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  • Verification of UML Class Diagram

    - by Jean Carlos Suárez Marranzini
    This is my UML Class Diagram made in Astah Community, for a tennis scoreboard game. Here's a link to the image (I don't have enough rep to post images): http://i47.tinypic.com/2lsxx90.png Points are calculated based on moves. Moves can be either points (for the player's advantage) or errors (for the opponent's advantage). The Time Machine allows you to travel to previous game states (expressed as scoreboards). The storage component should be able to store matches independently of the serialization format. The serializers and deserializers should be able to do their job regardless of where the storage lies. The GameEngine should be able to apply the rules of the game regardless of the particularities of the game (hence, dependency injection through the Settings class). The outcomes of games, sets and matches should be deducible based on the points and the rules to apply (the logic implementations are there to provide the rules). Could you please verify my design and tell me if there's anything wrong with it? Thanks in advance.

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  • How do you upgrade/remove a side-by-side installation?

    - by d3vid
    I've hit some snags in the last two upgrades (which I've been able to resolve with time, patience and AskUbuntu :) so come 12.04 I'm considering a side-by-side installation. Perhaps even installing a pre-release before that (because virtual machine testing can't reveal hardware-related issues). So, let's say I installed a side-by-side version. As far as I can tell this splits my existing partition and installs a brand new Ubuntu on partition 2. If all goes well, there are no hardware issues, and my favorite apps seem to be working, how do I switch to a one-sided installation? If I can't, how do I do a side-by-side installation the next time? (And, am I crazy to consider using a pre-release version to do a side-by-side installation?)

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  • How do I go about hosting facebook apps that are picking speed?

    - by Karthik
    My situation is this. I coded in php and built a facebook app. After 3 days it has 13,000 users. I have my own server at hostmonster. It is a regular plan costing me about $70 per year. It has unlimited bandwidth. I did not anticipate hosting apps or that it could pick up so many users. Already 1 Gb of data was transferred in the last few days. I am planning to build a few more apps(around 10 - 20) and reach atleast a million users in total. Should I continue hosting on the same server or move to a VPS? I am a student and I don't have too much of a disposable income. So I want to move only if it is necessary. Right now it shows 1 Gb/infinity in data transfer. Any help/suggestions highly appreciated.

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  • How to improve wireless network speed?

    - by Toby
    I am running 10.04 LTS on a desktop PC with a Belkin G-Plus MIMO Wireless network card. Ever since running Ubuntu on the machine I have noticed fairly slow network speeds (about half the speed I get when running the same card through Windows) I did some research I found out that by and large wireless network cards aren't that well supported on most Linux distros. I was wondering though if there is anything I could be tweaking on the system that could help squeeze a little more out of the card? Here is some more information *-network:1 description: Wireless interface physical id: 2 logical name: wlan0 serial: 00:1c:df:24:5e:54 capabilities: ethernet physical wireless configuration: broadcast=yes ip=192.168.1.5 multicast=yes wireless=IEEE 802.11bg

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  • Újabb házassági terv az adatbázis piacon: Sybase és SAP

    - by Fekete Zoltán
    Az Oracle az utóbbi évben technológiai és alkalmazás oldalon több mint 50 céget vásárolt meg, legutóbb a hardver-operációs rendszer, Java, IDM, virtualizáció és számos más téren is innovatív Sun céget. Ráadásul az Oracle best-of-breed azaz iparági vezeto cégekkel és mogoldásokkal erosíti a portfólióját. Az Oracle hosszú évek óta az adattárházak (data wrehouse) területén is a Gartner szerint a piacvezetok mágikus négyzetében van. Ennek a területnek vezeto megoldása az Oracle Database optimalizált hardveren futtatása az Exadata / Database Machine területen. Az Oracle Database mind tranzakciókezelésre mind adattárház feldolgozásra, mind ezen megoldások egy környezetben futtatására optimalizált megoldás. Az SAP korábban meglehetosen elítélte az Oracle best-of-breed felvásárlási stratégiáját, mondván az nem vezet semmire. :) Most a megmaradék önálló cégek közül a Sybase-t szemelte ki. A BBC híre. Kicsit soknak tunik az 5,8 milliárd dollár? Érdekes, hogy a cikk szerint a felvásárlási terv hírére az SAP részvény árfolyam 40 centtel esett.

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  • AWStats: cannot access /var/log/apache2/access.log

    - by Joril
    I installed awstats on my new Ubuntu Lucid server, but when cron tries to run it as user www-data, it complains that cannot access /var/log/apache2/access.log: Permission denied. In /usr/share/doc/awstats/README.Debian there's this paragraph: By default Apache stores (since version 1.3.22-1) logfiles with uid=root and gid=adm, so you need to either... 1) Change the rights of the logfiles in /etc/logrotate.d/apache so that www-data has at least read access. 2) As 1) but change to a specific user, and use the suEXEC feature of Apache to run as same user (and either change the right of /var/lib/awstats as well or use another directory). This is more complicated, but then the logs are not generally accessible to the server (which was probably the point of the Apache default). 3) Change awstats.pl to group adm (but beware that you are then taking the risk of allowing a CGI-script access to admin stuff on the machine!). I'd go with 1, but what are the recommended permissions to grant?

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  • Lancement d'un forum Usine Logicielle dédié aux pratiques et outils s'inscrivant dans une démarche d

    Bonjour, Le forum Usine Logicielle a été créé dans le but de couvrir un domaine en forte croissance depuis quelques années qui est à rapprocher de démarches bien présentes dans d'autres sciences de l'ingénierie (ex. mécanique) touchant à l'industrialisation. Vous trouverez donc des forums dédiés à des problématiques telle la gestion de sources, le build, l'intégration continue, la traçabilité, la qualimétrie, etc. Comme il est délicat et difficilement concevable de séparer théorie/pratique et outils sur ces thèmes, le présent forum et ses sous-forum adresse à chaque fois les deux aspects (aux forums spécialisés sur des outils - ou assimilés - créés en fonction de leur popularité). Vous trouverez donc quelques forums existants com...

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  • How to configure permanent autologin?

    - by DanielGibbs
    I'm trying to set up an Ubuntu 12.04 machine as a kiosk and I would like it, on boot, to automatically log in as my kiosk user "kiosk", and start the appropriate display manager, in this case blackbox. I have configured /etc/lightdm/lightdm.conf as in this question and have an appropriate /usr/share/xsessions/blackbox.desktop to launch blackbox. I managed to get initial autologin by using the dbus-send method in this question, however if I right-click and select "Exit" from blackbox, then I am taken back to the login screen. How can I configure lightdm/ubuntu to always autologin as "kiosk" instead of displaying the login screen? Or, failing that, how can I configure blackbox to not display a menu when I right-click?

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  • Epsilon : An Oracle Customer Profile

    - by Anand Akela
    ZDNet published an article today based on the interview of Jeff White, vice president, technology, strategic database services at Epsilon. Jeff discussed Oracle Exadata Database Machine and Oracle Enterprise Manager with the ZDNet writer Dan Kusnetzky . Read the article  Epsilon : An Oracle Customer Profile . Jeff White, Epsilon VP, was honored with Oracle’s Data Warehouse Leader of the Year for Innovative Data Warehouse Deployment of Oracle Exadata and Oracle Enterprise Manager earlier this year. In one of the videos earlier this year, Jeff mentioned that Epsilon has streamlined IT administration, monitoring, and engineered systems maintenance with Oracle Enterprise Manager. Having gained in operational efficiencies, Epsilon is now providing greater efficiencies to its customers. For more information, please go to Oracle Enterprise Manager  web page or  follow us at :  Twitter | Facebook | YouTube | Linkedin | Newsletter

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  • Good PHP BOOKS for starters!

    - by Goma
    I started reading some PHP books. Most of them in their introduction say that this book , unlike other books, it follows a good habits and practices. Now, I do not know which book tells the truth, and which writer is the most experienced in PHP. These are the books that I had a quick look to their first chapter: PHP and MySQL Web Development (Developer's Library) by Luke Welling and Laura Thomson. Build Your Own Database Driven Web Site Using PHP & MySQL by Kevin Yank. PHP and MySQL for Dummies by Janet Valade. Now, it's your time to advise me and tell me about the excellent one that follows best practices, please give an advice from your experience. (It could be any other book!). Regards,

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  • Grub boot problems with older ubuntu

    - by denk doink
    This is my 1st post here and there are 2 problems that are inter-related. I'm not much of a Linux system person... the computer is a dedicated linux box without any windoze. 1) running 9.10 and had a boot failure last week. looks like a file was deleted or corrupted. i was unable to get it to work. realizing it was a boot issue, i took the CD and installed 9.04 to co-exist with 9.10 on the disc. 9.04 was put into a 2.5 gb ext3 partition. i was able to boot into 9.10 from grub menu selection. 9.04 was now the default in grub menu. 2) i want to remove/delete/purge 9.04 completely from my system and "clean up" the stuff so that the machine boots straight to 9.10 (no grub menu). how are these accomplished in a "safe" manner? thank you. -denk

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  • SQL Server 2008 Service Pack 1 and the Invoke or BeginInvoke cannot be called error message

    - by Jeff Widmer
    When trying to install SQL Server 2008 Service Pack 1 to a SQL Server 2008 instance that is running on a virtual machine, the installer will start:   But then after about 20 seconds I receive the following error message: TITLE: SQL Server Setup failure. ----------------------------- SQL Server Setup has encountered the following error: Invoke or BeginInvoke cannot be called on a control until the window handle has been created. ------------------------------ BUTTONS: OK ------------------------------ Searching for this issue I found that several people have the same problem and there is no clear solution.  Some had success with closing windows or Internet Explorer but that didn’t work for me; what did work is to make sure the SQL Server 2008 “Please wait while SQL Server 2008 Setup processes the current operation.” dialog is selected and has the focus when it first shows up.  Selected (with the current focus) it looks like this:   Without focus the dialog looks like this: Add a comment if you find out any information about how to consistently get around this issue or why it is happening in the first place.

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  • Windows Azure Tools for Microsoft Visual Studio 1.2 (June 2010)

    - by Eric Nelson
    Yey – we have a public release of the Windows Azure Tools which fully supports Visual Studio 2010 RTM and the .NET 4 Framework. And the biggy I have been waiting for – IntelliTrace support to debug your cloud deployed services (Requires  VS2010 Ultimate) Download today http://bit.ly/azuretoolsjune New for version 1.2: Visual Studio 2010 RTM Support: Full support for Visual Studio 2010 RTM. .NET 4 support: Choose to build services targeting either the .NET 3.5 or .NET 4 framework. Cloud storage explorer: Displays a read-only view of Windows Azure tables and blob containers through Server Explorer. Integrated deployment: Deploy services directly from Visual Studio by selecting ‘Publish’ from Solution Explorer. Service monitoring: Keep track of the state of your services through the ‘compute’ node in Server Explorer. IntelliTrace support for services running in the cloud: Adds support for debugging services in the cloud by using the Visual Studio 2010 IntelliTrace feature. This is enabled by using the deployment feature, and logs are retrieved through Server Explorer. Related Links: http://ukazure.ning.com for UK fans of Windows Azure IntelliTrace explained

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  • Conditions for a traditional friends system vs. open following system

    - by Dan
    I'm just curious for everyone who is developing social sites out there. When you build a method for connecting users, do you prefer to use a following-style system (follow me, you can see all of my information and I can just choose to follow you back), or instead do you choose to have a friends-style system (I have to allow you see all of my information on your homepage, even if it is open to the public, vise versa). Why and under what circumstances do you use each? How do you manage privacy between your users? Have you use another way to connect your users? Examples of what methods you've choose and how you manage the user's privacy (private by default vs open to the web) are awesome; it could show correlation and provides an actual look.

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  • Change font programmatically for GTK3 TextView (quickly-widgets TextEditor)

    - by monotasker
    In an app using PyGI and GTK3, I'm trying to let the user set the font family and size in a TextView through my app's settings dialog. In PyGI the TextView object has "set" methods for several properties, but not for font properties. I can set the font family via CSS using a CSS style provider. But I can't change that CSS dynamically to respect the font selected by a user. So how can I do this? (Note that the widget in question is actually the TextEditor from the quickly-widgets package and I'm using Quickly to build the app.) Thanks, Ian

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  • BizTalk Server 2010 Beta available

    - by Rajesh Charagandla
    BizTalk Server 2010 Beta - Click Here to Download Overview: BizTalk Server 2010 offers significant enhancements to help integrate heterogeneous Line-of-business systems with Windows .NET and SharePoint based applications to optimize user productivity, gain business efficiency and increase agility . BizTalk Server 2010 allow .Net developers to take advantage of BizTalk services right out of the box to rapidly build solutions that need to integrate transactions and data from applications like SAP, Mainframes, MS Dynamics and Oracle. Similarly SharePoint developers can seamlessly use BizTalk services directly through the new Business Connectivity Services in SharePoint 2010. BizTalk Server 2010 includes new data mapping & transformation tool to dramatically reduce the development time to mediate data exchange between disparate systems. It also provide a new single dashboard to manage performance parameters and streamline deployments from development to test to production. BizTalk 2010 includes new, scalable Trading Partner Management (TPM) model with a graphical interface for flexible management of business partner relationships and efficient on-boarding process.

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  • Google I/O 2010 - Exploring the Google PowerMeter API

    Google I/O 2010 - Exploring the Google PowerMeter API Google I/O 2010 - Knowledge is (less) power: Exploring the Google PowerMeter API Google APIs 101 Srikanth Rajagopalan, Rus Heywood In this session we will discuss interesting ways to make users understand and manage their home energy use through Google PowerMeter. The Google PowerMeter API currently available allows devices to integrate with Google PowerMeter. Come learn how you can build with the API and about exciting developments ahead. We will dig into the implementation details for integrations and open up the floor for other ideas that may be relevant. For all I/O 2010 sessions, please go to code.google.com From: GoogleDevelopers Views: 5 0 ratings Time: 58:20 More in Science & Technology

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  • Web services, Java EE, Spring, DB integration project ideas - maybe data mining related?

    - by saral jain
    I am a graduate Computer Science student (Data Mining and Machine Learning) and have good exposure to core Java (3 years). I have read up on a bunch of stuff on the following topics: Design patterns, Java EE Web services (SOAP and REST), Spring, and Hibernate Java Concurrency - advanced features like Task and Executors. I would now like to do a project combining this stuff -- over my free time of course -- to get a better understanding of these things and to kind of make an end to end software (to learn the best design principles etc + SVN, maven). Any good project ideas would be really appreciated. I just want to build this stuff to learn, so I don't really mind re-inventing the wheel. Also, anything related to data mining would be an added bonus as it fits with my research but is absolutely not necessary since this project is more to learn to do large scale software development.

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  • game performance

    - by iQue
    I'm making a game for android, and earlier today I was trying to add some cool stuff to my game. The problem is this thing needs like 5 timers. I build my timers like this: timer += deltaTime; if(timer >= 2.0f){ doStuff; timer -= 2.0f; } // this timers gets stuff done every 2 secs Will having to many timers like this, getting checked every frame, screw up my games performance? The effect I wanted to add was a crosshair every 2 sec, then remove it after 2 sec and do a timed animation. So an array of crosshairs dependent on a bunch of timers to be exact. This caused my game to shut down when used, so thats why Im wondering if using that many timers causes my game to flip out.

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  • Maximum file size for iFrame in IE7

    - by Peter Turner
    I've got a "super secure" javascript downloader* that I wrote, and it usually works alright. But I noticed, while trying to download a 90 meg file with it on a client's machine that on IE7, it's getting hung up about 1/3rd of the way through. I've never tried to send a file that large through the iFrame and it works fine in other browsers. Is there a size restriction on files that IE7 can read in an iFrame? * It's really just a PHP line that sets header("location: http://someplace/downloadbigthing.exe"); after it does some logging and verification.

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  • Adding new events to be handled by script part without recompilation of c++ source code

    - by paul424
    As in title I want to write an Event system with handling methods written in external script language, that is Angelscript. The AS methods would have acess to game's world modifing API ( which has to be regsitered for Angelscript Machine as the game starts) . I have come to this problem : if we use the Angelsript for rapid prototyping of the game's world behavior , we would like to be able to define new Event Types, without recompiling the main binary. Is that ever possible , don't stick to Angelscript, I think about any possible scripting language. The main thought is this : If there's some really new Event possible to be constructed , we must monitor some information coming from the binary, for example some variable value changing and the Events are just triggered on some conditions on those changes , wer might be monitoring the Creatures HP, by having a function call on each change, there we could define new Events such as Creature hurt, creature killed, creature healed , creature killed and tormented to pieces ( like geting HP very much below 0 ) . Are there any other ideas of constructing new Events at the scripting side ?

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  • Adding an LOV to a query parameter (executeWithParams)

    - by shay.shmeltzer
    I showed in the past how you can use the executeWithParams operation to build your own query page to filter a view object to show specific rows. I also showed how you can make the parameter fields display as drop down lists of values (selectOneChoice). However this week someone asked me if you can have those parameter fields use the advanced LOV component. Well if you just try and drag the parameter over, you'll see that the LOV option is not there as a drop option. But with a little bit of hacking around you can achieve this. (without actual Java coding). Here is a quick demo:

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  • Building a custom Xsession with VNC access

    - by Disco
    I have a small project where I'll need to build a very minimal X11 environnement for a cyber coffee kind shop. My idea is to have a simple server which will create a dozen of VNC Daemon listening on a different port (each port = one client). The server is working, i can connect using vnc to different port. Now i'm looking for a solution to create a customized desktop for each client; with a bare minimum of apps which i want to be able to add for each user. Like user1 will have app1 and app2, user2 will have app1 only etc. I plan to use openbox as a WM but no clue on 'how' to add custom icons on the desktop of it. Any clue, starting point would be interesting.

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  • Visio Stencils for ADF Faces Available on SampleCode

    - by juan.ruiz
    We are pleased to announce the launch of a new tool aiming to help visual designers and UI developers to build mockups for ADF applications outside of JDeveloper in a fast and quickly way. Available through samplecode.oracle.com, the ADF Visio stencils provide you with a large set of shapes, icons and layouts representing the most commonly used visual components. You can check out this video that shows you how to get you started using the Visio stencils. Let us know what do you think about the stencils on the JDeveloper Forum, your feedback is always important to us.

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  • New to Ubuntu - 12.04.1 Kernel Panic on Installation

    - by user88432
    I'm a complete Ubuntu and even Linux newbie. I'm learning here, so I'm grateful for any info to help me learn more about this. I have a Dell Dimension 2400 with a Pentium 4 and 1GB of RAM. It's older but it's only going to be doing some small stuff for me when I get it up and going. I've tried installing several versions of Linux (but I really, really want Ubuntu) and I keep getting a similar kernel panic message. The problem is I don't have a clue what that means or how to begin fixing it. I would appreciate any help to get my machine up and going. I have already tried Installing alternate Ubuntu versions Burning multiple 12.04.1 disks Installing other versions of Linux I have a picture of the screen to share; however, I can't post due to the fact that I don't have enough reputation points on this forum because I'm a newbie. I would be happy to email you a pic, if you think you can help.

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