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LINQ to Objects and Buffer

I was debugging a problem a couple of days ago, when I learned something interesting. I had some...

Author: Alex D James Date: 01/21/2009

The problem with Function Signatures

So I was reading Stefan Tilkov’s latest post, about link and self. Good stuff. Now the bit that...

Author: Alex D James Date: 01/17/2009

Composable Services

Dru Sellers just used a term I haven’t heard before, Composable Services. For me it the very timely...

Author: Alex D James Date: 01/17/2009

SaveChanges(false)

Most of the time the Entity Framework (EF) can manage transactions for you. Every time you Add an...

Author: Alex D James Date: 01/11/2009

Virtuoso – Entity Framework compatible ADO.NET provider

Now this is worth a mention. Kingsley has produced a ADO.NET provider for their virtuoso product...

Author: Alex D James Date: 01/11/2009

LINQ… the board game

About a week ago I was wandering through Crossroads mall in Bellevue, and with my wife’s new camera...

Author: Alex D James Date: 01/09/2009

Nullable=”False”… but when exactly?

If you look at the EDM and in particular the metadata it considers important, one thing is clear:...

Author: Alex D James Date: 01/07/2009

Opinionated Software and the Paradox of Choice

In my last post I briefly mentioned the Paradox of Choice.The alert amongst you will have noticed a...

Author: Alex D James Date: 12/18/2008

DefiningQuery versus QueryView

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */...

Author: Alex D James Date: 12/18/2008

Blogging database scripts

For a while now I've been using a blogging database for demos, presentations, videos etc. For...

Author: Alex D James Date: 12/17/2008

State vs Statement of Intent

Well I went to Vegas for Dev Connections. What an experience. Never been there before, but for first...

Author: Alex D James Date: 11/24/2008

Andrew Peters joining the EF team

Just a short one today, but a good one. Andrew Peters is on his way to Vancouver soon to join the...

Author: Alex D James Date: 09/02/2008

Sample Oracle Provider for EF

Jarek has released his sample provider for Oracle here. In his post he talks about a few of the more...

Author: Alex D James Date: 06/23/2008

Roger Jennings - and his LINQ and Data feed

Just in case some of you don't know, I thought I should point out Roger's Blog. I refer to Roger's...

Author: Alex D James Date: 05/22/2008

Why even try?

You know you've met a visionary when they start talking about solving problems others think are too...

Author: Alex D James Date: 05/20/2008

MEST - What is it and how does it work?

MEST stands for Multiple EntitySets per Type. It is one of the features of the Entity Framework that...

Author: Alex D James Date: 05/16/2008

Fantasy Soccer - Part 4 - Architectural Overview

Okay this Fantasy Soccer thing has got me thinking. What is this thing going to look like from about...

Author: Alex D James Date: 05/13/2008

Fantasy Soccer - part 3 - Unit of Measure

Today I spent a bit of time working on the data model for my fantasy soccer application. I don't...

Author: Alex D James Date: 05/02/2008

Fantasy Soccer - Part 2 - an overview of the rules

Yes, yes I know the real name of Soccer is Football, but I don't want there to be any confusion for...

Author: Alex D James Date: 04/30/2008

Real world App - Part 1 - Choosing an Application

Okay so it has been a while since I posted my Statement of Intent. Time to get on with things. The...

Author: Alex D James Date: 04/29/2008

Intellisense : What properties are required?

Yesterday I was talking to a Simon, another super smart dev on the EF team, and he raised a big...

Author: Alex D James Date: 04/09/2008

Statement of Intent

This blog has been a little quiet for a while now. With good reason though. I've been doing the hard...

Author: Alex D James Date: 03/27/2008

Colin Meek talks about his EF Extensions

Colin is a super smart colleague of mine, who works as a developer on the Entity Framework. So it is...

Author: Alex D James Date: 03/26/2008

Maybe there is more

Michel Perfetti, has taken my little Maybe thingie and gone a lot further, by using expression tree...

Author: Alex D James Date: 03/03/2008

Maybe I'm just a little slow...

But I only just realized that extension methods are cool for avoiding NullReferenceExceptions. We...

Author: Alex D James Date: 02/28/2008

Julie Lerman talks to DotNetRocks about the Entity Framework

So if you don't already know Julie is a hugely respected member of the EF community. She does...

Author: Alex D James Date: 02/26/2008

Associations with Payloads - closing the loop

I'm assuming you've read part 1 and part 2, if not why not? Just kidding, they will make this post a...

Author: Alex D James Date: 02/25/2008

All the power at your disposal

I invite you to take a look at this forum post from 'Benys' It illustrates the power of the Entity...

Author: Alex D James Date: 02/25/2008

Associations with Payloads - part Deux

Okay so the 'cat is out of the bag' you CAN do associations with Payloads... Sort of. Now for an...

Author: Alex D James Date: 02/25/2008

Associations with Payloads

Those of you who know what I am talking about will probably also know that we have been saying...

Author: Alex D James Date: 02/24/2008

Rolling your own SQL Update on top of the Entity Framework - Part 4

Okay so we've got to the interesting bit at last. We've hooked up our extension method, we've got a...

Author: Alex D James Date: 02/11/2008

Rolling your own SQL Update on-top of the Entity Framework - Part 3

Okay, okay, okay... yes I know this is the slowest moving series in the history of blogging (sorry...

Author: Alex D James Date: 02/11/2008

LINQ to non-enumerable?

So I was reading Wes' latest post about Monad's a while back (which incidentally is well worth a...

Author: Alex D James Date: 01/15/2008

Rolling your own SQL Update on top of the Entity Framework - Part 2

Okay so it has taken me a while to get to the second part of this post... but as they say better...

Author: Alex D James Date: 01/15/2008

Rolling your own SQL Update on-top of the Entity Framework - Part 1

One of the current limitations of the Entity Framework, is that in order to modify an entity you...

Author: Alex D James Date: 12/07/2007

ObjectQuery.ToTraceString() and possibilities...

So in Beta3 of the EntityFramework (due out very soon) the team added a new function to...

Author: Alex D James Date: 12/04/2007

Hydrating a DataTable from an EntityDataReader - Part 2

See yesterday's post for some context... So we can't rely on EntityDataReader.GetSchemaTable() and a...

Author: Alex D James Date: 11/28/2007

Hydrating a DataTable from an EntityDataReader - part 1

Okay so about 5 posts back I promised: "...At this point we have an enumeration of all EntitySets...

Author: Alex D James Date: 11/27/2007

Dude where is my query going to run?

One of the key decisions with LINQ to Entities (L2E) is that all predicates in an L2E expression...

Author: Alex D James Date: 11/26/2007

T CastByExample(object o, T example)

So earlier today I was lamenting that an anonymous type can't be shared between functions with Wes...

Author: Alex D James Date: 11/22/2007

EntityConnectionStringBuilder

In my last Metadata post I suggested using a string template to create an EntityConnection...

Author: Alex D James Date: 11/20/2007

Compiled Queries and the EntityFramework

For a while LINQ to SQL has had compiled Queries... and now in Beta3 of the Entity Framework, due...

Author: Alex D James Date: 11/19/2007

CommandBehavior.SequentialAccess

So why does this: EntityDataReader reader = command.ExecuteReader(); Throw an exception? Well it is...

Author: Alex D James Date: 11/15/2007

Using a random model at runtime

In my last post I hinted that using the Entity Frameworks Value layer and Metadata allows you to...

Author: Alex D James Date: 11/13/2007

Metadata, Objects and Values

One of the things I am doing at the moment is writing a bunch of Entity Framework code with one...

Author: Alex D James Date: 11/13/2007

Sharepoint tricks

So Alex Henderson, who took over running the Auckland Architecture chats from me, has been busy...

Author: Alex D James Date: 11/09/2007

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