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  • Bash script runs fine, but not in cron

    - by radiotech
    I have a script that's supposed to record a shoutcast stream for an hour, convert it to mp3, and then save it. The script runs correctly when I run it from the terminal, but I can't seem to get it to run in cron (where it should run every hour at the top of the hour). Here's the line in crontab: 0 * * * * /medialib/tech/bin/recordstream 2>&1 >> /medialib/tech/cron.log and here's the script: #!/bin/bash name="$(date +%s)" mp3_name=$name.mp3 wav_name=$name.wav timeout -sHUP 60m vlc -I dummy --sout "#transcode{channels=2}:std{access=file,mux=wav,dst=/medialib/stream_backup/wav/$wav_name" /medialib/tech/lib/listen.m3u lame --mp3input /medialib/stream_backup/wav/$wav_name /medialib/stream_backup/$mp3_name rm /medialib/stream_backup/wav/$wav_name Thank you! EDIT: Contents of cron.log (This text has been in the log file since it was transferred from an old server where it was working). VLC media player 2.0.8 Twoflower Command Line Interface initialized. Type `help' for help. > Shutting down. VLC media player 2.0.8 Twoflower Command Line Interface initialized. Type `help' for help. > Shutting down.

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  • Customer Concepts TV

    - by Richard Lefebvre
    Eliminate the Guesswork in Your Customer's Sales Organization Selling is the lifeblood of every business. In the past, companies would increase headcount to boost sales. In today’s business environment, companies need to re-evaluate the way in which they sell. Sales and marketing organisations must optimise performance, increase team productivity and focus on the best opportunities. Oracle Fusion CRM has been specifically designed with tools to help sales and marketing teams improve efficiency and drive revenue. Territory modeling and management, quota and commission management, collaborative features, real-time customer information and mobile device integration are just some features incorporated. Join us on Customer Concepts TV as we aim to help you find the right strategy for your prospect and customers. Whether they already have a CRM solution in place or are looking for the next level of CRM implementation, this online TV show will give you very practical advice that can help you to make the most out of your CRM implementation.Register now to reserve your spot for this exclusive, live-stream event. Customer Concepts TV comes to you on April 24. Watch the Customer Concepts TV trailer here

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  • Do you want to be an ALM Consultant?

    - by Martin Hinshelwood
    Northwest Cadence is looking for our next great consultant! At Northwest Cadence, we have created a work environment that emphasizes excellence, integrity, and out-of-the-box thinking.  Our customers have high expectations (rightfully so) and we wouldn’t have it any other way!   Northwest Cadence has some of the most exciting customers I have ever worked with and even though I have only been here just over a month I have already: Provided training/consulting for 3 government departments Created and taught courseware for delivering Scrum to teams within a high profile multinational company Started presenting Microsoft's ALM Engagement Program  So if you are interested in helping companies build better software more efficiently, then.. Enquire at [email protected] Application Lifecycle Management (ALM) Consultant An ALM Consultant with a minimum of 8 years of relevant experience with Application Lifecycle Management, Visual Studio (including Visual Studio Team System) and software design is needed. Must provide thought leadership on best practices for enterprise architecture, understand the Microsoft technology solution stack, and have a thorough understanding of enterprise application integration. The ALM Practice Lead will play a central role in designing and implementing the overall ALM Practice strategy, including creating, updating, and delivering ALM courseware and consultancy engagements. This person will also provide project support, deliverables, and quality solutions on Visual Studio Team System that exceed client expectations. Engagements will vary and will involve providing expert training, consulting, mentoring, formulating technical strategies and policies and acting as a “trusted advisor” to customers and internal teams. Sound sense of business and technical strategy required. Strong interpersonal skills as well as solid strategic thinking are key. The ideal candidate will be capable of envisioning the solution based on the early client requirements, communicating the vision to both technical and business stakeholders, leading teams through implementation, as well as training, mentoring, and hands-on software development. The ideal candidate will demonstrate successful use of both agile and formal software development methods, enterprise application patterns, and effective leadership on prior projects. Job Requirements Minimum Education: Bachelor’s Degree (computer science, engineering, or math preferred). Locale / Travel: The Practice Lead position requires estimated 50% travel, most of which will be in the Continental US (a valid national Passport must be maintained).  This is a full time position and will be based in the Kirkland office. Preferred Education: Master’s Degree in Information Technology or Software Engineering; Premium Microsoft Certifications on .NET (MCSD) or MCPD or relevant experience; Microsoft Certified Trainer (MCT) or relevant experience. Minimum Experience and Skills: 7+ years experience with business information systems integration or custom business application design and development in a professional technology consulting, corporate MIS or software development environment. Essential Duties & Responsibilities: Provide training, consulting, and mentoring to organizations on topics that include Visual Studio Team System and ALM. Create content, including labs and demonstrations, to be delivered as training classes by Northwest Cadence employees. Lead development teams through the complete ALM and/or Visual Studio Team System solution. Be able to communicate in detail how a solution will integrate into the larger technical problem space for large, complex enterprises. Define technical solution requirements. Provide guidance to the customer and project team with respect to technical feasibility, complexity, and level of effort required to deliver a custom solution. Ensure that the solution is designed, developed and deployed in accordance with the agreed upon development work plan. Create and deliver weekly status reports of training and/or consulting progress. Engagement Responsibilities: · Provide a strong desire to provide thought leadership related to technology and to help grow the business. · Work effectively and professionally with employees at all levels of a customer’s organization. · Have strong verbal and written communication skills. · Have effective presentation, organizational and planning skills. · Have effective interpersonal skills and ability to work in a team environment. Enquire at [email protected]

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  • Error message when running OpenGL programs with bumblebee

    - by user170860
    X Error of failed request: BadDrawable (invalid Pixmap or Window parameter) Major opcode of failed request: 152 (DRI2) Minor opcode of failed request: 8 (DRI2SwapBuffers ) Resource id in failed request: 0x4200005 Serial number of failed request: 2166 Current serial number in output stream: 2167 primus: warning: timeout waiting for display worker Segmentation fault (core dumped) I don't get this on all OGL programs, but only particularly GPU intense ones. Also, I only get this using primusrun. optirun gives the same error no matter what I run: [VGL] NOTICE: Pixel format of 2D X server does not match pixel format of [VGL] Pbuffer. Disabling PBO readback. I don't know what either of these mean. Neither of them stop the programs from running, but I'd like to fix the problem if there is one. Also, I prefer to use primusrun because it is faster and it does a better job with vertical sync, however, it only supports OGL 4.2. This isn't a big issue because the programs I write are forward compatible, but it still seems odd to me. So basically I'd just like it if someone could explain to me what is happening and if there is something I can do about it. Thanks.

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  • JDK bug migration: bugs.sun.com now backed by JIRA

    - by darcy
    The JDK bug migration from a Sun legacy system to JIRA has reached another planned milestone: the data displayed on bugs.sun.com is now backed by JIRA rather than by the legacy system. Besides maintaining the URLs to old bugs, bugs filed since the migration to JIRA are now visible too. The basic information presented about a bug is the same as before, but reformatted and using JIRA terminology: Instead of a "category", a bug now has a "component / subcomponent" classification. As outlined previously, part of the migration effort was reclassifying bugs according to a new classification scheme; I'll write more about the new scheme in a subsequent blog post. Instead of a list of JDK versions a bug is "reported against," there is a list of "affected versions." The names of the JDK versions have largely been regularized; code names like "tiger" and "mantis" have been replaced by the release numbers like "5.0" and "1.4.2". Instead of "release fixed," there are now "Fixed Versions." The legacy system had many fields that could hold a sequence of text entries, including "Description," "Workaround", and "Evaluation." JIRA instead only has two analogous fields labeled as "Description" and a unified stream of "Comments." Nearly coincident with switching to JIRA, we also enabled an agent which automatically updates a JIRA issue in response to pushes into JDK-related Hg repositories. These comments include the changeset URL, the user making the push, and a time stamp. These comments are first added when a fix is pushed to a team integration repository and then added again when the fix is pushed into the master repository for a release. We're still in early days of production usage of JIRA for JDK bug tracking, but the transition to production went smoothly and over 1,000 new issues have already been filed. Many other facets of the migration are still in the works, including hosting new incidents filed at bugs.sun.com in a tailored incidents project in JIRA.

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  • Come see us at JavaU at JavaOne!

    - by tmcginn
    In just a little under a month, JavaOne will be in full swing (no pun intended) and thousands of Java developers will gather to hear the latest Java news, immerse themselves in Java technology and learn some new things. This year, I am fortunate enough to be able to attend, along with my Java curriculum development colleagues Matt Heimer and Mike Williams. We start our week at JavaOne teaching a one-day session at JavaU on Sunday morning. If you have never attended a training session through JavaU, you should check it out. There are some terrific sessions this year, and it might help to justify your trip to JavaOne if you can say it was for training! This year I am teaching a one day session on Java SE 7 New Features - a great session for anyone interested in the specific details of what is new in Java SE 7. Matt is teaching a one-day session on Developing Portable Java EE applications with the Enterprise JavaBeans 3.1 API and Java Persistence 2.0 API  EJB, and Mike is doing a one-day session on developing Rich Client applications with Java SE 7 using Java FX 2. I asked Matt and Mike to tell me what developers can expect from their sessions. Matt: "My session will get you up to speed on everything you need to know to create portable Java EE 6 applications using EJB 3.1 and JPA 2. I am going to cover why everyone can benefit from using EJBs (and why developers should relearn them if they haven't looked at them for years). Students who attend my session will see JPA examples showcasing how to use relational databases in an enterprise applications without programming to JDBC and without writing SQL statements. EJB and JPA benefit from being paired together, so I will also show how transaction management is easier in a container. I encourage students to bring a laptop and code as they learn!" Mike: "My session covers how to develop a rich client application using Java FX 2. Starting with the basic concepts of JavaFX, students will see how a JavaFX application is built from its layout, to its controls, to its data structures. In addition, more advanced controls like charts, smart tables, and transitions will be added to the application. Finally, a quick review of JavaFX concurrency and data binding is included. Blended with the core concepts the session will include some of the latest JavaFX technology. This includes using Scene Builder to create a JavaFX UI and connecting your XML UI definition to Java code.  In addition, packaging of the JavaFX application will be covered with some examples of the new native packaging features." As I mentioned, my session covers the changes in the Java for SE 7, including the  language changes that were voted into Java SE 7 from Project Coin. I will also look at how you can take advantage if the the new I/O library (NIO.2) for writing applications that work with files, directories and file systems. We will also look at the changes in Asynchronous I/O that are a part of the changes in NIO/2. We will spend some time looking at the changes to the Java Virtual Machine as well, including support for dynamically typed languages (JSR-292). We will spend some time looking at the Java Concurrency enhancements (JSR-166), including the new Fork/Join framework. And we'll round out the day with a look at changes in Swing, XML and a number of smaller changes in the API's. And, if these topics aren't grabbing your interest, take a look at the other 10 sessions that range from topics on architecture to how to pass the Oracle Certified Programmer I and II exams. See you soon!

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  • CodePlex Daily Summary for Tuesday, December 28, 2010

    CodePlex Daily Summary for Tuesday, December 28, 2010Popular ReleasesMonitorWang: MonitorWang v1.0.5 (Growler): What's new?Added Growl Notification Finalisers - these are interceptor components that work exclusively with the Growl Publisher. These allow you to modify the Growl Notification just prior to it being sent by the publisher. You can inject custom logic to precisely control how the Growl Notification will appear; this includes changing the Growl Priority level and message text. I've created to two Growl Notification Finalisers - one allows you to change the Growl Notification Priorty based on ...Catel - WPF and Silverlight MVVM library: 1.0.0: And there it is, the final release of Catel, and it is no longer a beta version!Multicore Task Framework: MTF 1.0.2: Release 1.0.2 of Multicore Task Framework.EnhSim: EnhSim 2.2.7 ALPHA: 2.2.7 ALPHAThis release supports WoW patch 4.03a at level 85 To use this release, you must have the Microsoft Visual C++ 2010 Redistributable Package installed. This can be downloaded from http://www.microsoft.com/downloads/en/details.aspx?FamilyID=A7B7A05E-6DE6-4D3A-A423-37BF0912DB84 To use the GUI you must have the .NET 4.0 Framework installed. This can be downloaded from http://www.microsoft.com/downloads/en/details.aspx?FamilyID=9cfb2d51-5ff4-4491-b0e5-b386f32c0992 - Mongoose has bee...LINQ to Twitter: LINQ to Twitter Beta v2.0.19: Mono 2.8, Silverlight, OAuth, 100% Twitter API coverage, streaming, extensibility via Raw Queries, and added documentation. Bug fixes.Hammock for REST: Hammock v1.1.4: v1.1.4 ChangesOAuth fixes for post content handling, encoding, and url parameter doubling v1.1.3 ChangesAdded an event handler for use with retries Made improvements to OAuth for performance, plus additional fixes Added OAuth token refresh support Fixed memory leak in content streaming, and regression issue with async GET call response handling v1.1.2 ChangesAdded OAuth Echo native support and static helper methods on OAuthCredentials Fixes for multi-part stream writing and recovery...Rocket Framework (.Net 4.0): Rocket Framework for Windows V 1.0.0: Architecture is reviewed and adjusted in a way so that I can introduce the Web version and WPF version of this framework next. - Rocket.Core is introduced - Controller button functions revisited and updated - DB is renewed to suite the implemented features - Create New button functionality is changed - Add Question Handling featuresFxCop Integrator for Visual Studio 2010: FxCop Integrtor 1.1.0: New FeatureSearch violation information FxCop Integrator provides the violation search feature. You can find out specific violation information by simple search expression.Analyze with FxCop project file FxCop Integrator supports code analysis with FxCop project file. You can customize code analysis behavior (e.g. analyze specifid types only, use specific rules only, and so on). ImprovementImproved the code analysis result list to show more information (added Proejct and File column). Change...NoSimplerAccounting: NoSimplerAccounting 6.0: -Fixed a bug in expense category report.NHibernate Mapping Generator: NHibernate Mapping Generator 2.0: Added support for Postgres (Thanks to Angelo)NewLife XCode: XCode v6.5.2010.1223 ????(????v3.5??): XCode v6.5.2010.1223 ????,??: NewLife.Core ??? NewLife.Net ??? XControl ??? XTemplate ????,??C#?????? XAgent ???? NewLife.CommonEnitty ??????(???,XCode??????) XCode?? ?????????,??????????????????,?????95% XCode v3.5.2009.0714 ??,?v3.5?v6.0???????????????,?????????。v3.5???????????,??????????????。 XCoder ??XTemplate?????????,????????XCode??? XCoder_Src ???????(????XTemplate????),??????????????????MiniTwitter: 1.64: MiniTwitter 1.64 ???? ?? 1.63 ??? URL ??????????????VivoSocial: VivoSocial 7.4.0: Please see changes: http://support.vivoware.com/project/ChangeLog.aspx?PROJID=48Umbraco CMS: Umbraco 4.6 Beta - codename JUNO: The Umbraco 4.6 beta (codename JUNO) release contains many new features focusing on an improved installation experience, a number of robust developer features, and contains more than 89 bug fixes since the 4.5.2 release. Improved installer experience Updated Starter Kits (Simple, Blog, Personal, Business) Beautiful, free, customizable skins included Skinning engine and Skin customization (see Skinning Documentation Kit) Default dashboards on install with hide option Updated Login t...SSH.NET Library: 2010.12.23: This release includes some bug fixes and few new fetures. Fixes Allow to retrieve big directory structures ssh-dss algorithm is fixed Populate sftp file attributes New Features Support for passhrase when private key is used Support added for diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha256 and diffie-hellman-group-exchange-sha1 key exchange algorithms Allow to provide multiple key files for authentication Add support for "keyboard-interactive" authentication method...ASP.NET MVC SiteMap provider: MvcSiteMapProvider 2.3.0: Using NuGet?MvcSiteMapProvider is also listed in the NuGet feed. Learn more... Like the project? Consider a donation!Donate via PayPal via PayPal. Release notesThis will be the last release targeting ASP.NET MVC 2 and .NET 3.5. MvcSiteMapProvider 3.0.0 will be targeting ASP.NET MVC 3 and .NET 4 Web.config setting skipAssemblyScanOn has been deprecated in favor of excludeAssembliesForScan and includeAssembliesForScan ISiteMapNodeUrlResolver is now completely responsible for generating th...Media Companion: Media Companion 3.400: Extract the entire archive to a folder which has user access rights, eg desktop, documents etc. A manual is included to get you startedWindows Media Player GNTP Plugin: WMP-GNTP v1.0.5: This is the installer for WMP-GNTP. Install it to get the plugin on your system.Google Geo Kit: Static Google Map WinForm Control Nightly Build: 12/22/2010 MD5sum - b8118c9970d6dc9480fe7c41f042537f add event OnGMapNotDefined. When anything went wrong in StaticGmap internally and return null stream, this event will be firedSilverlight Sockets Sample: No binaries: Whole source code in a ZIP. Shame 'Source Code' tab isn't working, so I'll just upload a ZIP.New ProjectsAsfMojo: AsfMojo is an open source .NET ASF parsing library, providing support for parsing WMA audio and WMV video files. It offers classes to create streams from packet data within a media file, gather file statistics and extract audio segments or frame accurate still frames.asp.net ajax file manager: Features : Full Ajax Support security View Image Create folder Delete file & folder Copy file & folder Move file & folder multiple selection ( Ctrl + Select ) Easy installation and configuration Open source. compatible IE7,IE8,FF,Safari,Chrome http://www.filemanager.3ntar.netBoxNet: BoxNet is a opensource library which will provide possibility for Windows Phone 7 developers to integrate with DropBox.C# Sqlite For WP7: C# Sqlite Port for Windows phone 7 and possibly Silverlight 3, 4. The core engine was slightly modified to be used with IsolatedStorage and SqliteClient were ported by using missing codes from Mono project in order to maximize usability and portability from desktop.Comparison of Managed Compression Algorithms: Visual Studio 2010 Console Test Harness with samples of MiniLZO, QuickLz, SharpZipLib, iRolz and other managed compression classes. Tests compression of a 2MB Word file and shows timings. Useful in deciding what type of compression to use. Developers can easily add their own.Cypher Bot 2011: Cypher Bot 2011 Brings the word cipher to a whole new level. You can now easily open, save, print, and send ciphers. Make a short message or completly encrypt a document. The cipher is impossible to figure out unless you have the keyword and algorithm to solve it! Try it out!Directed Graph for .NET: This project presents a simple directed graph implementation for the .NET framework using C# language.DynamicAccess: DynamicAccess is a library to aid connecting DLR languages such as ironpython and ironruby to non-dynamic languages like managed C++. It also fills in some gaps in the current C# support of dynamic objects, such as member access by string and deletion of members or indexes.Euro for Windows XP: A simple tool and sample to change Estonian currency from Estonian Krone (kr) to Euro (€). Applies to all versions of Windows and from .NET 2.0 which is default build. The sample creates a custom locale and updates existing users through Registry.Excel PowerShell Console: An Excel AddIn to enable using PowerShell for Excel automation.fantastic: fantasticGomarket Toolbar: GoMarket FireFox toolbarjs: jsLiving Agile's Common Framework: This project is a collection of commonly used routines here at Living Agile. There are a lot of helpful extension methods, logging, configuration and threading utilities. All other Living Agile projects have a dependency on this project.MapWindow 4: MapWindow4 is a free windows GIS application and uses an ActiveX control at it's core that can be embedded into many applications that don't support .Net such as excel, access, visual basic 6, or other pre-.Net languages.Mdelete API: Delete all files and directores in windows shell. Support long path (less then 32000 chars) and network path (eg. \\server\share or \\127.0.0.1\share)OP-Code SyntaxEditor: OP-Code SyntaxEditor is a Windows Forms Control, similar to a multi-line TextBox, which syntax highlights text and provides some features for code editing.passion: passionSharpHighlighter: SharpHighlighter is an extension for Visual Studio; a fairly simple code highlighter for C# I made it for anyone who wants to download and learn how to create is own parser or Syntax Highlighter. This sample will highlight only C# classes and structs but it's quite extensible.Test Center Locator: Test center locator makes it easier to find closest toefl or Ielts test center

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  • MPI Cluster Debugger launch integration in VS2010

    Let's assume that you have all the HPC bits installed and that you have existing MPI code (or you created a "Hello World" project using the MPI project template). Of course, you create a single MPI application and at runtime it will correspond to multiple processes (of the same app) launched on multiple nodes (i.e. machines) on the cluster. So how do you debug such a situation by simply hitting the familiar "F5" keystroke (i.e. Debug - Start Debugging)?WATCH IT INSTEAD OF READING ABOUT ITIf you can't bear to read through all the details below, just watch this 19-minute screencast explaining this VS2010 feature. Alternatively, or even additionally, keep on reading.REQUIREMENTWhen you debug an MPI application, you would want the copying of resources from your client machine (where Visual Studio is installed) to each compute node (where Windows HPC Server is installed) to take place automatically for you. 'Resources' in the previous sentence includes your application binary, plus any binary or data dependencies it may have, plus PDBs if needed, plus the debug CRT of the correct bitness, plus msvsmon for remote debugging to work. You would also want, after copying is complete, to have your app and msvsmon launched and attached so that you can hit breakpoints back in Visual Studio on your client machine. All these thing that you would want are delivered in VS2010.STEPS TO F51. In your MPI project where you have placed a breakpoint go to Project Properties - Configuration Properties - Debugging. Ensure the "Debugger to launch" combo box value is set to MPI Cluster Debugger.2. There are a whole bunch of properties here and typically you can ignore all of them except one: Run Environment. By default it is set to run 1 process on your local machine and if you change the number after that to, for example, 4 it will launch 4 processes of your app on your local machine.You want this to run on your cluster though, so go to the dropdown arrow at the end of the Run Environment cell and open it to expose the "Edit Hpc node" menu which opens the Node Selector dialog:In this dialog you can enter (or pick from a list) the cluster head node name and then the number of processes you want to execute on the cluster and then hit OK and… you are done.3. Press F5 and watch your breakpoint get hit (after giving it some time for copying, remote execution, attachment and symbol resolution to take place).GOING DEEPERIn the MPI Cluster Debugger project properties above, you can see many additional properties to the Run Environment. They are all optional, but you may want to understand them in order to fine tune your cluster debugging. Read all about each one of these on the MSDN page Configuration Properties for the MPI Cluster Debugger.In the Node Selector dialog above you can see more options than just the Head Node name and Number of Process to run. They should be self-explanatory but I also cover them in depth in my screencast showing you an example of why you would choose to schedule processes per core versus per node. You can also read about these options on MSDN as part of the page How to: Configure and Launch the MPI Cluster Debugger.To read through an example that touches on MPI project creation, project properties, node selector, and also usage of MPI with OpenMP plus MPI with PPL, read the MSDN page Walkthrough: Launching the MPI Cluster Debugger in Visual Studio 2010.Happy MPI debugging! Comments about this post welcome at the original blog.

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  • Add static ARP entries when network is brought up

    - by jozzas
    I have some pretty dumb IP devices on a subnet with my Ubuntu server, and the server receives streaming data from each device. I have run into a problem in that when an ARP request is issued to the device while it is streaming data to the server, the request is ignored, the cache entry times out and the server stops receiving the stream. So, to prevent the server from sending ARP requests to these devices altogether, I would like to add a static ARP entry for each, something like arp -i eth2 -s ip.of.the.device mac:of:the:device But these "static" ARP entries are lost if networking is disabled / enabled or if the server is rebooted. Where is the best place to automatically add these entries, preferably somewhere that will re-add them every time the interface eth2 is brought up? I really don't want to have to write a script that monitors the output of arp and re-adds the cache entries if they're missing. Edit to add what my final script was: Created the file /etc/network/if-up.d/add-my-static-arp With the contents: #!/bin/sh arp -i eth0 -s 192.168.0.4 00:50:cc:44:55:55 arp -i eth0 -s 192.168.0.5 00:50:cc:44:55:56 arp -i eth0 -s 192.168.0.6 00:50:cc:44:55:57 And then obviously add the permission to allow it to be executed: chmod +x /etc/network/if-up.d/add-my-static-arp And these arp entries will be manually added or re-added every time any network interface is brought up.

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  • Opening a new Windows from ASP.NET code behind

    - by TATWORTH
    At http://weblogs.asp.net/infinitiesloop/archive/2007/09/25/response-redirect-into-a-new-window-with-extension-methods.aspx there is an excellent post on how to open a new windows from code behind. The purists may not like it but it helped solve a problem for a client's client. Here is an update for VS2010 users: using System; using System.Web; using System.Web.UI; /// <summary> /// Response Helper for opening popup windo from code behind. /// </summary> public static class ResponseHelper {   /// <summary>   /// Redirect to popup window   /// </summary>   /// <param name="response">The response.</param>   /// <param name="url">URL to open to</param>   /// <param name="target">Target of window _self or _blank</param>   /// <param name="windowFeatures">Features such as window bar</param>   /// <remarks>   ///     <list type="bullet">   ///         <item>   /// From http://weblogs.asp.net/infinitiesloop/archive/2007/09/25/response-redirect-into-a-new-window-with-extension-methods.aspx   /// </item>   /// <item>   /// Note: If you use it outside the context of a Page request, you can't redirect to a new window. The reason is the need to call the ResolveClientUrl method on Page, which I can't do if there is no Page. I could have just built my own version of that method, but it's more involved than you might think to do it right. So if you need to use this from an HttpHandler other than a Page, you are on your own.   /// </item>   ///         <item>   /// Beware of popup blockers.   /// </item>   /// <item>   /// Note: Obviously when you are redirecting to a new window, the current window will still be hanging around. Normally redirects abort the current request -- no further processing occurs. But for these redirects, processing continues, since we still have to serve the response for the current window (which also happens to contain the script to open the new window, so it is important that it completes).   /// </item>   /// <item>   /// Sample call Response.Redirect("popup.aspx", "_blank", "menubar=0,width=100,height=100");   /// </item>   ///     </list>   /// </remarks>   public static void Redirect(this HttpResponse response, string url, string target, string windowFeatures)   {     if ((String.IsNullOrEmpty(target) || target.Equals("_self", StringComparison.OrdinalIgnoreCase)) && String.IsNullOrEmpty(windowFeatures))     {       response.Redirect(url);     }     else     {       Page page = (Page)HttpContext.Current.Handler;       if (page == null)       {         throw new InvalidOperationException("Cannot redirect to new window outside Page context.");       }       url = page.ResolveClientUrl(url);       string script;       if (!String.IsNullOrEmpty(windowFeatures))       {         script = @"window.open(""{0}"", ""{1}"", ""{2}"");";       }       else       {         script = @"window.open(""{0}"", ""{1}"");";       }       script = String.Format(script, url, target, windowFeatures);       ScriptManager.RegisterStartupScript(page, typeof(Page), "Redirect", script, true);     }   } }

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  • apt-get upgrade stuck at the same package

    - by decibyte
    Current status I've started to suspect this is not an Ubuntu issue, but related to the internet connection here at my work. Until I'm sure, Im leaving my question below: Original question I'm stuck, can't upgrade my system. Running sudo apt-get upgrade gives me the following: mmm@alalunga:~$ sudo apt-get upgrade Reading package lists... Done Building dependency tree Reading state information... Done The following packages have been kept back: ginn libgrip0 linux-generic-pae linux-headers-generic-pae linux-image-generic-pae The following packages will be upgraded: apport apport-gtk bind9-host build-essential dhcp3-client dhcp3-common dnsutils eog evince evince-common firefox firefox-branding firefox-dbg firefox-globalmenu firefox-gnome-support firefox-locale-en gimp gimp-data gir1.2-totem-1.0 glib-networking glib-networking-common glib-networking-services gnupg gpgv icedtea-6-jre-cacao icedtea-6-jre-jamvm icedtea-6-plugin icedtea-netx icedtea-netx-common icedtea-plugin isc-dhcp-client isc-dhcp-common libapache2-mod-php5 libart-2.0-2 libbind9-80 libdns81 libevince3-3 libgimp2.0 libisc83 libisccc80 libisccfg82 liblwres80 libssl-dev libssl-doc libssl1.0.0 libtotem0 linux-firmware linux-libc-dev openjdk-6-jre openjdk-6-jre-headless openjdk-6-jre-lib openssl php-pear php5-cli php5-common php5-curl php5-dev php5-gd php5-mysql php5-xsl policykit-1-gnome python-apport python-django python-gst0.10 python-problem-report resolvconf thunderbird thunderbird-globalmenu thunderbird-gnome-support totem totem-common totem-mozilla totem-plugins xserver-xorg-input-synaptics 74 upgraded, 0 newly installed, 0 to remove and 5 not upgraded. Need to get 317 MB/327 MB of archives. After this operation, 1.481 kB of additional disk space will be used. Do you want to continue [Y/n]? Get:1 http://archive.ubuntu.com/ubuntu/ precise-updates/main openjdk-6-jre-headless i386 6b24-1.11.4-1ubuntu0.12.04.1 [27,3 MB] Get:2 http://archive.ubuntu.com/ubuntu/ precise-updates/main openjdk-6-jre-headless i386 6b24-1.11.4-1ubuntu0.12.04.1 [27,3 MB] Get:3 http://archive.ubuntu.com/ubuntu/ precise-updates/main openjdk-6-jre-headless i386 6b24-1.11.4-1ubuntu0.12.04.1 [27,3 MB] Get:4 http://archive.ubuntu.com/ubuntu/ precise-updates/main openjdk-6-jre-headless i386 6b24-1.11.4-1ubuntu0.12.04.1 [27,3 MB] Get:5 http://archive.ubuntu.com/ubuntu/ precise-updates/main openjdk-6-jre-headless i386 6b24-1.11.4-1ubuntu0.12.04.1 [27,3 MB] Get:6 http://archive.ubuntu.com/ubuntu/ precise-updates/main openjdk-6-jre-headless i386 6b24-1.11.4-1ubuntu0.12.04.1 [27,3 MB] Get:7 http://archive.ubuntu.com/ubuntu/ precise-updates/main openjdk-6-jre-headless i386 6b24-1.11.4-1ubuntu0.12.04.1 [27,3 MB] 9% [7 openjdk-6-jre-headless 27,3 MB/27,3 MB 100%] It keeps downloading the package openjdk-6-jre-headless, then does nothing for a while (hanging on what's the last line above), then download the package again. It's at its 13th download attempt at the moment of writing. The actual downloads seem to be done just fine, but whatever it does after downloading seems to be failing. I tried removing openjdk-6, but then it wanted to install openjdk-7 instead, with the same result, hanging at openjdk-7-jre-headless instead. I also tried changing servers from my local (Danish) to the main server. No luck. It's also keeping me from upgrading alle the other packages. What to do? Update After following instructions in the answer by @lpanebr, it is now stuck at the linux-firmware package. So, maybe it's a more general problem than being related to specific package(s)? Although it did download some packages without problems before getting stuck at linux-firmware.

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  • How to Get AirVideo Features in Android for Free

    - by Zainul Franciscus
    AirVideo makes it possible for iPhone, iPad, or iPod Touch users to stream any video format on their devices. If you’re an Android user, then you are in luck, because you can get AirVideo’s features for free with VLC-Share. In today’s tutorial, we will start off by giving you an instruction on how to install VLC-Share, followed by configuring firewall and port forwarding, and we complete the tutorial with a walk through of VLC-Share features. Wallpaper available from our Naruto Customization set. Latest Features How-To Geek ETC How To Make Hundreds of Complex Photo Edits in Seconds With Photoshop Actions How to Enable User-Specific Wireless Networks in Windows 7 How to Use Google Chrome as Your Default PDF Reader (the Easy Way) How To Remove People and Objects From Photographs In Photoshop Ask How-To Geek: How Can I Monitor My Bandwidth Usage? Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Smart Taskbar Is a Thumb Friendly Android Task Launcher Comix is an Awesome Comics Archive Viewer for Linux Get the MakeUseOf eBook Guide to Speeding Up Windows for Free Need Tech Support? Call the Star Wars Help Desk! [Video Classic] Reclaim Vertical UI Space by Adding a Toolbar to the Left or Right Side of Firefox Androidify Turns You into an Android-style Avatar

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  • Reading OpenDocument spreadsheets using C#

    - by DigiMortal
    Excel with its file formats is not the only spreadsheet application that is widely used. There are also users on Linux and Macs and often they are using OpenOffice and other open-source office packages that use ODF instead of OpenXML. In this post I will show you how to read Open Document spreadsheet in C#. Importer as example My previous post about importers showed you how to build flexible importers support to your web application. This post introduces you practical example of one of my importers. Of course, sensitive code is omitted. We start with ODS importer class and we add new methods as we go. public class OdsImporter : ImporterBase {     public OdsImporter()     {     }       public override string[] SupportedFileExtensions     {         get { return new[] { "ods" }; }     }       public override ImportResult Import(Stream fileStream, long companyId, short year)     {         string contentXml = GetContentXml(fileStream);           var result = new ImportResult();         var doc = XDocument.Parse(contentXml);           var rows = doc.Descendants("{urn:oasis:names:tc:opendocument:xmlns:table:1.0}table-row").Skip(1);           foreach (var row in rows)         {             ImportRow(row, companyId, year, result);         }           return result;     } } The class given here just extends base class for importers (previous post uses interface but as I already told there you move to abstract base class when writing code for real projects). Import method reads data from *.ods file, parses it (it is XML), finds all data rows and imports data. As you may see then first row is skipped. This is because the first row on my sheet is always headers row. Reading ODS file Our import method starts with getting XML from *.ods file. ODS files like OpenXml files are zipped containers that contain different files. We need content.xml as all data is kept there. To get the contents of file we use SharpZipLib library to read uploaded file as *.zip file. private static string GetContentXml(Stream fileStream) {     var contentXml = "";       using (var zipInputStream = new ZipInputStream(fileStream))     {         ZipEntry contentEntry = null;         while ((contentEntry = zipInputStream.GetNextEntry()) != null)         {             if (!contentEntry.IsFile)                 continue;             if (contentEntry.Name.ToLower() == "content.xml")                 break;         }           if (contentEntry.Name.ToLower() != "content.xml")         {             throw new Exception("Cannot find content.xml");         }           var bytesResult = new byte[] { };         var bytes = new byte[2000];         var i = 0;           while ((i = zipInputStream.Read(bytes, 0, bytes.Length)) != 0)         {             var arrayLength = bytesResult.Length;             Array.Resize<byte>(ref bytesResult, arrayLength + i);             Array.Copy(bytes, 0, bytesResult, arrayLength, i);         }         contentXml = Encoding.UTF8.GetString(bytesResult);     }     return contentXml; } If here is content.xml file then we stop browsing the file. We read this file to memory and return it as UTF-8 format string. Importing rows Our last task is to import rows. We use special method for this as we have to handle some tricks here. To keep files smaller the cell count on row is not always the same. If we have more than one empty cell one after another then ODS keeps only one cell for sequential empty cells. This cell has attribute called number-columns-repeated and it’s value is set to the number of sequential empty cells. This is why we use two indexers for cells collection. private void ImportRow(XElement row, ImportResult result) {     var cells = (from c in row.Descendants()                 where c.Name == "{urn:oasis:names:tc:opendocument:xmlns:table:1.0}table-cell"                 select c).ToList();       var dto = new DataDto();       var count = cells.Count;     var j = -1;       for (var i = 0; i < count; i++)     {         j++;         var cell = cells[i];         var attr = cell.Attribute("{urn:oasis:names:tc:opendocument:xmlns:table:1.0}number-columns-repeated");         if (attr != null)         {             var numToSkip = 0;             if (int.TryParse(attr.Value, out numToSkip))             {                 j += numToSkip - 1;             }         }           if (i > 30) break;         if (j == 0)         {             dto.SomeProperty = cells[i].Value;         }         if (j == 1)         {             dto.SomeOtherProperty = cells[i].Value;         }         // some more data reading     }       // save data } You can define your own class for import results and add there all problems found during data import. Your application gets the results and shows them to user. Conclusion Reading ODS files may seem to complex task but actually it is very easy if we need only data from those documents. We can use some zip-library to get the content file and then parse it to XML. It is not hard to go through the XML but there are some optimization tricks we have to know. The code here is safe to use in web applications as it is not using any API-s that may have special needs to server and infrastructure.

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  • One Does Like To Code: DevoxxUK

    - by Tori Wieldt
    What's happening at Devoxx UK? I'll be talking to Rock Star speakers, Community leaders, authors, JSR leads and more.  This video is a short introduction.   Check out these great sessions: Thursday, June 12Perchance to Stream with Java 8by Paul Sandoz13:40 - 14:30 | Room 1 Making the Internet-of-Things a Reality with Embedded Javaby Simon Ritter11:50 - 12:40 | Room 4 Java SE 8 Lambdas and Streams Labby Simon Ritter17:00 - 20:00 | Room Mezzanine Safety Not Guaranteed: Sun. Misc. Unsafe and the Quest for Safe Alternativesby Paul Sandoz18:45 - 19:45 | Room 3 Join the Java EvolutionHeather VanCuraPatrick Curran19:45 – 20:45 | Room 2  Glassfish is Here to StayDavid DelabasseeAntonio Goncalves19:45 – 20:45 | Room Expo Here is the full line-up of sessions. Devoxx UK includes a Hackergarten, where can devs work an Open Source project of their choice. The Adopt OpenJDK and Adopt a JSR Program folks will be there to help attendees contribute back to Java SE and Java EE itself!   Saturday includes a special Devoxx4Kids event in conjunction with the London Java Community. It's design to teach 10-16 year-olds simple programming concepts, robotics, electronics, and games making. Workshops include LEGO Mindstorms (robotic engineering), Greenfoot (programming), Arduino (electronics), Scratch (games making), Minecraft Modding (game hacking) and NAO (robotic programming). Small fee, you must register. If you can't attend Devoxx UK in person, stay tuned to the YouTube/Java channel. I'll be doing plenty of interviews so you can join the fun from around the world. 

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  • Internet Explorer will not open Office files

    - by geekrutherford
    An issue was brought to my attention today at work where certain users were unable to open Office files (specifically Excel) from Internet Explorer 7.   The user would click on a button which simply generated an inline JS call to open a pop-up pointing to the .xlsx file on the server. IE would open the pop-up and then shortly thereafter the pop-up would disappear without the file ever opening.   I tweaked the security settings in the users browser...added the site to the list of trusted sites and lowered the security settings to Medium-Low. This allowed IE to at least prompt with the Save or Open message. Clicking either open resulted in "Internet Explorer Could Not Open the Site...".   Perturbed, I retreated back to Geek Central (aka my desk) and modified my application such that instead of simply pointing the browser to the file and now used Response.TransmitFile() to stream it to the browser instead. I thought to myself "this is perfect, it has to work!!!". Alas, no luck.   Bewildered and confused and returned to the lone users computer and started looking around the various IE options. I stumbled upon "Clear SSL State" under the "Content" tab. This appears to clear out all SSL certificates on the client forcing it to refresh. Doing this in concert with resetting the security levels for all zones back to their defaults seemed to do the trick.

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  • What triggered the popularity of lambda functions in modern mainstream programming languages?

    - by Giorgio
    In the last few years anonymous functions (AKA lambda functions) have become a very popular language construct and almost every major / mainstream programming language has introduced them or is planned to introduce them in an upcoming revision of the standard. Yet, anonymous functions are a very old and very well-known concept in Mathematics and Computer Science (invented by the mathematician Alonzo Church around 1936, and used by the Lisp programming language since 1958, see e.g. here). So why didn't today's mainstream programming languages (many of which originated 15 to 20 years ago) support lambda functions from the very beginning and only introduced them later? And what triggered the massive adoption of anonymous functions in the last few years? Is there some specific event, new requirement or programming technique that started this phenomenon? IMPORTANT NOTE The focus of this question is the introduction of anonymous functions in modern, main-stream (and therefore, maybe with a few exceptions, non functional) languages. Also, note that anonymous functions (blocks) are present in Smalltalk, which is not a functional language, and that normal named functions have been present even in procedural languages like C and Pascal for a long time. Please do not overgeneralize your answers by speaking about "the adoption of the functional paradigm and its benefits", because this is not the topic of the question.

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  • What can I do about Hack Attempts

    - by Matt
    I have an ASP.net website hosted using the Ultidev Web Server Pro. Every day I get a steady stream of errors generated by my application where page requests were requested and denied. This is obviously someone/something trying to find any exploits on my website. Here is an example log: 28/08/2012 11:37:11 - File not Found:http://MyWebServer/phpmyadmin/index.php 28/08/2012 11:37:11 - File not Found:http://MyWebServer/phpMyAdmin/index.php 28/08/2012 11:37:12 - File not Found:http://MyWebServer/phpMyAdmin-2/index.php 28/08/2012 11:37:12 - File not Found:http://MyWebServer/php-my-admin/index.php 28/08/2012 11:37:13 - File not Found:http://MyWebServer/phpMyAdmin-2.2.3/index.php 28/08/2012 11:37:13 - File not Found:http://MyWebServer/phpMyAdmin-2.2.6/index.php 28/08/2012 11:37:14 - File not Found:http://MyWebServer/phpMyAdmin-2.5.1/index.php 28/08/2012 11:37:14 - File not Found:http://MyWebServer/phpMyAdmin-2.5.4/index.php 28/08/2012 11:37:15 - File not Found:http://MyWebServer/phpMyAdmin-2.5.5-rc1/index.php 28/08/2012 11:37:15 - File not Found:http://MyWebServer/phpMyAdmin-2.5.5-rc2/index.php 28/08/2012 11:37:15 - File not Found:http://MyWebServer/phpMyAdmin-2.5.5/index.php 28/08/2012 11:37:16 - File not Found:http://MyWebServer/phpMyAdmin-2.5.5-pl1/index.php 28/08/2012 11:37:16 - File not Found:http://MyWebServer/phpMyAdmin-2.5.6-rc1/index.php 28/08/2012 11:37:17 - File not Found:http://MyWebServer/phpMyAdmin-2.5.6-rc2/index.php 28/08/2012 11:37:18 - File not Found:http://MyWebServer/phpMyAdmin-2.5.6/index.php 28/08/2012 11:37:18 - File not Found:http://MyWebServer/phpMyAdmin-2.5.7/index.php 28/08/2012 11:37:19 - File not Found:http://MyWebServer/phpMyAdmin-2.5.7-pl1/index.php 28/08/2012 13:52:07 - File not Found:http://MyWebServer/admin/pma/translators.html Is this normal? Is there anything I can do to protect myself against this?

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  • Stir Trek 2: Iron Man Edition

    Next month (7 May 2010) Ill be presenting at the second annual Stir Trek event in Columbus, Ohio. Stir Trek (so named because last year its themes mixed MIX and the opening of the Star Trek movie) is a very cool local event.  Its a lot of fun to present at and to attend, because of its unique venue: a movie theater.  And whats more, the cost of admission includes a private showing of a new movie (this year: Iron Man 2).  The sessions cover a variety of topics (not just Microsoft), similar to CodeMash.  The event recently sold out, so Im not telling you all of this so that you can go and sign up (though I believe you can get on the waitlist still).  Rather, this is pretty much just an excuse for me to talk about my session as a way to organize my thoughts. Im actually speaking on the same topic as I did last year, but the key difference is that last year the subject of my session was nowhere close to being released, and this year, its RTM (as of last week).  Thats right, the topic is Whats New in ASP.NET 4 how did you guess? Whats New in ASP.NET 4 So, just what *is* new in ASP.NET 4?  Hasnt Microsoft been spending all of their time on Silverlight and MVC the last few years?  Well, actually, no.  There are some pretty cool things that are now available out of the box in ASP.NET 4.  Theres a nice summary of the new features on MSDN.  Here is my super-brief summary: Extensible Output Caching use providers like distributed cache or file system cache Preload Web Applications IIS 7.5 only; avoid the startup tax for your site by preloading it. Permanent (301) Redirects are finally supported by the framework in one line of code, not two. Session State Compression Can speed up session access in a web farm environment.  Test it to see. Web Forms Features several of which mirror ASP.NET MVC advantages (viewstate, control ids) Set Meta Keywords and Description easily Granular and inheritable control over ViewState Support for more recent browsers and devices Routing (introduced in 3.5 SP1) some new features and zero web.config changes required Client ID control makes client manipulation of DOM elements much simpler. Row Selection in Data Controls fixed (id based, not row index based) FormView and ListView enhancements (less markup, more CSS compliant) New QueryExtender control makes filtering data from other Data Source Controls easy More CSS and Accessibility support Reduction of Tables and more control over output for other template controls Dynamic Data enhancements More control templates Support for inheritance in the Data Model New Attributes ASP.NET Chart Control (learn more) Lots of IDE enhancements Web Deploy tool My session will cover many but not all of these features.  Theres only an hour (3pm-4pm), and its right before the prize giveaway and movie showing, so Ill be moving quickly and most likely answering questions off-line via email after the talk. Hope to see you there! 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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  • Linqpad and StreamInsight

    Slightly before the announcement of StreamInsight being available for Linqpad I downloaded it from here.  I had seen Roman Schindlauer demonstrate it at Teched and it looked a really good tool to do some StreamInsight dev.   You will need .Net 4.0 and StreamInsight installed. Here’s what you need to do after downloading and installing Linqpad. Add a new connection   The next thing we need to do is install and enable the StreamInsight driver.  Choose to view more drivers.   Choose StreamInsight     Select the driver after install     I have chosen the Default Context.     And after all that I can finally get to writing my query.  This is a very simple query where I turn a collection (IEnumerable) into a PointStream.  After doing that I create 30 minute windows over the stream before outputting the count of events in each of those windows to the result window.     I have played with Linqpad only a little but I think it is going to be a really good tool to get ideas developed and quickly.  I have also enabled Autcompletion (paid £25) and I recommend it.

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  • Removing Barriers to Create Effective Data Models

    After years of creating and maintaining data models, I have started to notice common barriers that decrease the accuracy and usefulness of models. In my opinion, the main causes of these barriers are the lack of knowledge and communication from within a company. The lack of knowledge in regards to data models or data modeling can take many forms. Company Culture Knowledge Whether documented or undocumented, existing business rules of a company can affect how data is modeled. For example, if a company only allows 1 assigned person per customer to be able to manipulate a customer’s record then then a data model that includes an associated table that joins customers and employee’s would be unneeded because that would allow for the possibility of multiple employees to handle a customer because of the potential for a many to many relationship between Customers and Employees. Technical Knowledge Depending on the data modeler’s proficiency in modeling data they can inadvertently cause issues and/or complications with a design without even noticing. It is important that companies share data modeling responsibilities so that the models are developed from multiple perspectives of a system, company and the original problem.  In addition, the tools that a company selects to create data models can also affect the accuracy of the model if designer are not familiar with the tools or the tools are too complex to use for the designer. Existing System Knowledge In order for a data modeler to model data for an existing system so that new changes can be applied to a system then they need to at least know the basic concepts of a system so that they can work within it. This will promote reusability of data and prevent the chance of duplicating data. Project Knowledge This should be pretty obvious, but it is very hard to create an accurate data model without knowing what data needs to be modeled. I have always found it strange that I have been asked to start modeling data prior to a client formalizing any requirements. Usually when this happens I have to make several iterations to a model, and the client still does not know exactly what they want.  In addition additional issues can arise when certain stakeholders of a project are not consulted prior to the design or after the project is over because it can cause miss understandings and confusion by the end user as well as possibly not solving the original problem for which a project is intended to solve. One common thread between each type of knowledge is that they can all be avoided through the use of good communication. For example, if a modeler is new to a company then they should ask older employees about any business specific rules that may be documented or undocumented that must be applied to projects in general. Furthermore, if a modeler is not really familiar with a specific data modeling software then they need to speak up and ask for help form other employees or their manager. This will not only help the modeler in the project, but also help them in future projects that they do for the company. Additionally, if a project is not clearly defined prior to a data modeler being assigned the modeling project then it is their responsibility to communicate with the other stakeholders to clarify any part of a project that is unclear so that the data model that is created is accurately aligned with a project.

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  • Evolution of mainstream programming languages: simplicity versus complexity.

    - by Giorgio
    I had posted this question on http://stackoverflow.com but I was suggested that it may be more appropriate to post it on this forum. I did a quick search on this site and it seems to me that this question has not been asked yet. Please give me a hint if the topic has been raised already by someone else. Update I have rephrased this question, removed personal opinions and made it shorter. I hope in this way it is better suited for this forum. By looking at the recent development of Java (Java 7) and C++ (C++0x) I see that new features are added to these languages. For sure this makes it easier to use certain programming idioms, adding to the productivity of developers. On the other hand, there might be the following risks A language becomes too big, complex, and difficult to understand. It lacks coherence in the design, e.g. if it mixes different paradigms like object-orientation and functional programming, which might not fit well together. Questions: what is more important to you as a developer: to have a rich language that captures a large collection of programming idioms or to have a small language that aims at coherence and simplicity (of course, with a good deal of libraries and tools accompanying it)? Or is it possible to have both? With respect to these issues: How do you judge the current evolutions of main-stream programming languages like Java or C++? Are they becoming too complex, less intuitive? Do they have enough features? Do they need more? Are they still easy enough to understand and use?

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  • Recommened design pattern to handle multiple compression algorithms for a class hierarchy

    - by sgorozco
    For all you OOD experts. What would be the recommended way to model the following scenario? I have a certain class hierarchy similar to the following one: class Base { ... } class Derived1 : Base { ... } class Derived2 : Base { ... } ... Next, I would like to implement different compression/decompression engines for this hierarchy. (I already have code for several strategies that best handle different cases, like file compression, network stream compression, legacy system compression, etc.) I would like the compression strategy to be pluggable and chosen at runtime, however I'm not sure how to handle the class hierarchy. Currently I have a tighly-coupled design that looks like this: interface ICompressor { byte[] Compress(Base instance); } class Strategy1Compressor : ICompressor { byte[] Compress(Base instance) { // Common compression guts for Base class ... // if( instance is Derived1 ) { // Compression guts for Derived1 class } if( instance is Derived2 ) { // Compression guts for Derived2 class } // Additional compression logic to handle other class derivations ... } } As it is, whenever I add a new derived class inheriting from Base, I would have to modify all compression strategies to take into account this new class. Is there a design pattern that allows me to decouple this, and allow me to easily introduce more classes to the Base hierarchy and/or additional compression strategies?

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  • Access Control Service: Transitioning between Active and Passive Scenarios

    - by Your DisplayName here!
    As I mentioned in my last post, ACS features a number of ways to transition between protocol and token types. One not so widely known transition is between passive sign ins (browser) and active service consumers. Let’s see how this works. We all know the usual WS-Federation handshake via passive redirect. But ACS also allows driving the sign in process yourself via specially crafted WS-Federation query strings. So you can use the following URL to sign in using LiveID via ACS. ACS will then redirect back to the registered reply URL in your application: GET /login.srf?   wa=wsignin1.0&   wtrealm=https%3a%2f%2faccesscontrol.windows.net%2f&   wreply=https%3a%2f%2fleastprivilege.accesscontrol.windows.net%3a443%2fv2%2fwsfederation&   wp=MBI_FED_SSL&   wctx=pr%3dwsfederation%26rm%3dhttps%253a%252f%252froadie%252facs2rp%252frest%252f The wsfederation bit in the wctx parameter indicates, that the response to the token request will be transmitted back to the relying party via a POST. So far so good – but how can an active client receive that token now? ACS knows an alternative way to send the token request response. Instead of doing the redirect back to the RP, it emits a page that in turn echoes the token response using JavaScript’s window.external.notify. The URL would look like this: GET /login.srf?   wa=wsignin1.0&   wtrealm=https%3a%2f%2faccesscontrol.windows.net%2f&   wreply=https%3a%2f%2fleastprivilege.accesscontrol.windows.net%3a443%2fv2%2fwsfederation&   wp=MBI_FED_SSL&   wctx=pr%3djavascriptnotify%26rm%3dhttps%253a%252f%252froadie%252facs2rp%252frest%252f ACS would then render a page that contains the following script block: <script type="text/javascript">     try{         window.external.Notify('token_response');     }     catch(err){         alert("Error ACS50021: windows.external.Notify is not registered.");     } </script> Whereas token_response is a JSON encoded string with the following format: {   "appliesTo":"...",   "context":null,   "created":123,   "expires":123,   "securityToken":"...",   "tokenType":"..." } OK – so how does this all come together now? As an active client (Silverlight, WPF, WP7, WinForms etc). application, you would host a browser control and use the above URL to trigger the right series of redirects. All the browser controls support one way or the other to register a callback whenever the window.external.notify function is called. This way you get the JSON string from ACS back into the hosting application – and voila you have the security token. When you selected the SWT token format in ACS – you can use that token e.g. for REST services. When you have selected SAML, you can use the token e.g. for SOAP services. In the next post I will show how to retrieve these URLs from ACS and a practical example using WPF.

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  • Cleaning your BizTalk Build Server

    - by Michael Stephenson
    Just a little note for myself this one.At one of my customers where it is still BizTalk 2006 one of the build servers is intermittently getting issues so I wanted to run a script periodically to clean things up a little.  The below script is an example of how you can stop cruise control and all of the biztalk services, then clean the biztalk databases and reset the backup process and then click everything off again.This should keep the server a little cleaner and reduce the number of builds that occasionally fail for adhoc environmental issues.REM Server Clean ScriptREM =================== REM This script is ran to move the build server back to a clean state echo Stop Cruise Controlnet stop CCService echo Stop IISiisreset /stop echo Stop BizTalk Servicesnet stop BTSSvc$<Name of BizTalk Host><Repeat for other BizTalk services> echo Stop SSOnet stop ENTSSO echo Stop SQL Job Agentnet stop SQLSERVERAGENT echo Clean Message Boxsqlcmd -E -d BizTalkMsgBoxDB -Q "Exec bts_CleanupMsgbox"sqlcmd -E -d BizTalkMsgBoxDB -Q "Exec bts_PurgeSubscriptions"  echo Clean Tracking Databasesqlcmd -E -d BizTalkDTADb -Q "Exec dtasp_CleanHMData" echo Reset TDDS Stream Statussqlcmd -E -d BizTalkDTADb -Q "Update TDDS_StreamStatus Set lastSeqNum = 0" echo Force Full Backupsqlcmd -E -d BizTalkMgmtDB -Q "Exec sp_ForceFullBackup" echo Clean Backup Directorydel E:\BtsBackups\*.* /q  echo Start SSOnet start ENTSSO echo Start SQL Job Agentnet start SQLSERVERAGENT echo Start BizTalk Servicesnet start BTSSvc$<Name of BizTalk Host><Repeat for other BizTalk services> echo Start IISiisreset /start echo Start Cruise Controlnet start CCService

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  • Brocken package for libavcodec54 & libx264-123 in ubuntu 14.04LTS

    - by Kachavarapu Ajay
    $ sudo apt-get install -f [sudo] password for ajay: Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following extra packages will be installed: libx264-123 The following NEW packages will be installed: libx264-123 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. 2 not fully installed or removed. Need to get 0 B/345 kB of archives. After this operation, 1,005 kB of additional disk space will be used. Do you want to continue? [Y/n] y (Reading database ... 166965 files and directories currently installed.) Preparing to unpack .../libx264-123_0.123.2189+git35cf912-1ubuntu4_amd64.deb ... Unpacking libx264-123:amd64 (2:0.123.2189+git35cf912-1ubuntu4) ... dpkg-deb (subprocess): decompressing archive member: lzma error: compressed data is corrupt dpkg-deb: error: subprocess <decompress> returned error exit status 2 dpkg: error processing archive /var/cache/apt/archives/libx264-123_0.123.2189+git35cf912-1ubuntu4_amd64.deb (--unpack): cannot copy extracted data for './usr/lib/x86_64-linux-gnu/libx264.so.123' to '/usr/lib/x86_64-linux-gnu/libx264.so.123.dpkg-new': unexpected end of file or stream Errors were encountered while processing: /var/cache/apt/archives/libx264-123_0.123.2189+git35cf912-1ubuntu4_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1)

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