Stream seek error

Hi all!

Since Npgsql RC1, we started to receive some error reports about problems when closing connections. The typical stack trace looked like this:

System.NotSupportedException : This stream does not support seek operations.

at System.Net.Sockets.NetworkStream.Seek(Int64 offset, SeekOrigin origin)

at System.IO.BufferedStream.FlushRead()
at System.IO.BufferedStream.WriteByte(Byte value)
−
at Npgsql.NpgsqlQuery.WriteToStream(Stream outputStream) in C:\Npgsql\Npgsql2\src\Npgsql\NpgsqlQuery.cs:line 62
−
at Npgsql.NpgsqlReadyState.QueryEnum(NpgsqlConnector context, NpgsqlCommand command) in
C:\Npgsql\Npgsql2\src\Npgsql\NpgsqlReadyState.cs:line 64
−
at Npgsql.NpgsqlConnector.ReleasePlansPortals() in C:\Npgsql\Npgsql2\src\Npgsql\NpgsqlConnector.cs:line 373
−
at Npgsql.NpgsqlConnectorPool.UngetPooledConnector(NpgsqlConnection Connection, NpgsqlConnector Connector)
in C:\Npgsql\Npgsql2\src\Npgsql\NpgsqlConnectorPool.cs:line 541
−
at Npgsql.NpgsqlConnectorPool.ReleasePooledConnector(NpgsqlConnection Connection, NpgsqlConnector Connector) in
C:\Npgsql\Npgsql2\src\Npgsql\NpgsqlConnectorPool.cs:line 284
−
at Npgsql.NpgsqlConnection.Close() in C:\Npgsql\Npgsql2\src\Npgsql\NpgsqlConnection.cs:line 584
−

This seems to be caused by some out of sync problem with Npgsql. I proposed a solution in our bug tracking about this problem.

Please, give it a try and let me know if it solves the problem.

Thanks in advance.

UUID datatype and COPY IN/OUT support added to cvs

Hi all! It was just added support to uuid datatype in cvs head. This type will be available in next Postgresql release 8.3. Thanks to David Bachmann for his patch! You can get more info about this patch in this mailing list post . Also was added support for copy in and copy out operations. Now, users can provide streams which can be copied directly to and from Postgresql tables! Thanks to Kalle Hallivuori for providing a patch! Thanks to Truviso for giving support to Kalle. More info about that including a demo and ready to use compiled Npgsql.dll versions can be found here . That's it! As soon as we get more features added, I will post info about them here. Stay tuned! :)

Using Entity Framework 6 with Npgsql 2.1.0

UPDATE (2014-05-19): Marek Beneš noticed a problem in the default connection factory config. It is fixed now. Thanks, Marek! UPDATE (2014-02-20): I created a new post explaining how to get Npgsql 2.1.0. Although this post is about EF 6, I'd like to talk about our current situation to support both EF 6 and EF4.x which explain why there are some subtle changes between EF 4.x and EF 6.x App.config settings. Support for EF versions 4.x and 6.x Sometime after we started to work on Npgsql 2.1.0, we started to add code to support EF6 and decided to reorganize our Entity Framework support code. Shay created a pull request to organize this change and isolate the EF code out of core Npgsql code. The result was the creation of two separated assemblies: Npgsql.EntityFramework.dll for EF6 and above; Npgsql.EntityFrameworkLegacy.dll for EF4.x. Only when using Npgsql with EF6 you will need to reference Npgsql.EntityFramework.dll assembly. This is needed because the EF

Initial EF-6 support added to Npgsql

In my last post , I said there is a pull request by Pēteris Ņikiforovs to add support for EF-6 to Npgsql. Yesterday, I merged this pull request to the master branch of Npgsql . With this merge, Npgsql has officially initial support for EF-6! How to compile For now, in order to compile Npgsql to use EF-6, you have to open the solution file NpgsqlEF6.sln. Later, as suggested by Pēteris Ņikiforovs , the idea is that we create a new configuration inside main project solution instead of maintain 2 separated projects. Another thing you will need to compile Npgsql is the latest release of EntityFramework assembly through NuGet: PM> Install-Package EntityFramework -Pre That's it! Now you will be able to play with Npgsql and EF-6. Check out my previous post about how to use Npgsql with EntityFramework. I'd like to thank Pēteris Ņikiforovs for his patch. And maxbundchen for his patch about Open/Close events needed for EF-6. Please, give it a try and let me know how it

Francisco Figueiredo Jr Activities

Search This Blog