and publication. The business logic handler is deployed at C:Program FilesMicrosoft SQL Server90COMBusinessLogicHandler.dll. It's registered by using sp_registercustomresolver. The @assembly is specified as @assembly=C:Program FilesMicrosoft SQL Server90COMBusinessLogicHandler.dll';
Machine B, IIS server. The same business logic handler is deployed at C:Program FilesMicrosoft SQL Server90COMBusinessLogicHandler.dll on the Machine B itself.
When I ran the web replication, the Merge Agent reported the error as below.
Error loading custom assembly "C:Program FilesMicrosoft SQL Server90COMBusinessLogicHandler.dll", Error: "Could not load file or assembly 'C:\Program Files\Microsoft SQL Server\90\COM\BusinessLogicHandler.dll' or one of its dependencies. The given assembly name or codebase was invalid.
It seemed that the Merge Agent had trouble to find my logic handler because the path reported in the error log has two backward slashes. I have no idea where did that came from. I am not sure if that's the cause of the error. Without business logic handler. I had successfully finished web replication of Machine B to sync with Machine A. If I setup web replication directly on Machine A with business logic handler, I can successfully sync as well.
Does anyone has any idea about how to correctly deploy business logic handler on a web server?
Thanks,
Nigel
I have a task configured on the post execute event handler of a package expecting this task to be executed only once after the completion of all the other tasks in the package. But I found the task configured on the post execute event of the package getting executed as many times as the number of tasks in the package + 1 . Is there any workaround for this problem?
View 1 Replies View RelatedOr maybe it can't find something it's looking for to make my additional symetrical with everything else. This is from one of my businesslogic files. What causes Visual Studio to not allow me to add something here and have it behave like the other parameters/ I'm talking about ShortDesc. Visual studio inserted () and the Get instead of GET like all the others. It would not allow me to capitalize the "get". There has to be a reason for this. Currently my program is adding all of the fields except the ShortDesc to the table in my database. Does anyone have any thoughts as to why this is the case?
#Region "Pvt Members" Private _ArticleID As System.Int32 Private _UserID As System.Int32 Private _WebSiteID As System.Int32 Private _ArticleTitle As System.String Private _Author As System.String Private _ShortDesc As System.String Private _ArticleText As System.String Private _AnchorText As System.String Private _ShowInDirectory As System.Boolean Private _Active As System.Boolean Private _DateAdded As System.DateTime#End Region#Region "Properties" Public Property ArticleID As System.Int32 GET Return _ArticleID End Get Set(ByVal Value As System.Int32) _ArticleID= Value End Set End Property Public Property UserID As System.Int32 GET Return _UserID End Get Set(ByVal Value As System.Int32) _UserID= Value End Set End Property Public Property WebSiteID As System.Int32 GET Return _WebSiteID End Get Set(ByVal Value As System.Int32) _WebSiteID= Value End Set End Property Public Property ArticleTitle As System.String GET Return _ArticleTitle End Get Set(ByVal Value As System.String) _ArticleTitle= Value End Set End Property Public Property Author As System.String GET Return _Author End Get Set(ByVal Value As System.String) _Author= Value End Set End Property Public Property ShortDesc() As System.String Get Return _ShortDesc End Get Set(ByVal value As System.String) End Set End Property Public Property ArticleText As System.String GET Return _ArticleText End Get Set(ByVal Value As System.String) _ArticleText= Value End Set End Property Public Property AnchorText As System.String GET Return _AnchorText End Get Set(ByVal Value As System.String) _AnchorText= Value End Set End Property Public Property ShowInDirectory As System.Boolean GET Return _ShowInDirectory End Get Set(ByVal Value As System.Boolean) _ShowInDirectory= Value End Set End Property Public Property Active As System.Boolean GET Return _Active End Get Set(ByVal Value As System.Boolean) _Active= Value End Set End Property Public Property DateAdded As System.DateTime GET Return _DateAdded End Get Set(ByVal Value As System.DateTime) _DateAdded= Value End Set End Property #End Region
Hey guys,I have to import a csv file to my database and then add
some values to other fields based on these values. At present I use a
store procedure that does a bulk insert and then I use an update and
fetch inside the sql to perform these updates. I am not sure if this is
the best way. Is this bad, since some amount of busniess logic is in
the store procedure?If it is, how can I do this better?Thanks for the answer.
I am working with stored procedures to provide conditional business logic for a customer based on triggers. Is it possible for a stored procedure to execute an external program ie opening or distributing a crystal report?
View 9 Replies View RelatedI guess I just don't get the reasoning behind the new SqlDataSource control. Haven't we just spent the last decade or so evangelizing and learning how and why to separate business logic from the display in VB 6 and VS.NET? In this age of programming for disparate devices (desktop, mobile, PocketPC, etc.) when this separation makes more sense than ever, why is MS pushing us to go back to putting our logic and data access rules and objects back in the display? It doesn't make sense. Why would anyone do this? And why would all the experts and MVPs at ASP.NET, DevX, 4GuysFromRolla, etc., go along with this?
View 4 Replies View RelatedALTER TABLE [dbo].[bkrm_lendcoll] ADD CONSTRAINT
   ReqdCovgAmt_constraint33 CHECK   Â
( caseÂ
 when CovgAmt = 0 and  ReqdCovgAmt = 0 then 1
 when CovgAmt = 0 and  ReqdCovgAmt = 1 then 1
 when CovgAmt = 1 and  ReqdCovgAmt = 0 then 1
 when CovgAmt = 1 and  ReqdCovgAmt = 1 then 0
end =1
)
This is my first attempt to add a constraint for business logic. Â The desired behavior is that the two columns together have the same behavior as a radio button. Â (one can be true, the other true, both can be false, but both cannot be true.) I get this error when I attempt to update it.
The ALTER TABLE statement conflicted with the CHECK constraint "ReqdCovgAmt_constraint33". The conflict occurred in database "Std", table "dbo.lendcoll".
So, basically my question is, when you have two bit columns and want them to have the truth table such as described, how can I set a Check constraint to enforce this?
I have a merge replication topology that allows some subscribers (clients) to retreive a number for certain columns (ie invoice number, order number, etc).
I have implemented a custom business logic handler to check for inserts from the subscriber and before updating the server, I call a stored proc on the server to generate a new number. I update the data set and call ActionOnDataChange.AcceptCustomData. This works great for the publication db but I am trying to get this new number back into the subscription db. I am using web synchronization so I really don't have a connection back to the subscriber database.
Any Ideas? I was thinking about keeping track of the updates myself and build a sql string and somehow get that back to the subscriber to run updates for those columns... I am wondering if I am pushing the limits of the business logic handler? Was it designed to do this? Of course the easy answer is to modify my client application but I am trying to avoid that at this point.
Any help/suggestions would be greatly appreciated!
Hello,I stuck in a delimma.Where to put the business logic that involves only one updatebut N number of selects from N tables........with N where conditions
View 5 Replies View RelatedWhat is the way we could implement a business logic from a Table bystoring it statemnnets in a colums and defining an execute sql toexecute it.Some legal requirements make it diffcult for us to createmodify stored procdures so Iwant to have a process where we create newrows in a table and execute it to execute business logic.All views are welcome.Havin g one table two tables different approaches to store ststementsand execute them....Case logic how to implement it?Flags in the tble colums in the tablesetcThanksAjay Garg
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Thank you
Can anyone take me through synchronization of contacts within Business Contacts Outlook into Microsoft Small Business Accounts?
I run a stand alone PC with NO network. When SBA came SQL was also installed. Apparently you can synchronise Contacts within Business Contacts with SBA but both SBA & Outlook should work through the same SQL server.
Has anyone tried this?
Can someone walk me through the process?
Thanks
Debbie
I am the owner of a small business and run sports leagues on my website. I have been using a csv file to gather registrations from my webform and then manually importing them to Access. I also use the same method for collecting their results each week. Can I use SQL to automate my process? If so, where to I get the training I need to set that up? I'd like my customers to be able to log in to their account on the website and post their results (which attach to their name/profile). Then I'd like to extract that information in a report that I can post to the website. Or maybe have the customer sort the results by different criteria types.
Can I do that with SQL? More importantly, am I even in the right ballpark for getting this done?
Thanks to anyone who can give me a nudge in the right direction.
My table structure:
Aircraft_Id(PK, nchar(25),not null)
Service_Ceiling_ft (numeric(18,0), not null)
My Data:
Aircraft_Id Service_CeilingP_ft
F-14 Tomcat 53000
My Query:
SELECT 'Aircraft_Id, 'Service_Ceiling_ft'
FROM Combat
WHERE 'Service_Ceiling_ft' > '51000'
My result:
(No column name) (No column name)
Aircraft_Id Service_Ceiling_ft
I'm not getting any error messages or data. Any advice would be a great help.
thanks
US Navy - We are fueled, armed, and go for launch.
this is a seemingly simple query, but i've been googling around for a while and haven't been able to come up anything, probably because i simply can't explain what I'm trying to do
can someone please point me in the right direction? using sql server 2005.
tbl_vendorprice looks like:
id vend price
1 A 2.00
1 B 3.00
2 A 4.00
2 B 3.50
3 A 8.00
3 B 8.50
and this is what i want as a result
id vendA VendB
1 2.00 3.00
2 4.00 3.50
3 8.00 8.50
thanks
David
Charter Cable does not provide server technology to residential customers.
I know nothing about SQL. I believe that I read that it can be setup on my computer for testing web pages.
I may not even be in the right forum.
Would someone please direct me where to start?
Thanks
All help is appreciated.
Thanks
Is it possible to have a SqlParameter setup as an Output, and get it to return @@Identity without using a stored procedure?
I have an INSERT statement, written as TEXT in my code (at the time being, I cannot create stored procedures). I'm trying to find out how to return the created IDENTITY that was generated.
Can someone please explain to me how this works?
Thanks.
Hello, thanks for reading this.
I am trying to learn a bit about debveloping my own website, and I am in need of a basic direction on how to acomplish this task:
I have an local program running on my PC that creates an MS Access database export of my inventory. This export can be directly uploaded to my web server in a zip format.
My web site is developed in Coldfusion MX7, and uses a MS SQL 2005 database. What I would like to do is create somewhat of an "Auto update" for my website, exporting my access database and updating the MS SQL database automatically.
I really can use some good direction on this problem.
Thank you for any help in advance.
hi.
i am a c++ developer who requires to learn sql.
i have no other programs than the sql server that comes with visual studio pro 2005.
what
do i need to get/do to create a sql databse and to manipulate it in c++.
thank you.
Hi all. The company I work for is looking for a new SQL server. Where can I find information and or a tool for sizing information? By sizing information I mean how big a pile of hardware am I going to need to run MS SQL for x number of connected users with x size database, etc. I've been tooling around the internet and MS' site but can't find any info on this.
Can anyone shed some light for me?
Happy Friday afternoon, all,
My task is seemingly simple. I have data on the server in MS Excel Files. I need to get the data into multiple tables in a SQL Server db on the same server.
I have been only working with SSIS for a bit, so please bear with me.
I can load the data directly from the Excel worksheet to one table, but I need to run an already defined stored procedure on the data from Excel before putting it into tables. I need to loop over all the rows and run the data from each row through the stored procedure.
So, I think I need an Execute SQL Task withing a For Each Loop, but neither is available on the Data Flow page, and I don't see how to use them in the control flow page. I don't see that any of the Data Flow transformations which are available on the dataflow page will do what I need.
I can have created the data flow Source-Query and the Destination-Query; it's the bit in between that has me hung up.
Can anyone please give me a high level overview of what I need to do, or point me to an example of something similar to what I am trying to do?
Thanks and have a great weekend,
Kathryn
Hi,
In the SqlDataSource control if I go to the SelectQuery property and I set one parameter with the “direction� property to “Output� the result doesn’t display in the control, why?
Points:
The procedure witch is in the selectquery property the parameter in it is set to output two.
Has anyone created a stored procedure that notifies a customer that their order_status has been changed from 'submitted' to 'backordered' or from 'backordered' to 'shipped'? Once written, how does the sp get automatically executed? Does anyone have an example or a book/site with an example?
--Thanks in advance.
We lost our Datawarehouse developer that set up this application for us, so I am now in charge... ick, and don't know what I'm doing really.
Lately no messages leaving sys.transmission_queue... all have transmission_status of: "One or more messages could not be delivered to the local service targeted by this dialog."
Setup looks like this:
CREATE MESSAGE TYPE XmlSubmission VALIDATION = WELL_FORMED_XML;
CREATE CONTRACT XmlContract (XmlSubmission SENT BY INITIATOR);
CREATE QUEUE ReceiverXmlQueue WITH STATUS = ON, ACTIVATION (PROCEDURE_NAME = MMRS.MMRS.WrapXmlProcessor, MAX_QUEUE_READERS = 1, EXECUTE AS SELF );
CREATE QUEUE SenderXmlQueue;
CREATE SERVICE Sender ON QUEUE SenderXmlQueue;
CREATE SERVICE Receiver ON QUEUE ReceiverXmlQueue(XmlContract);
ALTER QUEUE ReceiverXmlQueue WITH STATUS = on
Service Broker is enabled on database, and I've tried dropping and recreating these objects to no avail.
When functioning, these messages get recieved and procecessed into a staging SQL table, storing the XML to be loaded up into the relational tables.
Any ideas or clues for troubleshooting would be greatly appreciated!
Hi all,
I have problem to change direction of the textbox, i need to change the driction as bottom to top.
But in report has provide the tb-rl and tb-lr. these are changed the direction as top to bottom.
anybody worked on it , please help.
Thanks
Murugan A