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• I want to sell my software [C# desktop application] but I was Stuck in licencing [closed]

  - by Surendra Soni

  Possible Duplicate: if I use .NET Framework for my application, do I have to pay anything to Microsoft? I have developed a desktop application called "Institute Management System" which has modules like Class manager, Subject manager, Topics manager, Student inquiry manager Student admission manager, Fees manager, Exam manager etc. using C# for the front end and MS Access for the back end. The main problem is that I want to sell it and earn some money but I heard that my application needs to be registered at Microsoft, and I would have to get a license from them for selling, and have to pay them money too. I have spent four months developing it at my own expense, and worked very hard to develop it. So I want some tips, advice, any suggestion for the same. Please also tell me the procedure for all of the required registrations and payment issues. And I also want to ask you if you Can you suggest any other technology where I develop my application and sell it without worrying about licencing and related issues? I am now more confused about that "MS technology is open source or not? "

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• SQL – Difference Between INNER JOIN and JOIN

  - by Pinal Dave

  Here is the follow up question to my earlier question SQL – Difference between != and Operator <> used for NOT EQUAL TO Operation. There was a pretty good discussion about this subject earlier and lots of people participated with their opinion. Though the answer was very simple but the conversation was indeed delightful and was indeed very informative. In this blog post I have another following up question to all of you. What is the difference between INNER JOIN and JOIN? If you are working with database you will find developers use above both the kinds of the joins in their SQL Queries. Here is the quick example of the same. Query using INNER JOIN SELECT * FROM Table1 INNER JOIN  Table2 ON Table1.Col1 = Table2.Col1 Query using JOIN SELECT * FROM Table1 JOIN  Table2 ON Table1.Col1 = Table2.Col1 The question is what is the difference between above two syntax. Here is the answer – They are equal to each other. There is absolutely no difference between them. They are equal in performance as well as implementation. JOIN is actually shorter version of INNER JOIN. Personally I prefer to write INNER JOIN because it is much cleaner to read and it avoids any confusion if there is related to JOIN. For example if users had written INNER JOIN instead of JOIN there would have been no confusion in mind and hence there was no need to have original question. Here is the question back to you - Which one of the following syntax do you use when you are inner joining two tables – INNER JOIN or JOIN? and Why? Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Joins, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• Red Dot Scope Makes Sighting In Long Lenses a Snap

  - by Jason Fitzpatrick

  If you’ve ever used a high power lens, you know how tricky it can be to sight a distant subject as the field of view through the lens is so tiny. This hack takes care of that problem by using a zero-magnification red dot rifle scope. Chris Malcolm enjoys photographing birds and other wildlife with high power lenses. The problem, when shooting with huge 500mm lens and other high power lenses, is that they’re practically telescopes and acquiring a fast moving target like a bird using a through-the-lens technique is very tricky. Malcolm’s solution hinges on mounting a zero-magnification red dot rifle scope in parallel with the lens. His mock up is a bit unpolished (although we can understand not wanting to run out and buy a brand new black scope just for the experiment) but works great to get him on target. Hit up the link below to read more about his build, how be created the rail mount for the scope, and why he opted to mount it to the barrel of the lens and not the hot shoe mount on the camera. 500mm Reflex Lens with Red Dot Sight [via DIY Photography] Make Your Own Windows 8 Start Button with Zero Memory Usage Reader Request: How To Repair Blurry Photos HTG Explains: What Can You Find in an Email Header?

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• SQL SERVER – Download PSSDIAG Data Collection Utility

  - by pinaldave

  During an early career of mine as a database consultant – when I was dealing with SQL Server 2000, I often needed to collect various data related to SQL Server. My favorite tool to collect the data is PSSDIAG tool. It is a general purpose diagnostic collection utility that Microsoft Product Support Services uses to collect various logs and data files. It collects Performance Monitor logs, SQL Profiler traces, SQL Server blocking script output, Windows Event Logs, and SQLDIAG output. The data collected can be used by SQL Nexus tool which help you troubleshoot SQL Server performance problems. PSSDIAG is a wrapper around other data collection APIs and utilities, the performance impact of running PSSDIAG is generally equal to the impact of the traces that PSSDIAG has been configured to capture. If you are using SQL Server 2000 – you need to seriously consider to upgrading it to SQL Server 2012. Here is a PSSDIAG Data Collection Utility updated in August 2012. My friend and SQL Server Expert Amit Benerjee have written an excellent article on this subject, I encourage all of you to read the same. Note: For SQL Server 2012 there is SQLDiag. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Download, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority News, T SQL, Technology

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• SQLAuthority News – Presenting at Tech-Ed On Road – Ahmedabad – June 11, 2011 – Wait Types and Queues

  - by pinaldave

  I will be presenting in person on the subject SQL Server Wait Types and Queues at Ahmedabad on June 11, 2011. Here is the quick summary of the session. SQL Server Waits and Queues – Your Gateway to Perf. Troubleshooting Time: 11:15am – 12:15pm – June 11, 2011 Just like a horoscope, SQL Server Waits and Queues can reveal your past, explain your present and predict your future. SQL Server Performance Tuning uses the Waits and Queues as a proven method to identify the best opportunities to improve performance. A glance at Wait Types can tell where there is a bottleneck. Learn how to identify bottlenecks and potential resolutions in this fast paced, advanced performance tuning session. This session is based on my performance tuning Wait Types and Queues series. SQL SERVER – Summary of Month – Wait Type – Day 28 of 28 During the session there will be Quiz and those who gets right answer will get very interesting gifts from me. Do not miss a single minute of the event. We are also going to have two rock star speakers – Harish Vaidyanathan and Jacob Sebastian. Here is the details for the event: SQLAuthority News – Community Tech Days – TechEd on The Road – Ahmedabad – June 11, 2011 Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: About Me, Pinal Dave, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority Author Visit, T SQL, Technology

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• What are the licensing issues involved in the Oracle/Apache java dispute?

  - by Chris Knight

  I've just started following with interest the soap opera involving Oracle's acquisition of Java and the detriment of goodwill it seems to have generated in the open source community. Specifically, I'm now trying to get my head around the implications of Oracle's decision to refuse Apache an open source license for Harmony. My questions: 1) What is Harmony anyway? Their website states "Apache Harmony software is a modular Java runtime with class libraries and associated tools". How is this different than J2SE or J2EE? Or is Harmony akin to Andriod? 2) The crux of this issue is around the Java Technology Compatibility Kit (or TCK) which certifies that your implementation adheres to the JSR specifications. If I understand correctly, Oracle refuse to offer free or open source license access to the TCK, denying projects like Harmony from being released as open source. Why is this such a big deal for Apache? E.g. why can't (or don't) they release Harmony under a restricted license? 3) From this site is the following quote: It looks like Oracle’s plan is to restrict deployments of Java implementations in certain markets, particularly on mobile platforms, so that it can monetize its own Java offering in those markets without any competition. Presumably anything Oracle produced would be subject to the same restrictions it is imposing on others with respect to end-technology licensing, so how could they get a leg up on the competition? While no doubt distateful, wouldn't other competitors such as Google or Apache be able to release competing platforms under the same license as Oracle?

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• SQL – Download NuoDB and Qualify for FREE Amazon Gift Cards

  - by Pinal Dave

  July has been a fantastic month and Team NuoDB has really appreciated the active participation of the SQLAuthority.com active reader base. Earlier we had launched two contests with NuoDB and both of them are very much appreciated by readers. There are constant demands of more contests and team NuoDB is very much excited to support more contests. Here are the details to constests ran earlier: What ACID stands in the Database? – Contest to Win 24 Amazon Gift Cards and Joes 2 Pros 2012 Kit What is the latest Version of NuoDB? – A Quick Contest to Get Amazon Gift Cards Based on the earlier successful contests, the kind folks at NuoDB decided that they will support one more round of the giveaways to SQLAuthority.com contests. However, please note that this month’s contest will end in next 48 hours. You have to take part before July 31st, 2013 11:59:00 PM PST. Here is the quick contest: You just have to go and download NuoDB. The first 10 people who will download the NuoDB will get Amzon USD 10 cards. Remaining everyone will be entered into a lucky draw of Amazon Gift cards of USD 50. Winners will be announced in next 24 hours. To eligible for this contest, please download NuoDB before July 31st, 2013 11:59:00 PM PST. Bonus Round: If you have entered in the contest above, you can also enter to win latest Beginning SSRS Joes 2 Pros book. You just have to leave a comment over here with the note about how many different platform NuoDB supports. Here are few of the blog post I wrote earlier on that subject: Part 1 – Install NuoDB in 90 Seconds Part 2 – Manage NuoDB Installation Part 3 – Explore NuoDB Database Part 4 – Migrate from SQL Server to NuoDB Part 5 - NuoDB and Third Party Explorer – SQuirreL SQL Client, SQL Workbench/J and DbVisualizer Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Download, SQL Query, SQL Server, SQL Tips and Tricks, T SQL

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• Why Freezing when sending email?

  - by Outlaw Lemur

  So i have a kinect program which when it detects a human, it saves images of them and sends your email a notification email, the thing is that when it sends the email, it freezes and stops running, Why does it do this? Email Notification Code: void SendNotificationEmail() { string email = textBox1.Text; string message = "Someone has been detected in your house!\n Go to www.kinected.webs.com to view your photos now!!!!"; System.Net.Mail.MailMessage emailsend = new System.Net.Mail.MailMessage(); emailsend.To.Add(email); emailsend.Subject = "There is an Intruder In Your Home!"; emailsend.From = new System.Net.Mail.MailAddress("[email protected]"); emailsend.Body = message; System.Net.Mail.SmtpClient smtp = new System.Net.Mail.SmtpClient("smtp.mail.yahoo.com."); smtp.Send(emailsend); } When its supposed to fire: void nui_ColorFrameReady2(object sender, ImageFrameReadyEventArgs e) { // 32-bit per pixel, RGBA image xxx PlanarImage Image = e.ImageFrame.Image; //int deltaFrames = totalFrames - lastFrameWithMotion; //if (totalFrames2 <= stopFrameNumber & deltaFrames > 300) { ++totalFrames2; string bb1 = Convert.ToString(totalFrames2); // string file_name_3 = "C:\\Research\\Kinect\\Proposal\\Depth_Img" + bb1 + ".jpg"; xxx string file_name_4 = "C:\\temp\\Kinect1_Img" + bb1 + ".jpg"; video.Source = BitmapSource.Create( Image.Width, Image.Height, 96, 96, PixelFormats.Bgr32, null, Image.Bits, Image.Width * Image.BytesPerPixel); BitmapSource image4 = BitmapSource.Create( Image.Width, Image.Height, 96, 96, PixelFormats.Bgr32, null, Image.Bits, Image.Width * Image.BytesPerPixel); if (PersonDetected == 1) { if (totalFrames2 % 10 == 0) { image4.Save(file_name_4, Coding4Fun.Kinect.Wpf.ImageFormat.Jpeg); SendNotificationEmail(); PersonDetected = 0; // lastFrameWithMotion = totalFrames; // topFrameNumber += 100; } } } } Thanks for any help!

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• Flash AS3 sidescrolling tiles optimization

  - by Galvanize

  I'm trying to make a sidescrolling game in Flash that will run on a low performance laptop. While studying the subject from Tonypa I saw that he builds a Bitmap by making copys of the BitmapData of each tile from the Tile Sheet and placing it on the bigger Bitmat with the size of the screen. But when I came to think on how to scroll my map I ran into some optimization doubts. I came up with two choices: Create a MovieClip, place a Bitmap instance for each tile that is shown on the screen + 1 row in it, then move them all. Then when the tile ran off the screen I would move it to end of the MovieClip and replace their BitmapData for the next row in my map. Use a Bitmap with copys of each tile in it (as shown in Tonypa's tutorial) but 1 extra row, move the whole Bitmap, and when it comes the time to replace rows, redraw the whole Bitmap and move it back to the origin position. The first idea is how a co-worker of mine suggested, the second one is my own, but none of us has enough technical knowledge to be sure on a technique that would be optimal in performance, can anyone help?

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• Git Project Dependencies on GitHub

  - by VirtuosiMedia

  I've written a PHP framework and a CMS on top of the framework. The CMS is dependent on the framework, but the framework exists as a self-contained folder within the CMS files. I'd like to maintain them as separate projects on GitHub, but I don't want to have the mess of updating the CMS project every time I update the framework. Ideally, I'd like to have the CMS somehow pull the framework files for inclusion into a predefined sub-directory rather than physically committing those files. Is this possible with Git/GitHub? If so, what do I need to know to make it work? Keep in mind that I'm at a very, very basic level of experience with Git - I can make repositories and commit using the Git plugin for Eclipse, connect to GitHub, and that's about it. I'm currently working solo on the projects, so I haven't had to learn much more about Git so far, but I'd like to open it up to others in the future and I want to make sure I have it right. Also, what should my ideal workflow be for projects with dependencies? Any tips on that subject would also greatly appreciated. If you need more info on my setup, just ask in the comments.

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• What's upcoming in the GlassFish Webinar Series

  - by pieter.humphrey

  2011 is kicking off with the return of the GF Webinar series as you've never seen it before.  It's going to be packed with information about Java EE6 and how simplicity, testability and convention-over-configuration is winning the hearts and minds of enterprise Java developers.  Don't miss these industry leading speakers and topics reviewing the cutting edge of Java EE6 implementations, tools, and much more.   Note:  future dates are subject to change. Jan 20th: GlassFish & Netbeans Jan 27th: Building a Simple Web Application with Java EE Feb 15th: Java EE Developer Tools 'shootout' with GlassFish Feb 24th: What's New in GlassFish 3.1 Clustering & HA Admin Console Coherence Web Integration Security Microkernel Architecture March 15th: GlassFish 3.1 - clustering deep dive March 29th: GlassFish 3.1 - Admin Console & Productivity Features April 5th: GlassFish 3.1 - Coherence Web Integration deep dive Possible "Tech cast live" event: April (date TBC): Special Guest Adam Bien April 19th: GlassFish 3.1 - Security deep dive with Byron Nevins & TBD May 3rd: GlassFish 3.1 - Microkernel Architecture deep dive Possible "Tech cast live" event: May 17th: "Upgrading to 3.1 from existing GlassFish installations" May 31st: Embedded GlassFish del.icio.us Tags: glassfish,development,java,java ee,java ee6,OTN,NetBeans,JDeveloper,enterprise Pack for Eclipse Technorati Tags: glassfish,development,java,java ee,java ee6,OTN,NetBeans,JDeveloper,enterprise Pack for Eclipse

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• Should these concerns be separated into separate objects?

  - by Lewis Bassett

  I have objects which implement the interface BroadcastInterface, which represents a message that is to be broadcast to all users of a particular group. It has a setter and getter method for the Subject and Body properties, and an addRecipientRole() method, which takes a given role and finds the contact token (e.g., an email address) for each user in the role and stores it. It then has a getContactTokens() method. BroadcastInterface objects are passed to an object that implements BroadcasterInterface. These objects are responsible for broadcasting a passed BroadcastInterface object. For example, an EmailBroadcaster implementation of the BroadcasterInterface will take EmailBroadcast objects and use the mailer services to email them out. Now, depending on what BroadcasterInterface implementation is used to broadcast, a different implementation of BroadcastInterface is used by client code. The Single Responsibility Principle seems to suggest that I should have a separate BroadcastFactory object, for creating BroadcastInterface objects, depending on what BroadcasterInterface implementation is used, as creating the BroadcastInterface object is a different responsibility to broadcasting them. But the class used for creating BroadcastInterface objects depends on what implementation of BroadcasterInterface is used to broadcast them. I think, because the knowledge of what method is used to send the broadcasts should only be configured once, the BroadcasterInterface object should be responsible for providing new BroadcastInterface objects. Does the responsibility of “creating and broadcasting objects that implement the BroadcastInterface interface” violate the Single Responsibility Principle? (Because the contact token for sending the broadcast out to the users will differ depending on the way it is broadcasted, I need different broadcast classes—though client code will not be able to tell the difference.)

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• SQLAuthority News – Whitepaper Download – Using Star Join and Few-Outer-Row Optimizations to Improve Data Warehousing Queries

  - by pinaldave

  Size of the database is growing every day. Many organizations now a days have more than TB of the Data in their system. Performance is always part of the issue. Microsoft is really paying attention to the same and also focusing on improving performance for Data Warehousing. Microsoft has recently released whitepaper on the performance tuning subject of Data Warehousing. Here is the abstract about the whitepaper from official site: In this white paper we discuss two of the new features introduced in SQL Server 2008, Star Join and Few-Outer-Row optimizations. These two features are in SQL Server 2008 R2 as well.  We test the performance of SQL Server 2008 on a set of complex data warehouse queries designed to highlight the effect of these two features and observed a significant performance gain over SQL Server 2005 (without these two features). The results observed also apply to SQL Server 2008 R2.  On average, about 75 percent of the query execution time has been reduced, compared to SQL Server 2005. We also include data that shows a reduction in the number of rows processed and improved balance in parallel queries, both of which highlight the important role the Star Join and Few Outer-Row features played. I encouraged all of those interested in Data Warehouse to read it and see if they can learn the tricks. Using Star Join and Few-Outer-Row Optimizations to Improve Data Warehousing Queries Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Documentation, SQL Download, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority News, T SQL, Technology

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• Access Control and Accessibility in Oracle IRM 11g

  - by martin.abrahams

  A recurring theme you'll find throughout this blog is that IRM needs to balance security with usability and manageability. One of the innovations in Oracle IRM 11g typifies this, as we have introduced a new right that may be included in any role - Accessibility. When creating or modifying a role, you simply select Accessibility along with Open, Print, Edit or whatever rights you want to include in the role. You might, for example, have parallel roles of Reader and Reader with Accessibility and Contributor and Contributor with Accessibility. The effect of the Accessibility right is to relax some of the protection of content in use such that selected users can use accessibility tools. For example, a user with the Accessibility right would be able to use the screen magnification tool, which IRM would ordinarily prevent because it involves screen capture. This new right makes it easy for you to apply security to documents yet, subject to suitable approval processes, cater for the fact that a subset of users might be disproportionately inconvenienced by some of the normal usage constraints. Rather than make those users put up with the restrictions, or perhaps exempt them from using sealed documents altogether, this new right allows you to accommodate them in a controlled manner, and to balance security with corporate accessibility goals.

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• case-specific mod rewrite on Wordpress subdomain multisite

  - by Steve

  I have split a Wordpress blog into multiple category-specific blogs using subdomains, as the topics in the original blog were too broad to be lumped together effectively. Posts were exported from the parent www blog and imported into the subject-specific subdomain blogs. I believe .htaccess provides mod rewrite for all subdomains (including the original www) in a single .htaccess file. I use .htaccess to perform 301 redirect on post categories to the relevant post on the subdomain's blog. eg: RedirectMatch 301 ^/auto/(.*)$ http://auto.example.com/$1 The problem I have is that the category has been retained in the permalink structure in the subdomain blog, so that www.example.com/auto/mercedes is now auto.example.com/auto/mercedes. The 1st URL is redirect to the 2nd, but unfortunately, the 2nd URL is redirected to auto.example.com/mercedes using the same rewrite rule, which is not found, as the permalink on the subdomain's blog retains the parent category of auto. The solution would be to adjust the permalink structure in the subdomain's WP settings, so that the top level category does not duplicate the subdomain. My question would be: how do I then strip a section of the original (www) blog's post URL from the subdomain's URL when redirecting? eg: How do I redirect www.example.com/auto/mercedes to auto.example.com/mercedes? I'm assuming this would be a regular expression trick, which I am not great at. Update: I might have to use: RewriteCond %{HTTP_HOST} !auto.example.com$ in the default Wordpress if loop in .htaccess, and seperate my custom subdomain redirections into a second if loop section.

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• How do I properly set up and secure a production LAMP Server?

  - by Niklas

  It's very hard to find comprehensive information on this subject. Either I found short tutorials on how you perform the installation, as simple as "apt-get install apache2", or outdated tutorials. So I was hoping I could get some professional information from my fellow members of the Ubuntu community :D I have performed a normal Ubuntu Server 11.04 with LAMP, SAMBA and SSH installed through the system installation. But I'm having some trouble setting up virtual hosts and to make the system secure enough to expose the server to the web. I've somewhat followed this tutorial this far. I have 3 sites in /etc/apache2/sites-available which all looks like this except for different site names: <VirtualHost example.com> ServerAdmin webmaster@localhost ServerAlias www.edunder.se DocumentRoot /var/www/sites/example CustomLog /var/log/apache2/www.example.com-access.log combined </VirtualHost> And I have enabled them with the command a2ensite so I have symbolic links in /etc/apache2/sites-enabled. My /etc/hosts file has these lines: 127.0.0.1 localhost 127.0.1.1 Ubuntu.lan Ubuntu 127.0.0.1 localhost.localdomain localhost example.com www.example.com 127.0.0.1 localhost.localdomain localhost example2.com www.example2.com 127.0.0.1 localhost.localdomain localhost example3.com www.example3.com And I can only access one of them from the browser (I have lynx installed on the server for testing purposes) so I guess I haven't set them up properly :) How should I proceed to get a secure and proper setup? I also use MySQL and I think that this tutorial will be enough to set up SSH securely. Please help me understanding Apache configuration better since I'm new to setting up my own server (I've only run XAMPP earlier) and please advise regarding how I should setup a firewall as well :D

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• DriveSafe.ly Reads Your Text Messages Aloud

  - by ETC

  DriveSafe.ly, a free application for Android and BlackBerry phones, reads your text messages, emails, and caller ID notifications aloud so you can stay connected while keeping your eyes on the road. DriveSafe.ly is a feature packed application that reads your text messages, your emails, and the ID from your caller ID aloud. It’s not the only SMS-to-speech application out there but it sports the most featured including rocking a customizable auto-responder (so you can let people know you heard their message and will respond as soon as you’re off the road), the ability to customize the voice and the read-rate, how much information if given (the senders name or just the message or the senders name, subject, and message in the case of emails), and more. Upgrading to the $13.95 a year premium version allows voice-to-txt translation so you can respond verbally to your text messages and emails. Hit up the link below to read more and grab a copy for your Android or BlackBerry phone. DriveSafe.ly [via Addictive Tips] Latest Features How-To Geek ETC Have You Ever Wondered How Your Operating System Got Its Name? Should You Delete Windows 7 Service Pack Backup Files to Save Space? What Can Super Mario Teach Us About Graphics Technology? Windows 7 Service Pack 1 is Released: But Should You Install It? How To Make Hundreds of Complex Photo Edits in Seconds With Photoshop Actions How to Enable User-Specific Wireless Networks in Windows 7 DriveSafe.ly Reads Your Text Messages Aloud The Likability of Angry Birds [Infographic] Dim an Overly Bright Alarm Clock with a Binder Divider Preliminary List of Keyboard Shortcuts for Unity Now Available Bring a Touch of the Wild West to Your Desktop with the Rango Theme for Windows 7 Manage Your Favorite Social Accounts in Chrome and Iron with Seesmic

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• Howto fix "[Errno 13] Permission denied" in mailman mailing lists

  - by Michael

  After migrating domains from one plesk server onto another, I got several of those mails every day: (the target mailbox does not exist, so I get those as undeliverable mail bounces) Return-Path: <[email protected]> Received: (qmail 26460 invoked by uid 38); 26 May 2012 12:00:02 +0200 Date: 26 May 2012 12:00:02 +0200 Message-ID: <20120526100002.xyzxx.qmail@lvpsxxx-xx-xx-xx.dedicated.hosteurope.de> From: [email protected] (Cron Daemon) To: [email protected] Subject: Cron <list@lvpsxxx-xx-xx-xx> [ -x /usr/lib/mailman/cron/senddigests ] && /usr/lib/mailman/cron/senddigests Content-Type: text/plain; charset=ANSI_X3.4-1968 X-Cron-Env: <SHELL=/bin/sh> X-Cron-Env: <HOME=/var/list> X-Cron-Env: <PATH=/usr/bin:/bin> X-Cron-Env: <LOGNAME=list> List: xyzxyz: problem processing /var/lib/mailman/lists/xyzxyz/digest.mbox: [Errno 13] Permission denied: '/var/lib/mailman/archives/private/xyzxyz' I tried to fix the permissions myself, but the problem still exists.

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• Why I don't use SSIS checkpoint files

  - by jamiet

  In a recent discussion in regard to general ETL best practises the subject of checkpoint files as a means for package restartability came up and I stated that I was dead against using them. For anyone that may care, here is why: Configuring them is distinctly unintuitive (that's a matter of opinion but if you follow the link I'll wager that you will agree) they don't make any allowance for loop iterations they cannot store variables of type Object they are limited in ability. There are many scenarios where you may want to execute certain containers regardless of whether the package is started from a checkpoint file but the current usage model does not allow for this. they are ignored by eventhandlers, which wouldn't be so bad if there were a way to toggle this behaviour in certain scenarios they dont work properly I'll expand on the last bullet point. I have encountered situations where the behaviour for tasks executing concurrently is unpredictable. That is, sometimes the completion of a task that executes concurrently with a failed/failing task will make it into the checkpoint file and sometimes it won't. This is near-impossible to reproduce but it does happen as my good friend John Welch will hopefully concur (if he is reading). Is anyone out there making successful use of checkpoint files within SSIS? I would be interested in knowing about that if so. @Jamiet

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• So are we ever getting the technological singularity

  - by jsoldi

  I´m still waiting for an AI robot that will pass the Turing test. I keep going back to http://www.a-i.com/ and nothing. I don´t know much about AI but, did anyone ever tried to make a genetic algorithm whose evolution algorithm itself evolves? Or how about one whose algorithm that makes the genetic algorithm evolve, evolves? Or one whose genetic algorithm that makes the genetic algorithm that makes the genetic algorithm evolve, evolves? Or how about an algorithm that abstracts all this into a potentially infinitely deep tree of genetic evolution algorithms? Aren´t we just failing as programmers? And I don´t think we can blame the processors speed. If you make and application that simulates consciousness you will get a Nobel prize no matter how many hours it takes to respond to your questions. But nobody did it. It almost reminds me to Randi´s $1000000 paranormal challenge. As I keep going back to AI chat bots, they keep getting better at changing the subject on a way that seems natural. But if I tell them something like "if 'x' is 2 then whats two times 'x'?" then they don't have a clue what I'm talking about. And I don't think they need a whole human brain simulation to be able to answer to something like that. They don't need feelings or perception. This is just language and logics. I don't think my perception of the color red gives me the ability to understand that if 'x' is 2 then two times 'x' is 4. I'm sure we are just missing some elemental principle we cannot grasp because it's probably stuck behind our eyes. What do you think?

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• Advice on a good comeback strategy after years of java abstinence

  - by simou

  It's almost 5 yrs since I left the java IT-project/enterprise business. Before I was a highly skilled enterprise developer / OO architect with more than 10 years experience in the business. I was proficient in many of those enterprise related technologies, including DWHing. Since then I haven't been doing any large scale programming, a little bit of C, Python, some dips into Scala, hacking a small java-plugin framework, opengl, but only as fun projects. Now I want to re-enter the java stage again, i.e. I'm looking for job opportunities as a developer. But I fear I might have lost much of my former punching strength, e.g. I would have to give my SQL knowledge a deep refreshing breath, re-visit basic stuff like design patterns, enterprise architectures, etc. and probably learn the new stuff like EJB3.1, JEE 6 too. I also missed the whole scrum craze. So from your own experience, what subject should I tackle first? Like technology (which ones?) or design skills (uml..)? But what I'm also wondering is since the basic design / architectural principles haven't changed much by now, what would be the chance on the job market for someone like me who left the java-world at a time where everything was less fragmented and EJB2.1 and XDoclet were de-facto standards? And how could I convince a potential employer that I'm still an effective on-the-job learner? Should I rather aim for "junior positions" ? Lots of questions but I'd be really glad if you could share your (encouraging :) thoughts with me. cheers! (btw I'm based in Austria)

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• The PATRIOT Act and how it relates to the Internet

  The subject of the Internet and anonymity is a very sticky situation for me because I primarily develop web applications for a living.  As a part of my job I have to track users as they enter, navigate and leave specific applications. The level of tracking depends on where the user goes within a website.  The basic information that I capture includes the user’s IP address, browser type, operating system, the date/time they entered the site and the URL from which the user was referred to the website. In addition to the custom logging that is placed on the website, web servers also have methods of logging built-in as well. Web server logging allows companies to have a central repository to store all user activity across the entire server. Not to mention that they can also create a central repository that allows multiple servers to store log files in one location. This allows users to be tracked across multiple servers as they browse website located on a specific collection of servers that host multiple websites. All this being said there are methods to attempt to protect your privacy by using proxy servers and increasing your browser security levels, but that will only limit the amount of logging not eliminate it. I have to agree with Traynor when he states that the PATRIOT Act eviscerates the constitutional protections of anonymous communication on the Internet. Therefore, given the recent passage and implementation of the PATRIOT Act, the constitutional guarantees of the right to anonymity have been severely compromised. I think that the PATRIOT Act is a direct violation of our first amendment rights because it allows for the government to directly monitor any and all activity on the internet including communications, usage, and transactions that can occur.  This opens the door to scrutiny and persecution of individuals who are not in line with the government’s beliefs and actions. If England had this type of monitoring capabilities during the revolutionary war, I believe it would have been almost impossible to succeed from England.

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• Silverlight Cream for November 27, 2011 -- #1176

  - by Dave Campbell

  In this Issue: Matt Eland, Parag Joshi, Jerrel Blankenship, and Joost van Schaik. Above the Fold: WP7: "Safe event detachment base class for Windows Phone 7 behaviors" Joost van Schaik Shoutouts: Michael Palermo's latest Desert Mountain Developers is up Michael Washington's latest Visual Studio #LightSwitch Daily is up From SilverlightCream.com:31 Days of Mango | Day #22: App ConnectMatt Eland takes the reigns of Jeff's blog for Day 22 and is talking about App Connect... App Connect allows apps to be listed on Quick Cards relative to an app's subject matter, and Quick Cards are items that appear in searches to let users find out more info... check out the blog post if you're not familiar with this31 Days of Mango | Day #21: SocketsJeff's Day 21 is written by Parag Joshi, and is on sockets... and is building a WP7 app for posting restaurant orders to a Silverlight OOB app running on a host machine... good sized tutorial and discussion, plus a project to download and play with31 Days of Mango | Day #20: Creating RingtonesJerrel Blankenship has Day 20 for Jeff Blankenburg's 31 Days of Mango and is discussing Ringtones... how to create and save a custom ringtone for your userSafe event detachment base class for Windows Phone 7 behaviorsJoost van Schaik revisits his Safe Event Detachment pattern for WP7 and built a base class to take care of the initialization involved to be kind to us, the developers... code includedStay in the 'Light!Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCreamJoin me @ SilverlightCream | Phoenix Silverlight User GroupTechnorati Tags:Silverlight    Silverlight 3    Silverlight 4    Windows PhoneMIX10

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• Are there any actual case studies on rewrites of software success/failure rates?

  - by James Drinkard

  I've seen multiple posts about rewrites of applications being bad, peoples experiences about it here on Programmers, and an article I've ready by Joel Splosky on the subject, but no hard evidence of case studies. Other than the two examples Joel gave and some other posts here, what do you do with a bad codebase and how do you decide what to do with it based on real studies? For the case in point, there are two clients I know of that both have old legacy code. They keep limping along with it because as one of them found out, a rewrite was a disaster, it was expensive and didn't really work to improve the code much. That customer has some very complicated business logic as the rewriters quickly found out. In both cases, these are mission critical applications that brings in a lot of revenue for the company. The one that attempted the rewrite felt that they would hit a brick wall at some point if the legacy software didn't get upgraded at some point in the future. To me, that kind of risk warrants research and analysis to ensure a successful path. My question is have there been actual case studies that have investigated this? I wouldn't want to attempt a major rewrite without knowing some best practices, pitfalls, and successes based on actual studies. Aftermath: okay, I was wrong, I did find one article: Rewrite or Reuse. They did a study on a Cobol app that was converted to Java.

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• Programming and Ubiquitous Language (DDD) in a non-English domain

  - by Sandor Drieënhuizen

  I know there are some questions already here that are closely related to this subject but none of them take Ubquitous Language as the starting point so I think that justifies this question. For those who don't know: Ubiquitous Language is the concept of defining a (both spoken and written) language that is equally used across developers and domain experts to avoid inconsistencies and miscommunication due to translation problems and misunderstanding. You will see the same terminology show up in code, conversations between any team member, functional specs and whatnot. So, what I was wondering about is how to deal with Ubiquitous Language in non-English domains. Personally, I strongly favor writing programming code in English completely, including comments but ofcourse excluding constants and resources. However, in a non-English domain, I'm forced to make a decision either to: Write code reflecting the Ubiquitous Language in the natural language of the domain. Translate the Ubiquitous Language to English and stop communicating in the natural language of the domain. Define a table that defines how the Ubiquitous Language translates to English. Here are some of my thoughts based on these options: 1) I have a strong aversion against mixed-language code, that is coding using type/member/variable names etc. that are non-English. Most programming languages 'breathe' English to a large extent and most of the technical literature, design pattern names etc. are in English as well. Therefore, in most cases there's just no way of writing code entirely in a non-English language so you end up with a mixed languages. 2) This will force the domain experts to start thinking and talking in the English equivalent of the UL, something that will probably not come naturally to them and therefore hinders communication significantly. 3) In this case, the developers communicate with the domain experts in their native language while the developers communicate with each other in English and most importantly, they write code using the English translation of the UL. I'm sure I don't want to go for the first option and I think option 3 is much better than option 2. What do you think? Am I missing other options?

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