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  • How does dependecy injection increase coupling?

    - by B?????
    On the Wikipedia page on dependency injection, the disadvantages section tells us this: Dependency injection increases coupling by requiring the user of a subsystem to provide for the needs of that subsystem. with a link to an article against dependency injection. Dependency injection makes a class use the interface instead of the concrete implementation. That should result in decreased coupling, no? What am I missing? How is dependency injection increasing coupling between classes?

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  • The Case for Gnome Shell

    <b>WorksWithU:</b> "A couple weeks ago, I wrote some posts on GNOME Shell which included a number of criticisms of the desktop environment that will likely become Ubuntu'S default at some point in the future. Jon McCann, lead designer for GNOME Shell, recently got in touch to offer his responses to the problems I found with the new interface"

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  • DevConnections jQuery Session Slides and Samples posted

    - by Rick Strahl
    I’ve posted all of my slides and samples from the DevConnections VS 2010 Launch event last week in Vegas. All three sessions are contained in a single zip file which contains all slide decks and samples in one place: www.west-wind.com/files/conferences/jquery.zip There were 3 separate sessions: Using jQuery with ASP.NET Starting with an overview of jQuery client features via many short and fun examples, you'll find out about core features like the power of selectors to select document elements, manipulate these elements with jQuery's wrapped set methods in a browser independent way, how to hook up and handle events easily and generally apply concepts of unobtrusive JavaScript principles to client scripting. The session also covers AJAX interaction between jQuery and the .NET server side code using several different approaches including sending HTML and JSON data and how to avoid user interface duplication by using client side templating. This session relies heavily on live examples and walk-throughs. jQuery Extensibility and Integration with ASP.NET Server Controls One of the great strengths of the jQuery Javascript framework is its simple, yet powerful extensibility model that has resulted in an explosion of plug-ins available for jQuery. You need it - chances are there's a plug-in for it! In this session we'll look at a few plug-ins to demonstrate the power of the jQuery plug-in model before diving in and creating our own custom jQuery plug-ins. We'll look at how to create a plug-in from scratch as well as discussing when it makes sense to do so. Once you have a plug-in it can also be useful to integrate it more seamlessly with ASP.NET by creating server controls that coordinate both server side and jQuery client side behavior. I'll demonstrate a host of custom components that utilize a combination of client side jQuery functionality and server side ASP.NET server controls that provide smooth integration in the user interface development process. This topic focuses on component development both for pure client side plug-ins and mixed mode controls. jQuery Tips and Tricks This session was kind of a last minute substitution for an ASP.NET AJAX talk. Nothing too radical here :-), but I focused on things that have been most productive for myself. Look at the slide deck for individual points and some of the specific samples.   It was interesting to see that unlike in previous conferences this time around all the session were fairly packed – interest in jQuery is definitely getting more pronounced especially with microsoft’s recent announcement of focusing on jQuery integration rather than continuing on the path of ASP.NET AJAX – which is a welcome change. Most of the samples also use the West Wind Web & Ajax Toolkit and the support tools contained within it – a snapshot version of the toolkit is included in the samples download. Specicifically a number of the samples use functionality in the ww.jquery.js support file which contains a fairly large set of plug-ins and helper functionality – most of these pieces while contained in the single file are self-contained and can be lifted out of this file (several people asked). Hopefully you'll find something useful in these slides and samples.© Rick Strahl, West Wind Technologies, 2005-2010Posted in ASP.NET  jQuery  

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  • Hosting WCF service in Windows Service

    - by DigiMortal
    When building Windows services we often need a way to communicate with them. The natural way to communicate to service is to send signals to it. But this is very limited communication. Usually we need more powerful communication mechanisms with services. In this posting I will show you how to use service-hosted WCF web service to communicate with Windows service. Create Windows service Suppose you have Windows service created and service class is named as MyWindowsService. This is new service and all we have is default code that Visual Studio generates. Create WCF service Add reference to System.ServiceModel assembly to Windows service project and add new interface called IMyService. This interface defines our service contracts. [ServiceContract] public interface IMyService {     [OperationContract]     string SayHello(int value); } We keep this service simple so it is easy for you to follow the code. Now let’s add service implementation: [ServiceBehavior(InstanceContextMode=InstanceContextMode.Single)] public class MyService : IMyService {     public string SayHello(int value)     {         return string.Format("Hello, : {0}", value);     } } With ServiceBehavior attribute we say that we need only one instance of WCF service to serve all requests. Usually this is more than enough for us. Hosting WCF service in Windows Service Now it’s time to host our WCF service and make it available in Windows service. Here is the code in my Windows service: public partial class MyWindowsService : ServiceBase {     private ServiceHost _host;     private MyService _server;       public MyWindowsService()     {         InitializeComponent();     }       protected override void OnStart(string[] args)     {         _server = new MyService();         _host = new ServiceHost(_server);         _host.Open();     }       protected override void OnStop()     {         _host.Close();     } } Our Windows service now hosts our WCF service. WCF service will be available when Windows service is started and it is taken down when Windows service stops. Configuring WCF service To make WCF service usable we need to configure it. Add app.config file to your Windows service project and paste the following XML there: <system.serviceModel>   <serviceHostingEnvironment aspNetCompatibilityEnabled="true" />   <services>     <service name="MyWindowsService.MyService" behaviorConfiguration="def">       <host>         <baseAddresses>           <add baseAddress="http://localhost:8732/MyService/"/>         </baseAddresses>       </host>       <endpoint address="" binding="wsHttpBinding" contract="MyWindowsService.IMyService">       </endpoint>       <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>     </service>   </services>   <behaviors>     <serviceBehaviors>       <behavior name="def">         <serviceMetadata httpGetEnabled="True"/>         <serviceDebug includeExceptionDetailInFaults="True"/>       </behavior>     </serviceBehaviors>   </behaviors> </system.serviceModel> Now you are ready to test your service. Install Windows service and start it. Open your browser and open the following address: http://localhost:8732/MyService/ You should see your WCF service page now. Conclusion WCF is not only web applications fun. You can use WCF also as self-hosted service. Windows services that lack good communication possibilities can be saved by using WCF self-hosted service as it is the best way to talk to service. We can also revert the context and say that Windows service is good host for our WCF service.

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  • From the Tips Box: Pre-installation Prep Work Makes Service Pack Upgrades Smoother

    - by Jason Fitzpatrick
    Last month Microsoft rolled out Windows 7 Service Pack 1 and, like many SP releases, quite a few people are hanging back to see what happens. If you want to update but still error on the side of caution, reader Ron Troy  offers a step-by-step guide. Ron’s cautious approach does an excellent job minimizing the number of issues that could crop up in a Service Pack upgrade by doing a thorough job updating your driver sets and clearing out old junk before you roll out the update. Read on to see how he does it: Just wanted to pass on a suggestion for people worried about installing Service Packs.  I came up with a ‘method’ a couple years back that seems to work well. Run Windows / Microsoft Update to get all updates EXCEPT the Service Pack. Use Secunia PSI to find any other updates you need. Use CCleaner or the Windows disk cleanup tools to get rid of all the old garbage out there.  Make sure that you include old system updates. Obviously, back up anything you really care about.  An image backup can be real nice to have if things go wrong. Download the correct SP version from Microsoft.com; do not use Windows / Microsoft Update to get it.  Make sure you have the 64 bit version if that’s what you have installed on your PC. Make sure that EVERYTHING that affects the OS is up to date.  That includes all sorts of drivers, starting with video and audio.  And if you have an Intel chipset, use the Intel Driver Utility to update those drivers.  It’s very quick and easy.  For the video and audio drivers, some can be updated by Intel, some by utilities on the vendor web sites, and some you just have to figure out yourself.  But don’t be lazy here; old drivers and Windows Service Packs are a poor mix. If you have 3rd party software, check to see if they have any updates for you.  They might not say that they are for the Service Pack but you cut your risk of things not working if you do this. Shut off the Antivirus software (especially if 3rd party). Reboot, hitting F8 to get the SafeMode menu.  Choose SafeMode with Networking. Log into the Administrator account to ensure that you have the right to install the SP. Run the SP.  It won’t be very fancy this way.  Maybe 45 minutes later it will reboot and then finish configuring itself, finally letting you log in. Total installation time on most of my PC’s was about 1 hour but that followed hours of preparation on each. On a separate note, I recently got on the Nvidia web site and their utility told me I had a new driver available for my GeForce 8600M GS.  This laptop had come with Vista, now has Win 7 SP1.  I had a big surprise from this driver update; the Windows Experience Score on the graphics side went way up.  Kudo’s to Nvidia for doing a driver update that actually helps day to day usage.  And unlike ATI’s updates (which I need for my AGP based system), this update was fairly quick and very easy.  Also, Nvidia drivers have never, as I can recall, given me BSOD’s, many of which I’ve gotten from ATI (TDR errors).How to Enable Google Chrome’s Secret Gold IconHTG Explains: What’s the Difference Between the Windows 7 HomeGroups and XP-style Networking?Internet Explorer 9 Released: Here’s What You Need To Know

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  • Java : Oracle lance un framework de développement mobile, « ADF Mobile Client » est compatible avec BlackBerry et Windows Mobile

    Java : Oracle lance un framework de développement mobile « ADF Mobile Client » est compatible avec BlackBerry et Windows Mobile Oracle sort une extension de son « Application Development Framework » (ADF) avec un kit de développement qui permettrait de porter les applications d'entreprises écrites en Java à plusieurs plates-formes mobiles. ADF Mobile Client devrait simplifier la création et le déploiement des applications en utilisant un seul et unique framework standardisé d'interface utilisateur pour tous les périphériques supportés, incluant pour l'heure les BlackBerry et Windows Mobile, et ce sans devoir redévelopper ou retoucher les applications. Oracle estime ...

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  • Survey about Umbraco Repositories

    - by Vizioz Limited
    I am currently thinking about developing a hosted repository service for Umbraco Packages, this will allow free, private and commercial repositories to be available within the Umbraco interface for immediate installation.I would be really interested to hear your views and opinions on this sort of service:Please answer this survey!Everyone who answers the survey and leaves their email address will be sent an invitation to beta test the service when it launches in the near future :)

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  • network is not available even when cisco vpn client is connected. wrong route?

    - by javapowered
    I'm using Vodafone 3G modem. I've disabled other network devices in the system (ethernet, wifi, wimax) turned off firewall and antivirus. cisco vpn client connects successfully but I still can not access computer 192.168.147.120 (as well as any other computer from network). Any suggestions are welcome as I don't know what to do. ipconfig /all and route print commands (translated to english): Microsoft Windows [Version 6.1.7601] (C) Microsoft Corporation (Microsoft Corp.), 2009. All rights reserved. C: \ Users \ Oleg> ipconfig / all IP Configuration for Windows The name of the computer. . . . . . . . . : OlegPC The primary DNS-suffix. . . . . . : Node Type. . . . . . . . . . . . . : Hybrid IP-routing is enabled. . . . : No WINS-proxy enabled. . . . . . . : No Ethernet adapter Local Area Connection 4: DNS-suffix for this connection. . . . . : Description. . . . . . . . . . . . . : Cisco Systems VPN Adapter Physical Address. . . . . . . . . 00-05-9A-3C-78-00 DHCP is enabled. . . . . . . . . . . : No Autoconfiguration Enabled. . . . . . : Yes Local IPv6-address channel. . . : Fe80:: c073: 41b2: 852f: eb87% 26 (Preferred) IPv4-address. . . . . . . . . . . . : 10.53.127.204 (Preferred) The subnet mask. . . . . . . . . . : 255.0.0.0 Default Gateway. . . . . . . . . : IAID DHCPv6. . . . . . . . . . . : 536872346 DUID the client DHCPv6. . . . . . . 00-01-00-01-14-6F-4C-8D-60-EB-69-85-10-2D DNS-servers. . . . . . . . . . . : Fec0: 0:0: ffff:: 1% 1 fec0: 0:0: ffff:: 2% 1 fec0: 0:0: ffff:: 3% 1 NetBios over TCP / IP. . . . . . . . : Disabled Adapter mobile broadband connection through a broadband adapter mobile communications: DNS-suffix for this connection. . . . . : Description. . . . . . . . . . . . . : Vodafone Mobile Broadband Network Adapter (Huawei) Physical Address. . . . . . . . . 58-2C-80-13-92-63 DHCP is enabled. . . . . . . . . . . : No Autoconfiguration Enabled. . . . . . : Yes IPv4-address. . . . . . . . . . . . : 10.229.227.77 (Preferred) The subnet mask. . . . . . . . . . : 255.255.255.252 Default Gateway. . . . . . . . . : 10.229.227.78 DNS-servers. . . . . . . . . . . : 163.121.128.134 212.103.160.18 NetBios over TCP / IP. . . . . . . . : Disabled Tunnel adapter isatap. {737FF02E-D473-4F91-840E-2A4DD293FC12}: State of the environment. . . . . . . . : DNS Suffix. DNS-suffix for this connection. . . . . : Description. . . . . . . . . . . . . : Adapter Microsoft ISATAP # 3 Physical Address. . . . . . . . . 00-00-00-00-00-00-00-E0 DHCP is enabled. . . . . . . . . . . : No Autoconfiguration Enabled. . . . . . : Yes Tunnel adapter isatap. {EF585226-5B07-4446-A5A4-CB1B8E4B13AC}: State of the environment. . . . . . . . : DNS Suffix. DNS-suffix for this connection. . . . . : Description. . . . . . . . . . . . . : Adapter Microsoft ISATAP # 4 Physical Address. . . . . . . . . 00-00-00-00-00-00-00-E0 DHCP is enabled. . . . . . . . . . . : No Autoconfiguration Enabled. . . . . . : Yes Tunnel adapter Teredo Tunneling Pseudo-Interface: DNS-suffix for this connection. . . . . : Description. . . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface Physical Address. . . . . . . . . 00-00-00-00-00-00-00-E0 DHCP is enabled. . . . . . . . . . . : No Autoconfiguration Enabled. . . . . . : Yes IPv6-address. . . . . . . . . . . . : 2001:0:4137:9 e76: ea: b77: f51a: 1cb2 (Basically d) Local IPv6-address channel. . . : Fe80:: ea: b77: f51a: 1cb2% 16 (Preferred) Default Gateway. . . . . . . . . ::: NetBios over TCP / IP. . . . . . . . : Disabled C: \ Users \ Oleg> route print ================================================== ========================= List of interfaces 26 ... 00 05 9a 3c 78 00 ...... Cisco Systems VPN Adapter 23 ... 58 2c 80 13 92 63 ...... Vodafone Mobile Broadband Network Adapter (Huawei) 1 ........................... Software Loopback Interface 1 19 ... 00 00 00 00 00 00 00 e0 Adapter Microsoft ISATAP # 3 20 ... 00 00 00 00 00 00 00 e0 Adapter Microsoft ISATAP # 4 16 ... 00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface ================================================== ========================= IPv4 Route Table ================================================== ========================= Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 10.229.227.78 10.229.227.77 296 10.0.0.0 255.0.0.0 On-link 10.53.127.204 286 10.6.93.21 255,255,255,255 10.0.0.1 10.53.127.204 100 10.13.50.12 255,255,255,255 10.0.0.1 10.53.127.204 100 10.53.8.0 255.255.252.0 10.0.0.1 10.53.127.204 100 10.53.127.204 255.255.255.255 On-link 10.53.127.204 286 10.53.128.0 255.255.248.0 10.0.0.1 10.53.127.204 100 10.53.148.0 255,255,255,240 10.0.0.1 10.53.127.204 100 10.53.148.16 255,255,255,240 10.0.0.1 10.53.127.204 100 10.229.227.76 255.255.255.252 On-link 10.229.227.77 296 10.229.227.77 255.255.255.255 On-link 10.229.227.77 296 10.229.227.79 255.255.255.255 On-link 10.229.227.77 296 10.255.255.255 255.255.255.255 On-link 10.53.127.204 286 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 192.168.147.0 255,255,255,240 10.0.0.1 10.53.127.204 100 192.168.147.96 255,255,255,240 10.0.0.1 10.53.127.204 100 192,168,147,112 255,255,255,240 10.0.0.1 10.53.127.204 100 192,168,147,128 255,255,255,240 10.0.0.1 10.53.127.204 100 192,168,147,144 255,255,255,240 10.0.0.1 10.53.127.204 100 192,168,147,224 255,255,255,240 10.0.0.1 10.53.127.204 100 192.168.214.0 255.255.255.0 10.0.0.1 10.53.127.204 100 192.168.215.0 255.255.255.0 10.0.0.1 10.53.127.204 100 194.247.133.19 255,255,255,255 10.0.0.1 10.53.127.204 100 213,247,231,194 255,255,255,255 10.229.227.78 10.229.227.77 100 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 10.229.227.77 296 224.0.0.0 240.0.0.0 On-link 10.53.127.204 286 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 10.229.227.77 296 255.255.255.255 255.255.255.255 On-link 10.53.127.204 286 ================================================== ========================= Persistent Routes: None IPv6 Route Table ================================================== ========================= Active Routes: If Metric Network Destination Gateway 16 58:: / 0 On-link 1306:: 1 / 128 On-link 16 58 2001:: / 32 On-link 16 306 2001: 0:4137:9 e76: ea: b77: f51a: 1cb2/128 On-link 16 306 fe80:: / 64 On-link 26 286 fe80:: / 64 On-link 16 306 fe80:: ea: b77: f51a: 1cb2/128 On-link 26 286 fe80:: c073: 41b2: 852f: eb87/128 On-link 1306 ff00:: / 8 On-link 16 306 ff00:: / 8 On-link 26 286 ff00:: / 8 On-link ================================================== ========================= Persistent Routes: None C: \ Users \ Oleg>

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  • CMS et interopérabilité, nouvelles priorités de la fondation Apache, « Chemistry » intègre API et librairies pour Java, Python, DotNET et PHP

    CMS et interopérabilité, nouvelles priorités de la fondation Apache « Chemistry » intègre API et librairies pour Java, Python, DotNET et PHP La fondation Apache vient de mettre le projet Chemistry en tête de ses priorités. Chemistry est une implémentation open-source de la spécification CMIS (Content Management Interoperability Services) destinée à harmoniser l'interopérabilité entre les différents systèmes de gestion de contenu d'entreprise (EMS). Le standard CMIS, initié et géré par le consortium OASIS offre un ensemble de « binding » facilitant l'accès entre plusieurs systèmes compatibles CMIS, et sans devoir cerner l'interface spécifique de chacun d'entre eux (g...

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  • Observations in Migrating from JavaFX Script to JavaFX 2.0

    - by user12608080
    Observations in Migrating from JavaFX Script to JavaFX 2.0 Introduction Having been available for a few years now, there is a decent body of work written for JavaFX using the JavaFX Script language. With the general availability announcement of JavaFX 2.0 Beta, the natural question arises about converting the legacy code over to the new JavaFX 2.0 platform. This article reflects on some of the observations encountered while porting source code over from JavaFX Script to the new JavaFX API paradigm. The Application The program chosen for migration is an implementation of the Sudoku game and serves as a reference application for the book JavaFX – Developing Rich Internet Applications. The design of the program can be divided into two major components: (1) A user interface (ideally suited for JavaFX design) and (2) the puzzle generator. For the context of this article, our primary interest lies in the user interface. The puzzle generator code was lifted from a sourceforge.net project and is written entirely in Java. Regardless which version of the UI we choose (JavaFX Script vs. JavaFX 2.0), no code changes were required for the puzzle generator code. The original user interface for the JavaFX Sudoku application was written exclusively in JavaFX Script, and as such is a suitable candidate to convert over to the new JavaFX 2.0 model. However, a few notable points are worth mentioning about this program. First off, it was written in the JavaFX 1.1 timeframe, where certain capabilities of the JavaFX framework were as of yet unavailable. Citing two examples, this program creates many of its own UI controls from scratch because the built-in controls were yet to be introduced. In addition, layout of graphical nodes is done in a very manual manner, again because much of the automatic layout capabilities were in flux at the time. It is worth considering that this program was written at a time when most of us were just coming up to speed on this technology. One would think that having the opportunity to recreate this application anew, it would look a lot different from the current version. Comparing the Size of the Source Code An attempt was made to convert each of the original UI JavaFX Script source files (suffixed with .fx) over to a Java counterpart. Due to language feature differences, there are a small number of source files which only exist in one version or the other. The table below summarizes the size of each of the source files. JavaFX Script source file Number of Lines Number of Character JavaFX 2.0 Java source file Number of Lines Number of Characters ArrowKey.java 6 72 Board.fx 221 6831 Board.java 205 6508 BoardNode.fx 446 16054 BoardNode.java 723 29356 ChooseNumberNode.fx 168 5267 ChooseNumberNode.java 302 10235 CloseButtonNode.fx 115 3408 CloseButton.java 99 2883 ParentWithKeyTraversal.java 111 3276 FunctionPtr.java 6 80 Globals.java 20 554 Grouping.fx 8 140 HowToPlayNode.fx 121 3632 HowToPlayNode.java 136 4849 IconButtonNode.fx 196 5748 IconButtonNode.java 183 5865 Main.fx 98 3466 Main.java 64 2118 SliderNode.fx 288 10349 SliderNode.java 350 13048 Space.fx 78 1696 Space.java 106 2095 SpaceNode.fx 227 6703 SpaceNode.java 220 6861 TraversalHelper.fx 111 3095 Total 2,077 79,127 2531 87,800 A few notes about this table are in order: The number of lines in each file was determined by running the Unix ‘wc –l’ command over each file. The number of characters in each file was determined by running the Unix ‘ls –l’ command over each file. The examination of the code could certainly be much more rigorous. No standard formatting was performed on these files.  All comments however were deleted. There was a certain expectation that the new Java version would require more lines of code than the original JavaFX script version. As evidenced by a count of the total number of lines, the Java version has about 22% more lines than its FX Script counterpart. Furthermore, there was an additional expectation that the Java version would be more verbose in terms of the total number of characters.  In fact the preceding data shows that on average the Java source files contain fewer characters per line than the FX files.  But that's not the whole story.  Upon further examination, the FX Script source files had a disproportionate number of blank characters.  Why?  Because of the nature of how one develops JavaFX Script code.  The object literal dominates FX Script code.  Its not uncommon to see object literals indented halfway across the page, consuming lots of meaningless space characters. RAM consumption Not the most scientific analysis, memory usage for the application was examined on a Windows Vista system by running the Windows Task Manager and viewing how much memory was being consumed by the Sudoku version in question. Roughly speaking, the FX script version, after startup, had a RAM footprint of about 90MB and remained pretty much the same size. The Java version started out at about 55MB and maintained that size throughout its execution. What About Binding? Arguably, the most striking observation about the conversion from JavaFX Script to JavaFX 2.0 concerned the need for data synchronization, or lack thereof. In JavaFX Script, the primary means to synchronize data is via the bind expression (using the “bind” keyword), and perhaps to a lesser extent it’s “on replace” cousin. The bind keyword does not exist in Java, so for JavaFX 2.0 a Data Binding API has been introduced as a replacement. To give a feel for the difference between the two versions of the Sudoku program, the table that follows indicates how many binds were required for each source file. For JavaFX Script files, this was ascertained by simply counting the number of occurrences of the bind keyword. As can be seen, binding had been used frequently in the JavaFX Script version (and does not take into consideration an additional half dozen or so “on replace” triggers). The JavaFX 2.0 program achieves the same functionality as the original JavaFX Script version, yet the equivalent of binding was only needed twice throughout the Java version of the source code. JavaFX Script source file Number of Binds JavaFX Next Java source file Number of “Binds” ArrowKey.java 0 Board.fx 1 Board.java 0 BoardNode.fx 7 BoardNode.java 0 ChooseNumberNode.fx 11 ChooseNumberNode.java 0 CloseButtonNode.fx 6 CloseButton.java 0 CustomNodeWithKeyTraversal.java 0 FunctionPtr.java 0 Globals.java 0 Grouping.fx 0 HowToPlayNode.fx 7 HowToPlayNode.java 0 IconButtonNode.fx 9 IconButtonNode.java 0 Main.fx 1 Main.java 0 Main_Mobile.fx 1 SliderNode.fx 6 SliderNode.java 1 Space.fx 0 Space.java 0 SpaceNode.fx 9 SpaceNode.java 1 TraversalHelper.fx 0 Total 58 2 Conclusions As the JavaFX 2.0 technology is so new, and experience with the platform is the same, it is possible and indeed probable that some of the observations noted in the preceding article may not apply across other attempts at migrating applications. That being said, this first experience indicates that the migrated Java code will likely be larger, though not extensively so, than the original Java FX Script source. Furthermore, although very important, it appears that the requirements for data synchronization via binding, may be significantly less with the new platform.

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  • Dependently typed language best suited to “real world” programming?

    - by Kim
    Which dependently typed programming languages could be used for real world application development? I will mostly be writing toy applications at first, after that maybe web development or a simple DBMS. These are some points, that I think are important: documentation example programs a good/big standard library an easy to use foreign function interface a community of people using the language for real world tasks tool support

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  • Microsoft contraint d'abandonner le nom « SkyDrive », suite à une décision de justice en faveur de BSkyB

    Microsoft contraint d'abandonner le nom « SkyDrive » Suite à une décision de justice en faveur de BSkyBMicrosoft va devoir changer le nom « SkyDrive », utilisé par sa plateforme de stockage de fichiers dans le Cloud.Le même scénario qu'avec l'appellation « Metro », qu'a dû abandonner le géant du logiciel pour l'interface utilisateur de Windows 8, se produit.Le 28 juin dernier, une décision de justice statuait que Microsoft portait atteinte aux droits du groupe audiovisuel anglais BSkyB sur la marque « Sky ». Le groupe BSkyB est propriétaire de plusieurs chaines de télévision portant le pr...

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  • Oracle Utilities Application Framework future feature deprecation

    - by Paula Speranza-Hadley
    From time to time, existing functionality is replaced with alternative features to offer greater flexibility and standardization. In Oracle Utilities Application Framework V4.2.0.0.0 the following features are being announced for deprecation in the next release or have been previously announced and are not being delivered with this version of the Oracle Utilities Application Framework: ·         No SQL Server Support – Oracle Utilities Application Framework V4.2.0.0.0 or above does not ship with any support for SQL Server. ·         No MPL Support – Oracle Utilities Application Framework V4.2.0.0.0 or above does not ship with the Multi-Purpose Listener (MPL) component of the XML Application Integration (XAI) component. Customers using the MPL should migrate to Oracle Service Bus. ·         No provided Crystal Reports/Business Objects Interface – Oracle Utilities Application Framework V4.2.0.0.0 or above does not ship with a supported Crystal Reports/Business Objects Interface. This facility is now available as downloadable customization for existing or new customers. Responsibility for maintenance and new features is now individual customer's responsibility. ·         XAI Servlet deprecation – The XAI Servlet (xaiserver and classicxai) will be removed in the next release of the Oracle Utilities Application Framework. Customers are encouraged to migrate to the native Web Services Support as outlined in XAI Best Practices whitepaper available from My Oracle Support (Doc Id: 942074.1). ·         ConfigLab deprecation – The ConfigLab facility will be removed in the next release of Oracle Utilities Application Framework for products it is shipped with. Customers are recommended to migrate to the Configuration Migration Assistant which provides the same and more functionality.   ·         Archiving deprecation – The inbuilt Archiving has been removed from Oracle Utilities Application Framework V4.2.0.0.0 or above, for products it is shipped with. Customers considering Archiving solution should migrate to the Information Lifecycle Management based solution provided for your product. ·         DISTRIBUTED batch execution mode deprecation – The DISTRIBUTED execution mode used by the batch component of the Oracle Utilities Application Framework will be deprecated in the next release of the Oracle Utilities Application Framework. Customers using DISTRUBUTED mode should migrate to CLUSTERED mode as outlined in the Batch Best Practices For Oracle Utilities Application Framework Based Products whitepaper available from My Oracle Support (Doc Id: 836362.1). ·         XAI Schema Editor deprecation – The XAI Schema Editor which is a component of the Oracle Utilities Software Development Kit will be removed in the next release of the Oracle Utilities Application Framework. Customers should migrate their existing schemas to Business Object based schemas and use the browser based Schema Editor instead.  

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  • Visual Database Design Application

    - by tshauck
    Hi, I'm getting to the point where the applications I write need a little more structure during the planning phase. So I'd like to use some sort of visual tool to design the tables and relationships. I'm on a mac and have tried mysql workbench, but I find it buggy and a bit bloated for my intended use. Is something that I could design in that has a nice interface and is primarily a tool for visual design? Thanks

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  • Télécharger un fichier du Web avec PyQt4 et QThread, un article de Jean-Paul Vidal

    Bonjour, Je vous informe d'un nouveau tuto sur developpez : comment télécharger un fichier sur le Web avec PyQt4. Le code utilise QThread (le thread de Qt4) et, pour le téléchargement, le module urllib. Il permet de montrer comment les threads peuvent communiquer par messages avec l'interface graphique afin de mettre à jour une barre de progression du téléchargement. Il a été développé suite au fil de discussion http://www.developpez.net/forums/d10...s-urlretrieve/. Tyrtamos...

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  • Speaker at the German Visual FoxPro Developer Conference 2004

    The following is an excerpt from the UniversalThread conference coverage of the German Visual FoxPro Developer Conference 2004 written by Hans-Otto Lochmann, Armin Neudert and myself. TRACK Active FoxPro Pages Back in 1996 Peter Herzog invented a FoxPro based solution to provide intranet capabilities for one of his customers. Nearly at the same time Rick Strahl had the same task and created WestWind Web Connection (WWWC). The aspect that developers have to have a full Visual FoxPro development environment to create WWWC solutions was the starting point of a "personal sportive competition" of Peter to write his own solution. But the main aspect has to be that it doesn't rely on a full VFP version in order to run. The VFP runtime should enough and the source code has to be compiled and interpreted on the fly. So, as Microsoft released Active Server Pages a name for Peter's solution was found: Active FoxPro Pages (AFP). During the years many drawbacks, design aspects as well as technological hassles forced ProLib Software to refactor the product. This way many limits like DCOM configuration, file-based information transfer between Web server and AFP, missing features (like upload forms or other Web servers than IIS) and extensibility were eliminated. As a consequence ProLib Software decided to rewrite Active FoxPro Pages in mid of 2002 completely. Christof Wollenhaupt, before his marriage known as Christof Lange, and Jochen Kirstätter had to solve this task. AFP 3.0 was officially released at German Devcon in November 2002. Today AFP has six distributors world-wide and there is a lot more information available online than before version 3.0. Directly after a short welcome speech by Rainer Becker, Jochen Kirstätter - aka JoKi - opened today's AFP track and introduced the basic concepts how Active FoxPro Pages works in general, explained the AFP terminilogy and every single component, and presented a small Walk-Through about how to write an AFP-based Web solution. Actually his presentation slides themselves were an AFP Web application. This way it was easy to integrate accompanying AFP samples on the fly. Additionally it was shown that no Visual FoxPro development environment is needed to create a Web application. A simple text editor like NotePad or any WYSIWYG editor on the market is usable to fullfil customer's requirements.Welcome at least two new speakers - Nina Schwanzer and Bernhard Reiter. Both are working at ProLib Software and this year's conference is their first time as speakers. And they did their job very well. The whole session was kind of a "ping pong" game and those two complemented each other to keep the audience in tension. First, they described typical requirements a modern desktop application should fullfil - online registration and activation, auto-update capabilities, or even frontend to administer a Web application on a remote system via internet, and explained how possible solutions like Web Services (using the SOAP interface), DCOM, and even .NET might solve those requirements. But any of those ways has different drawbacks like complicated installation or configuration, or extraordinary download sizes. Next, they introduced a technology they developed and used in a customer's project: Active FoxPro Pages Remote Procedure Call (AFP RPC). [...]   In the next session JoKi described how to extend Active FoxPro Pages. On the one hand AFP provides a plugin interface, and on the other hand any addon for Visual FoxPro might be usable as well. During the first half he spoke about the plugin interface and wrote live a new AFP extension - the Devcon plugin. Later he questioned any former step and showed that a single AFP document may solve the problem as well. So, developing extensions is only interesting if they are re-usable and generic. At the end he talked about multiple interfaces for the same business logic. For instance plain VFP class, COM server and .NET integration. Currently there are several specialized AFP extensions for sending mail, for using cryptographic routines (ie. based on .NET classes), or enhanced methods to handle HTML/XML strings.Rainer Becker and Peter Herzog introduced a new development for Visual Extend (VFX) - an AFP form builder. With this builder creating an AFP Web form designed with Visual FoxPro's form designer was a matter of seconds. The builder itself is currently in pre-release status and will be part of the VFX framework in the future. It was very impressive to see that the whole design of a form as well as most parts of its functionality were exported to a combination of HTML, JavaScript and Active FoxPro Pages. At half-time Jürgen "wOOdy" Wondzinski and JoKi changed places with Rainer and Peter, and presented some Web solutions in AFP. [...] Visual FoxPro 9.0 und Linux Is Linux still a topic for Visual FoxPro developers based on the activities during this year? In his session Jochen Kirstätter - aka JoKi - went not through the technical steps and requirements on how to setup and run FoxPro on a Linux client. Instead, he explained what Linux actually is, and talked about the high variety of distributions. In fact there are a lot of distributions around but since some several years there are some specialized ones available: Live Distributions (aka LiveCDs).The intension of LiveCDs is to run a full-featured Linux operating system on any personal computer directly from a bootable medium, like CD, DVD, or even USB memory stick, without installation on a hard disk. One of the first Linux LiveCDs was made by Klaus Knopper and is well-known as Knoppix. Today, many other LiveCDs are based on the concepts of Knoppix. During the session Jochen booted Morphix, a very light-weighted LiveCD, on his notebook, and actually showed the attendees that testing and playing around with Linux is absolutely easy. Running a text processing application swept away most of the contrary aspects the audience had. Okay, where is the part about FoxPro? Well, there are several scenarios a customer might require usage of Linux, and actually with all of them FoxPro could deal with. I guess that one of the more common ones is the situation that a customer has a heterogeneous intranet with Windows clients and Linux servers, i.e. Windows XP Professional and any Linux distribution on their servers. Even in this scenario there are two variants hidden! Why? Well, on the one hand there is a software package called Samba, that provides Windows server capabilities to a Linux system, and on the other hand there are several SQL servers for Linux, like PostgreSQL, DB2 and MySQL. Either way, FoxPro is able to deal with these scenarios, but you as developer have to know what you are talking about with your customers. And even if there's no Windows operating system, you are able to provide a FoxPro-based solution. Using the wine library - wine stands for Wine Is Not an Emulator - you are able to run your VFP applications on Linux clients, too; but not without reading VFP's EULA. Licenses were also part the session, and Jochen discussed the meaning of Open Source and its misunderstanding throughout most developers. Open Source does not mean that it's without a fee. Instead, it stands for access to the source code of an application or tool. And, VFP itself is one of the best samples to explain Open Source due to fact that since years, VFP is shipped with the xSource.zip archive. [...]

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  • MIX 2010 Covert Operations Day 2 Silverlight + Windows 7 Phone

    - by GeekAgilistMercenary
    Left the Circus Circus and headed to the geek circus at Mandalay Bay.  Got in, got some breakfast, met a few more people and headed to the keynote. Upon arriving the crew I was hanging with at the event; Erik Mork, Beth Murray, and Brian Henderson and I were entertained with several other thousand geeks by the wicked yo-yoing. The first video demo of something was of Bing Maps and various aspects of Microsoft Research integrated together.  Namely the pictures, put in place, on real 3d element maps of various environments. Silverlight Scott Guthrie, as one would guess, kicked off the keynote.  His first point was that user experience has become a priority at Microsoft.  This can be seen by any observant soul with the release and push of Expression, Silverlight, and the other tools.  This is even more apparent when one takes note of Microsoft bringing in people that can actually do good design and putting them at the forefront. The next thing Scott brought up was a few key points about Silverlight.  Currently Silverlight is a little over 2 years old and has achieved a pretty solid 60% penetration.  Silverlight has all sorts of capabilities that have been developed and are now provided as open source including;  ad injection, smoothing, playback editing, and more.  Another thing he showed, which really struck me as awesome being in the analytics space, was the Olympics and a quick glimpse of the ad statistics, viewer experience, video playback performance, audience trends, and overall viewer participation.  All of it rendered in Silverlight in beautiful detail. The key piece of Scott's various points were all punctuated with the fact that all of this code is available as open source.  Not only is Microsoft really delving into this design element of things, they're getting involved in the right ways. One of the last points I'll bring up about Silverlight 4 is the ability to have HD video on a monitor, and an entirely different activity being done on the other monitor, effectively making Silverlight the only RIA framework that supports multi-monitor support.  Overall, Silverlight is continuing to impress – providing superior capabilities tit-for-tat with the competition. Windows 7 Phone The Windows 7 Phone has 3 primary buttons (yes, more than the iPhone, don't let your mind explode!!).  Start, Search, and Back control all of the needed functionality of the phone.  At the same time, of course, there is the multi-touch, touch, and other interactive abilities of the interface.  The intent, once start is pressed is to have all the information that a phone owner wants displayed immediately.  Avoiding the scrolling through pages of apps or rolling a ball to get through multitudes of other non-interactive phone interfaces.  The Windows 7 Phone simply has the data right in front of you, basically a phone dashboard.  From there it is easy to dive into the interactive areas of the phone. Each area of the interface of the phone is broken into hubs.  These hubs include applications, data, and other things based on a relative basis.  This basis being determined by the user.  These applications interact on many other levels, and form a kind of relationship between each other adding more and more meta-data to the phone user, their interactions between the applications, and of course the social element of their interactions on the phone.  This makes this phone a practical must have for a marketer involved in social media.  The level of wired together interaction is massive, and of course, if you've seen Office Outlook 2010 you know that the power that is pulled into the phone by being tied to Outlook is massive. Joe Belfiore also showed several UI & specifically UX elements of the phone interface that allows paging to be instinctual by simple clipped items, flipping page to page, and other excellent user experience advances for phone devices.  Belfiore's also showed how his people hub had a massive list of people, with pictures, all from various different social networks and other associated relations.  The rendering, speed, and viewing of these people's, their pictures, their social network information, and other characteristics was smooth and in some situations unbelievably rendered.  This demo showed some of the great power of the beta phone, which isn't even as powerful as the planned end device. Joe finished up by jumping into the music, videos, and other media with the Zune Component of the Windows 7 Mobile Phone.  This was all good stuff, but I'll get to what really sold me on the media element in a moment. When Joe was done, Scott Guthrie stepped back up to walk through building a Windows 7 Mobile Phone.  This is were I have to give serious props.  He built this application, in Visual Studio 2010, in front of 2000+ people.  That was cool, but what really was amazing that he build the application in about 2 minutes.  The IDE, side by side design that is standard in Visual Studio is light years ahead of x-Code or any of the iPhone IDEs.  The Windows 7 Mobile System, if it can get market penetration, poses a technologically superior development and phone platform over anything on the market right now.  The biggest problem with the phone, is it just isn't available yet.  I personally can't wait for a chance to build some apps for the new Windows Phone. Netflix, I May Start Up an Account Again! When I get my Windows 7 Phone device, I am absolutely getting a Netflix account again.  The Vertigo crew, as I wrote on Twitter "#MIX10 Props @seesharp on @netflix demo", displayed an application on the phone for Netflix that actually ran HD Video of Rescue Me (with Dennis Leary).  The video played back smooth as it would on a dedicated computer, I was instantly sold.  So this didn't actually sell me on the phone, because I'm already sold, but it did sell me whole heartedly on the media capabilities of the pending phone. Anyway, I try not to do this but I may double post today.  Lunch is over and I'm off to another session very near and dear to the heart of my occupation, Analytics Tracking.  Stay tuned and I should have that post up by the end of the day. Original Post – Check out my other blog for even more technical ramblings and reads.

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  • Phoenix Silverlight UserGroup Meeting Wednesday April 7, 2010

    - by Dave Campbell
    The next regularly-scheduled meeting of the Phoenix Silverlight User Group is Wednesday April 7. We meet at Interface Technical Training at roughly Central and Thomas in downtown Phoenix beginning with pizza and socializing at 6PM meeting after and running until 8PM. This month Joel Neubeck will be presenting on Windows Phone 7 development, and yes -- had you heard that they dropped the word 'Series' from the end?? Get another great presentation from someone actually using Silverlight during the day. I'll see you at 6PM on Wednesday!

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  • FFmpeg Video Hosting for Linux and Windows Server

    - by Aditi
    FFmpeg hosting is a special type of web hosting where the host servers have video transcoding software loaded on them, which allows the automatic conversion of videos from one format to another. FFmpeg is a cross-platform solution for recording, converting, transcoding and stream audio and video. It includes libavcodec – the leading audio/video codec library. FFmpeg hosting gets its name from a set of server side programs (modules) called FFmpeg. There are a number of applications or web scripts available, which allow webmasters to create their own video sharing websites. Video hosting typically requires: PHP 4.3 and above (including support of CLI) Mencoder and also Mplayer FFMpeg-PHP MySQL database server LAME MP3 Encoder Libogg + Libvorbis GD Library 2 or higher CGI-BIN There are number of web service providers who provide FFmpeg hosting service. Following is a list of some of the Best FFmpeg hosting providers for both Linux and Windows Server below. Dream Host Dreamhost provides for web based email access, mail filtering, spam filtering, unlimited email ids, vacation autoresponder, python support, full CGI access and many more services. Price: $7.95 View Details Micfo It offers unlimited disk space and bandwidth. Other services include free domain for life and free Website Transfer with many more services. All in all one of the best option to consider. Price: $5 View Details Host Upon HostUpon offers FFMpeg Hosting on all their hosting packages, with readily installed modules to start a Video website or Social Network with Video uploading. These scripts such as Boonex Dolphin / PHPMotion / Social Engine / ABKsoft Scripts / Joomla Video Plugin / Clipshare / ClipBucket / Social Media / Rayzz / Vidi Script work with their ffmpeg. Their FFMPEG hosting plan offers 24/7/365 support with typical response time of 15min or less. Price: $5.95 View Details DownTown Host DownTown Host provides full and exceptional support by live chat and telephone. It has high-power, modern servers and the finest web server technology. It offers free search engine Submission and continuous data backup protection with free email forwarding and site move. There are many more services too. Site5 This ffmpeg service provider offers uptime guarantee, a real time stats on each server and many more attractive services. Price: $4.95 View Details Cirtex Hosting Cirtex Hosting allows to host 7 websites & domains and provides for unlimited storage space and monthly bandwidth. It also offers FTP and email accounts and many more services. Price: $2.49 View Details FLV Hosting FLV hosting supplies RTMP SERVER STREAMING for large size video streaming and server side recording. It is flexible and costs less. They customize to the clients requirements. Price: $9.95 View Details AptHost This hosting service provides for 24x7x365 Premium Support and fully ffmpeg enabled services. Price: $4.95 View Details HostMDS Great Support, Priced Low. It provides for SSH access, CGI, Ruby on Rails, Perl, PHP, MySQL, front page extentions, 24/7 Support, FREE Domain transfer and spam filtering. It offers instant account setup, low latency fast bandwidth & much more! They were formerly known as Vistapages. Price: $4.95 View Details Related posts:Best WordPress Video Themes for a Video Blog Free Web Based Applications 24+ Coda Alternatives for Windows and Linux

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  • Feature (de)activation error “The web or site was not found” and Application Pool

    - by panjkov
    I am using Microsoft IW Demo VM (2010-10A) for my experiments related to SharePoint, in all cases when I don’t have time (read: when I’m lazy) to create complete SharePoint Dev environment. Problem This particular time I was playing around with site-scoped features and newly created site collection. So here is my workflow: Create feature with feature receiver Deploy to Site Collection from Visual Studio using “No Activation” deployment profile Activate feature from “Site Collection Features” interface...(read more)

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  • Virtual Brown Bag: Ruby Newbies, Mockups, There *is* an I in SOLID, fuv

    - by Brian Schroer
    At this week's Virtual Brown Bag meeting: Claudio pointed us to Try Ruby! and Rails For Zombies, two sites to educate Ruby newbies We looked at the free version of Balsamiq, and other online mockup sites George walked us through a refactoring to isolate roles and adhere to the Interface Segregation Principle (the "I" in SOLID) We laughed at fuv, the code editor for "real programmers" For detailed notes, links, and the video recording, go to the VBB wiki page: https://sites.google.com/site/vbbwiki/main_page/2011-02-10

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  • How to handle "circular dependency" in dependency injection

    - by Roel
    The title says "Circular Dependency", but it is not the correct wording, because to me the design seems solid. However, consider the following scenario, where the blue parts are given from external partner, and orange is my own implementation. Also assume there is more then one ConcreteMain, but I want to use a specific one. (In reality, each class has some more dependencies, but I tried to simplify it here) I would like to instanciate all of this with Depency Injection (Unity), but I obviously get a StackOverflowException on the following code, because Runner tries to instantiate ConcreteMain, and ConcreteMain needs a Runner. IUnityContainer ioc = new UnityContainer(); ioc.RegisterType<IMain, ConcreteMain>() .RegisterType<IMainCallback, Runner>(); var runner = ioc.Resolve<Runner>(); How can I avouid this? Is there any way to structure this so that I can use it with DI? The scenario I'm doing now is setting everything up manually, but that puts a hard dependency on ConcreteMain in the class which instantiates it. This is what i'm trying to avoid (with Unity registrations in configuration). All source code below (very simplified example!); public class Program { public static void Main(string[] args) { IUnityContainer ioc = new UnityContainer(); ioc.RegisterType<IMain, ConcreteMain>() .RegisterType<IMainCallback, Runner>(); var runner = ioc.Resolve<Runner>(); Console.WriteLine("invoking runner..."); runner.DoSomethingAwesome(); Console.ReadLine(); } } public class Runner : IMainCallback { private readonly IMain mainServer; public Runner(IMain mainServer) { this.mainServer = mainServer; } public void DoSomethingAwesome() { Console.WriteLine("trying to do something awesome"); mainServer.DoSomething(); } public void SomethingIsDone(object something) { Console.WriteLine("hey look, something is finally done."); } } public interface IMain { void DoSomething(); } public interface IMainCallback { void SomethingIsDone(object something); } public abstract class AbstractMain : IMain { protected readonly IMainCallback callback; protected AbstractMain(IMainCallback callback) { this.callback = callback; } public abstract void DoSomething(); } public class ConcreteMain : AbstractMain { public ConcreteMain(IMainCallback callback) : base(callback){} public override void DoSomething() { Console.WriteLine("starting to do something..."); var task = Task.Factory.StartNew(() =>{ Thread.Sleep(5000);/*very long running task*/ }); task.ContinueWith(t => callback.SomethingIsDone(true)); } }

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  • What have my fellow Delphi programmers done to make Eclipse/Java more like Delphi?

    - by Robert Oschler
    I am a veteran Delphi programmer working on my first real Android app. I am using Eclipse and Java as my development environment. The thing I miss the most of course is Delphi's VCL components and the associated IDE tools for design-time editing and code creation. Fortunately I am finding Eclipse to be one hell of an IDE with it's lush context sensitive help, deep auto-complete and code wizard facilities, and other niceties. This is a huge double treat since it is free. However, here is an example of something in the Eclipse/Java environment that will give a Delphi programmer pause. I will use the simple case of adding an "on-click" code stub for an OK button. DELPHI Drop button on a form Double-click button on form and fill in the code that will fire when the button is clicked ECLIPSE Drop button on layout in the graphical XML file editor Add the View.OnClickListener interface to the containing class's "implements" list if not there already. (Command+1 on Macs, Ctrl + 1 on PCs I believe). Use Eclipse to automatically add the code stub for unimplemented methods needed to support the View.OnClickListener interface, thus creating the event handler function stub. Find the stub and fill it in. However, if you have more than one possible click event source then you will need to inspect the View parameter to see which View element triggered the OnClick() event, thus requiring a case statement to handle multiple click event sources. NOTE: I am relatively new to Eclipse/Java so if there is a much easier way of doing this please let me know. Now that work flow isn't all that terrible, but again, that's just the simplest of use cases. Ratchet up the amount of extra work and thinking for a more complex component (aka widget) and the large number of properties/events it might have. It won't be long before you miss dearly the Delphi intelligent property editor and other designers. Eclipse tries to cover this ground by having an extensive list of properties in the menu that pops up when you right-click over a component/widget in the XML graphical layout editor. That's a huge and welcome assist but it's just not even close to the convenience of the Delphi IDE. Let me be very clear. I absolutely am not ranting nor do I want to start a Delphi vs. Java ideology discussion. Android/Eclipse/Java is what it is and there is a lot that impresses me. What I want to know is what other Delphi programmers that made the switch to the Eclipse/Java IDE have done to make things more Delphi like, and not just to make component/widget event code creation easier but any programming task. For example: Clever tips/tricks Eclipse plugins you found other ideas? Any great blog posts or web resources on the topic are appreciated too. -- roschler

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  • General monitoring for SQL Server Analysis Services using Performance Monitor

    - by Testas
    A recent customer engagement required a setup of a monitoring solution for SSAS, due to the time restrictions placed upon this, native Windows Performance Monitor (Perfmon) and SQL Server Profiler Monitoring Tools was used as using a third party tool would have meant the customer providing an additional monitoring server that was not available.I wanted to outline the performance monitoring counters that was used to monitor the system on which SSAS was running. Due to the slow query performance that was occurring during certain scenarios, perfmon was used to establish if any pressure was being placed on the Disk, CPU or Memory subsystem when concurrent connections access the same query, and Profiler to pinpoint how the query was being managed within SSAS, profiler I will leave for another blogThis guide is not designed to provide a definitive list of what should be used when monitoring SSAS, different situations may require the addition or removal of counters as presented by the situation. However I hope that it serves as a good basis for starting your monitoring of SSAS. I would also like to acknowledge Chris Webb’s awesome chapters from “Expert Cube Development” that also helped shape my monitoring strategy:http://cwebbbi.spaces.live.com/blog/cns!7B84B0F2C239489A!6657.entrySimulating ConnectionsTo simulate the additional connections to the SSAS server whilst monitoring, I used ascmd to simulate multiple connections to the typical and worse performing queries that were identified by the customer. A similar sript can be downloaded from codeplex at http://www.codeplex.com/SQLSrvAnalysisSrvcs.     File name: ASCMD_StressTestingScripts.zip. Performance MonitorWithin performance monitor,  a counter log was created that contained the list of counters below. The important point to note when running the counter log is that the RUN AS property within the counter log properties should be changed to an account that has rights to the SSAS instance when monitoring MSAS counters. Failure to do so means that the counter log runs under the system account, no errors or warning are given while running the counter log, and it is not until you need to view the MSAS counters that they will not be displayed if run under the default account that has no right to SSAS. If your connection simulation takes hours, this could prove quite frustrating if not done beforehand JThe counters used……  Object Counter Instance Justification System Processor Queue legnth N/A Indicates how many threads are waiting for execution against the processor. If this counter is consistently higher than around 5 when processor utilization approaches 100%, then this is a good indication that there is more work (active threads) available (ready for execution) than the machine's processors are able to handle. System Context Switches/sec N/A Measures how frequently the processor has to switch from user- to kernel-mode to handle a request from a thread running in user mode. The heavier the workload running on your machine, the higher this counter will generally be, but over long term the value of this counter should remain fairly constant. If this counter suddenly starts increasing however, it may be an indicating of a malfunctioning device, especially if the Processor\Interrupts/sec\(_Total) counter on your machine shows a similar unexplained increase Process % Processor Time sqlservr Definately should be used if Processor\% Processor Time\(_Total) is maxing at 100% to assess the effect of the SQL Server process on the processor Process % Processor Time msmdsrv Definately should be used if Processor\% Processor Time\(_Total) is maxing at 100% to assess the effect of the SQL Server process on the processor Process Working Set sqlservr If the Memory\Available bytes counter is decreaing this counter can be run to indicate if the process is consuming larger and larger amounts of RAM. Process(instance)\Working Set measures the size of the working set for each process, which indicates the number of allocated pages the process can address without generating a page fault. Process Working Set msmdsrv If the Memory\Available bytes counter is decreaing this counter can be run to indicate if the process is consuming larger and larger amounts of RAM. Process(instance)\Working Set measures the size of the working set for each process, which indicates the number of allocated pages the process can address without generating a page fault. Processor % Processor Time _Total and individual cores measures the total utilization of your processor by all running processes. If multi-proc then be mindful only an average is provided Processor % Privileged Time _Total To see how the OS is handling basic IO requests. If kernel mode utilization is high, your machine is likely underpowered as it's too busy handling basic OS housekeeping functions to be able to effectively run other applications. Processor % User Time _Total To see how the applications is interacting from a processor perspective, a high percentage utilisation determine that the server is dealing with too many apps and may require increasing thje hardware or scaling out Processor Interrupts/sec _Total  The average rate, in incidents per second, at which the processor received and serviced hardware interrupts. Shoulr be consistant over time but a sudden unexplained increase could indicate a device malfunction which can be confirmed using the System\Context Switches/sec counter Memory Pages/sec N/A Indicates the rate at which pages are read from or written to disk to resolve hard page faults. This counter is a primary indicator of the kinds of faults that cause system-wide delays, this is the primary counter to watch for indication of possible insufficient RAM to meet your server's needs. A good idea here is to configure a perfmon alert that triggers when the number of pages per second exceeds 50 per paging disk on your system. May also want to see the configuration of the page file on the Server Memory Available Mbytes N/A is the amount of physical memory, in bytes, available to processes running on the computer. if this counter is greater than 10% of the actual RAM in your machine then you probably have more than enough RAM. monitor it regularly to see if any downward trend develops, and set an alert to trigger if it drops below 2% of the installed RAM. Physical Disk Disk Transfers/sec for each physical disk If it goes above 10 disk I/Os per second then you've got poor response time for your disk. Physical Disk Idle Time _total If Disk Transfers/sec is above  25 disk I/Os per second use this counter. which measures the percent time that your hard disk is idle during the measurement interval, and if you see this counter fall below 20% then you've likely got read/write requests queuing up for your disk which is unable to service these requests in a timely fashion. Physical Disk Disk queue legnth For the OLAP and SQL physical disk A value that is consistently less than 2 means that the disk system is handling the IO requests against the physical disk Network Interface Bytes Total/sec For the NIC Should be monitored over a period of time to see if there is anb increase/decrease in network utilisation Network Interface Current Bandwidth For the NIC is an estimate of the current bandwidth of the network interface in bits per second (BPS). MSAS 2005: Memory Memory Limit High KB N/A Shows (as a percentage) the high memory limit configured for SSAS in C:\Program Files\Microsoft SQL Server\MSAS10.MSSQLSERVER\OLAP\Config\msmdsrv.ini MSAS 2005: Memory Memory Limit Low KB N/A Shows (as a percentage) the low memory limit configured for SSAS in C:\Program Files\Microsoft SQL Server\MSAS10.MSSQLSERVER\OLAP\Config\msmdsrv.ini MSAS 2005: Memory Memory Usage KB N/A Displays the memory usage of the server process. MSAS 2005: Memory File Store KB N/A Displays the amount of memory that is reserved for the Cache. Note if total memory limit in the msmdsrv.ini is set to 0, no memory is reserved for the cache MSAS 2005: Storage Engine Query Queries from Cache Direct / sec N/A Displays the rate of queries answered from the cache directly MSAS 2005: Storage Engine Query Queries from Cache Filtered / Sec N/A Displays the Rate of queries answered by filtering existing cache entry. MSAS 2005: Storage Engine Query Queries from File / Sec N/A Displays the Rate of queries answered from files. MSAS 2005: Storage Engine Query Average time /query N/A Displays the average time of a query MSAS 2005: Connection Current connections N/A Displays the number of connections against the SSAS instance MSAS 2005: Connection Requests / sec N/A Displays the rate of query requests per second MSAS 2005: Locks Current Lock Waits N/A Displays thhe number of connections waiting on a lock MSAS 2005: Threads Query Pool job queue Length N/A The number of queries in the job queue MSAS 2005:Proc Aggregations Temp file bytes written/sec N/A Shows the number of bytes of data processed in a temporary file MSAS 2005:Proc Aggregations Temp file rows written/sec N/A Shows the number of bytes of data processed in a temporary file 

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