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  • Atomic swap in GNU C++

    - by Steve
    I want to verify that my understanding is correct. This kind of thing is tricky so I'm almost sure I am missing something. I have a program consisting of a real-time thread and a non-real-time thread. I want the non-RT thread to be able to swap a pointer to memory that is used by the RT thread. From the docs, my understanding is that this can be accomplished in g++ with: // global Data *rt_data; Data *swap_data(Data *new_data) { #ifdef __GNUC__ // Atomic pointer swap. Data *old_d = __sync_lock_test_and_set(&rt_data, new_data); #else // Non-atomic, cross your fingers. Data *old_d = rt_data; rt_data = new_data; #endif return old_d; } This is the only place in the program (other than initial setup) where rt_data is modified. When rt_data is used in the real-time context, it is copied to a local pointer. For old_d, later on when it is sure that the old memory is not used, it will be freed in the non-RT thread. Is this correct? Do I need volatile anywhere? Are there other synchronization primitives I should be calling? By the way I am doing this in C++, although I'm interested in whether the answer differs for C. Thanks ahead of time.

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  • Is it possible for two VS2008 C# class library projects to share a single namespace?

    - by jeah
    I am trying to share a common namespace between two projects in a single solution. The projects are "Blueprint" and "Repositories". Blueprint contains Interfaces for the entire application and serves as a reference for the application structure. In the Blueprint project, I have an interface with the following declaration: namespace Application.Repositories{ public interface IRepository{ IEntity Get(Guid id); } } In the Repositories project I have a class the following class: namespace Application.Repositories{ public class STDRepository: IRepository { STD Get(Guid id){ return new SkankyExGirlfriendDataContext() .FirstOrDefault<STD>(x=>x.DiseaseId == id); } } } However, this does not work. The Repositories project has a reference to the Blueprint project. I receive a VS error: "The type or namespace name 'IRepository' could not be found (are you missing a using directive or an assembly reference?) - Normally, this is easy to fix but adding a using statement doesn't make sense since they have the same namespace. I tried it anyway and it didn't work. The reference has been added, and without the line of code referencing that interface, both projects compile successfully. I am lost here. I have searched all over and have found nothing, so I am assuming that there is something fundamentally wrong with what I'm doing ... but I don't know what it is. So, I would appreciate some explanation or guidance as to how to fix this problem. I hope you guys can help. Note: The reason I want to do it this way and keep the interfaces under the same namespace is because I want a solid project to keep all the interfaces in, in order to have a reference for the full architecture of the application. I have considered work arounds, such as putting all of the interfaces in the Blueprint.Application namespace instead of the application namespace. However, that would require me to write the using statement on virtually every page in the application...and my fingers get tired. Thanks again guys...

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  • Mysql random rows

    - by n00b
    please read the whole question... 90% of you dont seem to do that and some of you only read the title obviously... and if you dont know the solution, dont answer - i wont have to downvote you -.-'' im entertaining the idea of getting random rows directly from mysql. what i found was SELECT * FROM tablename WHERE somefield='something' ORDER BY RAND() LIMIT 5 but even i see how slow that would be.. is the only way to do this doing something like SELECT * FROM tablename WHERE somefield='something' LIMIT RAND(aincrementvalue-5), 1 5 times? or is there a way that i with my little knowlege of databases cant come up with ? (no i dont want random indexes. i hate the idea of them...) @commenters - please first look, then think, then look again, think again and then post. i wont point fingers but i dislike stupid comments and why i think random indexes are a nasty hack ? it doesnt give you random results. it gives you x results from a random index in a predefined order its like a gapless id only in the wrong order if you fetch by 1 row and get true randomness you fall back to my method but with an additional junk field finally the reason the field exists is only to serve as a helper to something that can be done without it with almost same performance (but the quality (randomness) is better), so it is a nasty hack ;) i solved it, look @ my answer... if you think its incorrect please tell me :)

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  • Parse large XML file w/ script or use BioPython API ?

    - by jeremy04
    Hey guys this is my first question on here. I'm trying to make a local copy of the UniprotKB in SQL. The UniprotKB is 2.1GB, and it comes in XML and a special text format used by SwissProt Here are my options: 1) Use a SAX parser (XML) - I chose Ruby, and Nokogiri. I started writing the parser, but my initial reaction: how would I map the XML schema to the SAX parser? 2) BioPython - I already have BioSQL/Biopython installed, which literally created my SQL schema for me, and I was able to successfully insert one SwissProt/Uniprot txt file into the database. I'm running it right now (crosses fingers) on the entire 2.1gb. Here is the code I'm running: from Bio import SeqIO from BioSQL import BioSeqDatabase from Bio import SwissProt server = BioSeqDatabase.open_database(driver = "MySQLdb", user = "root", passwd = "", host="localhost", db = "bioseqdb") db = server["uniprot"] iterator = SeqIO.parse(open("/path/to/uniprot_sprot.dat", "r"), "swiss") db.load(iterator) server.commit() Edit: it's now crashing because the transactions are getting locked (since the tables are Innodb) Error Number: 1205 Lock wait timeout exceeded; try restarting transaction. I'm using MySQL version: 5.1.43 Should I switch my database to Postgrelsql ?

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  • Closing Windows Forms on a Touchscreen

    - by drharris
    Our clients have fat fingers, and so do we. We take touchscreen netbooks apart to insert them into our custom hardware, and I write a software interface that shows up on the touchscreen. The problem is that it has about a 3/4" bezel over the screen, which means hitting that little red "X" becomes a challenge, especially considering reduced capacitive ability on the edges and corners. Is there a way to make this standard close button larger? Of course in the application I can always make really nice 80x80 buttons that are perfectly usable, but there seems to be no way to override the default frame of the form. We have tried enabling Large Fonts and all the built-in accessibility features, but nothing seems to make it large enough to hit successfully. Simply adding a toolbar button is also not much of an option. We prefer to utilize the standard look and feel of a normal Windows application. Alternatively, should we be looking at making some sort of "kiosk mode" where we simply go fullscreen and do nothing involving the taskbar or title bar? How difficult is this to accomplish, if so?

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  • Connection string problems on shared hosting with sql server 2005 express

    - by dagogo
    hi i have problem connecting to my db on a shared hosting, my host provider says they deployed sql 2005 express on their database and i prepared my connection string as follows to take advantage of sql express. \ the data source nae i used originally was ./SQLExpress but my host provider asked that i change it to local host, although with the former it didnt connect, but still with the change as indicated above the error still comes up on access to my default page. the error is as follows; Server Error in '/' Application. Invalid value for key 'attachdbfilename'. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.ArgumentException: Invalid value for key 'attachdbfilename'. Source Error: Line 120: Public Function GetID(ByVal sLgaName As String) As Integer Line 121: Dim q As String = "Select PLID " & "From LGA " & "Where LGAName = " & "'" & sLgaName & "'" Line 122: Dim cn As New SqlConnection(Me.ConnectionString) Line 123: Dim cmd As New SqlCommand(q, cn) Line 124: ive read up a lot on the web and googled ma fingers numb on this, i have a deadline to deliver this project and having successfully built the app it frustrating for this to happen. pls help me.

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  • Where / how does Apache generate the HTML code used in the default directory listing?

    - by Ellen B
    I am looking to modify the HTML that apache generates for its default directory listing. I already know how to create a HEADER.html file that gets included for every directory listing. I am attempting to change the actual html that Apache generates for the file listing itself; right now my MacOS apache generates this for example: <table><tr><th><img src="/icons/blank.gif" alt="[ICO]"></th><th><a href="?C=N;O=D">Name</a></th><th><a href="?C=M;O=A">Last modified</a></th><th><a href="?C=S;O=A">Size</a></th><th><a href="?C=D;O=A">Description</a></th></tr><tr><th colspan="5"><hr></th></tr> <tr><td valign="top"><img src="/icons/folder.gif" alt="[DIR]"></td><td><a href="ios-prototype/">ios-prototype/</a> </td><td align="right">07-Dec-2012 16:47 </td><td align="right"> - </td><td>&nbsp;</td></tr> <tr><td valign="top"><img src="/icons/folder.gif" alt="[DIR]"></td><td><a href="magneto-git/">magneto-git/</a> </td><td align="right">07-Dec-2012 16:46 </td><td align="right"> - </td><td>&nbsp;</td></tr> <tr><th colspan="5"><hr></th></tr> </table> I want a different HTML structure (like, say, an OL) generated when my server spits back directory listings. (FYI I'm doing a bunch of mobile browser prototyping with my local webserver & need to make it not totally horrible to browse with fingers to the right test directory — the table structure sucks, and while I can mod a lot of it with CSS it's still going to be ganky.)

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  • System Requirements of a write-heavy applications serving hundreds of requests per second

    - by Rolando Cruz
    NOTE: I am a self-taught PHP developer who has little to none experience managing web and database servers. I am about to write a web-based attendance system for a very large userbase. I expect around 1000 to 1500 users logged-in at the same time making at least 1 request every 10 seconds or so for a span of 30 minutes a day, 3 times a week. So it's more or less 100 requests per second, or at the very worst 1000 requests in a second (average of 16 concurrent requests? But it could be higher given the short timeframe that users will make these requests. crosses fingers to avoid 100 concurrent requests). I expect two types of transactions, a local (not referring to a local network) and a foreign transaction. local transactions basically download userdata in their locality and cache it for 1 - 2 weeks. Attendance equests will probably be two numeric strings only: userid and eventid. foreign transactions are for attendance of those do not belong in the current locality. This will pass in the following data instead: (numeric) locality_id, (string) full_name. Both requests are done in Ajax so no HTML data included, only JSON. Both type of requests expect at the very least a single numeric response from the server. I think there will be a 50-50 split on the frequency of local and foreign transactions, but there's only a few bytes of difference anyways in the sizes of these transactions. As of this moment the userid may only reach 6 digits and eventid are 4 to 5-digit integers too. I expect my users table to have at least 400k rows, and the event table to have as many as 10k rows, a locality table with at least 1500 rows, and my main attendance table to increase by 400k rows (based on the number of users in the users table) a day for 3 days a week (1.2M rows a week). For me, this sounds big. But is this really that big? Or can this be handled by a single server (not sure about the server specs yet since I'll probably avail of a VPS from ServInt or others)? I tried to read on multiple server setups Heatbeat, DRBD, master-slave setups. But I wonder if they're really necessary. the users table will add around 500 1k rows a week. If this can't be handled by a single server, then if I am to choose a MySQL replication topology, what would be the best setup for this case? Sorry, if I sound vague or the question is too wide. I just don't know what to ask or what do you want to know at this point.

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  • Anyone else experiencing high rates of Linux server crashes during a leap second day?

    - by Bron Gondwana
    POSTMORTEM Anticlimax: only thing that died was my VPN (openvpn) link to the cluster, so there was an exciting few seconds while it re-established. Everything else was fine. Starting back ntp everywhere. If you look at Marco's blog at http://my.opera.com/marcomarongiu/blog/2012/06/01/an-humble-attempt-to-work-around-the-leap-second - he has a solution for phasing the time change over 24 hours using ntpd -x to avoid the 1 second skip. Give that a go if it matters to you. For the systems I run, the jump isn't a problem. Just today, Sat June 30th - starting soon after the start of the day GMT. We've had a handful of blades in different datacentres as managed by different teams all go dark - not responding to pings, screen blank. They're all running Debian Squeeze - with everything from stock kernel to custom 3.2.21 builds. Most are Dell M610 blades, but I've also just lost a Dell R510 and other departments have lost machines from other vendors too. There was also an older IBM x3550 which crashed and which I thought might be unrelated, but now I'm wondering. The one crash which I did get a screen dump from said: [3161000.864001] BUG: spinlock lockup on CPU#1, ntpd/3358 [3161000.864001] lock: ffff88083fc0d740, .magic: dead4ead, .owner: imapd/24737, .owner_cpu: 0 Unfortunately the blades all supposedly had kdump configured, but they died so hard that kdump didn't trigger - and they had console blanking turned on. I've disabled console blanking now, so fingers crossed I'll have more information after the next crash. Just want to know if it's a common thread or "just us". It's really odd that they're different units in different datacentres bought at different times and run by different admins (I run the FastMail.FM ones)... and now even different vendor hardware. Most of the machines which crashed had been up for weeks/months and were running 3.1 or 3.2 series kernels. The most recent crash was a machine which had only been up about 6 hours running 3.2.21. THE WORKAROUND Ok people, here's how I worked around it. disabled ntp: /etc/init.d/ntp stop created http://linux.brong.fastmail.fm/2012-06-30/fixtime.pl (code stolen from Marco, see blog posts in comments) ran fixtime.pl without an argument to see that there was a leap second set ran fixtime.pl with an argument to remove the leap second NOTE: depends on adjtimex. I've put a copy of the squeeze adjtimex binary at http://linux.brong.fastmail.fm/2012-06-30/adjtimex - it will run without dependencies on a squeeze 64 bit system. If you put it in the same directory as fixtime.pl, it will be used if the system one isn't present. Obviously if you don't have squeeze 64 bit... find your own. I'm going to start ntp again tomorrow. As an anonymous user suggested - an alternative to running adjtimex is to just set the time yourself, which will presumably also clear the leapsecond counter.

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  • Laptop turning off when fan is spinning hard

    - by Ieyasu Sawada
    My laptop seems to have reach its lifespan. Its an Acer laptop so I guess that's normal. But I'd like to hear your opinions about this. My laptop is only 2 years old. I haven't heard the fan spinning like crazy not until these past 5 months. What I did: Hoping that its just the applications that I have installed that's consume the life of my laptop from the background. I used PC Decrapifier to uninstall some of the things that I don't need. Reformatted my computer but only the primary partition since my files are on the second partition. Bought a cooling pad. None of these works. I noticed the fan spins so hard when: I have a lot of browser tabs open. Full screen mode a flash video that I'm viewing online. Using VLC to watch encoded videos. There's this thing called minicoder http://sourceforge.net/projects/minicoder/ to reduce the size of videos without affecting much of the quality. I'm suspecting that it needs additional software(to make life easier for the hardware) even though the video is working fine in VLC. VLC consumes about 300,000K and above(as seen from task manager) while watching videos (.mkv). The problem: Laptop suddenly turns off when the fan spins like crazy for about 20 minutes. I'm always checking to see if its already too hot(using my fingers to feel the side of the laptop) but its not so I continued watching and then poof! computer turns off. Laptop won't turn on immediately when I turn it on after it turning off by itself. The light for the power goes on but its turns off immediately. I have to wait for about 10-20 seconds before it boots up without problems. So how do I go about this? Is this just normal for Acer laptops after about 2 years of heavy usage (8-12 hours a day)? My usage is heavy but I normally only have a text-editor(sublime) and browser open(chrome). Here's what I got from HW monitor:

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  • Computer freezes +/- 30 seconds, suspicion on SSD

    - by Robert vE
    My computer freezes for about 30 seconds, this happens occasionally. When it happens I can still move the mouse, sometimes even alternate between tabs in google chrome. If I try to open windows explorer nothing happens. Also chrome rapports "waiting for cache". It also happens in starcraft II, during which the sounds loops. I have made a Trace as this topic describes: How do I troubleshoot a Windows 7 freeze or slowness? Trace: https://docs.google.com/open?id=0B_VkKdh535p6NklhSDdBLURUMnc I have looked at it, but I couldn't figure it out. My system specs are: AMD Athlon X4 651 Asus Ati HD6670 ADATA SSD sp900 Asus f1a55 mainboard 4 GB crucial 1333 ram 500 watt atx ps I'm running Windows 7, fully updated. Any help is much appreciated. Update: I tried something before your reply that may have helped the problem. I don't know for sure if it has, it's too soon to tell. A bit of history first. I had problems installing win7 on my ssd from the start. In IDE mode it worked, but I had the same problems as above. AHCI was a total fail, with it on before install as well as turning it on after install (including tweaking register). I didn't bother installing the AMD chipset/AHCI as it was reported to have no TRIM function and thus make problems worse. Eventually I did install the AMD SMbus driver as the stability issues were driving me crazy. It worked, no more issues, until I installed some extra drivers and software. Audio/LAN/ASUS suite, I don’t see the relation, but somehow it screwed up my system again. As a last effort I posted here on this site. After which the thought occurred to me turn on AHCI again as by now I had all necessary drivers installed anyway. (plus all windows updates downloaded/installed in the meantime) I did and stability didn’t seem great the first few reboots, but eventually everything seemed to work great. I tried to play starcraft II – an almost guaranteed freeze before – and I had no problems. I’m basically crossing my fingers and hope the problem is gone for good. I still think it has something to do with my SSD. In my research into the problem I noticed a lot of these issues with sandforce 2281 firmware, the exact same firmware I have. People reported the same problem that I had, freezes. Additionally they reported that during a freeze the hdd light stayed on, I noticed after I read this that this happened with my computer as well. None of this is conclusive evidence that my SSD is really to fault, but it is suspicious. And why turning on AHCI would fix it I don’t know. Thank you Tom for taking a look, if the problem returns I will certainly do what you advised.

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  • XNA Notes 009

    - by George Clingerman
    This past week the MVPs (myself included) were on Microsoft campus for the MVP summit. So I apologize in advance if you did something cool or heard of something cool happening with XNA and XBLIGs and it’s not in my notes. I did my best to stay on top of things, but honestly this community is fast and furious with what it’s doing and creating. I really can’t keep up and that’s fantastic! But here’s what I *did* notice while I was there on Microsoft Campus (and I did make sure to point out to the XNA team several of these very cool happenings while I had their ears). Time Critical XNA News: The XNA team wants you to know that Dream Build Play registration is now open! http://blogs.msdn.com/b/xna/archive/2011/02/28/registration-now-open-for-dream-build-play-2011-challenge.aspx Join the XNA-UK create on March 24, 2011 at the Microsoft Tech Days Conference http://xna-uk.net/blogs/darkgenesis/archive/2011/02/27/join-the-xna-uk-crew-at-the-microsoft-tech-days-conference-on-24th-march-2011.aspx XNA Team: Shawn Hargreaves shares one of the coolest things that’s happened in the XNA community http://blogs.msdn.com/b/shawnhar/archive/2011/03/02/xbox-indies-pivot-view.aspx Nick Gravelyn continues his unique marketing/work prioritization strategy as he tries to get to 5,000 Pixel Man users before he makes Pixel Man 2 (and he’s almost there!) http://nickgravelyn.com/pixelman2/ XNA MVPs: A lot of the XNA MVPs were at the Microsoft MVP Summit 2011. Due to NDAs, most things can’t be shared, but I’m sure if you’re curious you could ask them about the general vibe and feeling they got from the team and the future of XNA/XBLIG and more. Catalin Zima and team release the free WP7 game Chickens Can Dream http://twitter.com/CatalinZima/statuses/41174062923390976 http://www.amusedsloth.com/2011/02/chickens-can-dream-is-live/ Charles Humphrey (NemoKrad) posts his March talk source and PowerPoint http://xna-uk.net/blogs/randomchaos/archive/2011/03/04/march-2011-talk-post-processing-framework.aspx XNA Developers: Michael B. McLaughlin posts about ANTS Memory Profile and creates a CheckMemoryAllocationGame sample (extremely useful if you’re looking to see how much memory some operation allocates!) http://geekswithblogs.net/mikebmcl/archive/2011/02/28/ants-memory-profiler-7.0-review.aspx http://geekswithblogs.net/mikebmcl/archive/2011/03/01/checkmemoryallocationgame-sample.aspx Andy Schatz (2009 IGF winner for Monaco) talking XNA at GDC 2011 http://www.gamasutra.com/view/news/33313/GDC_2011_Andy_Schatz_Ill_Make_My_Last_Game_When_I_Die.php Xbox LIVE Indie Games (XBLIG): Clover: A Curious Tale by BinaryTweed is coming as a Deal of the Week during St. Patricks Day http://majornelson.com/archive/2011/03/03/comingsoontothexboxlivemarketplacemarchthird.aspx Ska Studios away at GDC but still very post happy as always http://www.ska-studios.com/2011/03/02/swamped-picture-pack/ http://www.ska-studios.com/2011/02/28/the-february-showcase/ http://www.ska-studios.com/2011/02/25/good-morning-gato-51-smelling-the-roses/ Just Press Start interviews Matthew Mikuszewski of Darkwind Media about Blocks Indie http://justpressstart.net/?p=516 Gamergeddon Xbox Indie Game Round Up - February 27th http://www.gamergeddon.com/2011/02/27/xbox-indie-game-round-up-february-27th/ http://www.gamergeddon.com/category/xbox-360/indie-games/ GameMarx does a round up of all the Xbox Live Indie Game podcasts that are currently available http://www.gamemarx.com/news/2011/02/27/xbox-live-indie-game-podcasts.aspx GameMarx episode 11 http://www.gamemarx.com/video/the-show/26/ep-11-february-25-2011.aspx In perhaps what I feel is the most exciting news I’ve heard all week, Michael C. Neel (ViNull of GameMarx fame) re-launch XboxIndies.com! http://www.gamemarx.com/news/2011/03/01/the-relaunch-of-xboxindies-com.aspx http://xboxindies.com/ Armless Octopus shares a little of what they heard from Luke Schneider of Radiangames during his GDC 2011 talk http://www.armlessoctopus.com/2011/03/02/gdc-2011-luke-schneider-offers-insight-into-radiangames-success/ VVGindiecast Episode 1 with guests Derek Strickland(Mr_Deeke), Kris Steele(Kriswd40 from FunInfused Games) and Dave Voyles(From armlessoctopus.com) http://vvgtv.com/2011/02/25/vvgindiecast-xblig-podcast/ If you’re doing Xbox LIVE Indie Game Reviews get in touch with XboxIndies.com to get into their aggregated feed http://forums.create.msdn.com/forums/p/76931/467189.aspx#467189 B.U.T.T.O.N and Flotilla represented XNA very well at the Independent Games Festival (are there any more games entered that were created using XNA? Stand up and be heard!) http://www.igf.com/php-bin/entry2011.php?id=374 Armless Ocotopus interview at GDC 2011 with Soulcaster creator Ian Stocker http://www.armlessoctopus.com/2011/03/04/gdc-2011-interview-with-soulcaster-creator-ian-stocker/ MommysBestGames gets a nod in the DarkBasic newsletter where it features the Explosionade Editor (just do a search for Explosionade to get to the interesting bits!) http://www.thegamecreators.com/pages/newsletters/newsletter_issue_98.html You may be hearing the cries of FortressCraft (coming soon to XBLIG) being so wrong for stealing the idea from MineCraft. But did you know the the game MineCraft started from was an XNA game called Infiniminer? XNA is getting it’s fingers into EVERYTHING! http://www.minecraftwiki.net/wiki/Infiniminer XNA Development: TorqueX is NOT dead thanks to the tremendous efforts of the XNA Community working on the CEV (special thanks to @PinoEire for all his hard work on making that happen!) http://www.garagegames.com/community/blogs/view/20878 http://torquecev.com/ Dave Henry has posted XNA 3.x adding platformer start kit to the network game state management on his new site http://twitter.com/#!/mort8088/status/43407715908853760 http://mort8088.com/2011/03/03/xna-3-x-adding-platformer-starter-kit-to-network-game-state-management/ Mark Bamford releases XNAViewer 4.0, great for running XNA games inside of a Windows Form (for building level editors, etc.) http://twitter.com/#!/xzodia04/status/43466830412660736 http://xnaviewer.codeplex.com/ Unit testing an XNA game with Resharper and NUnit http://smnbss.wordpress.com/2011/02/28/planetx-unit-testing-an-xna-game-with-resharper-and-nunit-wp7-xbox-xna/ XNA for Silverlight developers: Part 5 - Input (touch + gestures) http://ht.ly/1bxwUE Mike McLaughlin shares a link he stumbled across for those looking to understand vector and matrix math http://twitter.com/#!/mikebmcl/status/42587074725036032 http://chortle.ccsu.edu/VectorLessons/vectorIndex.html DigitalRune Resources Pooling in XNA (Part 1) http://www.digitalrune.com/Support/Blog/tabid/719/EntryId/84/DigitalRune-Helper-Library-Resource-Pooling-in-XNA-Part-1.aspx JohnK “bobthecbuilder” released a new SunBurn Update that lowers the requirements for Windows Games http://twitter.com/#!/bobthecbuilder/status/43457306578522112 http://www.synapsegaming.com/blogs/johnk/archive/2011/03/03/sunburn-update-windows-redistributable.aspx Quick update on the Indiefreaks Game Framework v0.4 development status http://indiefreaks.com/2011/03/04/quick-update-on-igf-v0-4-development/

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  • Installing Visual Studio Team Foundation Server Service Pack 1

    - by Martin Hinshelwood
    As has become customary when the product team releases a new patch, SP or version I like to document the install. Although I had no errors on my main computer, my netbook did have problems. Although I am not ready to call it a Service Pack problem just yet! Update 2011-03-10 – Running the Team Foundation Server 2010 Service Pack 1 install a second time worked As per Brian's post I am installing the Team Foundation Server Service Pack first and indeed as this is a single server local deployment I need to install both. If I only install one it will leave the other product broken. This however does not affect you if you are running Visual Studio and Team Foundation Server on separate computers as is normal in a production deployment. Main workhorse I will be installing the service pack first on my main computer as I want to actually use it here. Figure: My main workhorse I will also be installing this on my netbook which is obviously of significantly lower spec, but I will do that one after. Although, as always I had my fingers crossed, I was not really worried. Figure: KB2182621 Compared to Visual Studio there are not really a lot of components to update. Figure: TFS 2010 and SQL 2008 are the main things to update There is no “web” installer for the Team Foundation Server 2010 Service Pack, but that is ok as most people will be installing it on a production server and will want to have everything local. I would have liked a Web installer, but the added complexity for the product team is not work the capability for a 500mb patch. Figure: There is currently no way to roll SP1 and RTM together Figure: No problems with the file verification, phew Figure: Although the install took a while, it progressed smoothly   Figure: I always like a success screen Well, as far as the install is concerned everything is OK, but what about TFS? Can I still connect and can I still administer it. Figure: Service Pack 1 is reflected correctly in the Administration Console I am confident that there are no major problems with TFS on my system and that it has been updated to SP1. I can do all of the things that I used before with ease, and with the new features detailed by Brian I think I will be happy. Netbook The great god Murphy has stuck, and my poor wee laptop spat the Team Foundation Server 2010 Service Pack 1 out so fast it hit me on the back of the head. That will teach me for not looking… Figure: “Installation did not succeed” I am pretty sure should not be all caps! On examining the file I found that everything worked, except the actual Team Foundation Server 2010 serving step. Action: System Requirement Checks... Action complete Action: Downloading and/or Verifying Items c:\757fe6efe9f065130d4838081911\VS10-KB2182621.msp: Verifying signature for VS10-KB2182621.msp c:\757fe6efe9f065130d4838081911\VS10-KB2182621.msp Signature verified successfully for VS10-KB2182621.msp c:\757fe6efe9f065130d4838081911\DACFramework_enu.msi: Verifying signature for DACFramework_enu.msi c:\757fe6efe9f065130d4838081911\DACFramework_enu.msi Signature verified successfully for DACFramework_enu.msi c:\757fe6efe9f065130d4838081911\DACProjectSystemSetup_enu.msi: Verifying signature for DACProjectSystemSetup_enu.msi Exists: evaluating Exists evaluated to false c:\757fe6efe9f065130d4838081911\DACProjectSystemSetup_enu.msi Signature verified successfully for DACProjectSystemSetup_enu.msi c:\757fe6efe9f065130d4838081911\TSqlLanguageService_enu.msi: Verifying signature for TSqlLanguageService_enu.msi c:\757fe6efe9f065130d4838081911\TSqlLanguageService_enu.msi Signature verified successfully for TSqlLanguageService_enu.msi c:\757fe6efe9f065130d4838081911\SharedManagementObjects_x86_enu.msi: Verifying signature for SharedManagementObjects_x86_enu.msi c:\757fe6efe9f065130d4838081911\SharedManagementObjects_x86_enu.msi Signature verified successfully for SharedManagementObjects_x86_enu.msi c:\757fe6efe9f065130d4838081911\SharedManagementObjects_amd64_enu.msi: Verifying signature for SharedManagementObjects_amd64_enu.msi c:\757fe6efe9f065130d4838081911\SharedManagementObjects_amd64_enu.msi Signature verified successfully for SharedManagementObjects_amd64_enu.msi c:\757fe6efe9f065130d4838081911\SQLSysClrTypes_x86_enu.msi: Verifying signature for SQLSysClrTypes_x86_enu.msi c:\757fe6efe9f065130d4838081911\SQLSysClrTypes_x86_enu.msi Signature verified successfully for SQLSysClrTypes_x86_enu.msi c:\757fe6efe9f065130d4838081911\SQLSysClrTypes_amd64_enu.msi: Verifying signature for SQLSysClrTypes_amd64_enu.msi c:\757fe6efe9f065130d4838081911\SQLSysClrTypes_amd64_enu.msi Signature verified successfully for SQLSysClrTypes_amd64_enu.msi c:\757fe6efe9f065130d4838081911\vcruntime\Vc_runtime_x86.cab: Verifying signature for vcruntime\Vc_runtime_x86.cab c:\757fe6efe9f065130d4838081911\vcruntime\Vc_runtime_x86.cab Signature verified successfully for vcruntime\Vc_runtime_x86.cab c:\757fe6efe9f065130d4838081911\vcruntime\Vc_runtime_x86.msi: Verifying signature for vcruntime\Vc_runtime_x86.msi c:\757fe6efe9f065130d4838081911\vcruntime\Vc_runtime_x86.msi Signature verified successfully for vcruntime\Vc_runtime_x86.msi c:\757fe6efe9f065130d4838081911\SetupUtility.exe: Verifying signature for SetupUtility.exe c:\757fe6efe9f065130d4838081911\SetupUtility.exe Signature verified successfully for SetupUtility.exe c:\757fe6efe9f065130d4838081911\vcruntime\Vc_runtime_x64.cab: Verifying signature for vcruntime\Vc_runtime_x64.cab c:\757fe6efe9f065130d4838081911\vcruntime\Vc_runtime_x64.cab Signature verified successfully for vcruntime\Vc_runtime_x64.cab c:\757fe6efe9f065130d4838081911\vcruntime\Vc_runtime_x64.msi: Verifying signature for vcruntime\Vc_runtime_x64.msi c:\757fe6efe9f065130d4838081911\vcruntime\Vc_runtime_x64.msi Signature verified successfully for vcruntime\Vc_runtime_x64.msi c:\757fe6efe9f065130d4838081911\NDP40-KB2468871.exe: Verifying signature for NDP40-KB2468871.exe c:\757fe6efe9f065130d4838081911\NDP40-KB2468871.exe Signature verified successfully for NDP40-KB2468871.exe Action complete Action: Performing actions on all Items Entering Function: BaseMspInstallerT >::PerformAction Action: Performing Install on MSP: c:\757fe6efe9f065130d4838081911\VS10-KB2182621.msp targetting Product: Microsoft Team Foundation Server 2010 - ENU Returning IDOK. INSTALLMESSAGE_ERROR [Error 1935.An error occurred during the installation of assembly 'Microsoft.TeamFoundation.WebAccess.WorkItemTracking,version="10.0.0.0",publicKeyToken="b03f5f7f11d50a3a",processorArchitecture="MSIL",fileVersion="10.0.40219.1",culture="neutral"'. Please refer to Help and Support for more information. HRESULT: 0x80070005. ] Returning IDOK. INSTALLMESSAGE_ERROR [Error 1712.One or more of the files required to restore your computer to its previous state could not be found. Restoration will not be possible.] Patch (c:\757fe6efe9f065130d4838081911\VS10-KB2182621.msp) Install failed on product (Microsoft Team Foundation Server 2010 - ENU). Msi Log: MSI returned 0x643 Entering Function: MspInstallerT >::Rollback Action Rollback changes PerformMsiOperation returned 0x643 PerformMsiOperation returned 0x643 OnFailureBehavior for this item is to Rollback. Action complete Final Result: Installation failed with error code: (0x80070643), "Fatal error during installation. " (Elapsed time: 0 00:14:09). Figure: Error log for Team Foundation Server 2010 install shows a failure As there is really no information in this log as to why the installation failed so I checked the event log on that box. Figure: There are hundreds of errors and it actually looks like there are more problems than a failed Service Pack I am going to just run it again and see if it was because the netbook was slow to catch on to the update. Hears hoping, but even if it fails, I would question the installation of Windows (PDC laptop original install) before I question the Service Pack Figure: Second run through was successful I don’t know if the laptop was just slow, or what… Did you get this error? If you did I will push this to the product team as a problem, but unless more people have this sort of error, I will just look to write this off as a corrupted install of Windows and reinstall.

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  • Test-Drive ASP.NET MVC Review

    - by Ben Griswold
    A few years back I started dallying with test-driven development, but I never fully committed to the practice. This wasn’t because I didn’t believe in the value of TDD; it was more a matter of not completely understanding how to incorporate “test first” into my everyday development. Back in my web forms days, I could point fingers at the framework for my ignorance and laziness. After all, web forms weren’t exactly designed for testability so who could blame me for not embracing TDD in those conditions, right? But when I switched to ASP.NET MVC and quickly found myself fresh out of excuses and it became instantly clear that it was time to get my head around red-green-refactor once and for all or I would regretfully miss out on one of the biggest selling points the new framework had to offer. I have previously written about how I learned ASP.NET MVC. It was primarily hands on learning but I did read a couple of ASP.NET MVC books along the way. The books I read dedicated a chapter or two to TDD and they certainly addressed the benefits of TDD and how MVC was designed with testability in mind, but TDD was merely an afterthought compared to, well, teaching one how to code the model, view and controller. This approach made some sense, and I learned a bunch about MVC from those books, but when it came to TDD the books were just a teaser and an opportunity missed.  But then I got lucky – Jonathan McCracken contacted me and asked if I’d review his book, Test-Drive ASP.NET MVC, and it was just what I needed to get over the TDD hump. As the title suggests, Test-Drive ASP.NET MVC takes a different approach to learning MVC as it focuses on testing right from the very start. McCracken wastes no time and swiftly familiarizes us with the framework by building out a trivial Quote-O-Matic application and then dedicates the better part of his book to testing first – first by explaining TDD and then coding a full-featured Getting Organized application inspired by David Allen’s popular book, Getting Things Done. If you are a learn-by-example kind of coder (like me), you will instantly appreciate and enjoy McCracken’s style – its fast-moving, pragmatic and focused on only the most relevant information required to get you going with ASP.NET MVC and TDD. The book continues with the test-first theme but McCracken moves away from the sample application and incorporates other practical skills like persisting models with NHibernate, leveraging Inversion of Control with the IControllerFactory and building a RESTful web service. What I most appreciated about this section was McCracken’s use of and praise for open source libraries like Rhino Mocks, SQLite and StructureMap (to name just a few) and productivity tools like ReSharper, Web Platform Installer and ASP.NET SQL Server Setup Wizard.  McCracken’s emphasis on real world, pragmatic development was clearly demonstrated in every tool choice, straight-forward code block and developer tip. Whether one is already familiar with the tools/tips or not, McCracken’s thought process is easily understood and appreciated. The final section of the book walks the reader through security and deployment – everything from error handling and logging with ELMAH, to ASP.NET Health Monitoring, to using MSBuild with automated builds, to the deployment  of ASP.NET MVC to various web environments. These chapters, like those prior, offer enough information and explanation to simply help you get the job done.  Do I believe Test-Drive ASP.NET MVC will turn you into an expert MVC developer overnight?  Well, no.  I don’t think any book can make that claim.  If that were possible, I think book list prices would skyrocket!  That said, Test-Drive ASP.NET MVC provides a solid foundation and a unique (and dare I say necessary) approach to learning ASP.NET MVC.  Along the way McCracken shares loads of very practical software development tips and references numerous tools and libraries. The bottom line is it’s a great ASP.NET MVC primer – if you’re new to ASP.NET MVC it’s just what you need to get started.  Do I believe Test-Drive ASP.NET MVC will give you everything you need to start employing TDD in your everyday development?  Well, I used to think that learning TDD required a lot of practice and, if you’re lucky enough, the guidance of a mentor or coach.  I used to think that one couldn’t learn TDD from a book alone. Well, I’m still no pro, but I’m testing first now and Jonathan McCracken and his book, Test-Drive ASP.NET MVC, played a big part in making this happen.  If you are an MVC developer and a TDD newb, Test-Drive ASP.NET MVC is just the book for you.

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  • Silverlight 5 &ndash; What&rsquo;s New? (Including Screenshots &amp; Code Snippets)

    - by mbcrump
    Silverlight 5 is coming next year (2011) and this blog post will tell you what you need to know before the beta ships. First, let me address people saying that it is dead after PDC 2010. I believe that it’s best to see what the market is doing, not the vendor. Below is a list of companies that are developing Silverlight 4 applications shown during the Silverlight Firestarter. Some of the companies have shipped and some haven’t. It’s just great to see the actual company names that are working on Silverlight instead of “people are developing for Silverlight”. The next thing that I wanted to point out was that HTML5, WPF and Silverlight can co-exist. In case you missed Scott Gutherie’s keynote, they actually had a slide with all three stacked together. This shows Microsoft will be heavily investing in each technology.  Even I, a Silverlight developer, am reading Pro HTML5. Microsoft said that according to the Silverlight Feature Voting site, 21k votes were entered. Microsoft has implemented about 70% of these votes in Silverlight 5. That is an amazing number, and I am crossing my fingers that Microsoft bundles Silverlight with Windows 8. Let’s get started… what’s new in Silverlight 5? I am going to show you some great application and actual code shown during the Firestarter event. Media Hardware Video Decode – Instead of using CPU to decode, we will offload it to GPU. This will allow netbooks, etc to play videos. Trickplay – Variable Speed Playback – Pitch Correction (If you speed up someone talking they won’t sound like a chipmunk). Power Management – Less battery when playing video. Screensavers will no longer kick in if watching a video. If you pause a video then screensaver will kick in. Remote Control Support – This will allow users to control playback functions like Pause, Rewind and Fastforward. IIS Media Services 4 has shipped and now supports Azure. Data Binding Layout Transitions – Just with a few lines of XAML you can create a really rich experience that is not using Storyboards or animations. RelativeSource FindAncestor – Ancestor RelativeSource bindings make it much easier for a DataTemplate to bind to a property on a container control. Custom Markup Extensions – Markup extensions allow code to be run at XAML parse time for both properties and event handlers. This is great for MVVM support. Changing Styles during Runtime By Binding in Style Setters – Changing Styles at runtime used to be a real pain in Silverlight 4, now it’s much easier. Binding in style setters allows bindings to reference other properties. XAML Debugging – Below you can see that we set a breakpoint in XAML. This shows us exactly what is going on with our binding.  WCF & RIA Services WS-Trust Support – Taken from Wikipedia: WS-Trust is a WS-* specification and OASIS standard that provides extensions to WS-Security, specifically dealing with the issuing, renewing, and validating of security tokens, as well as with ways to establish, assess the presence of, and broker trust relationships between participants in a secure message exchange. You can reduce network latency by using a background thread for networking. Supports Azure now.  Text and Printing Improved text clarity that enables better text rendering. Multi-column text flow, Character tracking and leading support, and full OpenType font support.  Includes a new Postscript Vector Printing API that provides control over what you print . Pivot functionality baked into Silverlight 5 SDK. Graphics Immediate mode graphics support that will enable you to use the GPU and 3D graphics supports. Take a look at what was shown in the demos below. 1) 3D view of the Earth – not really a real-world application though. A doctor’s portal. This demo really stood out for me as it shows what we can do with the 3D / GPU support. Out of Browser OOB applications can now create and manage childwindows as shown in the screenshot below.  Trusted OOB applications can use P/Invoke to call Win32 APIs and unmanaged libraries.  Enterprise Group Policy Support allow enterprises to lock down or up the sandbox capabilities of Silverlight 5 applications. In this demo, he tore the “notes” off of the application and it appeared in a new window. See the black arrow below. In this demo, he connected a USB Device which fired off a local Win32 application that provided the data off the USB stick to Silverlight. Another demo of a Silverlight 5 application exporting data right into Excel running inside of browser. Testing They demoed Coded UI, which is available now in the Visual Studio Feature Pack 2. This will allow you to create automated testing without writing any code manually. Performance: Microsoft has worked to improve the Silverlight startup time. Silverlight 5 provides 64-bit browser support.  Silverlight 5 also provides IE9 Hardware acceleration.   I am looking forward to Silverlight 5 and I hope you are too. Thanks for reading and I hope you visit again soon.  Subscribe to my feed CodeProject

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  • Gene Hunt Says:

    - by BizTalk Visionary
    "She's as nervous as a very small nun at a penguin shoot"   "He's got fingers in more pies than a leper on a cookery course" "You so much as belch out of line and I'll have your scrotum on a barbed wire plate" "Let's go play slappyface" "your surrounded by armed barstewards" “Right, get out and find this murdering scum right now!” [pause] “Scratch that, we start 9am sharp tomorrow, it's beer-o-clock.” "So then Cartwright, you're such a good Detective.... Go and Detect me a packet of Garibaldies" "You're not the one who is going to have to knit himself a new arsehole after 25 years of aggressive male love in prison" “A dream for me is Diana Dors and a bottle of chip fat." “A dream for me is Diana Dors and a bottle of chip fat." “They reckon you've got concussion - but personally, I couldn't give a tart's furry cup if half your brains are falling out. Don't ever waltz into my kingdom playing king of the jungle.” “You great... soft... sissy... girlie... nancy... french... bender... Man-United supporting POOF!!” “Drugs eh? What's the point. They make you forget, make you talk funny, make you see things that aren't there. My old grandma got all of that for free when she had a stroke.” “He's Dead! It's quite serious!” “Fanny in the flat...Nice Work” “SoopaDoopa” “Tits in a Jumper!” “Drop your weapons! You are surrounded by armed bastards!” “It's 1973, almost dinnertime. I'm 'avin 'oops!” “Trust the Gene Genie!” “I wanna hump Britt Ekland...What're we gonna do...!” “Was that 'E' and you don't know the rest?! or you going 'Eeee, I Dunno'” “Good Girl! Prostate probe and no jelly. “ “Give over, it's nothing like Spain!” “I'll come over your houses and stamp on all your toys!” “The Wizard will sort it out. It's cos of the wonderful things he does” “Cartwright can jump up and down on his knackers!” “It's not a windup love, he really thinks like this!” “Women! You can't say two words to them” “I was thinking, maybe, a Berni Inn!” “If I wanted a bollocking for drinking too much...!” “Shhhh...hear that...that's the sound of this case being closed! “Chicken!? In a basket!?” “Seems a large quantity of cocaine...” “You probably thought he kept his cock in his keks!” “The tail-end of Rays demotion speech!” “Stephen Warren is gay!?” “You're a smart boy, use your initiative!” “Don't be such a Jessie!” “I find the idea of a bird brushing her teeth...!” “Never been tempted to the Magic talcum powder?” “Make sure she's got nice tits!” “You're more likely to find an ostrich with a plum up it's arse!” “Drink this lot under the table and have a pint on the way home!” “Never be a female Prime Minister!” “Pub? Pub! pub!.....Pub!” “Thou shalt not suck off rent boys!” “The number for the special clinic is on the notice board!” “If me uncle had tits, would he be me auntie!” “Got your vicars in a twist!” “We Done?!” “Your mates got balls...If they were any bigger he'd need a wheelbarrow!” “The Ending - from 'I want to go home' to the end music.”

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  • DBCC CHECKDB (BatmanDb, REPAIR_ALLOW_DATA_LOSS) &ndash; Are you Feeling Lucky?

    - by David Totzke
    I’m currently working for a client on a PowerBuilder to WPF migration.  It’s one of those “I could tell you, but I’d have to kill you” kind of clients and the quick-lime pits are currently occupied by the EMC tech…but I’ve said too much already. At approximately 3 or 4 pm that day users of the Batman[1] application here in Gotham[1] started to experience problems accessing the application.  Batman[2] is a document management system here that also integrates with the ERP system.  Very little goes on here that doesn’t involve Batman in some way.  The errors being received seemed to point to network issues (TCP protocol error, connection forcibly closed by the remote host etc…) but the real issue was much more insidious. Connecting to the database via SSMS and performing selects on certain tables underlying the application areas that were having problems started to reveal the issue.  You couldn’t do a SELECT * FROM MyTable without it bombing and giving the same error noted above.  A run of DBCC CHECKDB revealed 14 tables with corruption.  One of the tables with issues was the Document table.  Pretty central to a “document management” system.  Information was obtained from IT that a single drive in the SAN went bad in the night.  A new drive was in place and was working fine.  The partition that held the Batman database is configured for RAID Level 5 so a single drive failure shouldn’t have caused any trouble and yet, the database is corrupted.  They do hourly incremental backups here so the first thing done was to try a restore.  A restore of the most recent backup failed so they worked backwards until they hit a good point.  This successful restore was for a backup at 3AM – a full day behind.  This time also roughly corresponds with the time the SAN started to report the drive failure.  The plot thickens… I got my hands on the output from DBCC CHECKDB and noticed a pattern.  What’s sad is that nobody that should have noticed the pattern in the DBCC output did notice.  There was a rush to do things to try and recover the data before anybody really understood what was wrong with it in the first place.  Cooler heads must prevail in these circumstances and some investigation should be done and a plan of action laid out or you could end up making things worse[3].  DBCC CHECKDB also told us that: repair_allow_data_loss is the minimum repair level for the errors found by DBCC CHECKDB Yikes.  That means that the database is so messed up that you’re definitely going to lose some stuff when you repair it to get it back to a consistent state.  All the more reason to do a little more investigation into the problem.  Rescuing this database is preferable to having to export all of the data possible from this database into a new one.  This is a fifteen year old application with about seven hundred tables.  There are TRIGGERS everywhere not to mention the referential integrity constraints to deal with.  Only fourteen of the tables have an issue.  We have a good backup that is missing the last 24 hours of business which means we could have a “do-over” of yesterday but that’s not a very palatable option either. All of the affected tables had TEXT columns and all of the errors were about LOB data types and orphaned off-row data which basically means TEXT, IMAGE or NTEXT columns.  If we did a SELECT on an affected table and excluded those columns, we got all of the rows.  We exported that data into a separate database.  Things are looking up.  Working on a copy of the production database we then ran DBCC CHECKDB with REPAIR_ALLOW_DATA_LOSS and that “fixed” everything up.   The allow data loss option will delete the bad rows.  This isn’t too horrible as we have all of those rows minus the text fields from out earlier export.  Now I could LEFT JOIN to the exported data to find the missing rows and INSERT them minus the TEXT column data. We had the restored data from the good 3AM backup that we could now JOIN to and, with fingers crossed, recover the missing TEXT column information.  We got lucky in that all of the affected rows were old and in the end we didn’t lose anything.  :O  All of the row counts along the way worked out and it looks like we dodged a major bullet here. We’ve heard back from EMC and it turns out the SAN firmware that they were running here is apparently buggy.  This thing is only a couple of months old.  Grrr…. They dispatched a technician that night to come and update it .  That explains why RAID didn’t save us. All-in-all this could have been a lot worse.  Given the root cause here, they basically won the lottery in not losing anything. Here are a few links to some helpful posts on the SQL Server Engine blog.  I love the title of the first one: Which part of 'REPAIR_ALLOW_DATA_LOSS' isn't clear? CHECKDB (Part 8): Can repair fix everything? (in fact, read the whole series) Ta da! Emergency mode repair (we didn’t have to resort to this one thank goodness)   Dave Just because I can…   [1] Names have been changed to protect the guilty. [2] I'm Batman. [3] And if I'm the coolest head in the room, you've got even bigger problems...

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  • Kill a tree, save your website? Content strategy in action, part III

    - by Roger Hart
    A lot has been written about how driving content strategy from within an organisation is hard. And that's true. Red Gate is pretty receptive to new ideas, so although I've not had a total walk in the park, it's been a hike with charming scenery. But I'm one of the lucky ones. Lots of people are involved in content, and depending on your organisation some of those people might be the kind who'll gleefully call themselves "stakeholders". People holding a stake generally want to stick it through something's heart and bury it at a crossroads. Winning them over is not always easy. (Richard Ingram has made a nice visual summary of how this can feel - Content strategy Snakes & ladders - pdf ) So yes, a lot of content strategy advocates are having a hard time. And sure, we've got a nice opportunity to get together and have a hug and a cry, but in the interim we could use a hand. What to do? My preferred approach is, I'll confess, brutal. I'd like nothing so much as to take a scorched earth approach to our website. Burn it, salt the ground, and build the new one right: focusing on clearly delineated business and user content goals, and instrumented so we can tell if we're doing it right. I'm never getting buy-in for that, but a boy can dream. So how about just getting buy-in for some small, tenable improvements? Easier, but still non-trivial. I sat down for a chat with our marketing and design guys. It seemed like a good place to start, even if they weren't up for my "Ctrl-A + Delete"  solution. We talked through some of this stuff, and we pretty much agreed that our content is a bit more broken than we'd ideally like. But to get everybody on board, the problems needed visibility. Doing a visual content inventory Print out the internet. Make a Wall Of Content. Seriously. If you've already done a content inventory, you know your architecture, and you know the scale of the problem. But it's quite likely that very few other people do. So make it big and visual. I'm going to carbon hell, but it seems to be working. This morning, I printed out a tiny, tiny part of our website: the non-support content pertaining to SQL Compare I made big, visual, A3 blowups of each page, and covered a wall with them. A page per web page, spread over something like 6M x 2M, with metrics, right in front of people. Even if nobody reads it (and they are doing) the sheer scale is shocking. 53 pages, all told. Some are redundant, some outdated, some trivial, a few fantastic, and frighteningly many that are great ideas delivered not-quite-right. You have to stand quite far away to get it all in your field of vision. For a lot of today, a whole bunch of folks have been gawping in amazement, talking each other through it, peering at the details, and generally getting excited about content. Developers, sales guys, our CEO, the marketing folks - they're engaged. Will it last? I make no promises. But this sort of wave of interest is vital to getting a content strategy project kicked off. While the content strategist is a saucer-eyed orphan in the cupboard under the stairs, they're not getting a whole lot done. Of course, just printing the site won't necessarily cut it. You have to know your content, and be able to talk about it. Ideally, you'll also have page view and time-on-page metrics. One of the most powerful things you can do is, when people are staring at your wall of content, ask them what they think half of it is for. Pretty soon, you've made a case for content strategy. We're also going to get folks to mark it up - cover it with notes and post-its, let us know how they feel about our content. I'll be blogging about how that goes, but it's exciting. Different business functions have different needs from content, so the more exposure the content gets, and the more feedback, the more you know about those needs. Fingers crossed for awesome.

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  • MSCC: Career & IT Fair 2014

    Already a couple of weeks ago, I've been addressed by Ibraahim and Yunus to see whether it would be interesting to participate in the 1st Career & IT Fair organised by the UoM Computer Club. Well, luckily we met at the Global Windows Azure Bootcamp and I wasn't too sure whether it would be possible for me to attend after all. The main reason is given because of work demand and furthermore due to the fact that the Mauritius Software Craftsmanship Community currently has no advertising material at all. Here's the brief statement of the event: "The UOM Students' Computer Club in collaboration with the UOM Students' Union and UOM CSE Department is organising a 'Career & IT Fair' on the 23rd and 24th April 2014. This event has for objective to provide a platform to tertiary students, secondary students as well as vocational students, the opportunity to meet job recruiters." Luckily, I was reminded that the 23rd is a Wednesday, and therefore I decided that it might be interesting to move our weekly Code & Coffee session to the university and hence be able to attend the career fair. As it turned out it was a great choice and thankfully Pritvi, Nadim as well as Ishwon volunteered to be around at the "community booth". Thankfully, the computer club gave us - the MSCC and the LUGM - one of their spaces in the lobby area of the Paul Octave Wiéhé Auditorium. My impression about the event Very well and professionally organised. Seriously, the lads over at the UoM Computer Club did a great job in organising their 2 days event, and felt very comfortable at any time. Actually, it was kind of amusing to some of the members constantly running around and checking everything. Even though that the whole process went smooth and easy off the hand. There were a couple of interesting pieces of information and announcements during the opening ceremony. For example, the Computer Science faculty is a very young one and has been initiated back in 1988 only - just by 4 staff members at that time. Now, after 25 years they have achieved quite a lot and there are currently 1.000+ active students attending the numerous lectures and courses. But there is no room to rest on previous achievements, and I was kind of surprised to hear that there are plans to extend the campus, and offer new lectures in the fields of nanotechnology, big data handling, and - crossing fingers - the introduction and establishment of a space control centre. Mauritius is already part of the Square Kilometre Array (SKA) and hopefully there will be more activities into that direction in the near future. Community - Awareness and collaboration As stated earlier, I could only spent one morning but luckily other members of the MSCC and the LUGM stayed during the whole two days and provided answers to any interested person. As for me, I took the opportunity to get in touch with the other companies in the lobby. Mainly, to create some awareness about our IT communities but also to see whether there might be options for future engagement in common activities, too. So far, I was able to speak to representatives of the following companies: ACCA Mauritius Business at Work Infomil LinkByNet Microsoft Indian Ocean Islands & French Pacific Spherinity Training Institute Spoon Consulting Ltd. State Informatics Ltd. Unfortunately, I only had a quick chat with an HR representative of LinkByNet but I fully count on our MSCC members like Nitin or LUGM member Ronny to spread our intentions over there.  So far, all of the representatives were really interested in our concepts and activities and I'm currently catching up with an introduction flyer for the MSCC that I'm going to send out to all those contacts via mail. It would be great to have more craftsmen as well as professional support on board. Some pictures from the event MSCC: Fantastic outlook for the near future. Announcements were made on Big data, nanotechnology, and space control centre in Mauritius. Interesting! MSCC: The lobby area was cramped with students. Great way to exchange and network. Good luck to all candidates! Passing the relay staff to... I recommend you to continue to read about the first Career & IT Fair on Ish's blog. He has a great summary and more details on those two days of IT activities than I have. Thanks and feel free to leave a comment (or two)... 

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  • My First Weeks at Red Gate

    - by Jess Nickson
    Hi, my name’s Jess and early September 2012 I started working at Red Gate as a Software Engineer down in The Agency (the Publishing team). This was a bit of a shock, as I didn’t think this team would have any developers! I admit, I was a little worried when it was mentioned that my role was going to be different from normal dev. roles within the company. However, as luck would have it, I was placed within a team that was responsible for the development and maintenance of Simple-Talk and SQL Server Central (SSC). I felt rather unprepared for this role. I hadn’t used many of the technologies involved and of those that I had, I hadn’t looked at them for quite a while. I was, nevertheless, quite excited about this turn of events. As I had predicted, the role has been quite challenging so far. I expected that I would struggle to get my head round the large codebase already in place, having never used anything so much as a fraction of the size of this before. However, I was perhaps a bit naive when it came to how quickly things would move. I was required to start learning/remembering a number of different languages and technologies within time frames I would never have tried to set myself previously. Having said that, my first week was pretty easy. It was filled with meetings that were designed to get the new starters up to speed with the different departments, ideals and rules within the company. I also attended some lightning talks being presented by other employees, which were pretty useful. These occur once a fortnight and normally consist of around four speakers. In my spare time, we set up the Simple-Talk codebase on my computer and I started exploring it and worked on my first feature – redirecting requests for URLs that used incorrect casing! It was also during this time that I was given my first introduction to test-driven development (TDD) with Michael via a code kata. Although I had heard of the general ideas behind TDD, I had definitely never tried it before. Indeed, I hadn’t really done any automated testing of code before, either. The session was therefore very useful and gave me insights as to some of the coding practices used in my team. Although I now understand the importance of TDD, it still seems odd in my head and I’ve yet to master how to sensibly step up the functionality of the code a bit at a time. The second week was both easier and more difficult than the first. I was given a new project to work on, meaning I was no longer using the codebase already in place. My job was to take some designs, a WordPress theme, and some initial content and build a page that allowed users of the site to read provided resources and give feedback. This feedback could include their thoughts about the resource, the topics covered and the page design itself. Although it didn’t sound the most challenging of projects when compared to fixing bugs in our current codebase, it nevertheless provided a few sneaky problems that had me stumped. I really enjoyed working on this project as it allowed me to play around with HTML, CSS and JavaScript; all things that I like working with but rarely have a chance to use. I completed the aims for the project on time and was happy with the final outcome – though it still needs a good designer to take a look at it! I am now into my third week at Red Gate and I have temporarily been pulled off the website from week 2. I am again back to figuring out the Simple-Talk codebase. Monday provided me with the chance to learn a bunch of new things: system level testing, Selenium and Python. I was set the challenge of testing a bug fix dealing with the search bars in Simple-Talk. The exercise was pretty fun, although Mike did have to point me in the right direction when I started making the tests a bit too complex. The rest of the week looks set to be focussed on pair programming with Mike as we work together on a new feature. I look forward to the challenges that still face me and hope that I will be able to get up to speed quickly. *fingers crossed*

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  • Easy Made Easier

    - by dragonfly
        How easy is it to deploy a 2 node, fully redundant Oracle RAC cluster? Not very. Unless you use an Oracle Database Appliance. The focus of this member of Oracle's Engineered Systems family is to simplify the configuration, management and maintenance throughout the life of the system, while offering pay-as-you-grow scaling. Getting a 2-node RAC cluster up and running in under 2 hours has been made possible by the Oracle Database Appliance. Don't take my word for it, just check out these blog posts from partners and end users. The Oracle Database Appliance Experience - Zip Zoom Zoom http://www.fuadarshad.com/2012/02/oracle-database-appliance-experience.html Off-the-shelf Oracle database servers http://normanweaver.wordpress.com/2011/10/10/off-the-shelf-oracle-database-servers/ Oracle Database Appliance – Deployment Steps http://marcel.vandewaters.nl/oracle/database-appliance/oracle-database-appliance-deployment-steps     See how easy it is to deploy an Oracle Database Appliance for high availability with RAC? Now for the meat of this post, which is the first in a series of posts describing tips for making the deployment of an ODA even easier. The key to the easy deployment of an Oracle Database Appliance is the Appliance Manager software, which does the actual software deployment and configuration, based on best practices. But in order for it to do that, it needs some basic information first, including system name, IP addresses, etc. That's where the Appliance Manager GUI comes in to play, taking a wizard approach to specifying the information needed.     Using the Appliance Manager GUI is pretty straight forward, stepping through several screens of information to enter data in typical wizard style. Like most configuration tasks, it helps to gather the required information before hand. But before you rush out to a committee meeting on what to use for host names, and rely on whatever IP addresses might be hanging around, make sure you are familiar with some of the auto-fill defaults for the Appliance Manager. I'll step through the key screens below to highlight the results of the auto-fill capability of the Appliance Manager GUI.     Depending on which of the 2 Configuration Types (Config Type screen) you choose, you will get a slightly different set of screens. The Typical configuration assumes certain default configuration choices and has the fewest screens, where as the Custom configuration gives you the most flexibility in what you configure from the start. In the examples below, I have used the Custom config type.     One of the first items you are asked for is the System Name (System Info screen). This is used to identify the system, but also as the base for the default hostnames on following screens. In this screen shot, the System Name is "oda".     When you get to the next screen (Generic Network screen), you enter your domain name, DNS IP address(es), and NTP IP address(es). Next up is the Public Network screen, seen below, where you will see the host name fields are automatically filled in with default host names based on the System Name, in this case "oda". The System Name is also the basis for default host names for the extra ethernet ports available for configuration as part of a Custom configuration, as seen in the 2nd screen shot below (Other Network). There is no requirement to use these host names, as you can easily edit any of the host names. This does make filling in the configuration details easier and less prone to "fat fingers" if you are OK with these host names. Here is a full list of the automatically filled in host names. 1 2 1-vip 2-vip -scan 1-ilom 2-ilom 1-net1 2-net1 1-net2 2-net2 1-net3 2-net3     Another auto-fill feature of the Appliance Manager GUI follows a common practice of deploying IP Addresses for a RAC cluster in sequential order. In the screen shot below, I entered the first IP address (Node1-IP), then hit Tab to move to the next field. As a result, the next 5 IP address fields were automatically filled in with the next 5 IP addresses sequentially from the first one I entered. As with the host names, these are not required, and can be changed to whatever your IP address values are. One note of caution though, if the first IP Address field (Node1-IP) is filled out and you click in that field and back out, the following 5 IP addresses will be set to the sequential default. If you don't use the sequential IP addresses, pay attention to where you click that mouse. :-)     In the screen shot below, by entering the netmask value in the Netmask field, in this case 255.255.255.0, the gateway value was auto-filled into the Gateway field, based on the IP addresses and netmask previously entered. As always, you can change this value.     My last 2 screen shots illustrate that the same sequential IP address autofill and netmask to gateway autofill works when entering the IP configuration details for the Integrated Lights Out Manager (ILOM) for both nodes. The time these auto-fill capabilities save in entering data is nice, but from my perspective not as important as the opportunity to avoid data entry errors. In my next post in this series, I will touch on the benefit of using the network validation capability of the Appliance Manager GUI prior to deploying an Oracle Database Appliance.

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  • Remote Workers...We're Not That Bad!

    - by user12601034
    I work from home a lot – my team is located in different cities and countries, my manager is in a different city, and most of our work is done via conference calls, email and collaboration through Oracle Social Network. We’ve figured out how to be effective and involve team members, regardless of where we are all located. When I mention that I work from home, a lot of my friends will laugh, roll their eyes or use their fingers to make quotation marks around “work from home.” Their belief is that I’m sitting at home, eating bon-bons and watching television. The attempts at humor only multiply when they know that my husband also mostly works from home. So, it was with great joy that I read the Lifehacker article Why Remote Workers Are More (Yes, More) Engaged. I’m not going to re-write the article for you, but four highlights from the article include: Proximity breeds complacency –because communicating with employees sitting next to you is so easy, you may not do it well. Absence makes people try harder to connect – because you have to make an effort to connect to your team, you tend to pay better attention when you do connect Leaders of virtual team make better use of tools – when working remotely, you will use technology (many different forms of it) to connect with your team. This daily use of the tools makes you more proficient with those tools Leaders of far-flung teams maximize the time spent together – getting together takes effort, time and money, so leaders tend to filter out distractions when teams do get together. These points made me happy because I’ve seen the same things play out in my team located around the world. And I’m not saying that a virtual team is more effective than a co-located team – but my virtual team doesn’t have the option of filing into a conference room for a face-to-face meeting whenever we want. Instead, we have to figure out how to work effectively without meeting face-to-face. Am I more engaged as a remote worker? I’d like to think that I am. I’ve been on calls with colleagues at 3am – this would never happen if my only option was to be in the office. I can leave my “office” to pick up my kids from school…and I’m willingly back online after kids are in bed to finish up anything I need to. Oracle Social Network lets me use my iPad to engage with my teammates when I’m waiting at music lessons, the doctor’s office or any place else with a network connection. I feel like I’m more connected with my team, and I feel like I’m more connected with my family life. So yes, I am a remote worker, and I am engaged. If you lead a virtual team, I challenge you to increase the ways that you communicate to effectively engage your team. If you are on a virtual team, I challenge you to think about how you might interact with team members to keep both them and yourself engaged in your work. And if you have some great ideas on how to make virtual teams (and workers) effective and engaged, please share those ideas in the comments! Now, if you’ll excuse me, I need to go get a bon-bon...   :) Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}

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  • Adventures in Windows 8: Solving activation errors

    - by Laurent Bugnion
    Note: I tagged this article with “MVVM” because I got a few support requests for MVVM Light regarding this exact issue. In fact it is a Windows 8 issue and has nothing to do with MVVM Light per se… Sometimes when you work on a Windows 8 app, you will get a very annoying issue when starting the app. In that case, the app doesn’t not even start past the Splash screen. Putting a breakpoint in App.xaml.cs doesn’t help because the app doesn’t even reach that point! So what exactly is happening? Well when a Windows 8 app starts, the system is performing a few check first. One of the checks, for instance, is to see if an app with the same package ID is already available. The package ID is a unique value set in the package manifest. In the Solution Explorer, double click on Package.appxmanifest. This opens the manifest in a special editor Click on the Packaging tab See the GUID under Package Name. This is the unique ID I am talking about. If there is a conflict (i.e. if an app is already installed with the exact same ID), Windows will warm the user that the app is already installed. However when you are in the process of developing an app, you install and uninstall the same app many many times (every time that you start in Visual Studio), and sometimes some issues arise, for instance failing to uninstall the app before starting the new instance of the same app. First step if you get such an error When the application fails to start past the splash screen, the first step is to identify what kind of error happened. In my experience the “already installed” is by far the most frequent (in fact I never had another such error), but it can be something else. An annoying thing is that the popup that shows the error is usually started below the Windows 8 app, and so you don’t even see it! This is especially true if you run this in the Simulator. In that case, do the following: Press on the Simulator’s home button, then press on the Desktop tile on the Start menu. The error popup should be shown on the desktop. If your applications runs on the Local machine, you also do the same and press the Windows button, and then from the Start menu press the Desktop tile. Deployment error in Studio Sometimes the same error causes Visual Studio to fail launching the application at all with a deployment error. This is a better case, because at least it is clear that there is an issue. In that case, write down the code that is shown in the Error window (for instance 0x80073D05 in the example below). Once you have the error code, go to the “Troubleshooting packaging, deployment, and query of Windows Store apps” page and look up the code in question. In my case, the error was “ERROR_DELETING_EXISTING_APPLICATIONDATA_STORE_FAILED”, “An error occurred while deleting the package's previously existing application data.” Solving the “ERROR_DELETING_EXISTING_APPLICATIONDATA_STORE_FAILED” issue Update: Before trying the below, you can also try the simple steps: Exit Visual Studio Go to the Start menu Locate your app’s tile. It should be visible in the Start menu directly, towards the far end on the right. Right click the tile and select Uninstall from the App Bar. Restart Visual Studio and try again. Sometimes it helps. If it doesn’t, then try the following: In order to solve the case where Windows, for any reason, fails to delete the existing application before starting the new instance, follow the steps: Open the Package.appxmanifest in Visual Studio Open the Packaging tab. Change the Package name. For tests you can just try to change the last character of the GUID, though I would recommend creating a brand new GUID. Press Start Type GUID Start the GUID Generator application Select Registry Format Press Copy. Paste the new GUID in place of the Package Name in Visual Studio Important: don’t forget to remove the curly brackets at the beginning and at the end of the newly pasted GUID. Then you just have to cross your fingers and start the application again… If it works, celebrate. if it doesn’t work… well at this point I am not sure so good luck with that ;) Happy coding, Laurent   Laurent Bugnion (GalaSoft) Subscribe | Twitter | Facebook | Flickr | LinkedIn

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  • Cancel UITouch Events When View Covered By Modal UIViewController

    - by kkrizka
    Hi there, I am writing an application where the user has to move some stuff on the screen using his fingers and drop them. To do this, I am using the touchesBegan,touchesEnded... function of each view that has to be moved. The problem is that sometimes the views are covered by a view displayed using the [UIViewController presentModalViewController] function. As soon as that happens, the UIView that I was moving stops receiving the touch events, since it was covered up. But there is no event telling me that it stopped receiving the events, so I can reset the state of the moved view. The following is an example that demonstrates this. The functions are part of a UIView that is being shown in the main window. It listens to touch events and when I drag the finger for some distance, it presents a modal view that covers everything. In the Run Log, it prints what touch events are received. - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { NSLog(@"touchesBegan"); touchStart=[[touches anyObject] locationInView:self]; } - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { CGPoint touchAt=[[touches anyObject] locationInView:self]; float xx=(touchAt.x-touchStart.x)*(touchAt.x-touchStart.x); float yy=(touchAt.y-touchStart.y)*(touchAt.y-touchStart.y); float rr=xx+yy; NSLog(@"touchesMoved %f",rr); if(rr > 100) { NSLog(@"Show modal"); [viewController presentModalViewController:[UIViewController new] animated:NO]; } } - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event { NSLog(@"touchesEnded"); } - (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event { NSLog(@"touchesCancelled"); } But when I test the application and trigger the modal dialog to be displayed, the following is the output in the Run Log. [Session started at 2010-03-27 16:17:14 -0700.] 2010-03-27 16:17:18.831 modelTouchCancel[2594:207] touchesBegan 2010-03-27 16:17:19.485 modelTouchCancel[2594:207] touchesMoved 2.000000 2010-03-27 16:17:19.504 modelTouchCancel[2594:207] touchesMoved 4.000000 2010-03-27 16:17:19.523 modelTouchCancel[2594:207] touchesMoved 16.000000 2010-03-27 16:17:19.538 modelTouchCancel[2594:207] touchesMoved 26.000000 2010-03-27 16:17:19.596 modelTouchCancel[2594:207] touchesMoved 68.000000 2010-03-27 16:17:19.624 modelTouchCancel[2594:207] touchesMoved 85.000000 2010-03-27 16:17:19.640 modelTouchCancel[2594:207] touchesMoved 125.000000 2010-03-27 16:17:19.641 modelTouchCancel[2594:207] Show modal Any suggestions on how to reset the state of a UIView when its touch events are interrupted by a modal view?

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  • iPhone smooth move and pinch of UIImageView

    - by Jacob
    I have an image view that I'm wanting to be able to move around, and pinch to stretch it. It's all working, but it's kinda jumpy when I start to do any pinch movements. The position will jump back and forth between the two fingers. - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { startLocation = [[touches anyObject] locationInView:mouth_handle]; if([touches count] == 2) { NSArray *twoTouches = [touches allObjects]; UITouch *first = [twoTouches objectAtIndex:0]; UITouch *second = [twoTouches objectAtIndex:1]; initialDistance = distanceBetweenPoints([first locationInView:mouth_handle],[second locationInView:mouth_handle]); } } - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { CGPoint pt = [[touches anyObject] locationInView:mouth_handle]; CGRect frame = [mouth_handle frame]; frame.origin.x += pt.x - startLocation.x; frame.origin.y += pt.y - startLocation.y; frame.origin.x = (frame.origin.x < 58) ? 58 : frame.origin.x; frame.origin.x = (frame.origin.x > (260 - mouth_handle.frame.size.width)) ? (260 - mouth_handle.frame.size.width) : frame.origin.x; frame.origin.y = (frame.origin.y < 300) ? 300 : frame.origin.y; frame.origin.y = (frame.origin.y > 377) ? 377 : frame.origin.y; if(frame.origin.x - prevDistanceX > 2 && frame.origin.x - prevDistanceX < -2) frame.origin.x = prevDistanceX; if(frame.origin.y - prevDistanceY > 2 && frame.origin.y - prevDistanceY < -2) frame.origin.y = prevDistanceY; prevDistanceX = frame.origin.x; prevDistanceY = frame.origin.y; CGFloat handleWidth = mouth_handle.frame.size.width; if([touches count] == 2) { NSArray *twoTouches = [touches allObjects]; UITouch *first = [twoTouches objectAtIndex:0]; UITouch *second = [twoTouches objectAtIndex:1]; CGFloat currentDistance = distanceBetweenPoints([first locationInView:mouth_handle],[second locationInView:mouth_handle]); handleWidth = mouth_handle.frame.size.width + (currentDistance - initialDistance); handleWidth = (handleWidth < 60) ? 60 : handleWidth; handleWidth = (handleWidth > 150) ? 150 : handleWidth; if(initialDistance == 0) { initialDistance = currentDistance; } initialDistance = currentDistance; } mouth_handle.frame = CGRectMake(frame.origin.x, frame.origin.y, handleWidth, 15); } Any thoughts on how to make this smoother?

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