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Gary's Blog

JSON Serialisation with XPO and JSON.Net

JSON , or javaScript Object Notation, is a lightweight, data interchange format, it also seems to have become the defacto standard for serialising and deserialising information when talking to web based APIs such as Twitter and Foursquare. So far so good...

Posted Sep 14 2011, 02:37 PM by Gary Short (DevExpress) with | with 3 comment(s)

Filed under: XPO, JSON, Twitter

XPO - N-Tier, Instance/Field-level Security And Much More in XPO (Coming in v2010 vol 2)

Psst, hey you! Yes you… can you keep a secret? You can? Good. Remember we said in our 2010 Roadmap “The same goes for improvements to security: we shall be adding enough support for the security scenarios needed for XAF in the first part of the year,...

Posted Nov 01 2010, 06:19 PM by Gary Short (DevExpress) with | with 13 comment(s)

Filed under: XPO, v2010.2, IDataStore, IObjectLayer, ISerializableObjectLayer

XPO - Explicit Transactions (Coming in v2010 Vol 2)

Coming in 2010.2 is the new ExplicitUnitOfWork. This class derives from UnitOfWork and allows you to easily use explicit transactions in XPO . The advantage of this is that it works with objects as if they were already stored in the database, meaning...

Posted Oct 26 2010, 02:20 PM by Gary Short (DevExpress) with | with 6 comment(s)

Filed under: XPO, v2010.2

XPO – Training London UK, January 2011

Following hard on the heels of my post about 3rd party training for XAF , comes news of a new training event for XPO . Oliver Sturm is offering an “Expert XPO” class in London in the new year. Oliver says of the class: “This class is a deep dive into...

Posted Oct 14 2010, 05:23 PM by Gary Short (DevExpress) with | with 1 comment(s)

Filed under: XPO, Training

XPO – Uncoupled from ADO.Net Providers (coming in V2010 Vol 2)

We all know that loosely coupled is better than tightly coupled, but that’s not a principle we’ve been able to follow all the time here at Devexpress. For example, XPO is pretty tightly coupled to ADO.Net, which is not at all ideal. That is something...

Posted Oct 13 2010, 03:57 PM by Gary Short (DevExpress) with | with 4 comment(s)

Filed under: XPO, v2010.2

XPO – Only Update Modified Properties (coming in V2010 Vol 2)

As you may or may not know, when you save a persistent object to the database, XPO includes all of the properties in the update command, regardless of whether or not they have been modified. The reason for this is that it doesn’t make any difference to...

Posted Oct 13 2010, 02:56 PM by Gary Short (DevExpress) with | with 19 comment(s)

Filed under: XPO, v2010.2

XPO – Direct SQL Queries

In the comments to my previous blog post about executing stored procedures from XPO , you asked how you could execute a SQL query from within a persistent class, so in this post I thought I’d show you how it is done. Taking an example from the previous...

Posted Oct 08 2010, 04:57 PM by Gary Short (DevExpress) with | with 17 comment(s)

Filed under: XPO, v2010.2

Linq Server Mode and Entity Framework 4.0 (coming in V2010 Vol 2)

We’ve supported Server Mode for our controls for some time now and it’s worked, out-of-the-box, for almost any Language-Integrated Query (LINQ) provider. For example the LinqServerModeSource can be used together with our WPF and Windows Forms grids, and...

Posted Aug 23 2010, 06:59 PM by Gary Short (DevExpress) with | with 7 comment(s)

Filed under: XPO, v2010.2

XPO – F# Lists and Seqs Oh My!

As we developers move to doing less OO programming and more functional programming – and we will be making that move over time, trust me – then we’ll look to that paradigm’s best practices to help us make the transition smoothly. One of the best practices...

Posted Jul 26 2010, 03:05 PM by Gary Short (DevExpress) with | with 2 comment(s)

Filed under: XPO

Using XPO From F#

Check out the latest XPO video on how to use XPO from F#. F# is the new first class language in Visual Studio 2010, it brings you type safe, succinct, efficient and expressive functional programming language on the .NET platform. It is a simple...

Posted Jun 08 2010, 05:08 PM by Gary Short (DevExpress) with | with 9 comment(s)

Filed under: XPO

XPO – Skip and New DateTime Functions V2010 Vol 1

XPO is getting some cool new functions in 10.1. Firstly, the guys have implemented Skip functionality to allow you to skip a specified number of records. This feature, along with others to help improve performance on slow connections, will be enabled...

Posted Apr 06 2010, 02:22 PM by Gary Short (DevExpress) with | with 4 comment(s)

Filed under: XPO, V2010 V1

XPO and Distributed Databases

In this sneak peak post we’ll take a look at a new feature for XPO , direct from the “Devexpress Labs”. For sometime now the guys in the lab have been trying to solve the problem of how to make distributed databases more ubiquitous, and it looks like...

Posted Apr 01 2010, 11:39 AM by Gary Short (DevExpress) with | with 9 comment(s)

Filed under: XPO

XPO, Bing, Twitter and the TARDIS

As you may know, Twitter recently introduced geocoding into their tweets, so now when you tweet, if you do so from a device with GPS capabilities, your position is recorded along with your post. That got me thinking… since I travel around a lot, I wonder...

Posted Mar 03 2010, 11:59 AM by Gary Short (DevExpress) with | with 1 comment(s)

Filed under: XPO

Santa Gets it Done With XPO

After my last post I said we’d take a look at one to many associations next time, and that’s what we are doing to do now. With it coming up to Christmas I thought we would write a little application to give Santa a hand with his deliveries – I mean the...

Posted Dec 16 2009, 08:29 PM by Gary Short (DevExpress) with | with 12 comment(s)

Filed under: XPO

XPO Rocks Your World With Earthquakes

In the last post I made, looking at analysing weather information using XPO , one of the commenters asked if we could see more examples using different types of associations between objects, so I thought I’d start off by posting something on one to one...

Posted Dec 01 2009, 10:48 AM by Gary Short (DevExpress) with | with 9 comment(s)

Filed under: XPO

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This Blog

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Gary's Blog

JSON Serialisation with XPO and JSON.Net

XPO - N-Tier, Instance/Field-level Security And Much More in XPO (Coming in v2010 vol 2)

XPO - Explicit Transactions (Coming in v2010 Vol 2)

XPO – Training London UK, January 2011

XPO – Uncoupled from ADO.Net Providers (coming in V2010 Vol 2)

XPO – Only Update Modified Properties (coming in V2010 Vol 2)

XPO – Direct SQL Queries

Linq Server Mode and Entity Framework 4.0 (coming in V2010 Vol 2)

XPO – F# Lists and Seqs Oh My!

Using XPO From F#

XPO – Skip and New DateTime Functions V2010 Vol 1

XPO and Distributed Databases

XPO, Bing, Twitter and the TARDIS

Santa Gets it Done With XPO

XPO Rocks Your World With Earthquakes