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• Java or Python? Career/Start-up advice needed [closed]

  - by vim

  I have a full-time PHP job and I've been working with PHP for 5 years. As you can guess after spending 5 years I'm not willing to stay within this technology stack any more. I also worked with Java for 2 year before, so for me it looks more obvious to switch back to Java. However during last 5 years I was thinking about starting my own project, and now I think I have a very good SAAS idea. I'm completely confused what technology should I use for my project. I don't want to do it in PHP, and after reading many articles about rapid prototype development it seems to me that Django/Ruby is the best option. I will continue to work full time for my current employer because I need to pay my bills and will work on my project in my free time. The concern I have is should I do my project in Java or Python? To be realistic there is always a risk when you are doing your own project/start-up. If I do it in Java in the worst case scenario I believe I will be able to find a full time Java position because I already have some experience in Java + recent experience in my project. With regards to Python it looks like it is not very popular in my area and salaries are much more lower then for Java. On the other hand I have a feeling that if I chose Java it will take me a way longer to finish my project. Guys I'm completely confused and I need your advice. P.S. I have moved to London 2 years ago from another country, local guys are very welcome to share their thoughts about London's job market.

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• How does process of updating code with Continous Integration work?

  - by BleakCabalist

  I want to draw a model of process of updating the source code with the use of Continous Integration. The main issue is I don't really understand how it works when there are several programmers working on various aspects of the code at the same time. I can't visualize it in my mind. Here's what I know but I might be wrong: New code is sent to repository. Continous Integration server asks Version Control System if there is a new code in repository. If there is than CIS executes tests on the code. If tests show there are problems than CIS orders VCS to revert back to working wersion of the code and communicates it to programmer. If tests are passed positively it compiles the repository code and makes new build of a game? New build is made not after ever single change, but at the end of the day I believe? Are my assumptions above correct? If yes, does it also work when there are several programmers updating repository at once? Is this enough to draw a model of the process in your opinions or did I miss something? Also, what software would I need for above process? Can you guys give examples for CIS software and VCS software and whatever else I need? Does CIS software perform code tests or do I need another tool for that and integrate it with CIS? Is there a repository software?

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• Developing a TCK: Spec Lead Call for Spec Leads 20 December

  - by Heather VanCura

  The JCP Program will be hosting a Spec Lead call on 20 December on the topic of developing a Technology Compatibility Kit (TCK).  A Technology Compatibility Kit is a required output of a JSR at Final Release, along with the Specification and Reference Implementation (RI).   The TCK must test all aspects of a specification that impact how compatible an implementation of that specification would be, such as the public API and all mandatory elements of the specification. The Reference Implementation is required to pass the TCK. A vendor's implementation of a specification is only considered compatible if the implementation passes the TCK fully and completely.  The TCK is used to test implementations of the Final Specification to make sure that they are fully compatible. The call will be recorded and posted on the JCP.org multimedia page along with any related materials.   Invitation details for the online meeting:Topic: SL Call: Developing a TCK Date: Thursday, December 20, 2012 Time: 9:30 am, Pacific Standard Time (San Francisco, GMT-08:00) Meeting Number: 804 390 892 Meeting Password: 2222 ------------------------------------------------------- To join the audio conference -------------------------------------------------------     +1 (866) 682-4770 (US)     Conference code: 945-4597    Security code: 52775 ("JCPSL" on your phone handset)     For global access numbers see http://www.intercall.com/oracle/access_numbers.htm         Or +1 (408) 774-4073

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• How can one find software development work that involves directly the final end user?

  - by RJa

  I've worked in software development for 15 years and, while there have been signficant personal achievements and a lot of experience, I've always felt detached from the man/woman-on-the-street, the every day person, how it affects their lives, in a number of ways: the technologies: embedded software, hidden away, stuff not seen by the everyday person. Or process technology supporting manufactured products the size of the systems, meaning many jobs, divided up, work is abstract, not one person can see the whole picture the organisations: large, with departments dealing with different areas, the software, the hardware, the marketing, the sales, the customer support the locations and hours: out-of-town business parks away from the rest of society, fixed locations, inflexible: 9-5 everyday This to me seems typical of the companies I worked for and see elsewhere. Granted, there are positives such as the technology itself and usually being among high calibre co-workers, but the above points frustrate me about the industry because they detach the work from its meaning. How can one: change these things in an existing job, or compensate for them? find other work that avoids these and connects with the final end user? Job designs tend to focus on the job content and technical requirements rather than how the job aims to fulfil end user needs, is meaningful.

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• How can I get nVidia CUDA or OpenCL working on a laptop with nVidia discrete card/Intel Integrated Graphics?

  - by PeterDC

  Background: I'm a 3D artist (as a hobby) and have recently started using Ubuntu 12.04 LTS as a dual-boot with Windows 7. It's running on my a fairly new 64-bit Toshiba laptop with an nVidia GeForce GT 540M GPU (graphics card). It also, however has Intel Integrated Graphics (which I suspect Ubuntu's been using). So, when I render my 3D scenes to images on Windows, I am able to choose between using my CPU or my nVidia GPU (faster). From the 3D application, I can set the GPU to use either CUDA or OpenCL. In Ubuntu, there's no GPU option. After doing (too much?) research on the issues with Linux and the nVidia Optimus technology, I am slightly more enlightened, but a lot more confused. I don't care one bit about the Optimus technology, as battery life is not by any means an issue for me. Here's my question: What can I do to be able to use CUDA-utilizing programs (such as Blender) on my nVidia GPU in Ubuntu? Will I need nVidia drivers? (I have heard they don't play nicely with Optimus setups on Linux.) Is there at least a way to use OpenCL on my GPU in Ubuntu?

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• June Webcast: SOA Gateway Implementation and Troubleshooting (2 sessions)

  - by Oracle_EBS

  For June 2012 we have scheduled a Webcast about the SOA Gateway Implementation and Troubleshooting, presented by 2 experienced Support Engineers located in Romania. As every time we are driving 2 sessions for a better global alignment : EBS - SOA Gateway Overview and Troubleshooting Agenda     Introduction of the SOA Gateway     Architecture Overview     Major Components     Troubleshooting     References EMEA Session : June 12, 2012 at 10:00 am CET / 14:30 India / 18:00 Japan / 20:00 Australia Details & Registration : Note 1455681.1 US Session : June 13, 2012 at 19:00 am CET / 10:00 am Pacific / 11:00 am Mountain/ 01:00 pm Eastern Details & Registration : Note 1455661.1 Schedules, recordings and the Presentations of the Advisor Webcast drove under the EBS Applications Technology area can be found in Note 1186338.1. Schedules, recordings and the Presentations of the Advisor Webcast drove under the EBS Applications Technology area can be found in Note 1186338.1. Current Schedules of Advisor Webcast for all Oracle Products can be found on Note 740966.1 Post Presentation Recordings of the Advisor Webcasts for all Oracle Products can be found on Note 740964.1 If you have any question about the schedules or if you have a suggestion for an Advisor Webcast to be planned in future, please send an E-Mail to Ruediger Ziegler.

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• Implementing Explosions

  - by Xkynar

  I want to add explosions to my 2D game, but im having a hard time with the architecture. Several game elements might be responsible for explosions, like, lets say, explosive barrels and bullets (and there might be chain reactions with close barrels). The only options i can come up with are: 1 - Having an array of explosions and treat them as a game element as important as any other Pros: Having a single array which is updated and drawn with all the other game element arrays makes it more organized and simple to update, and the explosive barrels at a first glance would be easy to create, simply by passing the explosion array as a pointer to each explosive barrel constructor Cons: It might be hard for the bullets to add an explosion to the vector, since bullets are shot by a Weapon class which is located in every mob, so lets say, if i create a new enemy and add it to the enemy array, that enemy will have a weapon and functions to be able to use it, and if i want the weapon (rocket launcher in this case) to have access to the explosions array to be able to add a new one, id have to pass the explosion array as a pointer to the enemy, which would then pass it to the weapon, which would pass it to the bullets (ugly chain). Another problem I can think of is a little more weird: If im checking the collisions between explosions and barrels (so i create a chain reaction) and i detect an explosion colliding with a barrel, if i add a new explosion while im iterating the explosions java will trow an exception. So this is kinda annoying, i cant iterate through the explosions and add a new explosion, i must do it in another way... The other way which isnt really well thought yet is to just add an explosive component to every element that might explode so that when it dies, it explodes or something, but i dont have good ways on implementing this theory either Honestly i dont like either the solutions so id like to know how is it usually done by actual game developers, sorry if my problem seems trivial and dumb.

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• How to reset a List c# and XNA [on hold]

  - by P3erfect

  I need to do a "retry" option when the player finishes the game.For doing this I thought to reset the lists of Monsters and other objects that moved at the first playing or which have been "killed".for example I have a list like that: //the enemy1 class is already done // in Game1 I declare it List<enemy1> enem1 = new List<enemy1>(); //Initialize method List<enemy1> enem1 = new List<enemy1>(); //LoadContent foreach (enemy1 enemy in enem1) { enemy.Load(Content); } enem1.Add(new enemy1(Content.Load<Texture2D>("enemy"), new Vector2(5900, 12600))); //Update foreach (enemy1 enemy in enem1) { enemy.Update(gameTime); } //after being shoted the enemies disappear and i remove them //if the monsters are shoted the bool "visible" goes from false to true for (int i = enem1.Count - 1; i >= 0; --i) { if (enem1[i].visible == true) enem1.RemoveAt(i); } //Draw foreach (enemy1 enemy in enem1) { if(enemy.visble==false) { enemy.Draw(spriteBatch, gameTime); } } //So my problem is to restart the game. I did this in Update method if(lost==false) { //update all the things... } if(lost==true)//this is if I die { //here I have to put the code that restore the list //I tried: foreach (enemy1 enemy in enem1) { enemy.visible=false; } player.life=3;//initializing the player,points,time player.position=initialPosition; points=0; time=0; }//the player works.. } } they should be drawn again but if I removed them they won't be drawn anymore.If I don't remove them ,instead, the enemies are in different places (because they follow me). Any suggestions to restore or reinitialize the list??

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• The Freemium-Premium Puzzle

  The more time I spend thinking about the value of information, the more I found that digitalizing information significantly changed the 'information markets', potentially in an irreversible manner. The graph at the bottom outlines my current view. The existing business models tend to be the same in the digital and analogue information world, i.e. revenue is derived from a combination of consumers' payments and advertisement. Even monetizing 'meta-information' such as search engines isn't new. Just think of the once popular 'Who'sWho'. What really changed is the price-value ratio. The curve is pushed down, closer to the axis. You pay less for the same, or often even get more for less. If you recall the capabilities I described in relevance of information you will see that there are many additional features available for digital content compared to analogue content. I think this is a good 'blue ocean strategy' by combining existing capabilities in a new way. (Kim W.C. & Mauborgne, R. (2005) Blue Ocean Strategies. Boston: Harvard Business School Publishing.). In addition the different channels of digital information distribution significantly change the value of information. I will touch on this in one of my next blogs. Right now, many information providers started to offer 'freemium' content through digital channels, hoping to get a premium for the 'full' content. No freemium seems to take them out of business, because they are apparently no longer visible in today's most relevant channels of information consumption. But, the more freemium is provided, the lower the premium gets; a truly puzzling situation. To make it worse, channel providers increasingly regard information as a value adding and differentiating activity. Maybe new types of exclusive, strategic alliances will solve the puzzle, introducing new types of 'gate-keepers', which - to me - somehow does not match the spirit of the WWW and the generation Y's perception of information consumption and exchange.

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• ArrayList in Java [on hold]

  - by JNL

  I was implementing a program to remove the duplicates from the 2 character array. I implemented these 2 solutions, Solution 1 worked fine, but Solution 2 given me UnSupportedoperationException. I am wonderring why i sthat so? The two solutions are given below; public void getDiffernce(Character[] inp1, Character[] inp2){ // Solution 1: // ********************************************************************************** List<Character> list1 = new ArrayList<Character>(Arrays.asList(inp1)); List<Character> list2 = new ArrayList<Character>(Arrays.asList(inp2)); list1.removeAll(list2); System.out.println(list1); System.out.println("*********************************************************************************"); // Solution 2: Character a[] = {'f', 'x', 'l', 'b', 'y'}; Character b[] = {'x', 'b','d'}; List<Character> al1 = new ArrayList<Character>(); List<Character> al2 = new ArrayList<Character>(); al1 = (Arrays.asList(a)); System.out.println(al1); al2 = (Arrays.asList(b)); System.out.println(al2); al1.removeAll(al2); // retainAll(al2); System.out.println(al1); }

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• need a different backup solution

  - by DigitalJedi

  I just built a new media/backup server using Ubuntu 12.04 64bit. I installed a hard drive to be used only for music, pictures, and videos and formatted it fat32 so my 1 and only Windows PC could map those folders as netshares. My laptop, also running Ubuntu 12.04, is what I am using the most so new media is first downloaded on my laptop. I've already got the music, videos, and pictures folders from my server mounting as shares on my laptop on boot thanks to some fstab edits and sshfs. Now I'm wanting either an app or script that could backup any new files I add to my local media folders to the mounted folders on my server. I've been Googling all day and found a few apps like rsync but they seem to have issues with ext4 to vfat backups. I thought maybe a script would be best but I'm new to scripting in Linux and don't want to mess anything up. Basically I am looking for something that will backup only newly added files to the server. I figure I could schedule it once a week. There are some stipulations. For example, my local music folder has over 700 folders for each artist/band then sub folders inside those for albums. I want something smart enough to only copy newly added content so I'm guessing the modified date would probably be a good condition if I were scripting. I'm rambling. Any suggestions would be GREATLY appreciated. I'm not finding anything to suit my needs. I'm almost to the point of just learning bas scripting so I can write something but then it will be a couple weeks or so before I have a possible solution and I'd like something in place sooner.

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• MySQL Connector/Net 6.6 GA has been released

  - by fernando

  MySQL Connector/Net 6.6, a new version of the all-managed .NET driver for MySQL has been released.  This is the GA intended to introduce users to the new features in the release.  This release is feature complete. It is recommended for use in production environments. It is appropriate for use with MySQL server versions 5.0-5.6 It is now available in source and binary form from http://dev.mysql.com/downloads/connector/net/#downloads and mirror sites (note that not all mirror sites may be up to date at this point-if you can't find this version on some mirror, please try again later or choose another download site.) The 6.6 version of MySQL Connector/Net brings the following new features:   * Stored routine debugging   * Entity Framework 4.3 Code First support   * Pluggable authentication (now third parties can plug new authentications mechanisms into the driver).   * Full Visual Studio 2012 support: everything from Server Explorer to Intellisense&   the Stored Routine debugger. The release is available to download athttp://dev.mysql.com/downloads/connector/net/6.6.html Documentation ------------------------------------- You can view current Connector/Net documentation at http://dev.mysql.com/doc/refman/5.5/en/connector-net.html For specific topics: Stored Routine Debugger:http://dev.mysql.com/doc/refman/5.5/en/connector-net-visual-studio-debugger.html Authentication plugin:http://dev.mysql.com/doc/refman/5.5/en/connector-net-programming-authentication-user-plugin.html You can find our team blog at http://blogs.oracle.com/MySQLOnWindows. You can also post questions on our forums at http://forums.mysql.com/. Enjoy and thanks for the support! 

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• Create a Texture2D from larger image

  - by Dialock

  I am having trouble with the basic logic of this solution: Xna: Splitting one large texture into an array of smaller textures in respect to my specific problem (specifically, I'm looking at the second answer.) How can I use my source rectangle that I already use for drawing to create a new Texture2D? spriteBatch.Draw(CurrentMap.CollisionSet, currentMap.CellScreenRectangle(x, y), CurrentMap.TileSourceRectangle(currentMap.MapCells[x, y].TileDepths[4]), Color.FromNonPremultiplied(0,0,0, 45), 0.0f, Vector2.Zero, SpriteEffects.None, 0.91f); I know I want a method that I started so: //In Update Method of say the player's character. Texture2D CollisionTexture = ExtractTexture(MapManager.CurrentMap.CollisionSet, MapManager.TileWidth, MapManager.TileHeight); // In MapManager Class who knows everything about tiles that make up a level. public Texture2D ExtractTexture(Texture2D original, int partWidth, int partheight, MapTile mapCell) { var dataPerPart = partWidth * partheight; Color[] originalPixelData = new Color[original.Width * original.Height]; original.GetData<Color>(originalPixelData); Color[] newTextureData = new Color[dataPerPart]; original.GetData<Color>(0, CurrentMap.TileSourceRectangle(mapCell.TileDepths[4]), originalPixelData, 0, originalPixelData.Count()); Texture2D outTexture = new Texture2D(original.GraphicsDevice, partWidth, partheight); } I think the problem is I'm just not understanding the overload of Texture2D.GetData< Part of my concern is creating an array of the whole texture in the first place. Can I target the original texture and create an array of colors for copying based on what I already get from the method TileSourceRecatangle(int)?

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• The Oracle EMEA Partner Event of the Year- FREE, LIVE & ONLINE!

  - by Claudia Costa

  New products. New specializations. New opportunities. Find out how you can use them to build your Oracle business even faster and more effectively in 2010/11. The date for your diary is the 29th of June 2010, at 11:00 GMT. And this summer's event is bigger and better than ever. You will learn: What Oracle's acquisition of Sun Microsystems means for your business and your customers How Oracle Specialization can help you grow faster and smarter, and how Oracle partners from across the region are already benefitting Why Oracle's latest technology, applications, middleware and hardware products and solutions offer you unbeatable new business opportunities How Oracle's partner program is evolving to help partners succeed with a live link to the Oracle FY11 Global Partner Kickoff How specialization has helped a former Microsoft executive become one of the world's most successful social entrepreneurs You'll also have the chance to network with Oracle experts and other partners, and download valuable collateral from specially constructed virtual information booths. Plus, at the end of the event, submit your feedback form for the chance to win two passes to Oracle OpenWorld in San Francisco this September! Don't miss out! REGISTER TODAY!  for this exciting, exclusive online event. Visit here for more information and to view the complete agenda We look forward to welcoming you on the 29th of June! Yours sincerely, Stein SurlienSenior Vice President, Alliances & Channels, Oracle EMEA PS. The Oracle PartnerNetwork Days Virtual Event will be followed by "Oracle PartnerNetwork Days Executive Forums", and "Oracle PartnerNetwork Days Satellite Events" in various countries. Please look out for further communications from your local Oracle team.

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• Partner Showcase

  - by rituchhibber

  Building a High Performance Employee Self Service Portal with Oracle WebCenter Free Half Day Technical Workshop Organisations started with static corporate intranets at the beginning of the “Noughties”, these have been evolving to the Intranet Portal that is common today. The rise in Employee Self Service leverages off this evolution to transform the intranet as a resource in order to deliver the “Contextual workers control panel”. This empowers employees to do their complete job from a single environment covering transactions, document handling, form completion, watching presentations, participating in discussions through to utilising search functionality. Ether Solutions - the Enterprise Portal specialists, together with C2B2 - the independent middleware experts, will deliver this workshop to you, allowing you to discover how Oracle WebCenter provides a high performance, highly scalable platform for social intranets and EmployeeSelf Service Portals. To register, please click here. When? Wednesday, 12th of December 2012 Where? Institute of Directors, 116 Pall Mall, London SW1Y 5ED Who should attend? Lead Developers, Technical Architects, Solution Architects, Technical Leads and other Technical team member interested in learning about WebCenter. Lingotek - Collaborative Translation Technology Lingotek is the leading provider of Collaborative Translation Technology designed to meet the requirements of organizations challenged with communicating, interacting, and commercializing a global audience. Lingotek software helps companies achieve unprecedented control over the translation process and enables companies to capture, grow, and reuse their linguistic assets. Lingotek has deployed systems for some of the most innovative organizations in the United States and has enabled the success of large Fortune 500 corporations, small professional firms, and companies of every size in between. For further information, please click here.

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• Static vs. dynamic memory allocation - lots of constant objects, only small part of them used at runtime

  - by k29

  Here are two options: Option 1: enum QuizCategory { CATEGORY_1(new MyCollection<Question>() .add(Question.QUESTION_A) .add(Question.QUESTION_B) .add...), CATEGORY_2(new MyCollection<Question>() .add(Question.QUESTION_B) .add(Question.QUESTION_C) .add...), ... ; public MyCollection<Question> collection; private QuizCategory(MyCollection<Question> collection) { this.collection = collection; } public Question getRandom() { return collection.getRandomQuestion(); } } Option 2: enum QuizCategory2 { CATEGORY_1 { @Override protected MyCollection<Question> populateWithQuestions() { return new MyCollection<Question>() .add(Question.QUESTION_A) .add(Question.QUESTION_B) .add...; } }, CATEGORY_2 { @Override protected MyCollection<Question> populateWithQuestions() { return new MyCollection<Question>() .add(Question.QUESTION_B) .add(Question.QUESTION_C) .add...; } }; public Question getRandom() { MyCollection<Question> collection = populateWithQuestions(); return collection.getRandomQuestion(); } protected abstract MyCollection<Question> populateWithQuestions(); } There will be around 1000 categories, each containing 10 - 300 questions (100 on average). At runtime typically only 10 categories and 30 questions will be used. Each question is itself an enum constant (with its fields and methods). I'm trying to decide between those two options in the mobile application context. I haven't done any measurements since I have yet to write the questions and would like to gather more information before committing to one or another option. As far as I understand: (a) Option 1 will perform better since there will be no need to populate the collection and then garbage-collect the questions; (b) Option 1 will require extra memory: 1000 categories x 100 questions x 4 bytes for each reference = 400 Kb, which is not significant. So I'm leaning to Option 1, but just wondered if I'm correct in my assumptions and not missing something important? Perhaps someone has faced a similar dilemma? Or perhaps it doesn't actually matter that much?

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• Transforms in Box2D

  - by user1264811

  I'm attempting to implement a camera in my game. I had it working for regular objects, but I began using Box2D and obviously things changed a bit. I have a Body object that I want to draw at the center of the screen. Basically what I'm doing is subtracting the viewportX and viewportY to the Body. I use this code that currently is not working as it should: public void paint(Graphics2D g, int viewportX, int viewportY) { Transform xf = new Transform(); // m_body is the Body object xf.set(m_body.getTransform()); // Here what I attemp to do is take the transform and alter it // by the viewportX and Y, which is something like **-240, -150**. // Why is it negative? Because an object has coordinates 500, 300 would be displayed // at 160, 150 when the subtraction is done. // With the DrawUtils.toScale(), it's just how I convert the units from JBox2D units // to my units. Vec2 v = Transform.mulTrans(xf, new Vec2(DrawUtils.toScale(-viewportX), DrawUtils.toScale(-viewportY))); // Set the new transform to the new vector. Keep the old angle. xf.set(v, xf.q.getAngle()); g.setColor(Color.white); // I know for a fact that the following method works 100%. It correctly displays // my object, just that it doesn't follow it. for (Fixture f = m_body.getFixtureList(); f != null; f = f.getNext()) DrawUtils.drawShape(f, xf); } Hopefully I didn't over comment this and you understand my problem. I don't want to alter the actual physics position of the object, I just want to display it in the center.

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• What is a suitable way to correct this program? [closed]

  - by lamwaiman1988

  Possible Duplicate: How to deal with huge changes to a data specification? As described in this question, I need to modified a 4800 line c program to fulfill the new functional specification. However I have no idea of HOW to do it. Background: There is a updated version of a header file which the program depends on. I've speculated the changes and found that at least 30 critical changes are present. With the new header file, the c program cannot even compile. The error is too much that the compile said "too much error" and don't list every one. Unlike normal modification which can be easily test, this has no way to test without overcoming the 30 critical changes. For example, there would be no point to run the modified program with the old header file. On the other hand, with the new header file, the program can't run until I've covered every one of the 30 critical changes scattered in the new header file so that I can't even verify the correctness of each modification until there is no more compilation error. Do you have any idea to deal with this situation?

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• Problem with saving pictures in certain ways [migrated]

  - by user132750

  I am making a Garfield comic viewer in C#. I have a button that saves the comic on screen to the computer. However, when I compile it from Visual C# Express, it saves perfectly. When I run the exe file from the directory, I get an unhandled exception message stating "A generic error occurred in GDI+". Here is my saving code: private void save_Click(object sender, EventArgs e) { using (SaveFileDialog sfdlg = new SaveFileDialog()) { sfdlg.Title = "Save Dialog"; sfdlg.Filter = "Bitmap Images (*.bmp)|*.bmp|All files(*.*)|*.*"; if (sfdlg.ShowDialog(this) == DialogResult.OK) { using (Bitmap bmp = new Bitmap(pictureBox1.Image.Width, pictureBox1.Image.Height)) { pictureBox1.DrawToBitmap(bmp, new Rectangle(0, 0, bmp.Width, bmp.Height)); pictureBox1.Image = new Bitmap(pictureBox1.Image.Width, pictureBox1.Image.Height); pictureBox1.Image.Save("c://cc.Jpg"); bmp.Save(sfdlg.FileName); pictureBox1.ImageLocation = "http://garfield.com/uploads/strips" + "/" + whole.ToString("yyyy-MM-dd") + ".jpg"; MessageBox.Show("Comic Saved."); } } } } What can I do?

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• Having trouble binding a ksoap object to an ArrayList in Android

  - by Maskau

  I'm working on an app that calls a web service, then the webservice returns an array list. My problem is I am having trouble getting the data into the ArrayList and then displaying in a ListView. Any ideas what I am doing wrong? I know for a fact the web service returns an ArrayList. Everything seems to be working fine, just no data in the ListView or the ArrayList.....Thanks in advance! EDIT: So I added more code to the catch block of run() and now it's returning "org.ksoap2.serialization.SoapObject".....no more no less....and I am even more confused now... package com.maskau; import java.util.ArrayList; import org.ksoap2.SoapEnvelope; import org.ksoap2.serialization.PropertyInfo; import org.ksoap2.serialization.SoapObject; import org.ksoap2.serialization.SoapSerializationEnvelope; import org.ksoap2.transport.AndroidHttpTransport; import android.app.*; import android.os.*; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.EditText; import android.widget.ListView; import android.widget.TextView; import android.view.View; import android.view.View.OnClickListener; public class Home extends Activity implements Runnable{ /** Called when the activity is first created. */ public static final String SOAP_ACTION = "http://bb.mcrcog.com/GetArtist"; public static final String METHOD_NAME = "GetArtist"; public static final String NAMESPACE = "http://bb.mcrcog.com"; public static final String URL = "http://bb.mcrcog.com/karaoke/service.asmx"; String wt; public static ProgressDialog pd; TextView text1; ListView lv; static EditText myEditText; static Button but; private ArrayList<String> Artist_Result = new ArrayList<String>(); @Override public void onCreate(Bundle icicle) { super.onCreate(icicle); setContentView(R.layout.main); myEditText = (EditText)findViewById(R.id.myEditText); text1 = (TextView)findViewById(R.id.text1); lv = (ListView)findViewById(R.id.lv); but = (Button)findViewById(R.id.but); but.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { wt = ("Searching for " + myEditText.getText().toString()); text1.setText(""); pd = ProgressDialog.show(Home.this, "Working...", wt , true, false); Thread thread = new Thread(Home.this); thread.start(); } } ); } public void run() { try { SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME); PropertyInfo pi = new PropertyInfo(); pi.setName("ArtistQuery"); pi.setValue(Home.myEditText.getText().toString()); request.addProperty(pi); SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); envelope.dotNet = true; envelope.setOutputSoapObject(request); AndroidHttpTransport at = new AndroidHttpTransport(URL); at.call(SOAP_ACTION, envelope); java.util.Vector<Object> rs = (java.util.Vector<Object>)envelope.getResponse(); if (rs != null) { for (Object cs : rs) { Artist_Result.add(cs.toString()); } } } catch (Exception e) { // Added this line, throws "org.ksoap2.serialization.SoapObject" when run Artist_Result.add(e.getMessage()); } handler.sendEmptyMessage(0); } private Handler handler = new Handler() { @Override public void handleMessage(Message msg) { ArrayAdapter<String> aa; aa = new ArrayAdapter<String>(Home.this, android.R.layout.simple_list_item_1, Artist_Result); lv.setAdapter(aa); try { if (Artist_Result.isEmpty()) { text1.setText("No Results"); } else { text1.setText("Complete"); myEditText.setText("Search Artist"); } } catch(Exception e) { text1.setText(e.getMessage()); } aa.notifyDataSetChanged(); pd.dismiss(); } }; }

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• WPF DataContext does not refresh the DataGrid using MVVM model

  - by vikram bhatia

  Project Overview I have a view which binds to a viewmodel containing 2 ObserverableCollection. The viewmodel constructor populates the first ObserverableCollection and the view datacontext is collected to bind to it through a public property called Sites. Later the 2ed ObserverableCollection is populated in the LoadOrders method and the public property LoadFraudResults is updated for binding it with datacontext. I am using WCF to pull the data from the database and its getting pulled very nicely. VIEWMODEL SOURCE class ManageFraudOrderViewModel:ViewModelBase { #region Fields private readonly ICollectionView collectionViewSites; private readonly ICollectionView collectionView; private ObservableCollection<GeneralAdminService.Website> _sites; private ObservableCollection<FraudService.OrderQueue> _LoadFraudResults; #endregion #region Properties public ObservableCollection<GeneralAdminService.Website> Sites { get { return this._sites; } } public ObservableCollection<FraudService.OrderQueue> LoadFraudResults { get { return this._LoadFraudResults;} } #endregion public ManageFraudOrderViewModel() { //Get values from wfc service model GeneralAdminService.GeneralAdminServiceClient generalAdminServiceClient = new GeneralAdminServiceClient(); GeneralAdminService.Website[] websites = generalAdminServiceClient.GetWebsites(); //Get values from wfc service model if (websites.Length > 0) { _sites = new ObservableCollection<Wqn.Administration.UI.GeneralAdminService.Website>(); foreach (GeneralAdminService.Website website in websites) { _sites.Add((Wqn.Administration.UI.GeneralAdminService.Website)website); } this.collectionViewSites= CollectionViewSource.GetDefaultView(this._sites); } generalAdminServiceClient.Close(); } public void LoadOrders(Wqn.Administration.UI.FraudService.Website website) { //Get values from wfc service model FraudServiceClient fraudServiceClient = new FraudServiceClient(); FraudService.OrderQueue[] OrderQueue = fraudServiceClient.GetFraudOrders(website); //Get values from wfc service model if (OrderQueue.Length > 0) { _LoadFraudResults = new ObservableCollection<Wqn.Administration.UI.FraudService.OrderQueue>(); foreach (FraudService.OrderQueue orderQueue in OrderQueue) { _LoadFraudResults.Add(orderQueue); } } this.collectionViewSites= CollectionViewSource.GetDefaultView(this._LoadFraudResults); fraudServiceClient.Close(); } } VIEW SOURCE public partial class OrderQueueControl : UserControl { private ManageFraudOrderViewModel manageFraudOrderViewModel ; private OrderQueue orderQueue; private ButtonAction ButtonAction; private DispatcherTimer dispatcherTimer; public OrderQueueControl() { LoadOrderQueueForm(); } #region LoadOrderQueueForm private void LoadOrderQueueForm() { //for binding the first observablecollection manageFraudOrderViewModel = new ManageFraudOrderViewModel(); this.DataContext = manageFraudOrderViewModel; } #endregion private void cmbWebsite_SelectionChanged(object sender, SelectionChangedEventArgs e) { BindItemsSource(); } #region BindItemsSource private void BindItemsSource() { using (OverrideCursor cursor = new OverrideCursor(Cursors.Wait)) { if (!string.IsNullOrEmpty(Convert.ToString(cmbWebsite.SelectedItem))) { Wqn.Administration.UI.FraudService.Website website = (Wqn.Administration.UI.FraudService.Website)Enum.Parse(typeof(Wqn.Administration.UI.FraudService.Website),cmbWebsite.SelectedItem.ToString()); //for binding the second observablecollection******* manageFraudOrderViewModel.LoadOrders(website); this.DataContext = manageFraudOrderViewModel; //for binding the second observablecollection******* } } } #endregion } XAML ComboBox x:Name="cmbWebsite" ItemsSource="{Binding Sites}" Margin="5" Width="100" Height="25" SelectionChanged="cmbWebsite_SelectionChanged" DataGrid ItemsSource ={Binding Path = LoadFraudResults} PROBLEM AREA: When I call the LoadOrderQueueForm to bind the first observablecollection and later BindItemsSource to bind 2ed observable collection, everything works fine and no problem for the first time binding. But, when I call BindItemsSource again to repopulate the obseravablecollection based on changed selected combo value via cmbWebsite_SelectionChanged, the observalblecollection gets populated with new value and LoadFraudResults property in viewmodule is populated with new values; but when i call the datacontext to rebind the datagrid,the datagrid does not reflect the changed values. In other words the datagrid doesnot get changed when the datacontext is called the 2ed time in BindItemsSource method of the view. manageFraudOrderViewModel.LoadOrders(website); this.DataContext = manageFraudOrderViewModel; manageFraudOrderViewModel values are correct but the datagrid is not relected with changed values. Please help as I am stuck with this thing for past 2 days and the deadline is approaching near. Thanks in advance

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• Update UI in the main activity through handler in a thread (Android)

  - by Hrk

  Hello, I try to make several connection in a class and update the multiple progressbar in the main screen. But I've got the following error trying to use thread in android : Code: 05-06 13:13:11.092: ERROR/ConnectionManager(22854): ERROR:Can't create handler inside thread that has not called Looper.prepare() Here is a small part of my code in the main Activity public class Act_Main extends ListActivity { private ConnectionManager cm; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Set up the window layout requestWindowFeature(Window.FEATURE_CUSTOM_TITLE); setContentView(R.layout.main); getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.custom_title); } public void startConnection() { //open DB connection db = new DBAdapter(getApplicationContext()); db.open(); cm = new ConnectionManager(handler, db); showDialog(DIALOG_PROGRESS_LOGIN); } @Override public void onStart() { super.onStart(); startConnection(); } protected Dialog onCreateDialog(int id) { switch (id) { case DIALOG_PROGRESS_LOGIN: progressDialog = new ProgressDialog(Act_Main.this); progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); progressDialog.setMessage("Connecting.\nPlease wait..."); progressThreadLogin = new ProgressThreadLogin(); progressThreadLogin.start(); return progressDialog; case DIALOG_PROGRESS_NETWORK: [b]progressDialog = new ProgressDialog(Act_Main.this);[/b] progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); progressDialog.setMessage("Loading entire network.\nPlease wait..."); progressThreadNetwork = new ProgressThreadNetwork(); progressThreadNetwork.start(); return progressDialog; default: return null; } } // Define the Handler that receives messages from the thread and update the progress final Handler handler = new Handler() { public void handleMessage(Message msg) { int total = msg.getData().getInt("total"); int step = msg.getData().getInt("step"); Log.d(TAG, "handleMessage:PROCESSBAR:"+total); progressDialog.setProgress(total); if (total >= 100) { switch (step) { case UPDATE_NETWORK: dismissDialog(DIALOG_PROGRESS_LOGIN); showDialog(DIALOG_PROGRESS_NETWORK); cm.getNetwork(); break; .... default: break; } } } }; private class ProgressThreadLogin extends Thread { ProgressThreadLogin() { } public void run() { cm.login(); } } private class ProgressThreadNetwork extends Thread { ProgressThreadNetwork() { } public void run() { cm.getNetwork(); } } } And my connectionManager class: public class ConnectionManager { public ConnectionManager(Handler handler, DBAdapter db) { this.handler = handler; this.db = db; } public void updateProgressBar(int step, int value) { if (value == 0) total = total+1; else total = value ; Message msg = handler.obtainMessage(); Bundle b = new Bundle(); b.putInt("total", total); b.putInt("step", step); msg.setData(b); handler.handleMessage(msg); } public void login() { //DO MY LOGIN TASK updateProgressBar(Act_Main.UPDATE_NETWORK, 100); } } The crash errors occurs on the first line of "case DIALOG_PROGRESS_NETWORK:". My first progressbar is hidden but the second one is not displayed. I think I've done somthing wrong using the threads and handlers but I dont' know why. I was first using handler.sendMessage in place of handler.handleMessage but when I had several task in my connectionManager, the progressbar was updated only at the end of all tasks. Thank you in advance for your help

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• WPF TabItem Custom ContentTemplate

  - by lloydsparkes

  I have been strugging with this for a while, it would have been simple to do in WindowForms. I am making a IRC Client, there will be a number of Tabs one for each channel connect to. Each Tab needs to show a number of things, UserList, MessageHistory, Topic. In WindowForms i would just have inherited from TabItem, added some Custom Properties, and Controls, and done. In WPF i am having some slight issues with working out how to do it. I have tried many ways of doing it, and below is my current method, but i cannot get the TextBox to bind to the Topic Property. <Style TargetType="{x:Type t:IRCTabItem}" BasedOn="{StaticResource {x:Type TabItem}}" > <Setter Property="ContentTemplate"> <Setter.Value> <DataTemplate> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="540" /> <ColumnDefinition /> </Grid.ColumnDefinitions> <StackPanel Grid.Column="0"> <TextBox Text="{Binding Topic, RelativeSource={RelativeSource AncestorType={x:Type t:IRCTabItem}}}" /> </StackPanel> </Grid> </DataTemplate> </Setter.Value> </Setter> </Style> And the Codebehind public class IRCTabItem : TabItem { static IRCTabItem() { //This OverrideMetadata call tells the system that this element wants to provide a style that is different than its base class. //This style is defined in themes\generic.xaml //DefaultStyleKeyProperty.OverrideMetadata(typeof(IRCTabItem), // new FrameworkPropertyMetadata(typeof(IRCTabItem))); } public static readonly RoutedEvent CloseTabEvent = EventManager.RegisterRoutedEvent("CloseTab", RoutingStrategy.Bubble, typeof(RoutedEventHandler), typeof(IRCTabItem)); public event RoutedEventHandler CloseTab { add { AddHandler(CloseTabEvent, value); } remove { RemoveHandler(CloseTabEvent, value); } } public override void OnApplyTemplate() { base.OnApplyTemplate(); Button closeButton = base.GetTemplateChild("PART_Close") as Button; if (closeButton != null) closeButton.Click += new System.Windows.RoutedEventHandler(closeButton_Click); } void closeButton_Click(object sender, System.Windows.RoutedEventArgs e) { this.RaiseEvent(new RoutedEventArgs(CloseTabEvent, this)); } public bool Closeable { get; set; } public static readonly DependencyProperty CloseableProperty = DependencyProperty.Register("Closeable", typeof(bool), typeof(IRCTabItem), new FrameworkPropertyMetadata(true, FrameworkPropertyMetadataOptions.BindsTwoWayByDefault)); public List<String> UserList { get; set; } public static readonly DependencyProperty UserListProperty = DependencyProperty.Register("UserList", typeof(List<String>), typeof(IRCTabItem), new FrameworkPropertyMetadata(new List<String>(), FrameworkPropertyMetadataOptions.BindsTwoWayByDefault)); public String Topic { get; set; } public static readonly DependencyProperty TopicProperty = DependencyProperty.Register("Topic", typeof(String), typeof(IRCTabItem), new FrameworkPropertyMetadata("Not Connected", FrameworkPropertyMetadataOptions.BindsTwoWayByDefault)); public bool HasAlerts { get; set; } public static readonly DependencyProperty HasAlertsProperty = DependencyProperty.Register("HasAlerts", typeof(bool), typeof(IRCTabItem), new FrameworkPropertyMetadata(false, FrameworkPropertyMetadataOptions.BindsTwoWayByDefault)); } So my questions are: Am i doing it the right way (best practices)? If so how can i bind DataTemplate to Properties? If not so, what is the correct way of achieve what i am trying to achieve?

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• Is Inheritance in Struts2 Model-Driven Action possible?

  - by mryan

  Hello, I have a Model-Driven Struts2 action that provides correct JSON response. When I re-structure the action I get an empty JSON response back. Has anyone got inheritance working with Struts2 Model-Driven actions? Ive tried explicitly setting include properties in struts config: <result name="json" type="json"> <param name="includeProperties"> jsonResponse </param> </result> Code for all actions below - not actual code in use - I have edited and stripped down for clarity. Thanks in advance. Action providing correct response: public class Bike extends ActionSupport implements ModelDriven, Preparable { @Autowired private Service bikeService; private JsonResponse jsonResponse; private com.ets.model.Vehicle bike; private int id; public Bike() { jsonResponse = new JsonResponse("Bike"); } @Override public void prepare() throws Exception { if (id == 0) { bike = new com.ets.model.Bike(); } else { bike = bikeService.find(id); } } @Override public Object getModel() { return bike; } public void setId(int id) { this.id = id; } public void setBikeService(@Qualifier("bikeService") Service bikeService) { this.bikeService = bikeService; } public JsonResponse getJsonResponse() { return jsonResponse; } public String delete() { try { bike.setDeleted(new Date(System.currentTimeMillis())); bikeService.updateOrSave(bike); jsonResponse.addActionedId(id); jsonResponse.setAction("delete"); jsonResponse.setValid(true); } catch (Exception exception) { jsonResponse.setMessage(exception.toString()); } return "json"; } } Re-structured Actions providing incorrect response: public abstract class Vehicle extends ActionSupport implements ModelDriven { @Autowired protected Service bikeService; @Autowired protected Service carService; protected JsonResponse jsonResponse; protected com.ets.model.Vehicle vehicle; protected int id; protected abstract Service service(); @Override public Object getModel() { return bike; } public void setId(int id) { this.id = id; } public void setBikeService(@Qualifier("bikeService") Service bikeService) { this.bikeService = bikeService; } public void setCarService(@Qualifier("carService") Service carService) { this.carService = carService; } public JsonResponse getJsonResponse() { return jsonResponse; } public String delete() { try { vehicle.setDeleted(new Date(System.currentTimeMillis())); service().updateOrSave(vehicle); jsonResponse.addActionedId(id); jsonResponse.setAction("delete"); jsonResponse.setValid(true); } catch (Exception exception) { jsonResponse.setMessage(exception.toString()); } return "json"; } } public class Bike extends Vehicle implements Preparable { public Bike() { jsonResponse = new JsonResponse("Bike"); } @Override public void prepare() throws Exception { if (id == 0) { vehicle = new com.ets.model.Bike(); } else { vehicle = bikeService.find(id); } } @Override protected Service service() { return bikeService; } } public class Car extends Vehicle implements Preparable { public Car() { jsonResponse = new JsonResponse("Car"); } @Override public void prepare() throws Exception { if (id == 0) { vehicle = new com.ets.model.Car(); } else { vehicle = carService.find(id); } } @Override protected Service service() { return carService; } }

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• ASP.NET MVC : AJAX ActionLink - Persist Data

  - by Mio

  Hi guys, I'm really new at this and I was searching the web for an answer to my question and I couldn't find it, so here I am posting my question :) I'm trying to create a new record in my table Facility. For my goreign keys I'm displaying the choices in tables instead of a dropdowns. When the user clicks on the select link which is an Ajax.ActionLink(), I wanna retrieve the right record from the DB and set the foreign key of my object Facility to the one slected and replace the Div by a new Partial View. The problem is when I try to submit the form, the Facility object doesnt seem to have the foreign key that I've just set in my ajax fuction in my controller. And if the user has enter some data in the other fields of the create form, I don't them to lose what they already entered. Here's my code. Model only contains a Facility. public ActionResult Create() { Model.Facility = new Facility(); return View(Model); } This is part of my Create View <div id="FacilityTypePartialView"> <% Html.RenderPartial("FacilityType"); %> </div> This is my Partial View FacilityType <% if (Model.IsNewFacility()) { %> <p> Id: <%= Html.Encode(Model.Facility.FacilityType.FId)%> </p> <p> Type: <%= Html.Encode(Model.Facility.FacilityType.FType)%> </p> <p> Description: <%= Html.Encode(Model.Facility.FacilityType.FDescription) %> </p> <% } %> <p> <%= Html.ActionLink("Manage Facility Type", "Index","FacilityType") %> </p> <table id="FacilityTypesList"> <tr> <th> Select </th> <th> FId </th> <th> FType </th> <th> FDescription </th> </tr> <% foreach (var item in Model.GetFacilityTypes()) { %> <tr> <td> <%=Ajax.ActionLink("Select", "FacilityTypeSelect", new { id = item.FId}, new AjaxOptions { UpdateTargetId = "FacilityTypePartialView" })%> </td> <td> <%= Html.Encode(item.FId) %> </td> <td> <%= Html.Encode(item.FType) %> </td> <td> <%= Html.Encode(item.FDescription) %> </td> </tr> <% } %> </table> Here's y Ajax Funcion public PartialViewResult FacilityTypeSelect(int id) { Facility facility = new Facility(); facility.FacilityType = _repository.GetFacilityType(id); Model.Facility = facility; if (this.Request.IsAjaxRequest() == false) { return PartialView("FacilityType/FacilityType", Model); } else { return PartialView("FacilityType/FacilityTypeSelected", Model); } } Finally, my Post method [AcceptVerbs(HttpVerbs.Post)] public ActionResult Create( Facility facility) { Model.Facility = facility; if (ModelState.IsValid) { try { _repository.AddEntity(facility); _repository.Save(); return RedirectToAction("Details", new { id = facility.Id }); } catch { } } return View("Create", Model); } My Faciliy object coming from the View have the Facility.FacilityType set to nothing.

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