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• Show iPad keyboard on select, focus or always (jQuery)

  - by Ryan

  I have a web app that is using jQuery to replace the RETURN key with TAB so that when I user presses return the form is not submitted but rather the cursor moves to the next text field. This works in all browsers but only 1/2 works on the iPad. On the iPad the next field is highlighted but the keyboard is hidden. How can I keep the keyboard visible or force it somehow? Here's my code (thanks to http://thinksimply.com/blog/jquery-enter-tab): function checkForEnter (event) { if (event.keyCode == 13) { currentBoxNumber = textboxes.index(this); if (textboxes[currentBoxNumber + 1] != null) { nextBox = textboxes[currentBoxNumber + 1] nextBox.focus(); nextBox.select(); event.preventDefault(); return false; } } } Drupal.behaviors.formFields = function(context) { $('input[type="text"]').focus(function() { $(this).removeClass("idleField").addClass("focusField"); }); $('input[type="text"]').blur(function() { $(this).removeClass("focusField").addClass("idleField"); }); // replaces the enter/return key function with tab textboxes = $("input.form-text"); if ($.browser.mozilla) { $(textboxes).keypress (checkForEnter); } else { $(textboxes).keydown (checkForEnter); } };

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• Why C++ is (one of) the best language to learn at first [closed]

  - by AlexV

  C++ is one of the most used programming language in the world since like 25+ years. My first job as programmer was in C++ and I coded in C++ everyday for nearly 4 years. Now I do mostly PHP, but I will forever cherish this C++ background. C++ has helped me understand many "under the hood" features/behaviors/restrictions of many other (and different) programming languages like PHP and Delphi. I'm a full time programmer for 6+ years now and since I have a quite varied programming background I often get questions by "newbies" as where to start to become a "good" programmer. I think C++ is one of the best language to start with because it gives you a real usefull experience that will last and will teach you how things work under the hood. It's not the easier one to learn for a newbie, but in my opinion it's the one who will reward the most in long term. I would like to know your opinion on this matter to add to my arguments when I guide "newbies". After this introduction, here's my question : Why C++ is for you (one of) the best language to learn at first. Since it's subjective, I've marked this question as community wiki.

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• T4MVC Optional Parameter Inferred From Current Context

  - by Itakou

  I have read the other post about this at T4MVC OptionalParameter values implied from current context and I am using the latest T4MVC (2.11.1) which is suppose to have the fix in. I even checked checked to make sure that it's there -- and it is. I am still getting the optional parameters filled in based on the current context. For example: Let's say I have a list that is by default ordered by a person's last name. I have the option to order by first name instead with the URL http://localhost/list/stuff?orderby=firstname When I am in that page, I want to go back to order by first name with the code: @Html.ActionLink("order by last name", MVC.List.Stuff(null)) the link I wanted was simply http://localhost/list/stuff without any parameters to keep the URL simple and short - invoking default behaviors within the action. But instead the orderby is kept and the url is still http://localhost/list/stuff?orderby=firstname Any help would be great. I know that in the most general cases, this does remove the query parameter - maybe I do have a specific case where it was not removed. I find that it only happens when I have the URL inside a page that I included with RenderPartial. My actual code is <li>@Html.ActionLink("Recently Updated", MVC.Network.Ticket.List(Model.UI.AccountId, "LastModifiedDate", null, null, null, null, null))</li> <li>@Html.ActionLink("Recently Created", MVC.Network.Ticket.List(Model.UI.AccountId, "CreatedDate", null, null, null, null, null))</li> <li>@Html.ActionLink("Most Severe", MVC.Network.Ticket.List(Model.UI.AccountId, "MostSevere", null, null, null, null, null))</li> <li>@Html.ActionLink("Previously Closed", MVC.Network.Ticket.List(Model.UI.AccountId, "LastModifiedDate", null, "Closed", null, null, null))</li> the problem happens when someone clicks Previously Closed and and go to ?status=closed. When they click Recently Updated, which I want to the ?status so that it shows the active ones, the ?status=closed stays. Any insight would be greatly appreciated.

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• Sending custom app logs to developer

  - by Templar

  I'm planning to release a new app in the future. I have a custom logging function which logs some application data (not crashes) into a file (location manager state, app foreground-background transitions, main actions...). These logs helped me a lot to debug problems which were app-related, but not causing a crash. Until now these were in the documents directory (shared in iTunes) and the testers sent them to me after they saw some incorrect behaviors, however I don't want to share them anymore because this directory contains the app's database too. I'd like to obtain these logs even when the app will be on App Store, but I don't know how this should be done. As I wrote, it is a new app and even after the test phase may exist minor bugs. I know that the users can report problems in iTunes or on the Dev site, but without a detailed scenario or log it is really hard to correct a bug. Should I make some kind of in-app bug report functionality (even if this creates a wrong user impression) ? How is this usually handled ? Thanks

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• Windows Presentation Foundation 4.5 Cookbook Review

  - by Ricardo Peres

  As promised, here’s my review of Windows Presentation Foundation 4.5 Cookbook, that Packt Publishing kindly made available to me. It is an introductory book, targeted at WPF newcomers or users with few experience, following the typical recipes or cookbook style. Like all Packt Publishing books on development, each recipe comes with sample code that is self-sufficient for understanding the concepts it tries to illustrate. It starts on chapter 1 by introducing the most important concepts, the XAML language itself, what can be declared in XAML and how to do it, what are dependency and attached properties as well as markup extensions and events, which should give readers a most required introduction to how WPF works and how to do basic stuff. It moves on to resources on chapter 2, which also makes since, since it’s such an important concept in WPF. Next, chapter 3, come the panels used for laying controls on the screen, all of the out of the box panels are described with typical use cases. Controls come next in chapter 4; the difference between elements and controls is introduced, as well as content controls, headered controls and items controls, and all standard controls are introduced. The book shows how to change the way they look by using templates. The next chapter, 5, talks about top level windows and the WPF application object: how to access startup arguments, how to set the main window, using standard dialogs and there’s even a sample on how to have a irregularly-shaped window. This is one of the most important concepts in WPF: data binding, which is the theme for the following chapter, 6. All common scenarios are introduced, the binding modes, directions, triggers, etc. It talks about the INotifyPropertyChanged interface and how to use it for notifying data binding subscribers of changes in data sources. Data templates and selectors are also covered, as are value converters and data triggers. Examples include master-detail and sorting, grouping and filtering collections and binding trees and grids. Last it covers validation rules and error templates. Chapter 7 talks about the current trend in WPF development, the Model View View-Model (MVVM) framework. This is a well known pattern for connecting things interface to actions, and it is explained competently. A typical implementation is presented which also presents the command pattern used throughout WPF. A complete application using MVVM is presented from start to finish, including typical features such as undo. Style and layout is covered on chapter 8. Why/how to use styles, applying them automatically,  using the many types of triggers to change styles automatically, using Expression Blend behaviors and templates are all covered. Next chapter, 9, is about graphics and animations programming. It explains how to create shapes, transform common UI elements, apply special effects and perform simple animations. The following chapter, 10, is about creating custom controls, either by deriving from UserControl or from an existing control or framework element class, applying custom templates for changing the way the control looks. One useful example is a custom layout panel that arranges its children along a circumference. The final chapter, 11, is about multi-threading programming and how one can integrate it with WPF. Includes how to invoke methods and properties on WPF classes from threads other than the main UI, using background tasks and timers and even using the new C# 5.0 asynchronous operations. It’s an interesting book, like I said, mostly for newcomers. It provides a competent introduction to WPF, with examples that cover the most common scenarios and also give directions to more complex ones. I recommend it to everyone wishing to learn WPF.

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• Silverlight Cream for March 28, 2010 -- #823

  - by Dave Campbell

  In this Issue: Michael Washington, Andy Beaulieu, Bill Reiss, jocelyn, Shawn Wildermuth, Cameron Albert, Shawn Oster, Alex Yakhnin, ondrejsv, Giorgetti Alessandro, Jeff Handley, SilverLaw, deepm, and Kyle McClellan. Shoutouts: If I've listed this before, it's worth another... Introduction to Prototyping with SketchFlow (twelve video series) and on the same page is Creating a Beehive Game with Behaviors in Blend 3 (ten video series) Shawn Oster announced his Slides + Code + Video from ‘An Introduction to Developing Applications for Microsoft Silverlight’ from MIX10 Tim Heuer announced earlier this week: Silverlight Client for Facebook updated for Silverlight 4 RC Nikhil Kothari announced the availability of his MIX10 Talk - Slides and Code András Velvárt backed up his great MIX09 effort with MIX10.Zoomery.com... everything in one DZ effort... thanks András! Andy Beaulieu posted his material for his Code Camp 13 in Waltham: Windows Phone: Silverlight for Casual Games From SilverlightCream.com: Silverlight MVVM - The Revolution Has Begun Michael Washington did an awesome tutorial on MVVM and Silverlight creating a simple Silverlight File Manager. The post has a link to the tutorial at CodeProject... great tutorial. Windows Phone 7 + Silverlight Performance Andy Beaulieu has a post up we should all bookmark... getting a handle on the graphics performance of our app on WP7. Great examples, and external links. Space Rocks game step 6: Keyboard handling Bill Reiss has a post up about keyboard input for the WP7 game he's building ... this is Episode 6 ... you're working along with him, right? Panoramic Navigation on Windows Phone 7 with No Code! jocelyn at InnovativeSingapore (I found this by way of Shawn's post), has a Panoramic Navigation template out there for WP7 for all of us to grab... great post about it too. My First WP7 Application Shawn Wildermuth has been playing with WP7 development and has his XBOX Game library app up on the emulator... all with source of course Silverlight and Windows Phone 7 Game Cameron Albert built a web-based game called 'Shape Attack' and also did it for WP7 to compare the performance... check it out for yourself, but hey, it's game source for the phone... cool :) Changing the Onscreen Keyboard layout in Silverlight for Windows Phone using InputScope Shawn Oster has a cool post on changing the keyboard on WP7 to go along with what you're expecting the user to type... how cool is that?? Deep Zoom on WP7 Check out the quick work Alex Yakhnin made of putting DeepZoom on WP7... all source included. How to: Create a sketchy Siverlight GroupBox in Blend/SketchFlow ondrejsv has the xaml up to take Tim Greenfield's GroupBox control and insert it into SketchFlow. Silverlight / Castle Windsor – implementing a simple logging framework Giorgetti Alessandro posted about CastleWindsor for Silverlight, and a logging system inherited from LevelFilteredLogger in the absence of Log4Net. DomainDataSource in a ViewModel Jeff Handley responds to a common forum post about using DomainDataSource in a ViewModel. Read his comments on AutoLoad and ElementName Bindins. Digital Jugendstil TextEffect (Art Nouveau) - Silverlight 3 SilverLaw has a cool TagCloud demo and a UserControl he calls Art Nouveau up at the Expression Gallery... not for a business app, I don't think :) Configuring your DomainService for a Windows Phone 7 application deepm discusses RIA Services for WP7 and how to enable a WP7 app to communicate with a DomainService. Writing a Custom Filter or Parameter for DomainDataSource Kyle McClellan by way of Jeff Handley's blog, is discussing how to leverage the custom parameter types you defined in the previous version of RIA Services. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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• Home Energy Management & Automation with Windows Phone 7

  A number of people at Clarity are personally interested in home energy conservation and home automation. We feel that a mobile device is a great fit for bringing this idea to fruition. While this project is merely a concept and not directly associated with Microsofts Hohm web service, it provides a great model for communicating the concept. I wanted to take the idea a step further and combine saving energy in your home with the ability to track water usage and control your home devices. I designed an application that focuses on total home control and not just energy usage. Application Overview By monitoring home consumption in real time and with yearly projections users can pinpoint vampire devices, times of high or low consumption, and wasteful patterns of energy use. Energy usage meters indicate total current consumption as well as individual device consumption. Users can then use the information to take action, make adjustments, and change their consumption behaviors. The app can be used to automate certain systems like lighting, temperature, or alarms. Other features can be turned on an off at the touch of a toggle switch on your phone, away from home. Forget to turn off the TV or shut the garage door? No problem, you can do it from your phone. Through settings you can enable and disable features of the phone that apply to your home making it a completely customized and convenient experience. To be clear, this equates to more security, big environmental impact, and even bigger savings.   Design and User Interface  Since this panorama application is designed for win phone 7 devices, it complies with the UI Design and Interaction Guide for wp7. I developed the frame and page hierarchy from existing examples. The interface takes advantage of the interactive nature of touch screens with slider controls, pivot control views, and toggle switches to turn on and off devices (not shown in mockup). I followed recommendations for text based elements and adapted the tile notifications to display the most recent user activity. For example, the mockup indicates upon launching the app that the last thing you did was program the thermostat. This model is great for quick launching common user actions. One last design feature to point out is the technical reasons for supplying both light and dark themes for the app. Since this application is targeting energy consumption it only makes sense to consider the effect of the apps background color or image on the phones energy use. When displaying darker colors like black the OLED display may use less power, extending battery life. Other Considerations For now I left out options of wind and solar powered energy options because they are not available to everyone. Renewable energy sources and new technologies associated with them are definitely ideas to keep in mind for a next iteration. Another idea to explore for such an application would be to include a savings model similar to mint.com. In addition to general energy-saving recommendations the application could recommend customized ways to save based on your current utility providers and available options in your area. If your television or refrigerator is guilty of sucking a lot of energy then you may see recommendations for energy star products that could save you even more money! Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Oracle BI and XS Energy Drinks – Don’t Miss the Amway Presentation!

  - by Michelle Kimihira

  By Maria Forney Amway is a global leader in the direct sales industry with $10.9B in annual sales in more than 100 countries and territories. The company has implemented a global BI framework that provides accurate, consistent, and timely insights to support global, regional and local analytical research, business planning, performance measurement and assessment. Oracle BI EE is used by 1500 employees across Amway sales, marketing, finance, and supply chain business units as well as Amway affiliates in Europe, Russia, South Africa, Japan, Australia, Latin America, Malaysia, Vietnam, and Indonesia. Last week, I spoke with Lead Data Analyst with Amway Global Sales, Dan Arganbright, and IT Manager with Amway BI Competency Center, Mike Olson, about their upcoming presentation at Oracle OpenWorld in San Francisco. Scheduled during a prime speaking slot on Monday, October 1 at 12:15pm in Moscone West, 2007, Dan and Mike will discuss their experience building Amway’s Distributor Consulting solution, powered by Oracle BI EE. You can find more information here. As background, Amway offers people an opportunity to own their own businesses and consumers exclusive products in health and wellness, beauty and home care.  The Amway internal Sales organization is charged with consulting leadership-level Distributors to help them with data insights and ultimately grow their business. Until recently, this was a resource-intense process of gathering and formatting data. In some markets, it took over 40 hours to collect the data and produce the analysis needed for one consultation session. Amway began its global BI journey in 2006 and since then the company has migrated from having multiple technology providers and integration points to an integrated strategic vendor approach. Today, the company has standardized on Oracle technology for BI.  Amway has achieved cost savings through the retirement of redundant technology platforms. In addition, Mike’s organization has led the charge to align disparate BI organizations into a BI Competency Center.  The following diagram highlights the simplicity of the standardized architecture of Amway today. Dubbed Distributor Consulting, Amway has developed a BI solution using the Oracle technology stack to help Distributor leaders grow their businesses. The Distributor Consulting solution provides over 40 metrics for Sales staff to provide data-driven insights on the Distributors and organizations they support.  Using Oracle BI EE, Exadata, and Oracle Data Integrator, Amway provides customized and personalized business intelligence, and the Oracle BI EE dashboards were developed by the Amway Sales organization, which demonstrates business empowerment of the technology. Amway is also leveraging the power of BI to drive business growth in all of its markets.  A new set of Distributor Segmentation metrics are enabling a better understanding of distributor behaviors. A Global Scorecard that Amway developed provides key metrics at a market and global level for executive-level discussions. Product Analysis teams can now highlight repeat purchase rates, product penetration and the success of CRM campaigns. In the words of Dan and Mike, the addition of Exadata 11 months ago has been “a game changer.”  Amway has been able to dramatically reduce complexity, improve performance and increase business productivity and cost savings. For example, the number of indexes on the global data warehouse was reduced from more than 1,000 to less than 20.  Pulling data for the highest level distributors or the largest markets in the company now can be done in minutes instead of hours.  As a result, IT has shifted from performance tuning and keeping the system operational to higher-value business-focused activities. •       “The distributors that have been introduced to the BI reports have found them extremely helpful. Because they have never had this kind of information before, when they were presented with the reports, they wanted to take action immediately!”  -     Sales Development Manager in Latin America Without giving away more, the Amway case study presentation will be one of the unique customer sessions at OpenWorld this year. Speakers Dan Arganbright and Mike Olson have planned an interactive and entertaining session on Monday October 1 at 12:15pm in Moscone West, 2007. I’ll see you there!

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• Oracle BI and XS Energy Drinks – Don’t Miss the Amway Presentation!

  - by Maria Forney

  Amway is a global leader in the direct sales industry with $10.9B in annual sales in more than 100 countries and territories. The company has implemented a global BI framework that provides accurate, consistent, and timely insights to support global, regional and local analytical research, business planning, performance measurement and assessment. Oracle BI EE is used by 1500 employees across Amway sales, marketing, finance, and supply chain business units as well as Amway affiliates in Europe, Russia, South Africa, Japan, Australia, Latin America, Malaysia, Vietnam, and Indonesia. Last week, I spoke with Lead Data Analyst with Amway Global Sales, Dan Arganbright, and IT Manager with Amway BI Competency Center, Mike Olson, about their upcoming presentation at Oracle OpenWorld in San Francisco. Scheduled during a prime speaking slot on Monday, October 1 at 12:15pm in Moscone West, 2007, Dan and Mike will discuss their experience building Amway’s Distributor Consulting solution, powered by Oracle BI EE. You can find more information here. As background, Amway offers people an opportunity to own their own businesses and consumers exclusive products in health and wellness, beauty and home care.  The Amway internal Sales organization is charged with consulting leadership-level Distributors to help them with data insights and ultimately grow their business. Until recently, this was a resource-intense process of gathering and formatting data. In some markets, it took over 40 hours to collect the data and produce the analysis needed for one consultation session. Amway began its global BI journey in 2006 and since then the company has migrated from having multiple technology providers and integration points to an integrated strategic vendor approach. Today, the company has standardized on Oracle technology for BI.  Amway has achieved cost savings through the retirement of redundant technology platforms. In addition, Mike’s organization has led the charge to align disparate BI organizations into a BI Competency Center.  The following diagram highlights the simplicity of the standardized architecture of Amway today. Dubbed Distributor Consulting, Amway has developed a BI solution using the Oracle technology stack to help Distributor leaders grow their businesses. The Distributor Consulting solution provides over 40 metrics for Sales staff to provide data-driven insights on the Distributors and organizations they support.  Using Oracle BI EE, Exadata, and Oracle Data Integrator, Amway provides customized and personalized business intelligence, and the Oracle BI EE dashboards were developed by the Amway Sales organization, which demonstrates business empowerment of the technology. Amway is also leveraging the power of BI to drive business growth in all of its markets.  A new set of Distributor Segmentation metrics are enabling a better understanding of distributor behaviors. A Global Scorecard that Amway developed provides key metrics at a market and global level for executive-level discussions. Product Analysis teams can now highlight repeat purchase rates, product penetration and the success of CRM campaigns. In the words of Dan and Mike, the addition of Exadata 11 months ago has been “a game changer.”  Amway has been able to dramatically reduce complexity, improve performance and increase business productivity and cost savings. For example, the number of indexes on the global data warehouse was reduced from more than 1,000 to less than 20.  Pulling data for the highest level distributors or the largest markets in the company now can be done in minutes instead of hours.  As a result, IT has shifted from performance tuning and keeping the system operational to higher-value business-focused activities. •       “The distributors that have been introduced to the BI reports have found them extremely helpful. Because they have never had this kind of information before, when they were presented with the reports, they wanted to take action immediately!”  -     Sales Development Manager in Latin America Without giving away more, the Amway case study presentation will be one of the unique customer sessions at OpenWorld this year. Speakers Dan Arganbright and Mike Olson have planned an interactive and entertaining session on Monday October 1 at 12:15pm in Moscone West, 2007. I’ll see you there!

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• Last GUID used up - new ScottGuID unique ID to replace it

  - by Eilon

  You might have heard in recent news that the last ever GUID was used up. The GUID {FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF} was just consumed by a soon to be released project at Microsoft. Immediately after the GUID's creation the word spread around the Microsoft campuses around the globe. Microsoft's approximately 100,000 worldwide employees then started blogging, tweeting, and facebooking about the dubious "achievement." The following screenshot shows GUIDGEN (the Windows tool for creating GUIDs) with the last ever GUID. All GUIDs created by projects at Microsoft must be registered in a central repository for record keeping. This allows quick-fix engineers, security engineers, anti-malware developers, and testers to do a quick look up of an unknown GUID and find out if it belongs to Microsoft. The following screenshot shows the Microsoft GUID Tracker internal application and the last few GUIDs being used up by various Microsoft projects. What is perhaps more interesting than the news about the GUID is the project that used that last GUID. The recent announcements regarding the development experience for the Windows Phone 7 Series (WP7S) all involve free editions of Visual Studio 2010. One of the lesser known developer tools is based on a resurrected project that many of you are probably familiar with, but have never used. The tool is in fact Microsoft Bob 7 Series (MB7S). MB7S is an agent-based approach for mobile phone app development. The UI incorporates both natural language interfaces and motion gesture behaviors, similar to the Windows Phone 7 Series “Metro” interface. If it works, it will help to expand the breadth of mobile app developers. After the GUID: The ScottGuID It came as no big surprise that eventually the last GUID would be used up. Knowing this, a group of engineers at Microsoft has designed, implemented, and tested a replacement to the GUID: The ScottGuID. There are several core principles of the ScottGuID: 1. The concepts used in ScottGuIDs must be easily understood by a developer who is already familiar with GUIDs 2. There must exist a compatibility layer between ScottGuIDs and GUIDs 3. A ScottGuID must be usable in a practical manner in non-computing environments 4. There must exist ScottGuID APIs for all common platforms: Win32/Win64/WinCE, .NET (incl. Silverlight), Linux, FreeBSD, MacOS (incl. iPhone OS), Symbian, RIM BlackBerry, Google Android, etc. 5. ScottGuIDs must never run out ScottGuID use cases One of the more subtle principles of the ScottGuID is principle #3. While technically a GUID could be used in any environment, it was not practical to do so in terms of data entry and error detection. In order to have the ScottGuID be a true universal ID it must be usable in non-computing environments. Prior to the announcement of the ScottGuID there have been a number of until-now confidential projects. One of the tools that will soon become public is ScottGuIDGen, which is in essence an updated version of GUIDGEN that can create ScottGuIDs. The following screenshot shows a sample ScottGuID. To demonstrate the various applications of the ScottGuID there were test deployments around the globe. The following examples are a small showcase of the applications that have already been prototyped. Log in to Hotmail: Pay for gas: Sign in to Twitter: Dispense cat food: Conclusion I hope that this brief introduction to the ScottGuID shows how technology can continue to move forward, even when it appears there is a point that cannot be passed. With a small number of principles, a team of smart engineers, and a passion for "getting it right" the ScottGuID should last well past our lifetimes. In the coming months expect further announcements regarding additional developer tools, samples, whitepapers, podcasts, and videos. Please leave a comment on this post if you have any questions about the ScottGuID or what you would like to see us do with it. With ScottGuID, the possibilities are nearly endless and we want to stretch their reach as far as possible.

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• Silverlight Cream for December 12, 2010 -- #1008

  - by Dave Campbell

  In this Issue: Michael Washington, Samuel Jack, Alfred Astort(-2-), Nokola(-2-), Avi Pilosof, Chris Klug, Pete Brown, Laurent Bugnion(-2-), and Jaime Rodriguez(-2-, -3-). Above the Fold: Silverlight: "Sharing resources and styles between projects in Silverlight" Chris Klug WP7: "Windows Phone Application Performance at Silverlight Firestarter" Jaime Rodriguez Training: "Silverlight View Model (MVVM) - A Play In One Act" Michael Washington Shoutouts: Koen Zwikstra announced the availability of the first Silverlight Spy 4 Preview 1 Gavin Wignall announced the Launch of Festive game built with Silverlight 4, hosted on Azure ... free to play. From SilverlightCream.com: Silverlight View Model (MVVM) - A Play In One Act Michael Washington has an interesting take on writing a blog post with this 'play' version of Silverlight View Models and Expression Blend with a heaping dose of Behaviors added in for flavoring. Build a Windows Phone Game in 3 days – Day 1 Samuel Jack is attempting to build a WP7 game in 3 days including downloading the tools and an XNA book... interesting to see where he's headed wth this venture. 4 of 10 - Make sure your finger can hit the target and text is legible Continuing with a series of tips from the folks reviewing apps for the marketplace via Alfred Astort is this number 4 -- touch target size and legible text. 5 of 10 - Give feedback on touch and progress within your UI Alfred Astort's number 5 is also up, and continues the touch discussion with this tip about giving the user feedback on their touch. Fantasia Painter Released for Windows Phone 7 + Tips Nokola took the release of his Fantasia Painter on WP& as an opportunity not only to blog about the fact that we can go buy it, but has a blog full of hints and tips that he gathered while working on it. Games for Windows Phone 7 Resources: Reducing Load Times, RPG Kit; Other Nokola also blogged about the release of the new games education pack, and gives up the cursor he uses in his videos after being asked... The simplest way to do design-time ViewModels with MVVM and Blend. Avi Pilosof attacks the design-time ViewModel issue in Blend with a 'no code' solution. Sharing resources and styles between projects in Silverlight Chris Klug is talking about sharing resources and styles across a large Silverlight project... near and dear to my heart at this moment. Dynamically Generating Controls in WPF and Silverlight Pete Brown has a post up that's generated some interest... creating controls at runtime... and he's demonstrating several different ways for both Silverlight and WPF #twitter for Windows Phone 7 protips (#wp7) Laurent Bugnion was posting these great tips for Twitter for WP7 and rolled all 16 of them up into a blog post... check them and the app out... Increasing touch surface (#wp7dev) Laurent Bugnion's most current post should be of great interest to WP7 devs... providing more touch surface for your user's fat fingers, err, I mean their fat fingerings :) ... great information and samples ... and interesting it is a fail point as listed by Alfred Astort above. Windows Phone Application Performance at Silverlight Firestarter This material from Jaime Rodriguez actually hit prior to his Firestarter presentation, but should be required reading for anyone doing a WP7 app... great Performance tips from the trenches... slide deck, cheat-sheet, and code. UpdateSourceTrigger on Windows Phone data bindings Another post from Jaime Rodriguez actually went through a couple revisions already.. how about a WP7 TextBox that fires notifications to the ViewModel when the text changes? ... would you like a behavior with that? Details on the Push Notification app limits Jaime Rodriguez has yet another required reading post up on Push Notification limits ... what it really entails and how you can be a good WP7 citizen by the way you program your app. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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• Silverlight Cream for February 07, 2011 -- #1043

  - by Dave Campbell

  In this Issue: Roy Dallal, Kevin Dockx, Gill Cleeren, Oren Gal, Colin Eberhardt, Rudi Grobler, Jesse Liberty, Shawn Wildermuth, Kirupa Chinnathambi, Jeremy Likness, Martin Krüger(-2-), Beth Massi, and Michael Crump. Above the Fold: Silverlight: "A Circular ProgressBar Style using an Attached ViewModel" Colin Eberhardt WP7: "Isolated Storage" Jesse Liberty Lightswitch: "How To Create Outlook Appointments from a LightSwitch Application" Beth Massi Shoutouts: Gergely Orosz has a summary of his 4-part series on Styles in Silverlight: Everything a Developer Needs To Know From SilverlightCream.com: Silverlight Memory Leak, Part 2 Roy Dallal has part 2 of his memory leak posts up... and discusses the results of runnin VMMap and some hints on how to make best use of it. Using a Channel Factory in Silverlight (instead of adding a Service Reference). With cows. Kevin Dockx has a post up for those of you that don't like the generated code that comes about when adding a service reference, and the answer is a Channel Factory... and he has an example app in the post that populates a list of cows... honest ... check it out. Getting ready for Microsoft Silverlight Exam 70-506 (Part 4) Gill Cleeren has Part 4 of his deep-dive into studying for the Silverlight Certification exam. This time out he's got probably half a gazillion links for working with data... seriously! Sync unlimited instances of one Silverlight application How about a cross-browser sync of an unlimited number of instances of the same Silverlight app... Oren Gal has just that going on, and discusses his first two attempts and how he finally honed in on the solution. A Circular ProgressBar Style using an Attached ViewModel Wow... check out what Colin Eberhardt's done with the "Progress Bar" ... using an Attached View Model which he discussed in a post a while back... these are awesome! WP7 - Professional Audio Recorder Rudi Grobler discusses an audio recorder for WP7 that uses the NAudio audio library for not only the recording but visualization. Isolated Storage Jesse Liberty's got his 30th 'From Scratch' post up and this time he's talking about Isolated Storage. Learning OData? MSDN and Shawn Wildermuth has the videos for you! Shawn Wildermuth produced a couple series of videos for MSDN on OData: Getting Started and Consuming OData... get the link on Shawn's post. Creating Sample Data from a Class - Page 1 Kirupa Chinnathambi shows us how to use a schema of your own design in Blend... yet still have Blend produce sample data A Pivot-Style Data Grid without the DataGrid Jeremy Likness discusses the lack of an open-source grid with dynamic columns ... let him know if you've done one! ... and then he continues on to demonstrate his build-out of the same. Synchronize a freeform drawing and a real path creation Martin Krüger has a few new samples up in the Expression Gallery. This first is taking mouse movement in an InkPresenter and creating path statements from it in a canvas and playing them back. How to: use Storyboard completed behaviors Martin Krüger's next post is about Storyboards and firing one off the end of another, in Blend... so he ended up producing a behavior for doing that... and it's in the Expression Gallery How To Create Outlook Appointments from a LightSwitch Application Beth Massi has a new Lightswitch post up... her previous was email from Lightswitch... this is Outlook appointments... pretty darn cool. Quick run through of the WP7 Developer Tools January 2011 Michael Crump has a really good Quick look at the new WP7 Dev Tools that were released last week posted on his blog Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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• #altnetseattle &ndash; REST Services

  - by GeekAgilistMercenary

  Below are the notes I made in the REST Architecture Session I helped kick off with Andrew. RSS, ATOM, and such needed for better discovery.  i.e. there still is a need for some type of discovery. Difficult is modeling behaviors in a RESTful way.  ??  Invoking some type of state against an object.  For instance in the case of a POST vs. a GET.  The GET is easy, comes back as is, but what about a POST, which often changes some state or something. Challenge is doing multiple workflows with stateful workflows.  How does batch work.  Maybe model the batch as a resource. Frameworks aren’t particularly part of REST, REST is REST.  But point argued that REST is modeled, or part of modeling a state machine of some sort… ? Nothing is 100% reliable w/ REST – comparisons drawn with TCP/IP.  Sufficient probability is made however for the communications, but the idea of a possible failure has to be built into the usage model of REST. Ruby on Rails / RESTfully, and others used.  What were their issues, what do they do.  ATOM feeds, object serialized, using LINQ to XML w/ this.  No state machine libraries. Idempotent areas around REST and single change POST changes are inherent in the architecture. REST – one of the constrained languages is for the interaction w/ the system.  Limiting what can be done on the resources.  - disagreement, there is no agreed upon REST verbs. Sam Ruby – RESTful services.  Expanded the verbs within REST/HTTP pushes you off the web.  Of the existing verbs POST leaves the most up for debate. Robert Reem used Factory to deal with the POST to handle the new state.  The POST identifying what it just did by the return. Different states are put into POST, so that new prospective verbs, without creating verbs for REST/HTTP can be used to advantage without breaking universal clients. Biggest issue with REST services is their lack of state, yet it is also one of their biggest strengths.  What happens is that the client takes up the often onerous task of handling all state, state machines, and other extraneous resource management.  All the GETs, POSTs, DELETEs, INSERTs get all pushed into abstraction.  My 2 cents is that this in a way ends up pushing a huge proprietary burden onto the REST services often removing the point of REST to be simple and to the point. WADL does provide discovery and some state control (sort of?) Statement made, "WADL" isn't needed.  The JSON, XML, or other client side returned data handles this. I then applied the law of 2 feet rule for myself and headed to finish up these notes, post to the Wiki, and figure out what I was going to do next.  For the original Wiki entry check it out here. I will be adding more to this post with a subsequent post.  Please do feel free to post your thoughts and ideas about this, as I am sure everyone in the session will have more for elaboration.

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• Dissing Architects, or "What's wrong with the coffee?"

  - by Bob Rhubart

  In my conversations with people in architect roles, tales of animosity, disrespect, and outright hostility aren't uncommon. And it's clear that in more than a few organizations architects regularly face a tough uphill climb. For architects with the requisite combination of technical, organizational, and people skills, that rough treatment is grossly undeserved. But tales of unqualified people in positions up and down the IT food chain are also easy to come by. So what's the other side of the architect story? Are some architects tarnishing the role and making life miserable for their more qualified colleagues? The various quotes included below were culled from a variety of sources. The criticism is harsh, and the people behind these quotes clearly have issues with architects. Still, whether based on mere opinion or actual experience, the comments shed some light on behaviors that should raise red flags for anyone pursuing a career as an architect. If you're an architect, and you've ever noticed that your coffee tastes like window cleaner, or your car is repeatedly keyed, or no one ever holds the elevator for you, maybe you need to do a little soul searching... Those Who Can, Code; Those Who Can't, Architect | Joe Winchester [May 18, 2007] "At the moment there seems to be an extremely unhealthy obsession in software with the concept of architecture. A colleague of mine, a recent graduate, told me he wished to become a software architect. He was drawn to the glamour of being able to come up with grandiose ideas - sweeping generalized designs, creating presentations to audiences of acronym addicts, writing esoteric academic papers, speaking at conferences attended by headless engineers on company expense accounts hungrily seeking out this year's grail, and creating e-mails with huge cc lists from people whose signature footer is more interesting than the content. I tried to re-orient him into actually doing some coding, to join a team that has a good product and keen users both of whom are pushing requirements forward, to no avail. Somehow the lure of being an architecture astronaut was too strong and I lost him to the dark side." Don't Let Architecture Astronauts Scare You | Joel Spolsky [April 21, 2001] "It's very hard to get them to write code or design programs, because they won't stop thinking about Architecture. They're astronauts because they are above the oxygen level, I don't know how they're breathing. They tend to work for really big companies that can afford to have lots of unproductive people with really advanced degrees that don't contribute to the bottom line. Remember that the architecture people are solving problems that they think they can solve, not problems which are useful to solve." Non Coding Architects Suck | Richard Henderson [May 24, 2010] "If a guy with a badge saying 'system architect' looks blank on low-level issues then he is not an architect, he is a business-analyst who went on a course. He will probably wax lyrical on all things high-level and 'important.' He will produce lovely object hierarchies without a clue to implementation. He will have a moustache and play golf." Architects Play Golf | Sunir Shah [August 15, 2012] "Often arrogant architects are difficult to get a hold of during the implementation phase because they no longer feel the need to stick around. Especially around midnight when most of the poor sob [sic] developers are still banging away. After all, they've already solved the problem--the rest is just an implementation exercise." Engineer vs Architect(Part of a discussion on the IT Architect Network Group on LinkedIn) "[An] architect spends his time producing white papers full of acronyms he does not understand but that impress his boss [while the] engineer keeps his head down and does the actual job." Architects Don't Code | [Author Unknown] "Faulty belief: System Architects don't need to code anymore. They know what they are talking about by virtue of the fact that they are System Architects."

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• Windows Azure Recipe: Social Web / Big Media

  - by Clint Edmonson

  With the rise of social media there’s been an explosion of special interest media web sites on the web. From athletics to board games to funny animal behaviors, you can bet there’s a group of people somewhere on the web talking about it. Social media sites allow us to interact, share experiences, and bond with like minded enthusiasts around the globe. And through the power of software, we can follow trends in these unique domains in real time. Drivers Reach Scalability Media hosting Global distribution Solution Here’s a sketch of how a social media application might be built out on Windows Azure: Ingredients Traffic Manager (optional) – can be used to provide hosting and load balancing across different instances and/or data centers. Perfect if the solution needs to be delivered to different cultures or regions around the world. Access Control – this service is essential to managing user identity. It’s backed by a full blown implementation of Active Directory and allows the definition and management of users, groups, and roles. A pre-built ASP.NET membership provider is included in the training kit to leverage this capability but it’s also flexible enough to be combined with external Identity providers including Windows LiveID, Google, Yahoo!, and Facebook. The provider model has extensibility points to hook into other identity providers as well. Web Role – hosts the core of the web application and presents a central social hub users. Database – used to store core operational, functional, and workflow data for the solution’s web services. Caching (optional) – as a web site traffic grows caching can be leveraged to keep frequently used read-only, user specific, and application resource data in a high-speed distributed in-memory for faster response times and ultimately higher scalability without spinning up more web and worker roles. It includes a token based security model that works alongside the Access Control service. Tables (optional) – for semi-structured data streams that don’t need relational integrity such as conversations, comments, or activity streams, tables provide a faster and more flexible way to store this kind of historical data. Blobs (optional) – users may be creating or uploading large volumes of heterogeneous data such as documents or rich media. Blob storage provides a scalable, resilient way to store terabytes of user data. The storage facilities can also integrate with the Access Control service to ensure users’ data is delivered securely. Content Delivery Network (CDN) (optional) – for sites that service users around the globe, the CDN is an extension to blob storage that, when enabled, will automatically cache frequently accessed blobs and static site content at edge data centers around the world. The data can be delivered statically or streamed in the case of rich media content. Training These links point to online Windows Azure training labs and resources where you can learn more about the individual ingredients described above. (Note: The entire Windows Azure Training Kit can also be downloaded for offline use.) Windows Azure (16 labs) Windows Azure is an internet-scale cloud computing and services platform hosted in Microsoft data centers, which provides an operating system and a set of developer services which can be used individually or together. It gives developers the choice to build web applications; applications running on connected devices, PCs, or servers; or hybrid solutions offering the best of both worlds. New or enhanced applications can be built using existing skills with the Visual Studio development environment and the .NET Framework. With its standards-based and interoperable approach, the services platform supports multiple internet protocols, including HTTP, REST, SOAP, and plain XML SQL Azure (7 labs) Microsoft SQL Azure delivers on the Microsoft Data Platform vision of extending the SQL Server capabilities to the cloud as web-based services, enabling you to store structured, semi-structured, and unstructured data. Windows Azure Services (9 labs) As applications collaborate across organizational boundaries, ensuring secure transactions across disparate security domains is crucial but difficult to implement. Windows Azure Services provides hosted authentication and access control using powerful, secure, standards-based infrastructure. See my Windows Azure Resource Guide for more guidance on how to get started, including links web portals, training kits, samples, and blogs related to Windows Azure.

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• Default Parameters vs Method Overloading

  - by João Angelo

  With default parameters introduced in C# 4.0 one might be tempted to abandon the old approach of providing method overloads to simulate default parameters. However, you must take in consideration that both techniques are not interchangeable since they show different behaviors in certain scenarios. For me the most relevant difference is that default parameters are a compile time feature while method overloading is a runtime feature. To illustrate these concepts let’s take a look at a complete, although a bit long, example. What you need to retain from the example is that static method Foo uses method overloading while static method Bar uses C# 4.0 default parameters. static void CreateCallerAssembly(string name) { // Caller class - Invokes Example.Foo() and Example.Bar() string callerCode = String.Concat( "using System;", "public class Caller", "{", " public void Print()", " {", " Console.WriteLine(Example.Foo());", " Console.WriteLine(Example.Bar());", " }", "}"); var parameters = new CompilerParameters(new[] { "system.dll", "Common.dll" }, name); new CSharpCodeProvider().CompileAssemblyFromSource(parameters, callerCode); } static void Main() { // Example class - Foo uses overloading while Bar uses C# 4.0 default parameters string exampleCode = String.Concat( "using System;", "public class Example", "{{", " public static string Foo() {{ return Foo(\"{0}\"); }}", " public static string Foo(string key) {{ return \"FOO-\" + key; }}", " public static string Bar(string key = \"{0}\") {{ return \"BAR-\" + key; }}", "}}"); var compiler = new CSharpCodeProvider(); var parameters = new CompilerParameters(new[] { "system.dll" }, "Common.dll"); // Build Common.dll with default value of "V1" compiler.CompileAssemblyFromSource(parameters, String.Format(exampleCode, "V1")); // Caller1 built against Common.dll that uses a default of "V1" CreateCallerAssembly("Caller1.dll"); // Rebuild Common.dll with default value of "V2" compiler.CompileAssemblyFromSource(parameters, String.Format(exampleCode, "V2")); // Caller2 built against Common.dll that uses a default of "V2" CreateCallerAssembly("Caller2.dll"); dynamic caller1 = Assembly.LoadFrom("Caller1.dll").CreateInstance("Caller"); dynamic caller2 = Assembly.LoadFrom("Caller2.dll").CreateInstance("Caller"); Console.WriteLine("Caller1.dll:"); caller1.Print(); Console.WriteLine("Caller2.dll:"); caller2.Print(); } And if you run this code you will get the following output: // Caller1.dll: // FOO-V2 // BAR-V1 // Caller2.dll: // FOO-V2 // BAR-V2 You see that even though Caller1.dll runs against the current Common.dll assembly where method Bar defines a default value of “V2″ the output show us the default value defined at the time Caller1.dll compiled against the first version of Common.dll. This happens because the compiler will copy the current default value to each method call, much in the same way a constant value (const keyword) is copied to a calling assembly and changes to it’s value will only be reflected if you rebuild the calling assembly again. The use of default parameters is also discouraged by Microsoft in public API’s as stated in (CA1026: Default parameters should not be used) code analysis rule.

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• Critical Threads Optimization

  - by Rafael Vanoni

  Background One of the more common issues we've been seeing in the field is the growing difficulty in optimizing performance of multi-threaded applications. A good portion of this difficulty is due to the increasing complexity of modern processors that present various degrees of sharing relationships between hardware components. Take any current CMT processor and you'll find any number of CPUs sharing execution pipelines, floating point units, caches, etc. Consequently, applying the traditional recipe of one software thread for each CPU will have varying degrees of success, according to the layout of the underlying hardware. On top of this increasing complexity we've also seen processors with features that aim at dynamically resourcing software threads according to their utilization. Intel's Turbo Boost allows processors to increase their operating frequency if there is enough thermal headroom available and the processor isn't fully utilized. More recently, the SPARC T4 processor introduced dynamic threading, allowing each core to dynamically allocate more resources to its active CPUs. Both cases are in essence recognizing that current processors will be running a wide mix of workloads, some will be designed for throughput, others for low latency. The hardware is providing mechanisms to dynamically resource threads according to their runtime behavior. We're very aware of these challenges in Solaris, and have been working to provide the best out of box performance while providing mechanisms to further optimize applications when necessary. The Critical Threads Optimzation was introduced in Solaris 10 8/11 and Solaris 11 as one such mechanism that allows customers to both address issues caused by contention over shared hardware resources and explicitly take advantage of features such as T4's dynamic threading. What it is The basic idea is to allow performance critical threads to execute with more exclusive access to hardware resources. For example, when deploying an application that implements a producer/consumer model, it'll likely be advantageous to give the producer more exclusive access to the hardware instead of having it competing for resources with all the consumers. In the case of a T4 based system, we may want to have a producer running by itself on a single core and create one consumer for each of the remaining CPUs. With the Critical Threads Optimization we're extending the semantics of scheduling priorities (which thread should run first) to include priority over shared resources (which thread should have more "space"). Now the scheduler will not only run higher priority threads first: it will also provide them with more exclusive access to hardware resources if they are available. How does it work ? Using the previous example in Solaris 11, all you'd have to do would be to place the producer in the Fixed Priority (FX) scheduling class at priority 60, or in the Real Time (RT) class at any priority and Solaris will try to give it more "hardware space". On both Solaris 10 8/11 and Solaris 11 this can be achieved through the existing priocntl(1,2) and priocntlset(2) interfaces. If your application already assigns these priorities to performance critical threads, there's no additional step you need to take. One important aspect of this optimization is that it requires some level of idleness in the system, either as a result of sizing the application before hand or through periods of transient idleness during runtime. If the system is fully committed, the scheduler will put all the available CPUs to work.Best practices If you're an application developer, we encourage you to look into assigning the right priorities for the different threads in your application. Solaris provides different scheduling classes (Time Share, Interactive, Fair Share, Fixed Priority and Real Time) that offer different policies and behaviors. It is not always simple to figure out which set of threads are critical to the performance of a workload, and it may not always be feasible to take advantage of this optimization, but we believe that this can be correctly (and safely) done during development. Overall, the out of box performance in Solaris should meet your workload's requirements. If you are looking into that extra bit of performance, then the Critical Threads Optimization may be what you're looking for.

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• A more elegant way of embedding a SOAP security header in Silverlight 4

  - by Your DisplayName here!

  The current situation with Silverlight is, that there is no support for the WCF federation binding. This means that all security token related interactions have to be done manually. Requesting the token from an STS is not really the bad part, sending it along with outgoing SOAP messages is what’s a little annoying. So far you had to wrap all calls on the channel in an OperationContextScope wrapping an IContextChannel. This “programming model” was a little disruptive (in addition to all the async stuff that you are forced to do). It seems that starting with SL4 there is more support for traditional WCF extensibility points – especially IEndpointBehavior, IClientMessageInspector. I never read somewhere that these are new features in SL4 – but I am pretty sure they did not exist in SL3. With the above mentioned interfaces at my disposal, I thought I have another go at embedding a security header – and yeah – I managed to make the code much prettier (and much less bizarre). Here’s the code for the behavior/inspector: public class IssuedTokenHeaderInspector : IClientMessageInspector {     RequestSecurityTokenResponse _rstr;       public IssuedTokenHeaderInspector(RequestSecurityTokenResponse rstr)     {         _rstr = rstr;     }       public void AfterReceiveReply(ref Message reply, object correlationState)     { }       public object BeforeSendRequest(ref Message request, IClientChannel channel)     {         request.Headers.Add(new IssuedTokenHeader(_rstr));                  return null;     } }   public class IssuedTokenHeaderBehavior : IEndpointBehavior {     RequestSecurityTokenResponse _rstr;       public IssuedTokenHeaderBehavior(RequestSecurityTokenResponse rstr)     {         if (rstr == null)         {             throw new ArgumentNullException();         }           _rstr = rstr;     }       public void ApplyClientBehavior(       ServiceEndpoint endpoint, ClientRuntime clientRuntime)     {         clientRuntime.MessageInspectors.Add(new IssuedTokenHeaderInspector(_rstr));     }       // rest omitted } This allows to set up a proxy with an issued token header and you don’t have to worry anymore with embedding the header manually with every call: var client = GetWSTrustClient();   var rst = new RequestSecurityToken(WSTrust13Constants.KeyTypes.Symmetric) {     AppliesTo = new EndpointAddress("https://rp/") };   client.IssueCompleted += (s, args) => {     _proxy = new StarterServiceContractClient();     _proxy.Endpoint.Behaviors.Add(new IssuedTokenHeaderBehavior(args.Result));   };   client.IssueAsync(rst); Since SL4 also support the IExtension<T> interface, you can also combine this with Nicholas Allen’s AutoHeaderExtension.

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• Use a custom value object or a Guid as an entity identifier in a distributed system?

  - by Kazark

  tl;dr I've been told that in domain-driven design, an identifier for an entity could be a custom value object, i.e. something other than Guid, string, int, etc. Can this really be advisable in a distributed system? Long version I will invent an situation analogous to the one I am currently facing. Say I have a distributed system in which a central concept is an egg. The system allows you to order eggs and see spending reports and inventory-centric data such as quantity on hand, usage, valuation and what have you. There area variety of services backing these behaviors. And say there is also another app which allows you to compose recipes that link to a particular egg type. Now egg type is broken down by the species—ostrich, goose, duck, chicken, quail. This is fine and dandy because it means that users don't end up with ostrich eggs when they wanted quail eggs and whatnot. However, we've been getting complaints because jumbo chicken eggs are not even close to equivalent to small ones. The price is different, and they really aren't substitutable in recipes. And here we thought we were doing users a favor by not overwhelming them with too many options. Currently each of the services (say, OrderSubmitter, EggTypeDefiner, SpendingReportsGenerator, InventoryTracker, RecipeCreator, RecipeTracker, or whatever) are identifying egg types with an industry-standard integer representation the species (let's call it speciesCode). We realize we've goofed up because this change could effect every service. There are two basic proposed solutions: Use a predefined identifier type like Guid as the eggTypeID throughout all the services, but make EggTypeDefiner the only service that knows that this maps to a speciesCode and eggSizeCode (and potentially to an isOrganic flag in the future, or whatever). Use an EggTypeID value object which is a combination of speciesCode and eggSizeCode in every service. I've proposed the first solution because I'm hoping it better encapsulates the definition of what an egg type is in the EggTypeDefiner and will be more resilient to changes, say if some people now want to differentiate eggs by whether or not they are "organic". The second solution is being suggested by some people who understand DDD better than I do in the hopes that less enrichment and lookup will be necessary that way, with the justification that in DDD using a value object as an ID is fine. Also, they are saying that EggTypeDefiner is not a domain and EggType is not an entity and as such should not have a Guid for an ID. However, I'm not sure the second solution is viable. This "value object" is going to have to be serialized into JSON and URLs for GET requests and used with a variety of technologies (C#, JavaScript...) which breaks encapsulation and thus removes any behavior of the identifier value object (is either of the fields optional? etc.) Is this a case where we want to avoid something that would normally be fine in DDD because we are trying to do DDD in a distributed fashion? Summary Can it be a good idea to use a custom value object as an identifier in a distributed system (solution #2)?

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• Bladecenter-E Power Module fault

  - by Lihnjo

  We have problem on IBM Bladecenter-E Critical Events Power module 2 is off. DC fault. Power module 4 is off. DC fault. Warnings and System Events Insufficient chassis power to support redundancy What is the best solution for this problem? Thanks AMM Service Data Help SPAPP Capture Available 10/13/2010 17:03:47 1090347 bytes Time: 11/19/2012 11:02:31 UUID: 42E1 5D2F D7BF 41A6 A4A2 48D1 3FB7 0540 MAC Address xx:xx:xx:xx:xx:xx MM Information Name: nnnnn Contact: aaa, bbb, ccc, England Location: [email protected] IP address: 111.222.333.444 Date Time Information GMT offset: +1:00 - Central Europe Time (Western Europe, Algeria, Nigeria, Angola) Adjust for DST: Yes NTP: Enabled NTP Hostname/IP: 111.222.333.444 System Health: Critical System Status Summary One or more monitored parameters are abnormal. Critical Events Power module 2 is off. DC fault. Power module 4 is off. DC fault. Warnings and System Events Insufficient chassis power to support redundancy CHASSIS (BladeCenter-E) in CHASSIS slot: 01 TopoPath is "CHASSIS[1]". Description : BladeCenter-E Width : 1 Sub Type : BladeCenter (BC) Power Mode : 220 v KVM Owner : CHASSIS[1]/BLADE[9] MT Owner : CHASSIS[1]/MGMT_MOD[1] Component Type : CHASSIS Inventory: VPD ID: 336 (decimal) POS ID EXT: 0 (decimal) POS ID: 8 (decimal) Machine Type/Model: 86773RG Machine Serial Number: 99ZL816 Part Number: 39R8561 FRU Number: 39R8563 FRU Serial Number: YK109174W1HV Manufacturer ID: IBM Hardware Revision: 3 (decimal) Manufacture Date: 18 (wk), 07 (yr) UUID: 42E1 5D2F D7BF 41A6 A4A2 48D1 3FB7 0540 (hex) Type Code: 97 (decimal) Sub-type Code: 0 (decimal) IANA Num: 336 (decimal) Product ID: 8 (decimal) Manufacturer Sub ID: FOXC Enviroment data: -------------- Type: : POWER_USAGE Unit: : WATTS Reading: : 0xa Sensor Label: : Midplane Sensor ID: : 0x0 MGMT MOD (Advanced Management Module) in MGMT_MOD slot: 01 TopoPath is "CHASSIS[1]/MGMT_MOD[1]". Description : Advanced Management Module Name : kant Width : 1 Component Role : Primary Component Type : MGMT MOD Insert Time : 28050132 Inventory: VPD ID: 288 (decimal) POS ID EXT: 0 (decimal) POS ID: 4 (decimal) Part Number: 39Y9659 FRU Number: 39Y9661 FRU Serial Number: YK11836CE2RC Manufacturer ID: IBM Hardware Revision: 4 (decimal) Manufacture Date: 50 (wk), 06 (yr) UUID: 1D95 9937 8CA5 11DB 9499 0014 5EDF 1C98 (hex) Type Code: 81 (decimal) Sub-type Code: 1 (decimal) IANA Num: 20301 (decimal) Product ID: 65 (decimal) Manufacturer Sub ID: ASUS Firmware data: Type : AMM firmware Build ID : BPET50P File Name : CNETCMUS.PKT Release Date : 03/26/2010 Release Level : 50 Revision - Major: 80 Port info: ======================================================== Topology Path ID : 1 Label : External Phy Orientation : EXTERNAL Port Number : 1 Type : MGT Physical Meidum : Copper Number of Link Intferfaces : 1 ------------------------------------ Link Ifc ID Number : 1 Link Ifc Transport Protocol : ENET Link Ifc Addr Type : MAC Link Ifc Burned-in Addr : xx:xx:xx:xx:xx:xx Link Ifc Admin Addr : 00:00:00:00:00:00 Link Ifc Addr in use : xx:xx:xx:xx:xx:xx ---------------------------------------------------------- Configuration behaviors: Save Only Enviroment data: -------------- Type: : TEMPERATURE Unit: : DEGREES_C Reading: : 38.00 Sensor Label: : MM Ambient Sensor ID: : 0x0 -------------- Type: : VOLTAGE Unit: : VOLTS Reading: : +4.81 Sensor Label: : +5V Sensor ID: : 0x1b -------------- Type: : VOLTAGE Unit: : VOLTS Reading: : +3.26 Sensor Label: : +3.3V Sensor ID: : 0x19 -------------- Type: : VOLTAGE Unit: : VOLTS Reading: : +11.97 Sensor Label: : +12V Sensor ID: : 0x16 -------------- Type: : VOLTAGE Unit: : VOLTS Reading: : -4.88 Sensor Label: : -5V Sensor ID: : 0x1e -------------- Type: : VOLTAGE Unit: : VOLTS Reading: : +2.47 Sensor Label: : +2.5V Sensor ID: : 0x18 -------------- Type: : VOLTAGE Unit: : VOLTS Reading: : +1.76 Sensor Label: : +1.8V Sensor ID: : 0x15 -------------- Type: : POWER_USAGE Unit: : WATTS Reading: : 0x19 Sensor Label: : kant Sensor ID: : 0x0

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• Abnormal hangs and restarts Ubuntu 8.04

  - by jai-ho

  Hi, I am using Ubuntu 8.04 LTS and seeing the following behaviors: The system hangs after a while and becomes completely unresponsive. The system sometimes restarts itself ! Can you please help me identify what is the problem? Also please mention where should I look for the possible cause of this error. Thanks. EDIT: Got the following from the dmesg output (the system got hung and had to restart) [ 15.452015] Driver 'sr' needs updating - please use bus_type methods [ 15.456882] Driver 'sd' needs updating - please use bus_type methods [ 15.457987] sr0: scsi3-mmc drive: 52x/52x writer cd/rw xa/form2 cdda tray [ 15.457993] Uniform CD-ROM driver Revision: 3.20 [ 15.458058] sr 0:0:1:0: Attached scsi CD-ROM sr0 [ 15.463028] sd 1:0:0:0: [sda] 156301488 512-byte hardware sectors (80026 MB) [ 15.463051] sd 1:0:0:0: [sda] Write Protect is off [ 15.463055] sd 1:0:0:0: [sda] Mode Sense: 00 3a 00 00 [ 15.463083] sd 1:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 15.463151] sd 1:0:0:0: [sda] 156301488 512-byte hardware sectors (80026 MB) [ 15.463167] sd 1:0:0:0: [sda] Write Protect is off [ 15.463171] sd 1:0:0:0: [sda] Mode Sense: 00 3a 00 00 [ 15.463197] sd 1:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 15.463202] sda:<5sr 0:0:1:0: Attached scsi generic sg0 type 5 [ 15.464634] sd 1:0:0:0: Attached scsi generic sg1 type 0 [ 15.470120] sda1 sda2 < sda5 [ 15.495536] sd 1:0:0:0: [sda] Attached SCSI disk [ 15.759549] Attempting manual resume [ 15.759554] swsusp: Resume From Partition 8:5 [ 15.759556] PM: Checking swsusp image. [ 15.759742] PM: Resume from disk failed. [ 15.779964] EXT3-fs: INFO: recovery required on readonly filesystem. [ 15.779970] EXT3-fs: write access will be enabled during recovery. [ 19.904204] kjournald starting. Commit interval 5 seconds [ 19.904235] EXT3-fs: sda1: orphan cleanup on readonly fs [ 19.904245] ext3_orphan_cleanup: deleting unreferenced inode 303260 [ 19.904304] ext3_orphan_cleanup: deleting unreferenced inode 303329 [ 19.932763] ext3_orphan_cleanup: deleting unreferenced inode 3801871 [ 19.932785] ext3_orphan_cleanup: deleting unreferenced inode 3801874 [ 19.932798] ext3_orphan_cleanup: deleting unreferenced inode 3801910 [ 19.951253] ext3_orphan_cleanup: deleting unreferenced inode 3801912 [ 19.951266] ext3_orphan_cleanup: deleting unreferenced inode 3801914 [ 19.951278] ext3_orphan_cleanup: deleting unreferenced inode 3959212 [ 19.951299] ext3_orphan_cleanup: deleting unreferenced inode 3959213 [ 19.960335] ext3_orphan_cleanup: deleting unreferenced inode 3959215 [ 19.963531] ext3_orphan_cleanup: deleting unreferenced inode 3801875 [ 19.963545] ext3_orphan_cleanup: deleting unreferenced inode 3663727 [ 19.963565] ext3_orphan_cleanup: deleting unreferenced inode 3663708 [ 19.963577] ext3_orphan_cleanup: deleting unreferenced inode 4072122 [ 19.963597] ext3_orphan_cleanup: deleting unreferenced inode 4072157 [ 19.968616] ext3_orphan_cleanup: deleting unreferenced inode 4072159 [ 19.970252] ext3_orphan_cleanup: deleting unreferenced inode 4072160 [ 19.970264] ext3_orphan_cleanup: deleting unreferenced inode 4072161 [ 19.992889] ext3_orphan_cleanup: deleting unreferenced inode 4072264 [ 19.992903] ext3_orphan_cleanup: deleting unreferenced inode 4072267 [ 19.999585] ext3_orphan_cleanup: deleting unreferenced inode 4072268 [ 20.008329] ext3_orphan_cleanup: deleting unreferenced inode 4072270 [ 20.008343] ext3_orphan_cleanup: deleting unreferenced inode 4072123 [ 20.008360] ext3_orphan_cleanup: deleting unreferenced inode 4072452 [ 20.008374] ext3_orphan_cleanup: deleting unreferenced inode 4072453 [ 20.008385] ext3_orphan_cleanup: deleting unreferenced inode 4072124 [ 20.008398] ext3_orphan_cleanup: deleting unreferenced inode 311574 [ 20.008413] ext3_orphan_cleanup: deleting unreferenced inode 967890 [ 20.008420] EXT3-fs: sda1: 28 orphan inodes deleted [ 20.008423] EXT3-fs: recovery complete. [ 20.082622] EXT3-fs: mounted filesystem with ordered data mode. [ 29.025379] input: PC Speaker as /devices/platform/pcspkr/input/input2 [ 29.187133] Linux agpgart interface v0.102 [ 29.225338] iTCO_vendor_support: vendor-support=0 [ 29.259662] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.02 (26-Jul-2007)

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• WCF AuthenticationService in IIS7 Error

  - by germandb

  I have a WCF Server running on IIS 7 using default application pool, with SSL activate, the services is installed in a SBS Server 2008. I implement client application services with wcf and SQL 2005 for setting the access control in my application. The application run under windows vista and is make with WPF. In my developer machine the application and the WCF services run well, the IIS i'm use for the trials is the local IIS 7 and the database is the SQL Server 2005 database hosting in my server. I'm using Visual Studio Project Designer to enable and configure client application services. using https://localhost/WcfServidorFundacion. When i'm change the authentication services location to https://WcfServices:5659/WcfServidorFundacion and recompile the application, the following error show up. Message: The web service returned the error status code: InternalServerError. Details of service failure: {"Message":" Error while processing your request ","StackTrace":"","ExceptionType":""} Stack Trace: en System.Net.HttpWebRequest.GetResponse() en System.Web.ClientServices.Providers.ProxyHelper.CreateWebRequestAndGetResponse(String serverUri, CookieContainer& cookies, String username, String connectionString, String connectionStringProvider, String[] paramNames, Object[] paramValues, Type returnType) InnerException: System.Net.WebException Message="Remote Server Error: (500) Interal Server Error." I can access the WCF service from the navigator using the url mentioned above and even make a webReference in my project. I make a capture of the response but I'cant post it because i don't have 10 reputation points I activate the error log in the IIS 7 server, and the result is a Warning in the ManagedPipilineHandler. I appreciate if any one can help me Errors & Warnings No.? Severity Event Module Name 132. view trace Warning -MODULE_SET_RESPONSE_ERROR_STATUS ModuleName ManagedPipelineHandler Notification 128 HttpStatus 500 HttpReason Internal Server Error HttpSubStatus 0 ErrorCode 0 ConfigExceptionInfo Notification EXECUTE_REQUEST_HANDLER ErrorCode La operación se ha completado correctamente. (0x0) Maybe this can help, is the web.config of my service <?xml version="1.0" encoding="utf-8"?> <!-- Nota: como alternativa para editar manualmente este archivo, puede utilizar la herramienta Administración de sitios web para configurar los valores de la aplicación. Utilice la opción Sitio Web->Configuración de Asp.Net en Visual Studio. Encontrará una lista completa de valores de configuración y comentarios en machine.config.comments, que se encuentra generalmente en \Windows\Microsoft.Net\Framework\v2.x\Config --> <configuration> <configSections> <sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"> <sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"> <section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication" /> <sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"> <section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="Everywhere" /> <section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication" /> <section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication" /> <section name="roleService" type="System.Web.Configuration.ScriptingRoleServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication" /> </sectionGroup> </sectionGroup> </sectionGroup> </configSections> <appSettings /> <connectionStrings> <remove name="LocalMySqlServer" /> <remove name="LocalSqlServer" /> <add name="fundacionSelfAut" connectionString="Data Source=FUNDACIONSERVER/PRUEBAS;Initial Catalog=fundacion;User ID=wcfBaseDatos;Password=qwerty_2009;" providerName="System.Data.SqlClient" /> </connectionStrings> <system.web> <profile enabled="true" defaultProvider="SqlProfileProvider"> <providers> <clear /> <add name="SqlProfileProvider" type="System.Web.Profile.SqlProfileProvider" connectionStringName="fundacionSelfAut" applicationName="fundafe" /> </providers> <properties> <add name="FirstName" type="String" /> <add name="LastName" type="String" /> <add name="PhoneNumber" type="String" /> </properties> </profile> <roleManager enabled="true" defaultProvider="SqlRoleProvider"> <providers> <clear /> <add name="SqlRoleProvider" type="System.Web.Security.SqlRoleProvider" connectionStringName="fundacionSelfAut" applicationName="fundafe" /> </providers> </roleManager> <membership defaultProvider="SqlMembershipProvider"> <providers> <clear /> <add name="SqlMembershipProvider" type="System.Web.Security.SqlMembershipProvider" connectionStringName="fundacionSelfAut" applicationName="fundafe" enablePasswordRetrieval="false" enablePasswordReset="false" requiresQuestionAndAnswer="true" requiresUniqueEmail="true" passwordFormat="Hashed" /> </providers> </membership> <authentication mode="Forms" /> <compilation debug="true" strict="false" explicit="true"> <assemblies> <add assembly="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" /> <add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> </assemblies> </compilation> <!-- La sección <authentication> permite la configuración del modo de autenticación de seguridad utilizado por ASP.NET para identificar a un usuario entrante. --> <!-- La sección <customErrors> permite configurar las acciones que se deben llevar a cabo/cuando un error no controlado tiene lugar durante la ejecución de una solicitud. Específicamente, permite a los desarrolladores configurar páginas de error html que se mostrarán en lugar de un seguimiento de pila de errores. <customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm"> <error statusCode="403" redirect="NoAccess.htm" /> <error statusCode="404" redirect="FileNotFound.htm" /> </customErrors> --> <pages> <controls> <add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> </controls> </pages> <httpHandlers> <remove verb="*" path="*.asmx" /> <add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> <add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> <add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false" /> </httpHandlers> <httpModules> <add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> </httpModules> <sessionState timeout="40" /> </system.web> <system.codedom> <compilers> <compiler language="c#;cs;csharp" extension=".cs" warningLevel="4" type="Microsoft.CSharp.CSharpCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"> <providerOption name="CompilerVersion" value="v3.5" /> <providerOption name="WarnAsError" value="false" /> </compiler> </compilers> </system.codedom> <!-- La sección webServer del sistema es necesaria para ejecutar ASP.NET AJAX en Internet Information Services 7.0. Sin embargo, no es necesaria para la versión anterior de IIS. --> <system.webServer> <validation validateIntegratedModeConfiguration="false" /> <modules> <add name="ScriptModule" preCondition="integratedMode" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> </modules> <handlers> <remove name="WebServiceHandlerFactory-Integrated" /> <add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> <add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> <add name="ScriptResource" preCondition="integratedMode" verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> </handlers> <tracing> <traceFailedRequests> <add path="*"> <traceAreas> <add provider="ASP" verbosity="Verbose" /> <add provider="ASPNET" areas="Infrastructure,Module,Page,AppServices" verbosity="Verbose" /> <add provider="ISAPI Extension" verbosity="Verbose" /> <add provider="WWW Server" areas="Authentication,Security,Filter,StaticFile,CGI,Compression,Cache,RequestNotifications,Module" verbosity="Verbose" /> </traceAreas> <failureDefinitions statusCodes="401.3,500,403,404,405" /> </add> </traceFailedRequests> </tracing> <security> <authorization> <add accessType="Allow" users="germanbarbosa,informatica" /> </authorization> <authentication> <windowsAuthentication enabled="false" /> </authentication> </security> </system.webServer> <system.web.extensions> <scripting> <webServices> <authenticationService enabled="true" requireSSL="true" /> <profileService enabled="true" readAccessProperties="FirstName,LastName,PhoneNumber" /> <roleService enabled="true" /> </webServices> </scripting> </system.web.extensions> <system.serviceModel> <services> <!-- this enables the WCF AuthenticationService endpoint --> <service behaviorConfiguration="AppServiceBehaviors" name="System.Web.ApplicationServices.AuthenticationService"> <endpoint address="" binding="basicHttpBinding" bindingConfiguration="userHttps" bindingNamespace="http://asp.net/ApplicationServices/v200" contract="System.Web.ApplicationServices.AuthenticationService" /> </service> <!-- this enables the WCF RoleService endpoint --> <service behaviorConfiguration="AppServiceBehaviors" name="System.Web.ApplicationServices.RoleService"> <endpoint binding="basicHttpBinding" bindingConfiguration="userHttps" bindingNamespace="http://asp.net/ApplicationServices/v200" contract="System.Web.ApplicationServices.RoleService" /> </service> <!-- this enables the WCF ProfileService endpoint --> <service behaviorConfiguration="AppServiceBehaviors" name="System.Web.ApplicationServices.ProfileService"> <endpoint binding="basicHttpBinding" bindingNamespace="http://asp.net/ApplicationServices/v200" bindingConfiguration="userHttps" contract="System.Web.ApplicationServices.ProfileService" /> </service> </services> <bindings> <basicHttpBinding> <!-- Set up a binding that uses Username as the client credential type --> <binding name="userHttps"> <security mode="Transport"> </security> </binding> </basicHttpBinding> </bindings> <behaviors> <serviceBehaviors> <behavior name="AppServiceBehaviors"> <serviceMetadata httpGetEnabled="false" httpsGetEnabled="true" /> <serviceDebug includeExceptionDetailInFaults="true" /> <serviceAuthorization principalPermissionMode="UseAspNetRoles" roleProviderName="SqlRoleProvider" /> <serviceCredentials> <userNameAuthentication userNamePasswordValidationMode="MembershipProvider" membershipProviderName="SqlMembershipProvider" /> </serviceCredentials> </behavior> </serviceBehaviors> </behaviors> <serviceHostingEnvironment aspNetCompatibilityEnabled="true" /> </system.serviceModel> </configuration>

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• WCF Bidirectional serialization fails

  - by Gena Verdel

  I'm trying to take advantage of Bidirectional serialization of some relational Linq-2-Sql generated entity classes. When using Unidirectional option everything works just fine, bu the moment I add IsReferenceType=true, objects fail to get transported over the tcp binding. Sample code: Entity class: [Table(Name="dbo.Blocks")] [DataContract()] public partial class Block : INotifyPropertyChanging, INotifyPropertyChanged { private static PropertyChangingEventArgs emptyChangingEventArgs = new PropertyChangingEventArgs(String.Empty); private long _ID; private int _StatusID; private string _Name; private bool _IsWithControlPoints; private long _DivisionID; private string _SHAPE; private EntitySet<BlockByWorkstation> _BlockByWorkstations; private EntitySet<PlanningPointAppropriation> _PlanningPointAppropriations; private EntitySet<Neighbor> _Neighbors; private EntitySet<Neighbor> _Neighbors1; private EntitySet<Task> _Tasks; private EntitySet<PlanningPointByBlock> _PlanningPointByBlocks; private EntitySet<ControlPointByBlock> _ControlPointByBlocks; private EntityRef<Division> _Division; private bool serializing; #region Extensibility Method Definitions partial void OnLoaded(); partial void OnValidate(System.Data.Linq.ChangeAction action); partial void OnCreated(); partial void OnIDChanging(long value); partial void OnIDChanged(); partial void OnStatusIDChanging(int value); partial void OnStatusIDChanged(); partial void OnNameChanging(string value); partial void OnNameChanged(); partial void OnIsWithControlPointsChanging(bool value); partial void OnIsWithControlPointsChanged(); partial void OnDivisionIDChanging(long value); partial void OnDivisionIDChanged(); partial void OnSHAPEChanging(string value); partial void OnSHAPEChanged(); #endregion public Block() { this.Initialize(); } [Column(Storage="_ID", AutoSync=AutoSync.OnInsert, DbType="BigInt NOT NULL IDENTITY", IsPrimaryKey=true, IsDbGenerated=true)] [DataMember(Order=1)] public override long ID { get { return this._ID; } set { if ((this._ID != value)) { this.OnIDChanging(value); this.SendPropertyChanging(); this._ID = value; this.SendPropertyChanged("ID"); this.OnIDChanged(); } } } [Column(Storage="_StatusID", DbType="Int NOT NULL")] [DataMember(Order=2)] public int StatusID { get { return this._StatusID; } set { if ((this._StatusID != value)) { this.OnStatusIDChanging(value); this.SendPropertyChanging(); this._StatusID = value; this.SendPropertyChanged("StatusID"); this.OnStatusIDChanged(); } } } [Column(Storage="_Name", DbType="NVarChar(255)")] [DataMember(Order=3)] public string Name { get { return this._Name; } set { if ((this._Name != value)) { this.OnNameChanging(value); this.SendPropertyChanging(); this._Name = value; this.SendPropertyChanged("Name"); this.OnNameChanged(); } } } [Column(Storage="_IsWithControlPoints", DbType="Bit NOT NULL")] [DataMember(Order=4)] public bool IsWithControlPoints { get { return this._IsWithControlPoints; } set { if ((this._IsWithControlPoints != value)) { this.OnIsWithControlPointsChanging(value); this.SendPropertyChanging(); this._IsWithControlPoints = value; this.SendPropertyChanged("IsWithControlPoints"); this.OnIsWithControlPointsChanged(); } } } [Column(Storage="_DivisionID", DbType="BigInt NOT NULL")] [DataMember(Order=5)] public long DivisionID { get { return this._DivisionID; } set { if ((this._DivisionID != value)) { if (this._Division.HasLoadedOrAssignedValue) { throw new System.Data.Linq.ForeignKeyReferenceAlreadyHasValueException(); } this.OnDivisionIDChanging(value); this.SendPropertyChanging(); this._DivisionID = value; this.SendPropertyChanged("DivisionID"); this.OnDivisionIDChanged(); } } } [Column(Storage="_SHAPE", DbType="Text", UpdateCheck=UpdateCheck.Never)] [DataMember(Order=6)] public string SHAPE { get { return this._SHAPE; } set { if ((this._SHAPE != value)) { this.OnSHAPEChanging(value); this.SendPropertyChanging(); this._SHAPE = value; this.SendPropertyChanged("SHAPE"); this.OnSHAPEChanged(); } } } [Association(Name="Block_BlockByWorkstation", Storage="_BlockByWorkstations", ThisKey="ID", OtherKey="BlockID")] [DataMember(Order=7, EmitDefaultValue=false)] public EntitySet<BlockByWorkstation> BlockByWorkstations { get { if ((this.serializing && (this._BlockByWorkstations.HasLoadedOrAssignedValues == false))) { return null; } return this._BlockByWorkstations; } set { this._BlockByWorkstations.Assign(value); } } [Association(Name="Block_PlanningPointAppropriation", Storage="_PlanningPointAppropriations", ThisKey="ID", OtherKey="MasterBlockID")] [DataMember(Order=8, EmitDefaultValue=false)] public EntitySet<PlanningPointAppropriation> PlanningPointAppropriations { get { if ((this.serializing && (this._PlanningPointAppropriations.HasLoadedOrAssignedValues == false))) { return null; } return this._PlanningPointAppropriations; } set { this._PlanningPointAppropriations.Assign(value); } } [Association(Name="Block_Neighbor", Storage="_Neighbors", ThisKey="ID", OtherKey="FirstBlockID")] [DataMember(Order=9, EmitDefaultValue=false)] public EntitySet<Neighbor> Neighbors { get { if ((this.serializing && (this._Neighbors.HasLoadedOrAssignedValues == false))) { return null; } return this._Neighbors; } set { this._Neighbors.Assign(value); } } [Association(Name="Block_Neighbor1", Storage="_Neighbors1", ThisKey="ID", OtherKey="SecondBlockID")] [DataMember(Order=10, EmitDefaultValue=false)] public EntitySet<Neighbor> Neighbors1 { get { if ((this.serializing && (this._Neighbors1.HasLoadedOrAssignedValues == false))) { return null; } return this._Neighbors1; } set { this._Neighbors1.Assign(value); } } [Association(Name="Block_Task", Storage="_Tasks", ThisKey="ID", OtherKey="BlockID")] [DataMember(Order=11, EmitDefaultValue=false)] public EntitySet<Task> Tasks { get { if ((this.serializing && (this._Tasks.HasLoadedOrAssignedValues == false))) { return null; } return this._Tasks; } set { this._Tasks.Assign(value); } } [Association(Name="Block_PlanningPointByBlock", Storage="_PlanningPointByBlocks", ThisKey="ID", OtherKey="BlockID")] [DataMember(Order=12, EmitDefaultValue=false)] public EntitySet<PlanningPointByBlock> PlanningPointByBlocks { get { if ((this.serializing && (this._PlanningPointByBlocks.HasLoadedOrAssignedValues == false))) { return null; } return this._PlanningPointByBlocks; } set { this._PlanningPointByBlocks.Assign(value); } } [Association(Name="Block_ControlPointByBlock", Storage="_ControlPointByBlocks", ThisKey="ID", OtherKey="BlockID")] [DataMember(Order=13, EmitDefaultValue=false)] public EntitySet<ControlPointByBlock> ControlPointByBlocks { get { if ((this.serializing && (this._ControlPointByBlocks.HasLoadedOrAssignedValues == false))) { return null; } return this._ControlPointByBlocks; } set { this._ControlPointByBlocks.Assign(value); } } [Association(Name="Division_Block", Storage="_Division", ThisKey="DivisionID", OtherKey="ID", IsForeignKey=true, DeleteOnNull=true, DeleteRule="CASCADE")] public Division Division { get { return this._Division.Entity; } set { Division previousValue = this._Division.Entity; if (((previousValue != value) || (this._Division.HasLoadedOrAssignedValue == false))) { this.SendPropertyChanging(); if ((previousValue != null)) { this._Division.Entity = null; previousValue.Blocks.Remove(this); } this._Division.Entity = value; if ((value != null)) { value.Blocks.Add(this); this._DivisionID = value.ID; } else { this._DivisionID = default(long); } this.SendPropertyChanged("Division"); } } } public event PropertyChangingEventHandler PropertyChanging; public event PropertyChangedEventHandler PropertyChanged; protected virtual void SendPropertyChanging() { if ((this.PropertyChanging != null)) { this.PropertyChanging(this, emptyChangingEventArgs); } } protected virtual void SendPropertyChanged(String propertyName) { if ((this.PropertyChanged != null)) { this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName)); } } private void attach_BlockByWorkstations(BlockByWorkstation entity) { this.SendPropertyChanging(); entity.Block = this; } private void detach_BlockByWorkstations(BlockByWorkstation entity) { this.SendPropertyChanging(); entity.Block = null; } private void attach_PlanningPointAppropriations(PlanningPointAppropriation entity) { this.SendPropertyChanging(); entity.Block = this; } private void detach_PlanningPointAppropriations(PlanningPointAppropriation entity) { this.SendPropertyChanging(); entity.Block = null; } private void attach_Neighbors(Neighbor entity) { this.SendPropertyChanging(); entity.FirstBlock = this; } private void detach_Neighbors(Neighbor entity) { this.SendPropertyChanging(); entity.FirstBlock = null; } private void attach_Neighbors1(Neighbor entity) { this.SendPropertyChanging(); entity.SecondBlock = this; } private void detach_Neighbors1(Neighbor entity) { this.SendPropertyChanging(); entity.SecondBlock = null; } private void attach_Tasks(Task entity) { this.SendPropertyChanging(); entity.Block = this; } private void detach_Tasks(Task entity) { this.SendPropertyChanging(); entity.Block = null; } private void attach_PlanningPointByBlocks(PlanningPointByBlock entity) { this.SendPropertyChanging(); entity.Block = this; } private void detach_PlanningPointByBlocks(PlanningPointByBlock entity) { this.SendPropertyChanging(); entity.Block = null; } private void attach_ControlPointByBlocks(ControlPointByBlock entity) { this.SendPropertyChanging(); entity.Block = this; } private void detach_ControlPointByBlocks(ControlPointByBlock entity) { this.SendPropertyChanging(); entity.Block = null; } private void Initialize() { this._BlockByWorkstations = new EntitySet<BlockByWorkstation>(new Action<BlockByWorkstation>(this.attach_BlockByWorkstations), new Action<BlockByWorkstation>(this.detach_BlockByWorkstations)); this._PlanningPointAppropriations = new EntitySet<PlanningPointAppropriation>(new Action<PlanningPointAppropriation>(this.attach_PlanningPointAppropriations), new Action<PlanningPointAppropriation>(this.detach_PlanningPointAppropriations)); this._Neighbors = new EntitySet<Neighbor>(new Action<Neighbor>(this.attach_Neighbors), new Action<Neighbor>(this.detach_Neighbors)); this._Neighbors1 = new EntitySet<Neighbor>(new Action<Neighbor>(this.attach_Neighbors1), new Action<Neighbor>(this.detach_Neighbors1)); this._Tasks = new EntitySet<Task>(new Action<Task>(this.attach_Tasks), new Action<Task>(this.detach_Tasks)); this._PlanningPointByBlocks = new EntitySet<PlanningPointByBlock>(new Action<PlanningPointByBlock>(this.attach_PlanningPointByBlocks), new Action<PlanningPointByBlock>(this.detach_PlanningPointByBlocks)); this._ControlPointByBlocks = new EntitySet<ControlPointByBlock>(new Action<ControlPointByBlock>(this.attach_ControlPointByBlocks), new Action<ControlPointByBlock>(this.detach_ControlPointByBlocks)); this._Division = default(EntityRef<Division>); OnCreated(); } [OnDeserializing()] [System.ComponentModel.EditorBrowsableAttribute(EditorBrowsableState.Never)] public void OnDeserializing(StreamingContext context) { this.Initialize(); } [OnSerializing()] [System.ComponentModel.EditorBrowsableAttribute(EditorBrowsableState.Never)] public void OnSerializing(StreamingContext context) { this.serializing = true; } [OnSerialized()] [System.ComponentModel.EditorBrowsableAttribute(EditorBrowsableState.Never)] public void OnSerialized(StreamingContext context) { this.serializing = false; } } App.config: <?xml version="1.0" encoding="utf-8" ?> <configuration> <system.web> <compilation debug="true" /> </system.web> <!-- When deploying the service library project, the content of the config file must be added to the host's app.config file. System.Configuration does not support config files for libraries. --> <system.serviceModel> <services> <service behaviorConfiguration="debugging" name="DBServicesLibrary.DBService"> </service> </services> <behaviors> <serviceBehaviors> <behavior name="DBServicesLibrary.DBServiceBehavior"> <!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment --> <serviceMetadata httpGetEnabled="True"/> <!-- To receive exception details in faults for debugging purposes, set the value below to true. Set to false before deployment to avoid disclosing exception information --> <serviceDebug includeExceptionDetailInFaults="False" /> </behavior> <behavior name="debugging"> <serviceDebug includeExceptionDetailInFaults="true"/> </behavior> </serviceBehaviors> </behaviors> </system.serviceModel> </configuration> Host part: ServiceHost svh = new ServiceHost(typeof(DBService)); svh.AddServiceEndpoint( typeof(DBServices.Contract.IDBService), new NetTcpBinding(), "net.tcp://localhost:8000"); Client part: ChannelFactory<DBServices.Contract.IDBService> scf; scf = new ChannelFactory<DBServices.Contract.IDBService>(new NetTcpBinding(),"net.tcp://localhost:8000"); _serv = scf.CreateChannel(); ((IContextChannel)_serv).OperationTimeout = new TimeSpan(0, 5, 0);

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• Oracle Fusion Applications: Changing the Game

  - by kellsey.ruppel(at)oracle.com

  Originally posted in the Oracle Profit Magazine, November 2010 Edition. When the order processing system red-flags a customer's credit status, the IT department doesn't get the customer's call. When a supplier misses a delivery date for a key automotive assembly, it's not the CIO who has to answer for the error. Knowledge workers (known in IT circles as "users") are on the front lines when an exception occurs in an established business process. They're also the ones who study sales trends to decide when to open a new store in an up-and-coming neighborhood, which products are most profitable, how employee skill sets are evolving, and which suppliers are most efficient. In short, knowledge workers are masters of business as unusual. Traditional enterprise resource planning (ERP) systems and other familiar enterprise applications excel at automating, managing, and executing standard business processes. These programs shine when everything goes as planned. Life gets even trickier when a traditional application needs to be extended with a new service or an extra step is added to a business process when new products are brought to market, divisions are merged, or companies are acquired. Monolithic applications often need the IT department to step in and make the necessary adjustments--incurring additional costs and delays. Until now. When Oracle unveiled the much-anticipated family of Oracle Fusion Applications at Oracle OpenWorld in September 2010, knowledge workers in particular had a lot to cheer about. Business users will soon have ready access to analytical information and collaboration tools in the context of what they are working on, so they can make better decisions when problems or opportunities arise. Additionally, the Oracle Fusion Applications platform will make it easy for business users to tweak processes, create new capabilities, and find information, often without the need for IT department assistance and while still following company guidelines. And IT leaders will be happy to hear about new deployment options, guided implementation and setup tools, and cost-saving management capabilities. Just as important, the underlying technologies in Oracle Fusion Applications will allow organizations to choose among their existing investments and next-generation enterprise applications so they can introduce innovations at a pace that makes the most business and financial sense. "Oracle Fusion Applications are architected so you don't have to do rip and replace," says Jim Hayes, managing director of the consulting firm Accenture. "That's very important for creating a business case that will get through the steering committee and be approved by the board. It shows you can drive value and make a difference in the near term." For these and other reasons, analysts and early adopters are calling Oracle Fusion Applications a game changer for enterprise customers. The differences become apparent in three key areas: the way we innovate, work, and adopt technology. Game Changer #1: New Standard for InnovationChange is a constant challenge for most businesses, whether the catalysts are market dynamics, new competition, or the ever-expanding regulatory environment. And, in an ongoing effort to differentiate, business leaders are constantly looking for new ways to do business, serve constituents, and bring new products and services to market. In addition, companies face significant costs to keep their applications up-to-date. For example, when a company adds new suppliers to a procurement system, the IT shop typically has to invest time, effort, and even consulting fees for custom integrations that allow various ERP systems to communicate with each other. Oracle Fusion Applications were built on Web services and a modular SOA foundation to ease customizations and integration activities among all applications--whether from Oracle or another vendor. Interfaces and updates written in ubiquitous Java, rather than a proprietary coding language, allow organizations to tap into existing in-house technical skills rather than seek expensive outside specialists. And with SOA, organizations can extend a feature set or integrate with other SOA environments by combining Web services such as "look up customer" into a new business process managed by the BPEL orchestration engine. Flexibility like this has long-term implications. "Because users capture these changes at a higher metadata layer, not in the application's code, changes and additions are protected even as new versions of Oracle Fusion Applications are released," says Steve Miranda, senior vice president of applications development at Oracle. "This is a much more sustainable approach because you don't incur costly customizations that prevent upgrades and other innovations." And changes are easier to make: if one change is made in the metadata, that change is automatically reflected throughout the application interface, business intelligence, business process, and business logic. Game Changer #2: New Standard for WorkBoosting productivity comes down to doing the basics right: running business processes more efficiently and managing exceptions more effectively, so users can accomplish more in the course of a day or spend more quality time with the most profitable customers. The fastest way to improve process efficiency is to reduce the number of steps it takes to execute common tasks, such as ordering office equipment from an internal procurement system. Oracle Fusion Applications will deliver a complete role-based user experience with business intelligence and collaboration capabilities provided in the context of the work at hand. "We created every Oracle Fusion Applications screen by asking 'What does the user need to know?' 'What does he or she need to do?' and 'Who do they need to work with to get the job done?'" Miranda explains. So when the sales department heads need new laptops, the self-service procurement screen will not only display a list of approved vendors and configurations, but also a running list of reviews by coworkers who recently purchased the various models. Embedded intelligence may also display prevailing delivery lead times based on actual order histories, not the generic shipping dates vendors may quote. The pervasive business intelligence serves many other business activities across all areas of the enterprise. For example, a manager considering whether to promote a direct report can see the person's employee profile, with a salary history, appraisal summaries, and a rundown of skills and training. This approach to business intelligence also has implications for supply chain management. "One of the challenges at Ingersoll Rand is lack of visibility in our supply chain," says Mike Macrie, global director of enterprise applications for global industrial firm Ingersoll Rand. "Oracle Fusion Applications are going to provide the embedded intelligence to give us that visibility and give us the ability to analyze those orders at any point in our supply chain." Oracle Fusion Applications will also create a "role-based user experience" that displays a work list of events that need attention, based on user job function. Role awareness guides users with daily lists of action items and exceptions. So a credit manager may see seven invoices with discounts that are about to expire or 12 suppliers that have been put on hold because credit memos are awaiting approval. Individualization extends to the search capabilities of Oracle Fusion Applications. The platform uses Web-style search screens powered by an Oracle enterprise search engine, with a security framework that filters search results so individuals will only see the internal information they're authorized to access. A further aid to productivity is Oracle Fusion Applications' integration with Web 2.0 collaboration and social networking resources for business environments. Hover-over text will reveal relevant contact information whenever the name of a person appears in an Oracle Fusion Application. Users can connect via an online chat, phone call, or instant message without leaving the main application, reducing the time required for an accounts payable staffer to resolve a mismatch between an invoiced charge and the service record, for example. Addresses of suppliers, customers, or partners will also initiate hover-over text to show contact details and Web-based maps. Finally, Oracle Fusion Applications will promote a new way of working with purpose-driven communities that can bring new efficiencies to everything from cultivating sales leads to managing new projects. As soon as a lead or project materializes, the applications will automatically gather relevant participants into an online community that shares member contact information, schedules, discussion forums, and Wiki pages. "Oracle Fusion Applications will allow us to take it to the next level with embedded Web 2.0 tools and the embedded analytics," says Steve Printz, CIO and vice president, supply chain management, at window-and-door manufacturer Pella. "[This] allows those employees today who are processing transactions to really contribute to the success of the company and become decision-makers." Game Changer #3: New Standard for Technology AdoptionAs IT becomes a dominant component of how businesses run and compete, organizations need to lower the cost of implementing applications and introducing new application features. In the past, rolling out new code often required creating a test bed system, moving beta code to a separate system for user feedback, and--once all the revisions were made--moving version one of the software onto production systems, where business users could finally get the needed new features. Oracle Fusion Applications will use a dedicated setup manager application to streamline this process. First, the setup manager will help scope out the project, querying users about their requirements. "From those questions and answers we determine the steps and the order of those steps that will enable that task," Miranda says. Next, system utilities will assign tasks to owners, track completion status, and monitor the overall status of a programming effort. Oracle Fusion Applications can then recommend Web services that allow users to migrate setup choices and steps across all the various deployments of the application. Those setup capabilities automate the migration from test systems to production systems, as well as between different business units that may be using the same application. "The self-service ability of the setup manager helps business users change setups with very little intervention from the IT team," says Ravi Kumar, vice president at IT services company Infosys. "That to me is a big difference from how we've viewed enterprise applications before." For additional flexibility, organizations will be able to adopt Oracle Fusion Applications modules in either of two modes: a single-instance alternative uses one database for all Oracle Fusion Applications, while a "pillar mode" creates separate databases to underpin each application. This means IT departments running any one of Oracle's applications or even third-party applications can plug Oracle Fusion Applications modules into their environment and see additional business value created on top of their existing systems. And Oracle Fusion Applications offer a hybrid approach to deployment. The applications are all software-as-a-service-ready, so customers can choose on-premises, public or private cloud, or a combination of these to suit their business needs. It's that combination of flexibility and a roadmap for the future that may be the biggest game changer of all. "The Oracle Fusion Applications architecture allows us to migrate our company at a pace that's consistent with our business strategy, whereas before we might have had to do it with a massive upgrade," says Macrie of Ingersoll Rand. "We're looking forward to that architecture to really give us more flexibility in how we migrate over time." For More InformationUser Input Key to the Success of Oracle Fusion ApplicationsTransforming Coexistence into Strategic ValueUnder the HoodOracle Fusion ApplicationsOracle Service-Oriented Architecture  

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• Non-Dom Element Event Binding with jQuery

  - by Rick Strahl

  Yesterday I had a short discussion with Dave Reed on Twitter regarding setting up fake ‘events’ on objects that are hookable. jQuery makes it real easy to bind events on DOM elements and with a little bit of extra work (that I didn’t know about) you can also set up binding to non-DOM element ‘event’ bindings. Assume for a second that you have a simple JavaScript object like this: var item = { sku: "wwhelp" , foo: function() { alert('orginal foo function'); } }; and you want to be notified when the foo function is called. You can use jQuery to bind the handler like this: $(item).bind("foo", function () { alert('foo Hook called'); } ); Binding alone won’t actually cause the handler to be triggered so when you call: item.foo(); you only get the ‘original’ message. In order to fire both the original handler and the bound event hook you have to use the .trigger() function: $(item).trigger("foo"); Now if you do the following complete sequence: var item = { sku: "wwhelp" , foo: function() { alert('orginal foo function'); } }; $(item).bind("foo", function () { alert('foo hook called'); } ); $(item).trigger("foo"); You’ll see the ‘hook’ message first followed by the ‘original’ message fired in succession. In other words, using this mechanism you can hook standard object functions and chain events to them in a way similar to the way you can do with DOM elements. The main difference is that the ‘event’ has to be explicitly triggered in order for this to happen rather than just calling the method directly. .trigger() relies on some internal logic that checks for event bindings on the object (attached via an expando property) which .trigger() searches for in its bound event list. Once the ‘event’ is found it’s called prior to execution of the original function. This is pretty useful as it allows you to create standard JavaScript objects that can act as event handlers and are effectively hookable without having to explicitly override event definitions with JavaScript function handlers. You get all the benefits of jQuery’s event methods including the ability to hook up multiple events to the same handler function and the ability to uniquely identify each specific event instance with post fix string names (ie. .bind("MyEvent.MyName") and .unbind("MyEvent.MyName") to bind MyEvent). Watch out for an .unbind() Bug Note that there appears to be a bug with .unbind() in jQuery that doesn’t reliably unbind an event and results in a elem.removeEventListener is not a function error. The following code demonstrates: var item = { sku: "wwhelp", foo: function () { alert('orginal foo function'); } }; $(item).bind("foo.first", function () { alert('foo hook called'); }); $(item).bind("foo.second", function () { alert('foo hook2 called'); }); $(item).trigger("foo"); setTimeout(function () { $(item).unbind("foo"); // $(item).unbind("foo.first"); // $(item).unbind("foo.second"); $(item).trigger("foo"); }, 3000); The setTimeout call delays the unbinding and is supposed to remove the event binding on the foo function. It fails both with the foo only value (both if assigned only as “foo” or “foo.first/second” as well as when removing both of the postfixed event handlers explicitly. Oddly the following that removes only one of the two handlers works: setTimeout(function () { //$(item).unbind("foo"); $(item).unbind("foo.first"); // $(item).unbind("foo.second"); $(item).trigger("foo"); }, 3000); this actually works which is weird as the code in unbind tries to unbind using a DOM method that doesn’t exist. <shrug> A partial workaround for unbinding all ‘foo’ events is the following: setTimeout(function () { $.event.special.foo = { teardown: function () { alert('teardown'); return true; } }; $(item).unbind("foo"); $(item).trigger("foo"); }, 3000); which is a bit cryptic to say the least but it seems to work more reliably. I can’t take credit for any of this – thanks to Dave Reed and Damien Edwards who pointed out some of these behaviors. I didn’t find any good descriptions of the process so thought it’d be good to write it down here. Hope some of you find this helpful.© Rick Strahl, West Wind Technologies, 2005-2010Posted in jQuery  

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