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  • Microsoft Seeks Feedback on SQL Server Denali

    Dan Jones Principal Program Manager of Microsoft s SQL Server Manageability team recently created a blog post asking for feedback on three topics concerning SQL Server Code Name Denali. The feedback is essential to Jones and the Microsoft team as it helps them see how they can tweak the Denali adoption process to better suit user needs.... Display the VeriSign seal And increase sales by an average of 24%. Start your trial today

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  • Google I/O 2012 - Storing Data in Google Apps Script

    Google I/O 2012 - Storing Data in Google Apps Script Drew Csillag This session covers the different ways in which developers can store data when using Google Script. We'll break things down by use case, and then show examples of how to use the different options: spreadsheet, Script/User Properties, JDBC connector, and distribution. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 24 1 ratings Time: 41:48 More in Science & Technology

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  • C#: Does an IDisposable in a Halted Iterator Dispose?

    - by James Michael Hare
    If that sounds confusing, let me give you an example. Let's say you expose a method to read a database of products, and instead of returning a List<Product> you return an IEnumerable<Product> in iterator form (yield return). This accomplishes several good things: The IDataReader is not passed out of the Data Access Layer which prevents abstraction leak and resource leak potentials. You don't need to construct a full List<Product> in memory (which could be very big) if you just want to forward iterate once. If you only want to consume up to a certain point in the list, you won't incur the database cost of looking up the other items. This could give us an example like: 1: // a sample data access object class to do standard CRUD operations. 2: public class ProductDao 3: { 4: private DbProviderFactory _factory = SqlClientFactory.Instance 5:  6: // a method that would retrieve all available products 7: public IEnumerable<Product> GetAvailableProducts() 8: { 9: // must create the connection 10: using (var con = _factory.CreateConnection()) 11: { 12: con.ConnectionString = _productsConnectionString; 13: con.Open(); 14:  15: // create the command 16: using (var cmd = _factory.CreateCommand()) 17: { 18: cmd.Connection = con; 19: cmd.CommandText = _getAllProductsStoredProc; 20: cmd.CommandType = CommandType.StoredProcedure; 21:  22: // get a reader and pass back all results 23: using (var reader = cmd.ExecuteReader()) 24: { 25: while(reader.Read()) 26: { 27: yield return new Product 28: { 29: Name = reader["product_name"].ToString(), 30: ... 31: }; 32: } 33: } 34: } 35: } 36: } 37: } The database details themselves are irrelevant. I will say, though, that I'm a big fan of using the System.Data.Common classes instead of your provider specific counterparts directly (SqlCommand, OracleCommand, etc). This lets you mock your data sources easily in unit testing and also allows you to swap out your provider in one line of code. In fact, one of the shared components I'm most proud of implementing was our group's DatabaseUtility library that simplifies all the database access above into one line of code in a thread-safe and provider-neutral way. I went with my own flavor instead of the EL due to the fact I didn't want to force internal company consumers to use the EL if they didn't want to, and it made it easy to allow them to mock their database for unit testing by providing a MockCommand, MockConnection, etc that followed the System.Data.Common model. One of these days I'll blog on that if anyone's interested. Regardless, you often have situations like the above where you are consuming and iterating through a resource that must be closed once you are finished iterating. For the reasons stated above, I didn't want to return IDataReader (that would force them to remember to Dispose it), and I didn't want to return List<Product> (that would force them to hold all products in memory) -- but the first time I wrote this, I was worried. What if you never consume the last item and exit the loop? Are the reader, command, and connection all disposed correctly? Of course, I was 99.999999% sure the creators of C# had already thought of this and taken care of it, but inspection in Reflector was difficult due to the nature of the state machines yield return generates, so I decided to try a quick example program to verify whether or not Dispose() will be called when an iterator is broken from outside the iterator itself -- i.e. before the iterator reports there are no more items. So I wrote a quick Sequencer class with a Dispose() method and an iterator for it. Yes, it is COMPLETELY contrived: 1: // A disposable sequence of int -- yes this is completely contrived... 2: internal class Sequencer : IDisposable 3: { 4: private int _i = 0; 5: private readonly object _mutex = new object(); 6:  7: // Constructs an int sequence. 8: public Sequencer(int start) 9: { 10: _i = start; 11: } 12:  13: // Gets the next integer 14: public int GetNext() 15: { 16: lock (_mutex) 17: { 18: return _i++; 19: } 20: } 21:  22: // Dispose the sequence of integers. 23: public void Dispose() 24: { 25: // force output immediately (flush the buffer) 26: Console.WriteLine("Disposed with last sequence number of {0}!", _i); 27: Console.Out.Flush(); 28: } 29: } And then I created a generator (infinite-loop iterator) that did the using block for auto-Disposal: 1: // simply defines an extension method off of an int to start a sequence 2: public static class SequencerExtensions 3: { 4: // generates an infinite sequence starting at the specified number 5: public static IEnumerable<int> GetSequence(this int starter) 6: { 7: // note the using here, will call Dispose() when block terminated. 8: using (var seq = new Sequencer(starter)) 9: { 10: // infinite loop on this generator, means must be bounded by caller! 11: while(true) 12: { 13: yield return seq.GetNext(); 14: } 15: } 16: } 17: } This is really the same conundrum as the database problem originally posed. Here we are using iteration (yield return) over a large collection (infinite sequence of integers). If we cut the sequence short by breaking iteration, will that using block exit and hence, Dispose be called? Well, let's see: 1: // The test program class 2: public class IteratorTest 3: { 4: // The main test method. 5: public static void Main() 6: { 7: Console.WriteLine("Going to consume 10 of infinite items"); 8: Console.Out.Flush(); 9:  10: foreach(var i in 0.GetSequence()) 11: { 12: // could use TakeWhile, but wanted to output right at break... 13: if(i >= 10) 14: { 15: Console.WriteLine("Breaking now!"); 16: Console.Out.Flush(); 17: break; 18: } 19:  20: Console.WriteLine(i); 21: Console.Out.Flush(); 22: } 23:  24: Console.WriteLine("Done with loop."); 25: Console.Out.Flush(); 26: } 27: } So, what do we see? Do we see the "Disposed" message from our dispose, or did the Dispose get skipped because from an "eyeball" perspective we should be locked in that infinite generator loop? Here's the results: 1: Going to consume 10 of infinite items 2: 0 3: 1 4: 2 5: 3 6: 4 7: 5 8: 6 9: 7 10: 8 11: 9 12: Breaking now! 13: Disposed with last sequence number of 11! 14: Done with loop. Yes indeed, when we break the loop, the state machine that C# generates for yield iterate exits the iteration through the using blocks and auto-disposes the IDisposable correctly. I must admit, though, the first time I wrote one, I began to wonder and that led to this test. If you've never seen iterators before (I wrote a previous entry here) the infinite loop may throw you, but you have to keep in mind it is not a linear piece of code, that every time you hit a "yield return" it cedes control back to the state machine generated for the iterator. And this state machine, I'm happy to say, is smart enough to clean up the using blocks correctly. I suspected those wily guys and gals at Microsoft engineered it well, and I wasn't disappointed. But, I've been bitten by assumptions before, so it's good to test and see. Yes, maybe you knew it would or figured it would, but isn't it nice to know? And as those campy 80s G.I. Joe cartoon public service reminders always taught us, "Knowing is half the battle...". Technorati Tags: C#,.NET

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  • And What's Your Brand Worth? ...anything?

    - by [email protected]
    100 Best Global Brands from Business Week Story: The Great Trust Offensive Slide Show: Top Brands 2009 Methodology: Picking the Winners The recession has presented marketing executives around the world with the toughest test of their careers. Some brands have prospered amid the hard times--or at least held their own. Others have slipped a surprising number of places on our ninth annual ranking, compiled by consultancy Interbrand. But for seven brands, impressive performances saw them race up the charts to take their place on this year's list. Here are the numbers behind the rankings Rank 2009 Rank 2008 Employer 2009 Brand value($millions) 2008 Brand value($millions) Percent change(%) Country of Ownership 1 1 Coca-Cola  68,734  66,667  3 U.S. 2 2 IBM  60,211  59,031  2 U.S. 3 3 Microsoft  56,647  59,007  -4 U.S. 4 4 GE  47,777  53,086  -10 U.S. 5 5 Nokia  34,864  35,942  -3 Finland 6 8 McDonald's  32,275  31,049  4 U.S. 7 10 Google  31,980  25,590  25 U.S. 8 6 Toyota  31,330  34,050  -8 Japan 9 7 Intel  30,636  31,261  -2 U.S. 10 9 Disney  28,447  29,251  -3 U.S. 11 12 Hewlett-Packard  24,096  23,509  2 U.S. 12 11 Mercedes-Benz  23,867  25,577  -7 Germany 13 14 Gillette  22,841  22,069  4 U.S. 14 17 Cisco  22,030  21,306  3 U.S. 15 13 BMW  21,671  23,298  -7 Germany 16 16 Louis Vuitton  21,120  21,602  -2 France 17 18 Marlboro  19,010  21,300  -11 U.S. 18 20 Honda  17,803  19,079  -7 Japan 19 21 Samsung  17,518  17,689  -1 S. Korea 20 24 Apple  15,443  13,724  12 U.S. 21 22 H&M  15,375  13,840  11 Sweden 22 15 American Express  14,971  21,940  -32 U.S. 23 26 Pepsi  13,706  13,249  3 U.S. 24 23 Oracle  13,699  13,831  -1 U.S. 25 28 Nescafe  13,317  13,055  2 Switzerland 26 29 Nike  13,179  12,672  4 U.S. 27 31 SAP  12,106  12,228  -1 Germany 28 35 Ikea  12,004  10,913  10 Sweden 29 25 Sony  11,953  13,583  -12 Japan 30 33 Budweiser  11,833  11,438  3 Belgium 31 30 UPS  11,594  12,621  -8 U.S. 32 27 HSBC  10,510  13,143  -20 Britain 33 36 Canon  10,441  10,876  -4 Japan 34 39 Kellogg's  10,428  9,710  7 U.S. 35 32 Dell  10,291  11,695  -12 U.S. 36 19 Citi  10,254  20,174  -49 U.S. 37 37 JPMorgan  9,550  10,773  -11 U.S. 38 38 Goldman Sachs  9,248  10,331  -10 U.S. 39 40 Nintendo  9,210  8,772  5 Japan 40 44 Thomson Reuters  8,434  8,313  1 Canada 41 45 Gucci  8,182  8,254  -1 Italy 42 43 Philips  8,121  8,325  -2 Netherlands 43 58 Amazon  7,858  6,434  22 U.S. 44 51 L'Oreal  7,748  7,508  3 France 45 47 Accenture  7,710  7,948  -3 U.S. 46 46 eBay  7,350  7,991  -8 U.S. 47 48 Siemens  7,308  7,943  -8 Germany 48 56 Heinz  7,244  6,646  9 U.S. 49 49 Ford  7,005  7,896  -11 U.S. 50 62 Zara  6,789  5,955  14 Spain   Valuations do not represent a guarantee of future performance of the brands or companies. Data: Interbrand, BusinessWeek

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  • Error 404 after rewrite query strings with htaccess

    - by Cristian
    I'm trying to redirect the URLs of a client's website like this: www.localsite.com/immobile.php?id_immobile=24 In something like this: www.localsite.com/immobile/24.php I'm using this rule in .htaccess but it returns a 404 error page. RewriteEngine On RewriteCond %{QUERY_STRING} ^id_immobile=([0-9]*)$ RewriteRule ^immobile\.php$ http://localsite.com/immobile/%1.php? [L] I have tried many other rules, but none work. What can I do?

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  • WebLogic 12c hands-on bootcamps for partners – free of charge

    - by JuergenKress
    For all WebLogic Partner Community members we offer our WebLogic 12c hands-on Bootcamps – free of charge! If you want to become an Application Grid Specialized: Register Here! Country Date Location Registration Germany 3-5 April 2012 Oracle Düsseldorf Click here France 24-26 April 2012 Oracle Colombes Click here Spain 08-10 May 2012 Oracle Madrid Click here Netherlands 22-24 May 2012 Oracle Amsterdam Click here United Kingdom 06-08 June 2012 Oracle Reading Click here Italy 19-21 June 2012 Oracle Cinisello Balsamo Click here Portugal 10-12 July 2012 Oracle Lisbon Click here Skill requirements Attendees need to have the following skills as this is required by the product-set and to make sure they get the most out of the training: Basic knowledge in Java and JavaEE Understanding the Application Server concept Basic knowledge in older releases of WebLogic Server would be beneficial Member of WebLogic Partner Community for registration please vist http://www.oracle.com/partners/goto/wls-emea Hardware requirements Every participant works on his own notebook. The minimal hardware requirements are: 4Gb physical RAM (we will boot the image with 2Gb RAM) dual core CPU 15 GB HD Software requirements Please install Oracle VM VirtualBox 4.1.8 Follow-up and certification With the workshop registration you agree to the following next steps Follow-up training attend and pass the Oracle Application Grid Certified Implementation Specialist Registration For details and registration please visit Register Here Free WebLogic Certification (Free assessment voucher to become certified) For all WebLogic experts, we offer free vouchers worth $195 for the Oracle Application Grid Certified Implementation Specialist assessment. To demonstrate your WebLogic knowledge you first have to pass the free online assessment Oracle Application Grid PreSales Specialist. For free vouchers, please send an e-mail with the screenshot of your Oracle Application Grid PreSales certirficate to [email protected] including your Name, Company, E-mail and Country. Note: This offer is limited to partners from Europe Middle East and Africa. Partners from other countries please contact your Oracle partner manager. WebLogic Specialization To become specialized in Application Grid, please make sure that you access the: Application Grid Specialization Guide Application Grid Specialization Checklist If you have any questions please contact the Oracle Partner Business Center. WebLogic Partner Community For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Mix Forum Wiki Technorati Tags: WebLogic training,Java training,WebLogic 12c,WebLogic Community,OPN,WebLogic,Oracle,WebLogic Certification,Apps Grid Certification,Implementation Specialist,Apps Grid Specialist,Oracle education

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  • Trouble compiling MonoDevelop 4 on Ubuntu 12.04

    - by Mehran
    I'm trying to compile the latest version of MonoDevelop (4.0.9) on my Ubuntu 12.04 and I'm facing errors I can not overcome. Here are my machine's configurations: OS: Ubuntu 12.04 64-bit Mono: version 3.0.12 And here are the commands that I ran to download MonoDevelop: $ git clone git://github.com/mono/monodevelop.git $ cd monodevelop $ git submodule init $ git submodule update And afterwards to compile: ./configure --prefix=`pkg-config --variable=prefix mono` --profile=stable make Then I faced the following errors (sorry if it's long): ... Building ./Main.sln xbuild /verbosity:quiet /nologo /property:CodePage=65001 ./Main.sln /property:Configuration=Debug /home/mehran/git/monodevelop/main/Main.sln: warning : Don't know how to handle GlobalSection MonoDevelopProperties.Debug, Ignoring. : warning CS1685: The predefined type `System.Runtime.CompilerServices.ExtensionAttribute' is defined in multiple assemblies. Using definition from `mscorlib' /usr/lib/mono/4.0/Microsoft.CSharp.targets: error : Compiler crashed with code: 1. : warning CS1685: The predefined type `System.Runtime.CompilerServices.ExtensionAttribute' is defined in multiple assemblies. Using definition from `mscorlib' Editor/IDocument.cs(98,30): warning CS0419: Ambiguous reference in cref attribute `GetOffset'. Assuming `ICSharpCode.NRefactory.Editor.IDocument.GetOffset(int, int)' but other overloads including `ICSharpCode.NRefactory.Editor.IDocument.GetOffset(ICSharpCode.NRefactory.TextLocation)' have also matched PatternMatching/INode.cs(51,37): warning CS1574: XML comment on `ICSharpCode.NRefactory.PatternMatching.PatternExtensions.Match(this ICSharpCode.NRefactory.PatternMatching.INode, ICSharpCode.NRefactory.PatternMatching.INode)' has cref attribute `PatternMatching.Match.Success' that could not be resolved TextLocation.cs(35,23): warning CS0419: Ambiguous reference in cref attribute `Editor.IDocument.GetOffset'. Assuming `ICSharpCode.NRefactory.Editor.IDocument.GetOffset(int, int)' but other overloads including `ICSharpCode.NRefactory.Editor.IDocument.GetOffset(ICSharpCode.NRefactory.TextLocation)' have also matched TypeSystem/FullTypeName.cs(87,24): warning CS0419: Ambiguous reference in cref attribute `ReflectionHelper.ParseReflectionName'. Assuming `ICSharpCode.NRefactory.TypeSystem.ReflectionHelper.ParseReflectionName(string)' but other overloads including `ICSharpCode.NRefactory.TypeSystem.ReflectionHelper.ParseReflectionName(string, ref int)' have also matched TypeSystem/INamedElement.cs(59,24): warning CS0419: Ambiguous reference in cref attribute `ReflectionHelper.ParseReflectionName'. Assuming `ICSharpCode.NRefactory.TypeSystem.ReflectionHelper.ParseReflectionName(string)' but other overloads including `ICSharpCode.NRefactory.TypeSystem.ReflectionHelper.ParseReflectionName(string, ref int)' have also matched TypeSystem/IType.cs(50,26): warning CS1584: XML comment on `ICSharpCode.NRefactory.TypeSystem.IType' has syntactically incorrect cref attribute `IEquatable{IType}.Equals(IType)' TypeSystem/IType.cs(319,38): warning CS1580: Invalid type for parameter `1' in XML comment cref attribute `GetMethods(Predicate{IUnresolvedMethod}, GetMemberOptions)' TypeSystem/TypeKind.cs(61,17): warning CS1580: Invalid type for parameter `1' in XML comment cref attribute `IType.GetNestedTypes(Predicate{ITypeDefinition}, GetMemberOptions)' TypeSystem/SpecialType.cs(50,52): warning CS1580: Invalid type for parameter `1' in XML comment cref attribute `IType.GetNestedTypes(Predicate{ITypeDefinition}, GetMemberOptions)' /usr/lib/mono/4.0/Microsoft.CSharp.targets: error : Compiler crashed with code: 1.

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  • 5 Free Intrusion Detection Softwares (IDS)

    Tools and Utilities to Monitor Your Network For Suspicious or Malicious Activity Snort for Windows Snort is an open source network intrusion detection system, capable of performing real-time traffi... [Author: Alam Je - Computers and Internet - March 24, 2010]

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  • Multiple vulnerabilities in Adobe Flashplayer

    - by chandan
    CVE DescriptionCVSSv2 Base ScoreComponentProduct and Resolution CVE-2012-0724 Denial of Service (DoS) vulnerability 10.0 Adobe Flashplayer Solaris 10 SPARC: 125332-24 X86: 125333-23 CVE-2012-0725 Denial of Service (DoS) vulnerability 10.0 CVE-2012-0768 Denial of Service(DoS) vulnerability 10.0 CVE-2012-0769 Information disclosure vulnerability 5.0 CVE-2012-0772 Denial of Service (DoS) vulnerability 10.0 CVE-2012-0773 Denial of Service (DoS) vulnerability 10.0 This notification describes vulnerabilities fixed in third-party components that are included in Oracle's product distributions.Information about vulnerabilities affecting Oracle products can be found on Oracle Critical Patch Updates and Security Alerts page.

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  • Network is not working anymore - Ubuntu 12.04

    - by Jonathan
    Network is not working anymore - Ubuntu 12.04 Hello, I have a problem with my network connection. I have been using the same laptop with Ubuntu and the same connection for more than a year, and suddenly yesterday the connection stopped working (both wireless and wired). I've tested with another computer and the connection is fine (both wireless and wired). I've been reading similar posts but I haven't found a solution yet. I tried a few commands that I'm posting here (my system is in spanish, so I have traslated it to english, maybe the terms are not accurate): grep -i eth /var/log/syslog | tail Jun 3 18:45:40 vanesa-pc NetworkManager[3584]: (eth0): now managed Jun 3 18:45:40 vanesa-pc NetworkManager[3584]: (eth0): device state change: unmanaged - unavailable (reason 'managed') [10 20 2] Jun 3 18:45:40 vanesa-pc NetworkManager[3584]: (eth0): bringing up device. Jun 3 18:45:40 vanesa-pc NetworkManager[3584]: (eth0): preparing device. Jun 3 18:45:40 vanesa-pc kernel: [ 7351.845743] forcedeth 0000:00:0a.0: irq 41 for MSI/MSI-X Jun 3 18:45:40 vanesa-pc kernel: [ 7351.845984] forcedeth 0000:00:0a.0: eth0: no link during initialization Jun 3 18:45:40 vanesa-pc kernel: [ 7351.847103] ADDRCONF(NETDEV_UP): eth0: link is not ready Jun 3 18:45:40 vanesa-pc NetworkManager[3584]: (eth0): deactivating device (reason 'managed') [2] Jun 3 18:45:40 vanesa-pc NetworkManager[3584]: Added default wired connection 'Wired connection 1' for /sys/devices/pci0000:00/0000:00:0a.0/net/eth0 Jun 3 18:45:40 vanesa-pc kernel: [ 7351.848817] ADDRCONF(NETDEV_UP): eth0: link is not ready ifconfig -a eth0 Link encap:Ethernet addressHW 00:1b:24:fc:a8:d1 ACTIVE BROADCAST MULTICAST MTU:1500 Metric:1 Packages RX:0 errors:16 lost:0 overruns:0 frame:16 Packages TX:123 errors:0 lost:0 overruns:0 carrier:0 colissions:0 length.tailTX:1000 Bytes RX:0 (0.0 B) TX bytes:26335 (26.3 KB) Interruption:41 Base address: 0x2000 lo Link encap:Local loop Inet address:127.0.0.1 Mask:255.0.0.0 Inet6 address: ::1/128 Scope:Host ACTIVE LOOP WORKING MTU:16436 Metrics:1 Packages RX:1550 errors:0 lost:0 overruns:0 frame:0 Packages TX:1550 errors:0 lost:0 overruns:0 carrier:0 colissions:0 long.tailTX:0 Bytes RX:125312 (125.3 KB) TX bytes:125312 (125.3 KB) iwconfig lo no wireless extensions. eth0 no wireless extensions. sudo lshw -C network *-network description: Ethernet interface product: MCP67 Ethernet manufacturer: NVIDIA Corporation Physical id: a bus information: pci@0000:00:0a.0 logical name: eth0 version: a2 series: 00:1b:24:fc:a8:d1 capacity: 100Mbit/s width: 32 bits clock: 66MHz capacities: pm msi ht bus_master cap_list ethernet physical mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=forcedeth driverversion=0.64 latency=0 link=no maxlatency=20 mingnt=1 multicast=yes port=MII resources: irq:41 memoria:f6288000-f6288fff ioport:30f8(size=8) memoria:f6289c00-f6289cff memoria:f6289800-f628980f lsmod Module Size Used by usbhid 41906 0 hid 77367 1 usbhid rfcomm 38139 0 parport_pc 32114 0 ppdev 12849 0 bnep 17830 2 bluetooth 158438 10 rfcomm,bnep binfmt_misc 17292 1 joydev 17393 0 hp_wmi 13652 0 sparse_keymap 13658 1 hp_wmi nouveau 708198 3 ttm 65344 1 nouveau drm_kms_helper 45466 1 nouveau drm 197692 5 nouveau,ttm,drm_kms_helper i2c_algo_bit 13199 1 nouveau psmouse 87213 0 mxm_wmi 12859 1 nouveau serio_raw 13027 0 k8temp 12905 0 i2c_nforce2 12906 0 wmi 18744 2 hp_wmi,mxm_wmi video 19068 1 nouveau mac_hid 13077 0 lp 17455 0 parport 40930 3 parport_pc,ppdev,lp forcedeth 58096 0 Let me know if I can give you more information. Thank you very much in advance, Jonathan

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  • Ati2dvag Blue Screen Problem

    If your computer has just been getting slower and slower since you bought it and errors are becoming more frequent, it';s time for a tune up. This means running the latest updates, using security appl... [Author: Nathan Tyler - Computers and Internet - March 24, 2010]

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  • Audio on beagleboard xM

    - by Francesco
    I am running Ubuntu 12.04 Precise for omap on a beagleboard xM. I am trying to setup audio. No soundcards are listed in /proc/asound/cards. Alsamixer fails with cannot open mixer: No such file or directory Under /dev/snd/ I have only: seq timer Driver's name should be omap3beagle - twl4030. I am using alsa 1.0.24 that is installed by default with Ubuntu 12.04. I've googled a lot but I have not found anything yet. Thanks

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  • Dependency problem with mysql-server-core-5.5

    - by Tama
    When I start the Ubuntu software centre, it says I cannot do anything until the package catalog is repaired. However, repairing fails. I ran "sudo apt-get -f install" and found the problem to be: mysql-server-5.5 depends on mysql-server-core-5.5 (= 5.5.24-0ubuntu0.12.04.1); however: Version of mysql-server-core-5.5 on system is 5.5.28-0ubuntu0.12.04.2. So, the question is, how do I install that version and resolve the dependency problem?

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  • SOA Management in 3 minutes - Video explainer

    - by J Swaroop
    Today’s CIOs and IT executives face challenges that take valuable time away from more strategic business objectives. They have to keep their systems running 24/7, manage increasingly complex applications, and more as part of their SOA environment. Watch this quick 3 minute video explainer to learn how Oracle EM Management Pack Plus for SOA is engineered to deliver value right out of the box with a fully centralized management console - with a rich set of service and system level dashboards, administrators can view service levels for key business processes and SOA infrastructure components from a central location. Watch the 3 minute video explainer

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  • Unity desktop became transparent after installing VBox Guest Additions [closed]

    - by Stoune
    I have installed Ubuntu Desktop x64 12.01.1 as guest in VirtualBox. When I installed VirtualBox Guest Additions, Unity desktop (top bar and left program icons bar) becomes invisible. The problem was found in VirtualBox 4.1.20 and still exist in 4.1.22. Reinstalling doesn't help. Maybe someone knows how to overcome this issue? Host Os: Windows 7 x64 Host video driver: Intel Video Driver 8.15.10.24.13(latest) Video: embedded into Intel Q45

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  • The Template Method Design Pattern using C# .Net

    - by nijhawan.saurabh
    First of all I'll just put this pattern in context and describe its intent as in the GOF book:   Template Method: Define the skeleton of an algorithm in an operation, deferring some steps to Subclasses. Template Method lets subclasses redefine certain steps of an algorithm without changing the Algorithm's Structure.    Usage: When you are certain about the High Level steps involved in an Algorithm/Work flow you can use the Template Pattern which allows the Base Class to define the Sequence of the Steps but permits the Sub classes to alter the implementation of any/all steps.   Example in the .Net framework: The most common example is the Asp.Net Page Life Cycle. The Page Life Cycle has a few methods which are called in a sequence but we have the liberty to modify the functionality of any of the methods by overriding them.   Sample implementation of Template Method Pattern:   Let's see the class diagram first:            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:8.0pt; mso-para-margin-left:0in; line-height:107%; 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; mso-font-kerning:1.0pt; mso-ligatures:standard;}   And here goes the code:EmailBase.cs     1 using System;     2 using System.Collections.Generic;     3 using System.Linq;     4 using System.Text;     5 using System.Threading.Tasks;     6      7 namespace TemplateMethod     8 {     9     public abstract class EmailBase    10     {    11     12         public bool SendEmail()    13         {    14             if (CheckEmailAddress() == true) // Method1 in the sequence    15             {    16                 if (ValidateMessage() == true) // Method2 in the sequence    17                 {    18                     if (SendMail() == true) // Method3 in the sequence    19                     {    20                         return true;    21                     }    22                     else    23                     {    24                         return false;    25                     }    26     27                 }    28                 else    29                 {    30                     return false;    31                 }    32     33             }    34             else    35             {    36                 return false;    37     38             }    39     40     41         }    42     43         protected abstract bool CheckEmailAddress();    44         protected abstract bool ValidateMessage();    45         protected abstract bool SendMail();    46     47     48     }    49 }    50    EmailYahoo.cs      1 using System;     2 using System.Collections.Generic;     3 using System.Linq;     4 using System.Text;     5 using System.Threading.Tasks;     6      7 namespace TemplateMethod     8 {     9     public class EmailYahoo:EmailBase    10     {    11     12         protected override bool CheckEmailAddress()    13         {    14             Console.WriteLine("Checking Email Address : YahooEmail");    15             return true;    16         }    17         protected override bool ValidateMessage()    18         {    19             Console.WriteLine("Validating Email Message : YahooEmail");    20             return true;    21         }    22     23     24         protected override bool SendMail()    25         {    26             Console.WriteLine("Semding Email : YahooEmail");    27             return true;    28         }    29     30     31     }    32 }    33   EmailGoogle.cs      1 using System;     2 using System.Collections.Generic;     3 using System.Linq;     4 using System.Text;     5 using System.Threading.Tasks;     6      7 namespace TemplateMethod     8 {     9     public class EmailGoogle:EmailBase    10     {    11     12         protected override bool CheckEmailAddress()    13         {    14             Console.WriteLine("Checking Email Address : GoogleEmail");    15             return true;    16         }    17         protected override bool ValidateMessage()    18         {    19             Console.WriteLine("Validating Email Message : GoogleEmail");    20             return true;    21         }    22     23     24         protected override bool SendMail()    25         {    26             Console.WriteLine("Semding Email : GoogleEmail");    27             return true;    28         }    29     30     31     }    32 }    33   Program.cs      1 using System;     2 using System.Collections.Generic;     3 using System.Linq;     4 using System.Text;     5 using System.Threading.Tasks;     6      7 namespace TemplateMethod     8 {     9     class Program    10     {    11         static void Main(string[] args)    12         {    13             Console.WriteLine("Please choose an Email Account to send an Email:");    14             Console.WriteLine("Choose 1 for Google");    15             Console.WriteLine("Choose 2 for Yahoo");    16             string choice = Console.ReadLine();    17     18             if (choice == "1")    19             {    20                 EmailBase email = new EmailGoogle(); // Rather than newing it up here, you may use a factory to do so.    21                 email.SendEmail();    22     23             }    24             if (choice == "2")    25             {    26                 EmailBase email = new EmailYahoo(); // Rather than newing it up here, you may use a factory to do so.    27                 email.SendEmail();    28             }    29         }    30     }    31 }    32    Final Words: It's very obvious that why the Template Method Pattern is a popular pattern, everything at last revolves around Algorithms and if you are clear with the steps involved it makes real sense to delegate the duty of implementing the step's functionality to the sub classes. 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:8.0pt; mso-para-margin-left:0in; line-height:107%; 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; mso-font-kerning:1.0pt; mso-ligatures:standard;}

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  • Why Website Building is Valuable

    What is a website? Basically a website is a space in the computer which speaks of who you are. It serves an online brochure where you can see all the information you need 24/7. It is through the website where you can tell what a business or a product is.

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  • Mysql-server-5.5 broken after update

    - by WalrusTusks
    Using Ubuntu 12.04, desktop, I had LAMP installed on my computer, and was using it as a server. However, after doing the upgrades one day, apt-get throws an error that mysql-server can't be configured, as it depends on another package: jay@rumbles:~$ sudo apt-get dist-upgrade Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these. The following packages have unmet dependencies: mysql-server-5.5 : Depends: mysql-server-core-5.5 (= 5.5.22-0ubuntu1) but 5.5.24-0ubuntu0.12.04.1 is installed E: Unmet dependencies. Try using -f ` jay@rumbles:~$ sudo apt-get install -f Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following extra packages will be installed: mysql-server-5.5 Suggested packages: tinyca mailx The following packages will be upgraded: mysql-server-5.5 1 upgraded, 0 newly installed, 0 to remove and 35 not upgraded. 2 not fully installed or removed. Need to get 0 B/8,821 kB of archives. After this operation, 2,048 B of additional disk space will be used. Do you want to continue [Y/n]? y dpkg: dependency problems prevent configuration of mysql-server-5.5: mysql-server-5.5 depends on mysql-server-core-5.5 (= 5.5.22-0ubuntu1); however: Version of mysql-server-core-5.5 on system is 5.5.24-0ubuntu0.12.04.1. dpkg: error processing mysql-server-5.5 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of mysql-server: mysql-server depends on mysql-server-5.5; however: No apport report written because the error message indicates its a followup error from a previous failure. No apport report written because the error message indicates its a followup error from a previous failure. Package mysql-server-5.5 is not configured yet. dpkg: error processing mysql-server (--configure): dependency problems - leaving unconfigured Errors were encountered while processing: mysql-server-5.5 mysql-server E: Sub-process /usr/bin/dpkg returned an error code (1) How can I fix this?

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  • Silverlight Cream for November 22, 2011 -- #1172

    - by Dave Campbell
    In this Issue: XAMLGeek, WindowsPhoneGeek, Nigel Sampson, Jesse Liberty, Sumit Dutta(-2-), Dave Bost, Jared Bienz, Joost van Schaik, and Michael Crump. Above the Fold: Silverlight: "10 Laps around Silverlight 5 (Part 7 of 10)" Michael Crump WP7: "Using MVVMLight, ItemsControl, Blend and behaviors to make a ‘heads up compass’" Joost van Schaik Metro/WinRT/W8: "“Badevand” for Windows 8" XAMLGeek Shoutouts: Michael Palermo's latest Desert Mountain Developers is up Michael Washington's latest Visual Studio #LightSwitch Daily is up From SilverlightCream.com:“Badevand” for Windows 8XAMLGeek posted a Metro app that shows water and air temperature and rain level for 5 beaches in Copenhagen, Denmark... no source, but good to see people posting appsGetting Started with Windows Phone RemindersWindowsPhoneGeek digs into Reminders in this WP7.1 post... the code you need, description, and a project to downloadHelp my app has been revoked!Nigel Sampson had a surprise when his latest app was revoked on his device, and then another... read what the solution wasA Dozen Windows Phone Videos… And CountingJesse Liberty posted his 12th WP7.1 video on Channel 9 - all about Reminders in MangoPart 23 - Windows Phone 7 - Detect Operator and Network InformationSumit Dutta has 2 more parts to his WP7 quest up... this part 23 is about getting mobile operator information and hot to get network capabilities using Microsoft.Phone.Net.DeviceNetworkInformationPart 24 - Windows Phone 7 - Microphone RepeaterIn part 24, Sumit Dutta uses the Microsoft.Xna.Framework Microphone class to record and play back voice.31 Days of Mango | Day #13: Marketplace Test KitDave Bost is at the helm of Jeff Blankenburg's Day 13 in his 31 day quest, discussing the Marketplace Test Kit and showing how to use it to determine if your app is ready for certification31 Days of Mango | Day #12; Beta DistributionJeff Blankenburg's Day 12 is written by guest author Jared Bienz, and shows how to submit an application for Beta testingUsing MVVMLight, ItemsControl, Blend and behaviors to make a ‘heads up compass’Joost van Schaik has a tutorial up showing how to make a WP7 Compass app using MVVMLight, Expression Blend, and then shows his thoughts on using the ItemsControl and Behaviors... code, descriptions and a project to download.... and I think I got your name right for the first time, Joost :)10 Laps around Silverlight 5 (Part 7 of 10)Michael Crump put out part 7 of his Silverlight 5 series at SilverlightShow... this is actually part 2 of OS Integration with Silverlight covering, among other things, 64-bit browser support and Power AwarenessStay 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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  • Using the fsc mount option with nfsroot kernel parameter to allow FS-cache

    - by meanderix
    I'm PXE-booting a Ubuntu 10.10 system, where I specify the kernel parameters as follows: append root=/dev/nfs initrd=ubuntu-boot/initrd.img-2.6.35-24-generic nfsroot=11.22.33.44:/data/nfsroot,fsc ip=dhcp rw I need to use the mount option 'fsc' in order to use FS-cache functionality (the cachefilesd package.) However, when I try this I get the following error upon boot: nfsmount: bad option 'fsc' Why doesn't nfsmount permit this option? (It works fine when you mount manually with "mount -o fsc" after booting up.)

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  • Oracle Hyperion Customer Briefing 2011

    - by antonella.buonagurio(at)oracle.com
    Lo scorso 24 febbraio a Milano e il 9 marzo a Roma si è tenuto l'Oracle Hyperion Customer Briefing 2011 un workshop riservato ai clienti Oracle su tutte le novità Oracle Hyperion EPM SYstem 11.1.2. La giornata si è sviluppata attraverso un percorso guidato di quattro sessioni tematiche su  come poter migliorare ulteriormente processi di management nelle  aziende in tutti gli ambiti di interesse.  

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  • Pluggable Rules for Entity Framework Code First

    - by Ricardo Peres
    Suppose you want a system that lets you plug custom validation rules on your Entity Framework context. The rules would control whether an entity can be saved, updated or deleted, and would be implemented in plain .NET. Yes, I know I already talked about plugable validation in Entity Framework Code First, but this is a different approach. An example API is in order, first, a ruleset, which will hold the collection of rules: 1: public interface IRuleset : IDisposable 2: { 3: void AddRule<T>(IRule<T> rule); 4: IEnumerable<IRule<T>> GetRules<T>(); 5: } Next, a rule: 1: public interface IRule<T> 2: { 3: Boolean CanSave(T entity, DbContext ctx); 4: Boolean CanUpdate(T entity, DbContext ctx); 5: Boolean CanDelete(T entity, DbContext ctx); 6: String Name 7: { 8: get; 9: } 10: } Let’s analyze what we have, starting with the ruleset: Only has methods for adding a rule, specific to an entity type, and to list all rules of this entity type; By implementing IDisposable, we allow it to be cancelled, by disposing of it when we no longer want its rules to be applied. A rule, on the other hand: Has discrete methods for checking if a given entity can be saved, updated or deleted, which receive as parameters the entity itself and a pointer to the DbContext to which the ruleset was applied; Has a name property for helping us identifying what failed. A ruleset really doesn’t need a public implementation, all we need is its interface. The private (internal) implementation might look like this: 1: sealed class Ruleset : IRuleset 2: { 3: private readonly IDictionary<Type, HashSet<Object>> rules = new Dictionary<Type, HashSet<Object>>(); 4: private ObjectContext octx = null; 5:  6: internal Ruleset(ObjectContext octx) 7: { 8: this.octx = octx; 9: } 10:  11: public void AddRule<T>(IRule<T> rule) 12: { 13: if (this.rules.ContainsKey(typeof(T)) == false) 14: { 15: this.rules[typeof(T)] = new HashSet<Object>(); 16: } 17:  18: this.rules[typeof(T)].Add(rule); 19: } 20:  21: public IEnumerable<IRule<T>> GetRules<T>() 22: { 23: if (this.rules.ContainsKey(typeof(T)) == true) 24: { 25: foreach (IRule<T> rule in this.rules[typeof(T)]) 26: { 27: yield return (rule); 28: } 29: } 30: } 31:  32: public void Dispose() 33: { 34: this.octx.SavingChanges -= RulesExtensions.OnSaving; 35: RulesExtensions.rulesets.Remove(this.octx); 36: this.octx = null; 37:  38: this.rules.Clear(); 39: } 40: } Basically, this implementation: Stores the ObjectContext of the DbContext to which it was created for, this is so that later we can remove the association; Has a collection - a set, actually, which does not allow duplication - of rules indexed by the real Type of an entity (because of proxying, an entity may be of a type that inherits from the class that we declared); Has generic methods for adding and enumerating rules of a given type; Has a Dispose method for cancelling the enforcement of the rules. A (really dumb) rule applied to Product might look like this: 1: class ProductRule : IRule<Product> 2: { 3: #region IRule<Product> Members 4:  5: public String Name 6: { 7: get 8: { 9: return ("Rule 1"); 10: } 11: } 12:  13: public Boolean CanSave(Product entity, DbContext ctx) 14: { 15: return (entity.Price > 10000); 16: } 17:  18: public Boolean CanUpdate(Product entity, DbContext ctx) 19: { 20: return (true); 21: } 22:  23: public Boolean CanDelete(Product entity, DbContext ctx) 24: { 25: return (true); 26: } 27:  28: #endregion 29: } The DbContext is there because we may need to check something else in the database before deciding whether to allow an operation or not. And here’s how to apply this mechanism to any DbContext, without requiring the usage of a subclass, by means of an extension method: 1: public static class RulesExtensions 2: { 3: private static readonly MethodInfo getRulesMethod = typeof(IRuleset).GetMethod("GetRules"); 4: internal static readonly IDictionary<ObjectContext, Tuple<IRuleset, DbContext>> rulesets = new Dictionary<ObjectContext, Tuple<IRuleset, DbContext>>(); 5:  6: private static Type GetRealType(Object entity) 7: { 8: return (entity.GetType().Assembly.IsDynamic == true ? entity.GetType().BaseType : entity.GetType()); 9: } 10:  11: internal static void OnSaving(Object sender, EventArgs e) 12: { 13: ObjectContext octx = sender as ObjectContext; 14: IRuleset ruleset = rulesets[octx].Item1; 15: DbContext ctx = rulesets[octx].Item2; 16:  17: foreach (ObjectStateEntry entry in octx.ObjectStateManager.GetObjectStateEntries(EntityState.Added)) 18: { 19: Object entity = entry.Entity; 20: Type realType = GetRealType(entity); 21:  22: foreach (dynamic rule in (getRulesMethod.MakeGenericMethod(realType).Invoke(ruleset, null) as IEnumerable)) 23: { 24: if (rule.CanSave(entity, ctx) == false) 25: { 26: throw (new Exception(String.Format("Cannot save entity {0} due to rule {1}", entity, rule.Name))); 27: } 28: } 29: } 30:  31: foreach (ObjectStateEntry entry in octx.ObjectStateManager.GetObjectStateEntries(EntityState.Deleted)) 32: { 33: Object entity = entry.Entity; 34: Type realType = GetRealType(entity); 35:  36: foreach (dynamic rule in (getRulesMethod.MakeGenericMethod(realType).Invoke(ruleset, null) as IEnumerable)) 37: { 38: if (rule.CanDelete(entity, ctx) == false) 39: { 40: throw (new Exception(String.Format("Cannot delete entity {0} due to rule {1}", entity, rule.Name))); 41: } 42: } 43: } 44:  45: foreach (ObjectStateEntry entry in octx.ObjectStateManager.GetObjectStateEntries(EntityState.Modified)) 46: { 47: Object entity = entry.Entity; 48: Type realType = GetRealType(entity); 49:  50: foreach (dynamic rule in (getRulesMethod.MakeGenericMethod(realType).Invoke(ruleset, null) as IEnumerable)) 51: { 52: if (rule.CanUpdate(entity, ctx) == false) 53: { 54: throw (new Exception(String.Format("Cannot update entity {0} due to rule {1}", entity, rule.Name))); 55: } 56: } 57: } 58: } 59:  60: public static IRuleset CreateRuleset(this DbContext context) 61: { 62: Tuple<IRuleset, DbContext> ruleset = null; 63: ObjectContext octx = (context as IObjectContextAdapter).ObjectContext; 64:  65: if (rulesets.TryGetValue(octx, out ruleset) == false) 66: { 67: ruleset = rulesets[octx] = new Tuple<IRuleset, DbContext>(new Ruleset(octx), context); 68: 69: octx.SavingChanges += OnSaving; 70: } 71:  72: return (ruleset.Item1); 73: } 74: } It relies on the SavingChanges event of the ObjectContext to intercept the saving operations before they are actually issued. Yes, it uses a bit of dynamic magic! Very handy, by the way! So, let’s put it all together: 1: using (MyContext ctx = new MyContext()) 2: { 3: IRuleset rules = ctx.CreateRuleset(); 4: rules.AddRule(new ProductRule()); 5:  6: ctx.Products.Add(new Product() { Name = "xyz", Price = 50000 }); 7:  8: ctx.SaveChanges(); //an exception is fired here 9:  10: //when we no longer need to apply the rules 11: rules.Dispose(); 12: } Feel free to use it and extend it any way you like, and do give me your feedback! As a final note, this can be easily changed to support plain old Entity Framework (not Code First, that is), if that is what you are using.

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