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• ASP.NET MVC3 checkbox dropdownlist create [migrated]

  - by user95381

  i'm new in asp.net MVC and I/m use view model to poppulate the dropdown list and group of checkboxes. I use SQL Server 2012, where have many to many relationships between Students - Books; Student - Cities. I need collect StudentName, one city and many books for one student. I have next questions: 1. How can I get the values from database to my StudentBookCityViewModel? 2. How can I save the values to my database in [HttpPost] Create method? Here is the code: MODEL public class Student { public int StudentId { get; set; } public string StudentName { get; set; } public ICollection<Book> Books { get; set; } public ICollection<City> Cities { get; set; } } public class Book { public int BookId { get; set; } public string BookName { get; set; } public bool IsSelected { get; set; } public ICollection<Student> Students { get; set; } } public class City { public int CityId { get; set; } public string CityName { get; set; } public bool IsSelected { get; set; } public ICollection<Student> Students { get; set; } } VIEW MODEL public class StudentBookCityViewModel { public string StudentName { get; set; } public IList<Book> Books { get; set; } public StudentBookCityViewModel() { Books = new[] { new Book {BookName = "Title1", IsSelected = false}, new Book {BookName = "Title2", IsSelected = false}, new Book {BookName = "Title3", IsSelected = false} }.ToList(); } public string City { get; set; } public IEnumerable<SelectListItem> CityValues { get { return new[] { new SelectListItem {Value = "Value1", Text = "Text1"}, new SelectListItem {Value = "Value2", Text = "Text2"}, new SelectListItem {Value = "Value3", Text = "Text3"} }; } } } Context public class EFDbContext : DbContext{ public EFDbContext(string connectionString) { Database.Connection.ConnectionString = connectionString; } public DbSet<Book> Books { get; set; } public DbSet<Student> Students { get; set; } public DbSet<City> Cities { get; set; } protected override void OnModelCreating(DbModelBuilder modelBuilder) { modelBuilder.Entity<Book>() .HasMany(x => x.Students).WithMany(x => x.Books) .Map(x => x.MapLeftKey("BookId").MapRightKey("StudentId").ToTable("StudentBooks")); modelBuilder.Entity<City>() .HasMany(x => x.Students).WithMany(x => x.Cities) .Map(x => x.MapLeftKey("CityId").MapRightKey("StudentId").ToTable("StudentCities")); } } Controller public ActionResult Create() { return View(); } [HttpPost] public ActionResult Create() { //I don't understand how I can save values to db context.SaveChanges(); return RedirectToAction("Index"); } View @model UsingEFNew.ViewModels.StudentBookCityViewModel @using (Html.BeginForm()) { Your Name: @Html.TextBoxFor(model = model.StudentName) <div>Genre:</div> <div> @Html.DropDownListFor(model => model.City, Model.CityValues) </div> <div>Books:</div> <div> @for (int i = 0; i < Model.Books.Count; i++) { <div> @Html.HiddenFor(x => x.Books[i].BookId) @Html.CheckBoxFor(x => x.Books[i].IsSelected) @Html.LabelFor(x => x.Books[i].IsSelected, Model.Books[i].BookName) </div> } </div> <div> <input id="btnSubmit" type="submit" value="Submit" /> </div> </div> }

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• EPM 11.1.2 - R&A DATABASE CONNECTIONS DISAPPEAR FROM THE "DATABASE CONNECTION MANAGER

  - by Powder

  When accessing the database connection panel through Reporting and Analysis all previously entered database connection do not appear. This is due to a bug in the Windows SMB2 protocol. To work around this bug you have to disable the protocol. On Windows 2008 the protocol is automatically enabled. This needs to be done on both the servers and the clients. Note that “server” is the server which hosts RAF repository service and RM1 folder, “client” – server which hosts replicated Repository service that accesses repository files via network i.e. \\<server_host>\RM1  In order to disable SMB 2.0 on the server side, follow these steps:  1. Run "regedit" on Windows Server 2008 based computer.  2. Expand and locate the sub tree as follows.  HKLM\System\CurrentControlSet\Services\LanmanServer\Parameters  3. Add a new REG_DWORD key with the name of "Smb2" (without quotation mark)  Value name: Smb2  Value type: REG_DWORD  0 = disabled  1 = enabled 4. Set the value to 0 to disable SMB 2.0, or set it to 1 to re-enable SMB 2.0.  5. Reboot the server.  To disable SMB 2.0 for Windows Vista or Windows Server 2008 systems that are the “client” systems run the following commands:  sc config lanmanworkstation depend= bowser/mrxsmb10/nsi  sc config mrxsmb20 start= disabled  Note there's an extra " " (space) after the "=" sign.  To enable back SMB 2.0 for Windows Vista or Windows Server 2008 systems that  are the “client” systems run the following commands: sc config lanmanworkstation depend= bowser/mrxsmb10/mrxsmb20/nsi  sc config mrxsmb20 start= auto  Again, note there's an extra " " (space) after the "=" sign. 

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• unit testing variable state explicit tests in dynamically typed languages

  - by kris welsh

  I have heard that a desirable quality of unit tests is that they test for each scenario independently. I realised whilst writing tests today that when you compare a variable with another value in a statement like: assertEquals("foo", otherObject.stringFoo); You are really testing three things: The variable you are testing exists and is within scope. The variable you are testing is the expected type. The variable you are testing's value is what you expect it to be. Which to me raises the question of whether you should test for each of these implicitly so that a test fail would occur on the specific line that tests for that problem: assertTrue(stringFoo); assertTrue(stringFoo.typeOf() == "String"); assertEquals("foo", otherObject.stringFoo); For example if the variable was an integer instead of a string the test case failure would be on line 2 which would give you more feedback on what went wrong. Should you test for this kind of thing explicitly or am i overthinking this?

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• JavaScript in different browsers

  - by PointsToShare

  Adventures with JavaScript rendered in IE 8, Chrome 15, and Firefox 8.0 I have written a little monogram about the advantages of Math and wrote a few JavaScript applications to demonstrate them. I was a bit careless and used elements on the page in my JavaScript without using any of the GetElementsByXXXX methods to identify them.  Say I had a text box named tbSeqNum into which I entered a number to be used in a computation. In my code I simply referred to its value by using it directly. Like here: Function Blah() {                 return tbSeqNum.value; } This ran fine in IE8. In IE, the elements are available as global variables. This is not the case in either Firefox or Chrome. In there one has to create the variable and only then use it. Assuming I also used tbSeqNum as the element’s ID, this works: Function Blah() {                 return GetElementById(“tbSeqNum”).value; } Naturally this corrected function also works in IE, so be warned. Also, coming from windows programming (I am long in the tooth and programmed long before the internet), I have a habit of putting an “Exit” button on my pages and setting their onclick to: onclick=”window.close()”. Again, this works fine in IE. In Firefox and chrome, it does not! There you can only close a window that you opened in the code. A window that was opened by navigation to a URL will not close.  Before I deployed mu code to my website, I painfully removed all my Exit buttons. But my greatest surprise came when I tested my pages in the various browsers. In my code I do a comparison on the performance of two algorithms used to solve the same problem. One is brute force, the other uses a mathematical formula. The compare functions runs each many times and displays the time it took for each and also the ratio. Chrome runs JavaScript between 5 and 10 times faster than Firefox and between 50 and 100 times faster that IE. Wow!!! This difference is especially remarkable when the code uses iteration. I suspect that the JS engines in Chrome and Firefox simply cache the result of a function and if it is called again with the same parameters, it returns the cached result. To see it in action play run the “How Many Squares” page in www.mgsltns.com/games.htm The host is running on Unix, so the link is case sensitive. Last Note: IE9 runs JS a bit faster, but still lags behind almost as badly. That’s All Folks!

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• REGISTER TODAY: Oracle Linux Online Forum, March 27

  - by Zeynep Koch

  Online Forum Showcases Technology Innovations and Strategic Value of Oracle Linux Join us for a series of information-rich Webcasts and “Live Online Chat” with some of the most knowledgeable Linux experts. Fresh off Oracle’s launch of Oracle Linux with the latest Unbreakable Enterprise Kernel Release 2, we’ll cover a host of key technology and strategic developments. Agenda:  1) 9:30 - 9:45 am PT :  Keynote: Leading Innovations in Enterprise Linux hosted by Oracle Executives Speakers: Edward Screven, Wim Coekaerts 2) 9:45 - 10:00 am PT Customer Presentation: How Oracle Helps Reduce Cost and Improve Performance of Database Applications at Progressive Insurance Speaker: John Dome 3) 10:00 - 11:00 am PT What's New in Oracle Linux Speakers: Waseem Daher, Chris Mason, Elena Zannoni, Lenz Grimmer 4) 11:00 am - 12:00 pm PT Get More Value from your Linux Vendor Speakers: Sergio Leunissen, Chris Mason, Monica Kumar Register today

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• How to use SharePoint modal dialog box to display Custom Page Part3

  - by ybbest

  In the second part of the series, I showed you how to display and close a custom page in a SharePoint modal dialog using JavaScript and display a message after the modal dialog is closed. In this post, I’d like to show you how to use SPLongOperation with the Modal dialog box. You can download the source code here. 1. Firstly, modify the element file as follow <Elements xmlns="http://schemas.microsoft.com/sharepoint/"> <CustomAction Id="ReportConcern" RegistrationType="ContentType" RegistrationId="0x010100866B1423D33DDA4CA1A4639B54DD4642" Location="EditControlBlock" Sequence="107" Title="Display Custom Page" Description="To Display Custom Page in a modal dialog box on this item"> <UrlAction Url="javascript: function emitStatus(messageToDisplay) { statusId = SP.UI.Status.addStatus(messageToDisplay.message + ' ' +messageToDisplay.location ); SP.UI.Status.setStatusPriColor(statusId, 'Green'); } function portalModalDialogClosedCallback(result, value) { if (value !== null) { emitStatus(value); } } var options = { url: '{SiteUrl}' + '/_layouts/YBBEST/TitleRename.aspx?List={ListId}&amp;ID={ItemId}', title: 'Rename title', allowMaximize: false, showClose: true, width: 500, height: 300, dialogReturnValueCallback: portalModalDialogClosedCallback }; SP.UI.ModalDialog.showModalDialog(options);" /> </CustomAction> </Elements> 2. In your code behind, you can implement a close dialog function as below. This will close your modal dialog box once the button is clicked and display a status bar. Note that you need to use window.frameElement.commonModalDialogClose instead of window.frameElement.commonModalDialogClose protected void SubmitClicked(object sender, EventArgs e) { //Process stuff string message = "You clicked the Submit button"; string newLocation="http://www.google.com"; string information = string.Format("{{'message':'{0}','location':'{1}' }}", message, newLocation); var longOperation = new SPLongOperation(Page); longOperation.LeadingHTML = "Processing the  application"; longOperation.TrailingHTML = "Please wait while the application is being processed."; longOperation.Begin(); Thread.Sleep(5*1000); var closeDialogScript = GetCloseDialogScriptForLongProcess(information); longOperation.EndScript(closeDialogScript); } protected static string GetCloseDialogScriptForLongProcess(string message) { var scriptBuilder = new StringBuilder(); scriptBuilder.Append("window.frameElement.commonModalDialogClose(1,").Append(message).Append(");"); return scriptBuilder.ToString(); }   References: How to: Display a Page as a Modal Dialog Box

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• Best way to go about sorting 2D sprites in a "RPG Maker" styled RPG

  - by Aaron Stewart

  I am trying to come up with the best way to create overlapping sprites without having any issues. I was thinking of having a SortedDictionary and setting the Entity's key to it's Y position relative to the max bound of the simulation, aka the Z value. I'd update the "Z" value in the update method each frame, if the entity's position has changed at all. For those who don't know what I mean, I want characters who are standing closer in front of another character to be drawn on top, and if they are behind the character, they are drawn behind. I'm leery of using SpriteBatch back to front or front to back, I've been doing some searching and have been under the impression they are a bad idea. and want to know exactly how other people are dealing with their depth sorting. Just ultimately trying to come up with the best method of sorting for good practice before I get too far in to refactor the system effectively.

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• System Variables, Stored Procedures or Functions for Meta Data

  - by BuckWoody

  Whenever you want to know something about SQL Server’s configuration, whether that’s the Instance itself or a database, you have a few options. If you want to know “dynamic” data, such as how much memory or CPU is consumed or what a particular query is doing, you should be using the Dynamic Management Views (DMVs) that you can read about here: http://msdn.microsoft.com/en-us/library/ms188754.aspx  But if you’re looking for how much memory is installed on the server, the version of the Instance, the drive letters of the backups and so on, you have other choices. The first of these are system variables. You access these with a SELECT statement, and they are useful when you need a discrete value for use, say in another query or to put into a table. You can read more about those here: http://msdn.microsoft.com/en-us/library/ms173823.aspx You also have a few stored procedures you can use. These often bring back a lot more data, pre-formatted for the screen. You access these with the EXECUTE syntax. It is a bit more difficult to take the data they return and get a single value or place the results in another table, but it is possible. You can read more about those here: http://msdn.microsoft.com/en-us/library/ms187961.aspx Yet another option is to use a system function, which you access with a SELECT statement, which also brings back a discrete value that you can use in a test or to place in another table. You can read about those here: http://msdn.microsoft.com/en-us/library/ms187812.aspx  By the way, many of these constructs simply query from tables in the master or msdb databases for the Instance or the system tables in a user database. You can get much of the information there as well, and there are even system views in each database to show you the meta-data dealing with structure – more on that here: http://msdn.microsoft.com/en-us/library/ms186778.aspx  Some of these choices are the only way to get at a certain piece of data. But others overlap – you can use one or the other, they both come back with the same data. So, like many Microsoft products, you have multiple ways to do the same thing. And that’s OK – just research what each is used for and how it’s intended to be used, and you’ll be able to select (pun intended) the right choice. Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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• links for 2010-04-22

  - by Bob Rhubart

  Barry N. Perkins: Unique Business Value vs. Unique IT "Some solutions may look good today, solving a budget challenge by reducing cost, or solving a specific tactical challenge, but result in highly complex environments, that may be difficult to manage and maintain and limit the future potential of your business. Put differently, some solutions might push today's challenge into the future, resulting in a more complex and expensive solution." -- Barry N. Perkins, VP Oracle Modernization & Oracle Integrated Solutions (tags: oracle otn enterprisearchitecture modernization) Paul Homchick: The Information Driven Value Chain - Part 2 Paul Homchick continues his series with a look "at the way investments have been made in enterprise software in an effort to create and manage value, and how systems are moving from a controlled-process approach design towards gathering and using dynamically using information." (tags: oracle otn enterprisearchitecture) @vambenepe: The battle of the Cloud Frameworks: Application Servers redux? "The battle of the Cloud Frameworks has started," says William Vambenepe, "and it will look a lot like the battle of the Application Servers which played out over the last decade and a half." (tags: oracle otn cloud frameworks appserver) @ORACLENERD: COLLABORATE: Day 4 Wrap Up Oraclenerd feesses up: "The day started out with the realization that I pulled off the best (COLLABORATE - self annointed) prank ever. Twitter was...all atwitter about the fact that Mark Rittman was Oracle's Person of the Year. Of course it wasn't true. If you look at the picture, you'll realize that he's wearing exactly the same clothes in the magazine cover as he is in real life." (tags: collaborate2010 oracleace) Oracle's Hal Stern at Cloud Expo: "We've Moved from 'What' to 'How'" | Cloud Computing Journal "Hal also spoke a bit about building 'a sustainable IT model.' By this, he said he didn't mean the various Green IT and similar efforts that 'are all about data center efficiency. I think the operational model is just as important. Many enterprises are managing a tremendous amount of complexity, and it's hard to make this sustainable.'" -- Cloud News Desk (tags: oracle cloud cloudexpo halstern) @ORACLENERD: COLLABORATE: The Beach Party "Then tiki statues somehow were incorporated into various dances" -- Oracle ACE Chet "oraclenerd" Justice (tags: 0racle otn oracleace collaborate2010 oaug ioug lasvegas) David Andrews: Collaborate Day Two "Collaborate 2010 has focused on helping attendees understand what is already available and how to make more effective use of it. This does not sound exciting but it is extremely valuable. Most customers use only a small fraction of the capability of the products they already own. Helping them understand all the additional things they could be doing without buying anything more is very valuable." -- David Andrews (tags: oracle oaug collaborate2010 ioug)

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• Enabling XML-documentation for code contracts

  - by DigiMortal

  One nice feature that code contracts offer is updating of code documentation. If you are using source code documenting features of Visual Studio then code contracts may automate some tasks you otherwise have to implement manually. In this posting I will show you some XML documentation files with documented contracts. I will also explain how this feature works. Enabling XML-documentation in project settings As a first thing let’s enable generating of code documentation under project settings. Open project properties, move to Build page and make check to checkbox called “XML documentation file”. Save project settings and rebuild project. When project is built go to bin/Debug folder and open the XML-file. Here is my XML. <?xml version="1.0"?> <doc>     <assembly>         <name>Eneta.Examples.CodeContracts.Testable</name>     </assembly>     <members>         <member name="T:Eneta.Examples.CodeContracts.Testable.Randomizer">             <summary>             Class for generating random integers in user specified range.             </summary>         </member>         <member name="M:Eneta.Examples.CodeContracts.Testable.Randomizer.#ctor(Eneta.Examples.CodeContracts.Testable.IRandomGenerator)">             <summary>             Constructor of Randomizer. Initializes Randomizer class.             </summary>             <param name="generator">Instance of random number generator.</param>         </member>         <member name="M:Eneta.Examples.CodeContracts.Testable.Randomizer.GetRandomFromRangeContracted(System.Int32,System.Int32)">             <summary>             Returns random integer in given range.             </summary>             <param name="min">Minimum value of random integer.</param>             <param name="max">Maximum value of random integer.</param>         </member>     </members> </doc> You can see nothing about code contracts here. Enabling code contracts documentation Code contracts have their own settings and conditions for documentation. Open project properties and move to Code Contracts tab. From “Contract Reference Assembly” dropdown check Build and make check to checkbox “Emit contracts into XML doc file”. And again – save project setting, build the project and move to bin/Debug folder. Now you can see that there are two files for XML-documentation: <assembly name>.XML <assembly name>.old.XML First files is documentation with contracts, second file is original documentation without contracts. Let’s see now what is inside our new XML-documentation file. <?xml version="1.0"?> <doc>   <assembly>     <name>Eneta.Examples.CodeContracts.Testable</name>   </assembly>   <members>     <member name="T:Eneta.Examples.CodeContracts.Testable.Randomizer">       <summary>             Class for generating random integers in user specified range.             </summary>     </member>     <member name="M:Eneta.Examples.CodeContracts.Testable.Randomizer.#ctor(Eneta.Examples.CodeContracts.Testable.IRandomGenerator)">       <summary>             Constructor of Randomizer. Initializes Randomizer class.             </summary>       <param name="generator">Instance of random number generator.</param>     </member>     <member name="M:Eneta.Examples.CodeContracts.Testable.Randomizer.GetRandomFromRangeContracted(System.Int32,System.Int32)">       <summary>             Returns random integer in given range.             </summary>       <param name="min">Minimum value of random integer.</param>       <param name="max">Maximum value of random integer.</param>       <requires description="Min must be less than max" exception="T:System.ArgumentOutOfRangeException">                 min &lt; max</requires>       <exception cref="T:System.ArgumentOutOfRangeException">                 min &gt;= max</exception>       <ensures description="Return value is out of range">                 Contract.Result&lt;int&gt;() &gt;= min &amp;&amp;                 Contract.Result&lt;int&gt;() &lt;= max</ensures>     </member>   </members> </doc> As you can see then code contracts are pretty well documented. Messages that I provided with code contracts are also available in documentation. If I wrote very good and informative messages then these messages are very useful also in contracts documentation. Code contracts and Sandcastle Sandcastle knows nothing about code contracts by default. There is separate package of file for Sandcastle that is provided you by code contracts installation. You can read from code contracts manual: “Sandcastle (http://www.codeplex.com/Sandcastle) is a freely available tool that generates help les and web sites describing your APIs, based on the XML doc comments in your source code. The CodeContracts install contains a set of les that can be copied over a Sandcastle installation to take advantage of the additional contract information. The produced documentation adds a contract section to methods with declared requires and/or ensures. In order for Sandcastle to produce Contract sections, you need to patch a number of files in its installation. Please refer to the Sandcastle Readme.txt found under Start Menu/CodeContracts/Sandcastle for instructions. A future release of Sandcastle will hopefully support contract sections without the need for this patching step.” Integrating code contracts documentation to Sandcastle will be one of my next postings about code contracts. Conclusion if you are using code documentation then documentation about code contracts can be added to documentation very easily. All you have to do is to enable XML-documentation for contracts and build your project. Later you can use Sandcastle files provided by code contracts installer to integrate contracts documentation to your output documentation package.

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• Building LMMS: "Configuring incomplete, errors occurred!"

  - by fridojet

  I tried to build Linux MultiMedia studio from the source of the SourceForge git:// repository under Ubuntu 12.04 LTS 32b: git clone git://lmms.git.sourceforge.net/gitroot/lmms/lmms cd lmms git checkout First I tried to install all the required libraries and then I cmaked. - That's what happened on cmake (errors occurred!): [DIR]lmms/build$ cmake .. -- The C compiler identification is GNU -- The CXX compiler identification is GNU -- Check for working C compiler: /usr/bin/gcc -- Check for working C compiler: /usr/bin/gcc -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Check for working CXX compiler: /usr/bin/c++ -- Check for working CXX compiler: /usr/bin/c++ -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done PROCESSOR: i686 Machine: i686-linux-gnu -- Target host is 32 bit -- Looking for include files LMMS_HAVE_STDINT_H -- Looking for include files LMMS_HAVE_STDINT_H - found -- Looking for include files LMMS_HAVE_STDBOOL_H -- Looking for include files LMMS_HAVE_STDBOOL_H - found -- Looking for include files LMMS_HAVE_STDLIB_H -- Looking for include files LMMS_HAVE_STDLIB_H - found -- Looking for include files LMMS_HAVE_PTHREAD_H -- Looking for include files LMMS_HAVE_PTHREAD_H - found -- Looking for include files LMMS_HAVE_SEMAPHORE_H -- Looking for include files LMMS_HAVE_SEMAPHORE_H - found -- Looking for include files LMMS_HAVE_UNISTD_H -- Looking for include files LMMS_HAVE_UNISTD_H - found -- Looking for include files LMMS_HAVE_SYS_TYPES_H -- Looking for include files LMMS_HAVE_SYS_TYPES_H - found -- Looking for include files LMMS_HAVE_SYS_IPC_H -- Looking for include files LMMS_HAVE_SYS_IPC_H - found -- Looking for include files LMMS_HAVE_SYS_SHM_H -- Looking for include files LMMS_HAVE_SYS_SHM_H - found -- Looking for include files LMMS_HAVE_SYS_TIME_H -- Looking for include files LMMS_HAVE_SYS_TIME_H - found -- Looking for include files LMMS_HAVE_SYS_WAIT_H -- Looking for include files LMMS_HAVE_SYS_WAIT_H - found -- Looking for include files LMMS_HAVE_SYS_SELECT_H -- Looking for include files LMMS_HAVE_SYS_SELECT_H - found -- Looking for include files LMMS_HAVE_STDARG_H -- Looking for include files LMMS_HAVE_STDARG_H - found -- Looking for include files LMMS_HAVE_SIGNAL_H -- Looking for include files LMMS_HAVE_SIGNAL_H - found -- Looking for include files LMMS_HAVE_SCHED_H -- Looking for include files LMMS_HAVE_SCHED_H - found -- Looking for include files LMMS_HAVE_SYS_SOUNDCARD_H -- Looking for include files LMMS_HAVE_SYS_SOUNDCARD_H - found -- Looking for include files LMMS_HAVE_SOUNDCARD_H -- Looking for include files LMMS_HAVE_SOUNDCARD_H - not found. -- Looking for include files LMMS_HAVE_FCNTL_H -- Looking for include files LMMS_HAVE_FCNTL_H - found -- Looking for include files LMMS_HAVE_SYS_IOCTL_H -- Looking for include files LMMS_HAVE_SYS_IOCTL_H - found -- Looking for include files LMMS_HAVE_CTYPE_H -- Looking for include files LMMS_HAVE_CTYPE_H - found -- Looking for include files LMMS_HAVE_STRING_H -- Looking for include files LMMS_HAVE_STRING_H - found -- Looking for include files LMMS_HAVE_PROCESS_H -- Looking for include files LMMS_HAVE_PROCESS_H - not found. -- Looking for include files LMMS_HAVE_LOCALE_H -- Looking for include files LMMS_HAVE_LOCALE_H - found -- Looking for Q_WS_X11 -- Looking for Q_WS_X11 - found -- Looking for Q_WS_WIN -- Looking for Q_WS_WIN - not found. -- Looking for Q_WS_QWS -- Looking for Q_WS_QWS - not found. -- Looking for Q_WS_MAC -- Looking for Q_WS_MAC - not found. -- Found Qt4: /usr/bin/qmake (found suitable version "4.8.1", required is "4.6.0;COMPONENTS;QtCore;QtGui;QtXml;QtNetwork") -- Found Qt translations in /usr/share/qt4/translations -- checking for module 'sndfile>=1.0.11' -- found sndfile, version 1.0.25 -- Looking for include files CMAKE_HAVE_PTHREAD_H -- Looking for include files CMAKE_HAVE_PTHREAD_H - found -- Looking for pthread_create in pthreads -- Looking for pthread_create in pthreads - not found -- Looking for pthread_create in pthread -- Looking for pthread_create in pthread - found -- Found Threads: TRUE -- Found libzip: /usr/lib/libzip.so -- Found libflac++: /usr/lib/i386-linux-gnu/libFLAC.so;/usr/lib/i386-linux-gnu/libFLAC++.so -- Found STK: /usr/lib/i386-linux-gnu/libstk.so -- checking for module 'portaudio-2.0' -- found portaudio-2.0, version 19 -- Found Portaudio: portaudio;asound;m;pthread -- checking for module 'libpulse' -- found libpulse, version 1.1 -- Found PulseAudio Simple: /usr/lib/i386-linux-gnu/libpulse.so -- Looking for vorbis_bitrate_addblock in vorbis -- Looking for vorbis_bitrate_addblock in vorbis - found -- Found OggVorbis: /usr/lib/i386-linux-gnu/libogg.so;/usr/lib/i386-linux-gnu/libvorbis.so;/usr/lib/i386-linux-gnu/libvorbisfile.so;/usr/lib/i386-linux-gnu/libvorbisenc.so -- Looking for snd_seq_create_simple_port in asound -- Looking for snd_seq_create_simple_port in asound - found -- Found ALSA: /usr/lib/i386-linux-gnu/libasound.so -- Looking for include files LMMS_HAVE_MACHINE_SOUNDCARD_H -- Looking for include files LMMS_HAVE_MACHINE_SOUNDCARD_H - not found. -- Looking for include files LMMS_HAVE_LINUX_AWE_VOICE_H -- Looking for include files LMMS_HAVE_LINUX_AWE_VOICE_H - not found. -- Looking for include files LMMS_HAVE_AWE_VOICE_H -- Looking for include files LMMS_HAVE_AWE_VOICE_H - not found. -- Looking for include files LMMS_HAVE__USR_SRC_SYS_I386_ISA_SOUND_AWE_VOICE_H -- Looking for include files LMMS_HAVE__USR_SRC_SYS_I386_ISA_SOUND_AWE_VOICE_H - not found. -- Looking for include files LMMS_HAVE__USR_SRC_SYS_GNU_I386_ISA_SOUND_AWE_VOICE_H -- Looking for include files LMMS_HAVE__USR_SRC_SYS_GNU_I386_ISA_SOUND_AWE_VOICE_H - not found. -- Looking for C++ include sys/asoundlib.h -- Looking for C++ include sys/asoundlib.h - found -- Looking for C++ include alsa/asoundlib.h -- Looking for C++ include alsa/asoundlib.h - found -- Looking for snd_pcm_resume in asound -- Looking for snd_pcm_resume in asound - found -- checking for module 'jack>=0.77' -- found jack, version 0.121.2 -- checking for module 'fftw3f>=3.0.0' -- package 'fftw3f>=3.0.0' not found CMake Error at /usr/share/cmake-2.8/Modules/FindPkgConfig.cmake:266 (message): A required package was not found Call Stack (most recent call first): /usr/share/cmake-2.8/Modules/FindPkgConfig.cmake:320 (_pkg_check_modules_internal) CMakeLists.txt:309 (PKG_CHECK_MODULES) -- checking for module 'fluidsynth>=1.0.7' -- found fluidsynth, version 1.1.5 -- Looking for include files LMMS_HAVE_LV2CORE -- Looking for include files LMMS_HAVE_LV2CORE - found -- Looking for include files LMMS_HAVE_SLV2_SCALEPOINTS_H -- Looking for include files LMMS_HAVE_SLV2_SCALEPOINTS_H - not found. -- Looking for slv2_world_new in slv2 -- Looking for slv2_world_new in slv2 - found -- Looking for librdf_new_world in rdf -- Looking for librdf_new_world in rdf - found -- Looking for wine_init in wine -- Looking for wine_init in wine - found -- Looking for C++ include windows.h -- Looking for C++ include windows.h - found -- checking for module 'samplerate>=0.1.7' -- package 'samplerate>=0.1.7' not found -- Performing Test HAVE_LRINT -- Performing Test HAVE_LRINT - Success -- Performing Test HAVE_LRINTF -- Performing Test HAVE_LRINTF - Success -- Performing Test CPU_CLIPS_POSITIVE -- Performing Test CPU_CLIPS_POSITIVE - Failed -- Performing Test CPU_CLIPS_NEGATIVE -- Performing Test CPU_CLIPS_NEGATIVE - Success -- Looking for XOpenDisplay in /usr/lib/i386-linux-gnu/libX11.so;/usr/lib/i386-linux-gnu/libXext.so -- Looking for XOpenDisplay in /usr/lib/i386-linux-gnu/libX11.so;/usr/lib/i386-linux-gnu/libXext.so - found -- Looking for gethostbyname -- Looking for gethostbyname - found -- Looking for connect -- Looking for connect - found -- Looking for remove -- Looking for remove - found -- Looking for shmat -- Looking for shmat - found -- Looking for IceConnectionNumber in ICE -- Looking for IceConnectionNumber in ICE - found -- Found X11: /usr/lib/i386-linux-gnu/libX11.so -- Found Freetype: /usr/lib/i386-linux-gnu/libfreetype.so Installation Summary -------------------- * Install Directory : /usr/local * Use system's libsamplerate : Supported audio interfaces -------------------------- * ALSA : OK * JACK : OK * OSS : OK * PortAudio : OK * PulseAudio : OK * SDL : OK Supported MIDI interfaces ------------------------- * ALSA : OK * OSS : OK * WinMM : <not supported on this platform> Supported file formats for project export ----------------------------------------- * WAVE : OK * OGG/VORBIS : OK * FLAC : OK Optional plugins ---------------- * SoundFont2 player : OK * Stk Mallets : OK * VST-instrument hoster : OK * VST-effect hoster : OK * LV2 hoster : OK * CALF LADSPA plugins : OK * CAPS LADSPA plugins : OK * CMT LADSPA plugins : OK * TAP LADSPA plugins : OK * SWH LADSPA plugins : OK * FL .zip import : OK ----------------------------------------------------------------- IMPORTANT: after installing missing packages, remove CMakeCache.txt before running cmake again! ----------------------------------------------------------------- -- Configuring incomplete, errors occurred! Here are some parts the contents of my lmms/build/CMakeCache.txt file: # This is the CMakeCache file. # For build in directory: /home/jk/Downloads/lmms-git/lmms/build # It was generated by CMake: /usr/bin/cmake # You can edit this file to change values found and used by cmake. # If you do not want to change any of the values, simply exit the editor. # If you do want to change a value, simply edit, save, and exit the editor. # The syntax for the file is as follows: # KEY:TYPE=VALUE # KEY is the name of a variable in the cache. # TYPE is a hint to GUI's for the type of VALUE, DO NOT EDIT TYPE!. # VALUE is the current value for the KEY. ######################## # EXTERNAL cache entries ######################## //Path to a file. ALSA_INCLUDES:PATH=/usr/include //Path to a library. ASOUND_LIBRARY:FILEPATH=/usr/lib/i386-linux-gnu/libasound.so //Path to a program. CMAKE_AR:FILEPATH=/usr/bin/ar //Choose the type of build, options are: None(CMAKE_CXX_FLAGS or // CMAKE_C_FLAGS used) Debug Release RelWithDebInfo MinSizeRel. CMAKE_BUILD_TYPE:STRING= //Enable/Disable color output during build. CMAKE_COLOR_MAKEFILE:BOOL=ON //CXX compiler. CMAKE_CXX_COMPILER:FILEPATH=/usr/bin/c++ //Flags used by the compiler during all build types. CMAKE_CXX_FLAGS:STRING= //Flags used by the compiler during debug builds. CMAKE_CXX_FLAGS_DEBUG:STRING=-g //Flags used by the compiler during release minsize builds. CMAKE_CXX_FLAGS_MINSIZEREL:STRING=-Os -DNDEBUG //Flags used by the compiler during release builds (/MD /Ob1 /Oi // /Ot /Oy /Gs will produce slightly less optimized but smaller // files). CMAKE_CXX_FLAGS_RELEASE:STRING=-O3 -DNDEBUG //Flags used by the compiler during Release with Debug Info builds. CMAKE_CXX_FLAGS_RELWITHDEBINFO:STRING=-O2 -g //C compiler. CMAKE_C_COMPILER:FILEPATH=/usr/bin/gcc //Flags used by the compiler during all build types. CMAKE_C_FLAGS:STRING= //Flags used by the compiler during debug builds. CMAKE_C_FLAGS_DEBUG:STRING=-g //Flags used by the compiler during release minsize builds. CMAKE_C_FLAGS_MINSIZEREL:STRING=-Os -DNDEBUG //Flags used by the compiler during release builds (/MD /Ob1 /Oi // /Ot /Oy /Gs will produce slightly less optimized but smaller // files). CMAKE_C_FLAGS_RELEASE:STRING=-O3 -DNDEBUG //Flags used by the compiler during Release with Debug Info builds. CMAKE_C_FLAGS_RELWITHDEBINFO:STRING=-O2 -g //Flags used by the linker. CMAKE_EXE_LINKER_FLAGS:STRING=' ' //Flags used by the linker during debug builds. CMAKE_EXE_LINKER_FLAGS_DEBUG:STRING= //Flags used by the linker during release minsize builds. CMAKE_EXE_LINKER_FLAGS_MINSIZEREL:STRING= //Flags used by the linker during release builds. CMAKE_EXE_LINKER_FLAGS_RELEASE:STRING= //Flags used by the linker during Release with Debug Info builds. CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO:STRING= //Enable/Disable output of compile commands during generation. CMAKE_EXPORT_COMPILE_COMMANDS:BOOL=OFF //Install path prefix, prepended onto install directories. CMAKE_INSTALL_PREFIX:PATH=/usr/local //Path to a program. CMAKE_LINKER:FILEPATH=/usr/bin/ld //Path to a program. CMAKE_MAKE_PROGRAM:FILEPATH=/usr/bin/make //Flags used by the linker during the creation of modules. CMAKE_MODULE_LINKER_FLAGS:STRING=' ' //Flags used by the linker during debug builds. CMAKE_MODULE_LINKER_FLAGS_DEBUG:STRING= //Flags used by the linker during release minsize builds. CMAKE_MODULE_LINKER_FLAGS_MINSIZEREL:STRING= //Flags used by the linker during release builds. CMAKE_MODULE_LINKER_FLAGS_RELEASE:STRING= //Flags used by the linker during Release with Debug Info builds. CMAKE_MODULE_LINKER_FLAGS_RELWITHDEBINFO:STRING= ==[...]== That's a list of the contents of my lmms/build folder: [DIR]lmms/build$ dir CMakeCache.txt CPackSourceConfig.cmake lmmsconfig.h plugins CMakeFiles data lmms.rc CPackConfig.cmake include lmmsversion.h My Question: It just tells me that that "errors" occurred, but I can't see any error message. It seems like everything went fine. - So: Any idea what the problem could be? - Thanks.

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• TOMORROW! UPK for Testing Webinar

  - by Karen Rihs

  UPK Webinar:  UPK for Testing September 13, 2012 10 am pacific / 1 pm eastern As an implementation and enablement tool, Oracle’s User Productivity Kit (UPK) provides value throughout the software lifecycle.  Application testing is one area where customers like Northern Illinois University (NIU) are finding huge value in UPK and are using it to validate their systems.  Join us for an OAUG-sponsored event on Sept 13th to hear Beth Renstrom, UPK Product Manager and Bettylynne Gregg, NIU ERP Coordinator, discuss how the Test It Mode, Test Scripts, and Test Cases of UPK can be used to facilitate applications testing. Click Here to Register

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• extrapolating object state based on updates

  - by user494461

  I have a networked multi-user collaborative application. To maintain a consistent virtual world, I send updates for objects from a master peer to a guest peer. The update state contains x,y,z coordinates of object center and his rotation matrix(CHAI3d api used a 3x3 matrix) with 30Hz frequency. I want to reduce this update rate and want to send with a reduced update rate. I want a predictor on both peers. When the predicted value is outside, say a error value of 10% in comparison to master peers objects original state the master peer triggers a state update. Now for position I used velocity,position updates so that the guest peer can extrapolate position. Like velocity for position what parameter should I use for rotation extrapolition?

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• Project Euler 52: Ruby

  - by Ben Griswold

  In my attempt to learn Ruby out in the open, here’s my solution for Project Euler Problem 52.  Compared to Problem 51, this problem was a snap. Brute force and pretty quick… As always, any feedback is welcome. # Euler 52 # http://projecteuler.net/index.php?section=problems&id=52 # It can be seen that the number, 125874, and its double, # 251748, contain exactly the same digits, but in a # different order. # # Find the smallest positive integer, x, such that 2x, 3x, # 4x, 5x, and 6x, contain the same digits. timer_start = Time.now def contains_same_digits?(n) value = (n*2).to_s.split(//).uniq.sort.join 3.upto(6) do |i| return false if (n*i).to_s.split(//).uniq.sort.join != value end true end i = 100_000 answer = 0 while answer == 0 answer = i if contains_same_digits?(i) i+=1 end puts answer puts "Elapsed Time: #{(Time.now - timer_start)*1000} milliseconds"

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• PASS Summit 2013 - A Bunch of Blog Posts Recently

  - by RickHeiges

  Recently, there have been a number of blog posts about having the 2013 PASS Summit in Seattle or elsewhere. I had a post in November about the process and some of the major factors that were on my mind. You can read it here . There is value in moving the Summit to another venue. There is value in having the Summit in the same location/venue year after year as well. Many of the posts that I read recently make excellent arguments for each. As time goes on and you hear another good argument for one...(read more)

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• Row Number Transformation

  The Row Number Transformation calculates a row number for each row, and adds this as a new output column to the data flow. The column number is a sequential number, based on a seed value. Each row receives the next number in the sequence, based on the defined increment value. The final row number can be stored in a variable for later analysis, and can be used as part of a process to validate the integrity of the data movement. The Row Number transform has a variety of uses, such as generating surrogate keys, or as the basis for a data partitioning scheme when combined with the Conditional Split transformation. Properties Property Data Type Description Seed Int32 The first row number or seed value. Increment Int32 The value added to the previous row number to make the next row number. OutputVariable String The name of the variable into which the final row number is written post execution. (Optional). The three properties have been configured to support expressions, or they can set directly in the normal manner. Expressions on components are only visible on the hosting Data Flow task, not at the individual component level. Sometimes the data type of the property is incorrectly set when the properties are created, see the Troubleshooting section below for details on how to fix this. Installation The component is provided as an MSI file which you can download and run to install it. This simply places the files on disk in the correct locations and also installs the assemblies in the Global Assembly Cache as per Microsoft’s recommendations. You may need to restart the SQL Server Integration Services service, as this caches information about what components are installed, as well as restarting any open instances of Business Intelligence Development Studio (BIDS) / Visual Studio that you may be using to build your SSIS packages. For 2005/2008 Only - Finally you will have to add the transformation to the Visual Studio toolbox manually. Right-click the toolbox, and select Choose Items.... Select the SSIS Data Flow Items tab, and then check the Row Number transformation in the Choose Toolbox Items window. This process has been described in detail in the related FAQ entry for How do I install a task or transform component? We recommend you follow best practice and apply the current Microsoft SQL Server Service pack to your SQL Server servers and workstations, and this component requires a minimum of SQL Server 2005 Service Pack 1. Downloads The Row Number Transformation  is available for SQL Server 2005, SQL Server 2008 (includes R2) and SQL Server 2012. Please choose the version to match your SQL Server version, or you can install multiple versions and use them side by side if you have more than one version of SQL Server installed. Row Number Transformation for SQL Server 2005 Row Number Transformation for SQL Server 2008 Row Number Transformation for SQL Server 2012 Version History SQL Server 2012 Version 3.0.0.6 - SQL Server 2012 release. Includes upgrade support for both 2005 and 2008 packages to 2012. (5 Jun 2012) SQL Server 2008 Version 2.0.0.5 - SQL Server 2008 release. (15 Oct 2008) SQL Server 2005 Version 1.2.0.34 – Updated installer. (25 Jun 2008) Version 1.2.0.7 - SQL Server 2005 RTM Refresh. SP1 Compatibility Testing. Added the ability to reuse an existing column to hold the generated row number, as an alternative to the default of adding a new column to the output. (18 Jun 2006) Version 1.2.0.7 - SQL Server 2005 RTM Refresh. SP1 Compatibility Testing. Added the ability to reuse an existing column to hold the generated row number, as an alternative to the default of adding a new column to the output. (18 Jun 2006) Version 1.0.0.0 - Public Release for SQL Server 2005 IDW 15 June CTP (29 Aug 2005) Screenshot Code Sample The following code sample demonstrates using the Data Generator Source and Row Number Transformation programmatically in a very simple package. Package package = new Package(); package.Name = "Data Generator & Row Number"; // Add the Data Flow Task Executable taskExecutable = package.Executables.Add("STOCK:PipelineTask"); // Get the task host wrapper, and the Data Flow task TaskHost taskHost = taskExecutable as TaskHost; MainPipe dataFlowTask = (MainPipe)taskHost.InnerObject; // Add Data Generator Source IDTSComponentMetaData100 componentSource = dataFlowTask.ComponentMetaDataCollection.New(); componentSource.Name = "Data Generator"; componentSource.ComponentClassID = "Konesans.Dts.Pipeline.DataGenerator.DataGenerator, Konesans.Dts.Pipeline.DataGenerator, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b2ab4a111192992b"; CManagedComponentWrapper instanceSource = componentSource.Instantiate(); instanceSource.ProvideComponentProperties(); instanceSource.SetComponentProperty("RowCount", 10000); // Add Row Number Tx IDTSComponentMetaData100 componentRowNumber = dataFlowTask.ComponentMetaDataCollection.New(); componentRowNumber.Name = "FlatFileDestination"; componentRowNumber.ComponentClassID = "Konesans.Dts.Pipeline.RowNumberTransform.RowNumberTransform, Konesans.Dts.Pipeline.RowNumberTransform, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b2ab4a111192992b"; CManagedComponentWrapper instanceRowNumber = componentRowNumber.Instantiate(); instanceRowNumber.ProvideComponentProperties(); instanceRowNumber.SetComponentProperty("Increment", 10); // Connect the two components together IDTSPath100 path = dataFlowTask.PathCollection.New(); path.AttachPathAndPropagateNotifications(componentSource.OutputCollection[0], componentRowNumber.InputCollection[0]); #if DEBUG // Save package to disk, DEBUG only new Application().SaveToXml(String.Format(@"C:\Temp\{0}.dtsx", package.Name), package, null); #endif package.Execute(); foreach (DtsError error in package.Errors) { Console.WriteLine("ErrorCode : {0}", error.ErrorCode); Console.WriteLine(" SubComponent : {0}", error.SubComponent); Console.WriteLine(" Description : {0}", error.Description); } package.Dispose(); Troubleshooting Make sure you have downloaded the version that matches your version of SQL Server. We offer separate downloads for SQL Server 2005, SQL Server 2008 and SQL Server 2012. If you get an error when you try and use the component along the lines of The component could not be added to the Data Flow task. Please verify that this component is properly installed.  ... The data flow object "Konesans ..." is not installed correctly on this computer, this usually indicates that the internal cache of SSIS components needs to be updated. This is held by the SSIS service, so you need restart the the SQL Server Integration Services service. You can do this from the Services applet in Control Panel or Administrative Tools in Windows. You can also restart the computer if you prefer. You may also need to restart any current instances of Business Intelligence Development Studio (BIDS) / Visual Studio that you may be using to build your SSIS packages. Once installation is complete you need to manually add the task to the toolbox before you will see it and to be able add it to packages - How do I install a task or transform component? Please also make sure you have installed a minimum of SP1 for SQL 2005. The IDtsPipelineEnvironmentService was added in SQL Server 2005 Service Pack 1 (SP1) (See  http://support.microsoft.com/kb/916940). If you get an error Could not load type 'Microsoft.SqlServer.Dts.Design.IDtsPipelineEnvironmentService' from assembly 'Microsoft.SqlServer.Dts.Design, Version=9.0.242.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91'. when trying to open the user interface, it implies that your development machine has not had SP1 applied. Very occasionally we get a problem to do with the properties not being created with the correct data type. Since there is no way to programmatically to define the data type of a pipeline component property, it can only infer it. Whilst we set an integer value as we create the property, sometimes SSIS decides to define it is a decimal. This is often highlighted when you use a property expression against the property and get an error similar to Cannot convert System.Int32 to System.Decimal. Unfortunately this is beyond our control and there appears to be no pattern as to when this happens. If you do have more information we would be happy to hear it. To fix this issue you can manually edit the package file. In Visual Studio right click the package file from the Solution Explorer and select View Code, which will open the package as raw XML. You can now search for the properties by name or the component name. You can then change the incorrect property data types highlighted below from Decimal to Int32. <component id="37" name="Row Number Transformation" componentClassID="{BF01D463-7089-41EE-8F05-0A6DC17CE633}" … >     <properties>         <property id="38" name="UserComponentTypeName" …>         <property id="41" name="Seed" dataType="System.Int32" ...>10</property>         <property id="42" name="Increment" dataType="System.Decimal" ...>10</property>         ... If you are still having issues then contact us, but please provide as much detail as possible about error, as well as which version of the the task you are using and details of the SSIS tools installed.

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• Economic modelling - Resources for valuing goods

  - by Rushyo

  tl;dr: What economic/computer science books would you suggest for learning about economic valuation of goods and simulations thereof? I'm looking to create an economic model for a game based on goods created procedurally. Every natural resource and produced good would be procedurally generated, with certain goods being assigned certain uses. Fakesium might be used for the production of Weapon A and produced from Fakesium factories which use Dilithium and Widgets as reagents, where Widgets are also the product of Foo and Bar The problem is not creating the resources and their various production utlities - but getting the game's AI empires and merchants to correctly value the goods according to their scarcity, utility and production costs. I need to create a simulation of goods which allows the various game factions to assign a common value denominator (credits) to each resource, depending on how much its worth to that empire. I see the simulation being something like: "I have a high requirement for Weapon A. Since I don't have much of Fakesium, which is needed for Weapon A - I must have a high demand for Fakesium. If I can acquire Fakesium, devalue it. If not, increase its value - and also increase demand for Dilithium and Widgets too." This is very naive - because it may be much much cheaper for the empire to simply purchase Dilithium and Widgets directly rather than purchasing Fakesium, for example. Another example is two resources might allow the creation of Weapon A (Fakesium and Lieron), so we'd need to consider that. I've been scratching my head over the problem and it keeps growing. By the time the player joins the world, I'd expect enough iterations of this process to have occurred that prices would have largely normalised - and would then only trigger rarely to compensate for major changes (eg. if the player blows up the world's only Foo mine!) Could anyone suggest resources (books, largely) which outline this style of modelling, preferably in the context of simulations? Since this problem would never occur outside fantasy worlds, I figured this is probably the most likely place to find people who have encountered similar problems and I'm sure there's people who know of good places for Games Developers to start looking at less specific economic theory too. Additionally, does anyone know of any developers with blogs whose games or research applications perform similar modelling?

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• Enterprise 2.0: Expectations vs. Reality

  - by kellsey.ruppel(at)oracle.com

  If you haven't heard it already, check out the podcast interview that Enterprise 2.0 expert John Brunswick did with Bob Rhubart, host of ArchBeat Podcast. Listen as John discusses some of the expectations vs. reality when it comes to Enterprise 2.0. Listen to Part 1 Listen to Part 2 Listen to Part 3 You can connect with John Brunswick and learn more about Enterprise 2.0 at the following links: John's Homepage Twitter: @johnbrunswick Linked In Oracle Fusion ECM Blog AIIM Enterprise 2.0 Blog Enterprise 2.0 Workbench (Youtube) JSP and Beyond (ebook) OTN Technical Articles: Extending the Business Value of SOA through Business Process Management Unlocking the Value of Enterprise 2.0 Collaboration and Authoring Tools Principles of Natural Participation And here are some additional links if you are interested in learning more about Bob Rhubart and ArchBeat: ArchBeat blog ArchBeat Podcast Oracle Architect Community Mix Profile Linked In FriendFeed Twitter: @brhubart

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• xna orbit camera troubles

  - by user17753

  I have a Model named cube to which I load in LoadContent(): cube = Content.Load<Model>("untitled");. In the Draw Method I call DrawModel: private void DrawModel(Model m, Matrix world) { foreach (ModelMesh mesh in m.Meshes) { foreach (BasicEffect effect in mesh.Effects) { effect.EnableDefaultLighting(); effect.View = camera.View; effect.Projection = camera.Projection; effect.World = world; } mesh.Draw(); } } camera is of the Camera type, a class I've setup. Right now it is instantiated in the initialization section with the graphics aspect ratio and the translation (world) vector of the model, and the Draw loop calls the camera.UpdateCamera(); before drawing the models. class Camera { #region Fields private Matrix view; // View Matrix for Camera private Matrix projection; // Projection Matrix for Camera private Vector3 position; // Position of Camera private Vector3 target; // Point camera is "aimed" at private float aspectRatio; //Aspect Ratio for projection private float speed; //Speed of camera private Vector3 camup = Vector3.Up; #endregion #region Accessors /// <summary> /// View Matrix of the Camera -- Read Only /// </summary> public Matrix View { get { return view; } } /// <summary> /// Projection Matrix of the Camera -- Read Only /// </summary> public Matrix Projection { get { return projection; } } #endregion /// <summary> /// Creates a new Camera. /// </summary> /// <param name="AspectRatio">Aspect Ratio to use for the projection.</param> /// <param name="Position">Target coord to aim camera at.</param> public Camera(float AspectRatio, Vector3 Target) { target = Target; aspectRatio = AspectRatio; ResetCamera(); } private void Rotate(Vector3 Axis, float Amount) { position = Vector3.Transform(position - target, Matrix.CreateFromAxisAngle(Axis, Amount)) + target; } /// <summary> /// Resets Default Values of the Camera /// </summary> private void ResetCamera() { speed = 0.05f; position = target + new Vector3(0f, 20f, 20f); projection = Matrix.CreatePerspectiveFieldOfView(MathHelper.PiOver4, aspectRatio, 0.5f, 100f); CalculateViewMatrix(); } /// <summary> /// Updates the Camera. Should be first thing done in Draw loop /// </summary> public void UpdateCamera() { Rotate(Vector3.Right, speed); CalculateViewMatrix(); } /// <summary> /// Calculates the View Matrix for the camera /// </summary> private void CalculateViewMatrix() { view = Matrix.CreateLookAt(position,target, camup); } I'm trying to create the camera so that it can orbit the center of the model. For a test I am calling Rotate(Vector3.Right, speed); but it rotates almost right but gets to a point where it "flips." If I rotate along a different axis Rotate(Vector3.Up, speed); everything seems OK in that direction. So I guess, can someone tell me what I'm not accounting for in the above code I wrote? Or point me to an example of an orbiting camera that can be fixed on an arbitrary point?

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• ODI 11g - Dynamic and Flexible Code Generation

  - by David Allan

  ODI supports conditional branching at execution time in its code generation framework. This is a little used, little known, but very powerful capability - this let's one piece of template code behave dynamically based on a runtime variable's value for example. Generally knowledge module's are free of any variable dependency. Using variable's within a knowledge module for this kind of dynamic capability is a valid use case - definitely in the highly specialized area. The example I will illustrate is much simpler - how to define a filter (based on mapping here) that may or may not be included depending on whether at runtime a certain value is defined for a variable. I define a variable V_COND, if I set this variable's value to 1, then I will include the filter condition 'EMP.SAL > 1' otherwise I will just use '1=1' as the filter condition. I use ODIs substitution tags using a special tag '<$' which is processed just prior to execution in the runtime code - so this code is included in the ODI scenario code and it is processed after variables are substituted (unlike the '<?' tag).  So the lines below are not equal ... <$ if ( "#V_COND".equals("1")  ) { $> EMP.SAL > 1 <$ } else { $> 1 = 1 <$ } $> <? if ( "#V_COND".equals("1")  ) { ?> EMP.SAL > 1 <? } else { ?> 1 = 1 <? } ?> When the <? code is evaluated the code is executed without variable substitution - so we do not get the desired semantics, must use the <$ code. You can see the jython (java) code in red is the conditional if statement that drives whether the 'EMP.SAL > 1' or '1=1' is included in the generated code. For this illustration you need at least the ODI 11.1.1.6 release - with the vanilla 11.1.1.5 release it didn't work for me (may be patches?). As I mentioned, normally KMs don't have dependencies on variables - since any users must then have these variables defined etc. but it does afford a lot of runtime flexibility if such capabilities are required - something to keep in mind, definitely.

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• When should a method of a class return the same instance after modifying itself?

  - by modiX

  I have a class that has three methods A(), B() and C(). Those methods modify the own instance. While the methods have to return an instance when the instance is a separate copy (just as Clone()), I got a free choice to return void or the same instance (return this;) when modifying the same instance in the method and not returning any other value. When deciding for returning the same modified instance, I can do neat method chains like obj.A().B().C();. Would this be the only reason for doing so? Is it even okay to modify the own instance and return it, too? Or should it only return a copy and leave the original object as before? Because when returning the same modified instance the user would maybe admit the returned value is a copy, otherwise it would not be returned? If it's okay, what's the best way to clarify such things on the method?

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• Arrow ECS: VAD mit Weitblick

  - by A&C Redaktion

  Die Arrow ECS unterstützt Oracle Partner dabei, sich dauerhaft erfolgreich zu etablieren. Als Value Added Distributor, kurz VAD, für das Oracle Soft- und Hardware Portfolio bietet Arrow wertvolle Mehrwertdienstleistungen für Partner an, etwa in den Bereichen Consulting, Vertrieb und Produktmarketing. Der Vorteil: Die Partner können sich voll auf ihr Kerngeschäft konzentrieren. Wie die Zusammenarbeit genau funktioniert, erklären Martin Wilhelm, Manager Business Unit Enterprise Solutions, Herbert Varga vom Product Management und die Sales-Expertin für Oracle Produkte, Maria Keller, im Video. Arrow ECS steht für kompetente und zuverlässige Zusammenarbeit mit dem Partner und wurde bereits mehrfach zum Oracle Global Value Added Distributor des Jahres gekürt

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• Arrow ECS: VAD mit Weitblick

  - by A&C Redaktion

  Die Arrow ECS unterstützt Oracle Partner dabei, sich dauerhaft erfolgreich zu etablieren. Als Value Added Distributor, kurz VAD, für das Oracle Soft- und Hardware Portfolio bietet Arrow wertvolle Mehrwertdienstleistungen für Partner an, etwa in den Bereichen Consulting, Vertrieb und Produktmarketing. Der Vorteil: Die Partner können sich voll auf ihr Kerngeschäft konzentrieren. Wie die Zusammenarbeit genau funktioniert, erklären Martin Wilhelm, Manager Business Unit Enterprise Solutions, Herbert Varga vom Product Management und die Sales-Expertin für Oracle Produkte, Maria Keller, im Video. Arrow ECS steht für kompetente und zuverlässige Zusammenarbeit mit dem Partner und wurde bereits mehrfach zum Oracle Global Value Added Distributor des Jahres gekürt

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• Ubuntu 14.04 and Dell E6440 - sound and mouse working after suspend/resume

  - by slawek.mikula

  I've installed fresh Ubuntu 14.04 on Dell Lattitude E6440 and i've encountered two strange issues when doing full system start/restart: - mouse scroll when full restart is working very fast. One turn of the wheel cause very large change of value (window scroll, sound change etc.) But when i suspend and resume laptop it starts working correctly (one turn of the wheel and small change of value - the same as in previous versions of Ubuntu) - sound from speakers - the same issue. When full restart the sound does not come from internal laptop speakers. It works though through headphones. After suspend/resume internal speakers starts to work. What can be a cause of these issues ?

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• Nicest way to map rgb colors from html to led

  - by back_ache

  I have attached an rgb led to a color picker on a webpage and have hit the obvious problem that though the led is 8-bit like html the color rendition is very different so with the more subtle shades the led values for the color are wildly different to the html values. The brute-force method would be for me to have a lookup-table on the webserver to map the two sets of values but would ideally like to do it more elegantly Before I start listing all my 101 ideas for doing this I wondered if anyone else had come across the issue, the end-game would be to be able to abstract the color-rendition of different leds and make it available as a webservice (html value and device id in, led value out)

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