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• How do I Relate these 4 Tables

  - by Baddie

  Trying to setup a simple Thread/Poll table mapping. Here is what I have: Threads table ThreadID (Primary Key/Identity Column) Polls table PollID (Primary Key, FK for ThreadID for one-to-one relation) Question PollOptions table PollOptionID (Identity/Primary Key) Text PollID PollVotes table PollVoteID (Primary Key/Identity) PollOptionID I'm not sure if this is a proper relationship. It seems wrong but I'm not sure whats wrong with it. A Thread can have 0 or 1 Poll. A Poll can have 2 or more PollOptions. A PollOption can have 0 or many PollVotes. I'm going to be using Entity Framework and before I generate the code for it (VS 2010, .NET 4) I want to make sure I have the proper relationship mapping.

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• Downloading PKPass in an iOS custom app from my server

  - by taurus

  I've setup a server which returns a PKPass. If I copy the URL to the browser, a pass is shown (both in my Mac and in my iPhone). The code I'm using to download the pass is the following one: NSData *data = [[NSData alloc] initWithContentsOfURL:[NSURL URLWithString:kAPIPass]]; if (nil != data) { PKPass *pass = [[PKPass alloc] initWithData:data error:nil]; PKAddPassesViewController *pkvc = [[PKAddPassesViewController alloc] initWithPass:pass]; pkvc.delegate = self; [self presentViewController:pkvc animated:YES completion:^{ // Do any cleanup here } ]; } Anyway, when I run this code I have the following error: * Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Only support RGBA or the White color space, this method is a hack.' I don't know what is the bug... The pass seems ok when I download it with Safari and even the code seems ok (there are just 3 simple rows...) Someone experienced with Passkit could help me? EDIT: the weird thing is that the exact same code is working in a fresh new project

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• How disable RequiredFieldValidator in script

  - by jlp

  I have TextBox with RequiredFieldValidator on my page. I also have link that calls some simple javascript. <asp:TextBox ID="TextBox1" runat="server" /> <asp:RequiredFieldValidator ID="RequiredFieldValidator4" runat="server" ControlToValidate="TextBox1" Display="Dynamic" /> <asp:LinkButton ID="Link1" runat="server" OnClientClick="DoSomething(); return false;" CausesValidation="false"Text="Do" /> function DoSomething() { textbox1.val("blah"); } How to prevent RequiredFieldValidator to fire when TextBox1 is empty and it looses focus? I want RequiredFieldValidator only to fire on postback.

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• More specific NSNumberFormatter failure behaviour

  - by Volte

  I have an NSTextField into which I need the user to enter a number between a max and min, and it would be nice if I could detect when the NSNumberFormatter fails that particular test so I can either display a nicer message ("The number is too large" is not very helpful, it needs to display the valid range) or simply set the field automatically to the nearest valid value. I've looked at the NSTextField delegate's -control:didFailToFormatString:errorDescription: method which doesn't seem to allow you to modify the error, and I've looked at overriding the NSNumberFormatter's -getObjectValue:forString:range:error: method which does give me an NSError that I can modify, but there doesn't seem to be any way to determine which specific error was returned. Since I am just entering a simple integer, I don't need most of the functionality in NSNumberFormatter, would I be better off just writing my own formatter from scratch?

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• How are SaaS applications organized?

  - by tomekw

  Consider web (MVC, for example Rails) application for multiple clients as a service. How to design this? one application instance per client? (+ one database per client) one instance for all clients (+ one database for all clients) Former one is simple, but... "inefficient". How about the latter? (best practises, design patterns) How to separate client data? For example: worker "A" of client "1" has two documents, worker "B" of client "2" has three documents. How to build model associations to protect other users (and clients) data? I think joining every query with Client model is not a good solution.

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• Calling linux utilities with options from within a Bash script.

  - by Kyle

  This is my first Bash script so forgive me if this question is trivial. I need to count the number of files within a specified directory $HOME/.junk. I thought this would be simple and assumed the following would work: numfiles= find $HOME/.junk -type f | wc -l echo "There are $numfiles files in the .junk directory." Typing find $HOME/.junk -type f | wc -l at the command line works exactly how I expected it to, simply returning the number of files. Why is this not working when it is entered within my script? Am I missing some special notation when it comes to passing options to the utilities? Thank you very much for your time and help.

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• possible to create sql query with table wildcards?

  - by Rees

  this is probably a simple question, but i have been unable to find a solution online, any help would be much appreciated. I'm trying to create an SQL query in PHP and would like to somehow apply a wild card to the TABLE filter... something perhaps like.... select * from %table%. However, I have only so far been able to see filters for column values not table names. as an example i would have tables such as: jan_table_1 feb_table_1 jan_table_2 feb_table_2 and would want to say, select only tables with a "jan" prefix... or "1" suffix. Is there a quick and easy solution to this that I have not seen? Thanks in advance!

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• UICollectionViewController nested in a normal UIViewController

  - by patrickS

  I have added a UICollectionView into a normal ViewController (MainViewController), and than created a UICollectionViewController Subclass (CollectionViewController) in the ViewController and connected the UICollectionView outlet with the CollectionViewController object _collectionViewController = [[CollectionViewController alloc] initWithCollectionViewLayout:_collectionView.collectionViewLayout]; _collectionView.dataSource = _collectionViewController; _collectionView.delegate = _collectionViewController; In the CollectionViewController I have setup an simple NSArray object and I show this one. This works as expected. But If I try to access the collectionview from the CollectionViewController via self.collectionview I am not able to access this one. I dont know what I have to do, to also connect the collectionview. I have build a sample ios-app it is available at: https://github.com/patricks/uicollectionview-problem The method - (void)outputSelectedCell in the UICollectionViewController always shows, that there is nothing selected… I hope you understand the problem.

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• Linq Grouping by 2 keys as a one

  - by Evgeny

  Hello! I write a simple OLAP viewer for my web-site. Here are the classes (abstract example): Employee { ID; Name; Roles[]; //What Employee can do } Order { Price; Employee Manager; Employee Executive; //Maybe wrong english. The person which perform order } Employee can be Manager and Executive in the order at the same time. This means that Employee role is not fixed. I have to group orders by employees and finally get IGrouping with Employee key. So .GroupBy(el=new {el.Manager,el.Executive}) is not allowed. I considered some tricks with IEqualityComparable, but found no solution. If somrbody will help I'll be vary glad, thank you.

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• Concurency problem with Isolation - read-committed

  - by Ratn Deo--Dev

  I have to write a simple demo for amount withdrawl from a joint Bank amount .Andy and Jen holds a joint bank account with number 123 . Suppose they have 100$ in their account .Jen and Andy are operating their account at the same time and both are trying to withdraw 90$ at the time being .My transaction Isolation is set to read-committed and both are able to withdraw money leaving the balance to -(minus)80$ although I have constraint that balance should never be less than 0. I am using hibernate .Is versioning only way to solve this problem or I should go for another Isolation level ?

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• Hidden Features of Visual Studio winforms designer

  - by CodingBarfield

  One of the most loved and hated feautures of visual studio must be the form designer. Creating a simple form/user control layout usually is a breeze. Setting properties and adding events is easy. Setting up the toolbox to use you own controls can be a bit harder and getting the ToolBoxIcons to show up can be a pain. Using third party components by visual inheritance can throw of the designer. And using multiple inheritance on designerables can be really hard. So what are your favorite 'hidden' and or obvious visual studio designer features.

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• IAR Embedded Workbench MSP430 and *.lib files linking

  - by jeniusj

  I was assuming that it was a really simple task but I did not find anything relevant or my mistake. So putting my problem here i.e. I have some project for MSP430 which is actually in code composer studio. I have to run this whole code into IAR embedded workbench now. There are some library files(*.lib) that are also provided with the project and that should have to be linked to build the project. After little modifications code is compiling fine but I am unable to link the libraries and getting linker errors. I worked on IAR with avr but very very little just to test some sample codes. I did not find the option where to mention these library names and their respective paths. I checked out the linker tab but I am not getting any clue to link these .lib files with project.

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• Recieving server broadcast on mobile in real time

  - by Manjoor

  I have to write a simple mobile application that is able to recieve broadcast from a server, connected using GPRS, over a secure SSL connection. The amount of data mobile need to recieve is very small (about 100 character string for a single broadcast and maximum 10 broadcast per minute) I need to display it on screen and generate a alert sound (and vibrate the device). Client need not to send anything back to server. (ofcourse at the time of intialization the client app need to send some data for authorization) The target mobile plateform is symbion S60 and Blackberry. How can i do this? What tools, SDK and Third party framework (if needed) i should use? I am familier with java and network programming but not for mobile device.

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• How to render a Partial from a Model in Rails 2.3.5

  - by empire29

  I have a Rails 2.3.5 application and Im trying to render several Partials from within a Model (i know, i know -- im not supposed to). The reason im doing this is im integrating a Comet server (APE) into my Rails app and need to push updates out based on the Model's events (ex. after_create). I have tried doing this: ActionView::Base.new(Rails::Configuration.new.view_path).render(:partial => "pages/show", :locals => {:page => self}) Which allows me to render simple partials that don't user helpers, however if I try to user a link_to in my partial, i receive an error stating: undefined method `url_for' for nil:NilClass I've made sure that the object being passed into the "project_path(project)" is not nil. I've also tried including: include ActionView::Helpers::UrlHelper include ActionController::UrlWriter in the Module that contains the method that makes the above "render" call. Does anyone know how to work around this? Thanks

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• Android serialization: ImageView

  - by embo

  I have a simple class: public class Ball2 extends ImageView implements Serializable { public Ball2(Context context) { super(context); } } Serialization ok: private void saveState() throws IOException { ObjectOutputStream oos = new ObjectOutputStream(openFileOutput("data", MODE_PRIVATE)); try { Ball2 data = new Ball2(Game2.this); oos.writeObject(data); oos.flush(); } catch (Exception e) { Log.e("write error", e.getMessage(), e); } finally { oos.close(); } } But deserealization private void loadState() throws IOException { ObjectInputStream ois = new ObjectInputStream(openFileInput("data")); try { Ball2 data = (Ball2) ois.readObject(); } catch (Exception e) { Log.e("read error", e.getMessage(), e); } finally { ois.close(); } } fail with error: 03-24 21:52:43.305: ERROR/read error(1948): java.io.InvalidClassException: android.widget.ImageView; IllegalAccessException How deserialize object correctly?

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• [java bean]hibernate Session breaks a java bean?

  - by blow

  Hi all, i have a simple JPanel bean in my projects, now i want to drag my panel bean class into my jframe. My panel bean class is like this: public class BeanPanel extends javax.swing.JPanel { /** Creates new form BeanPanel */ public BeanPanel () { initComponents(); Session session=HibernateUtil.getSessionFactory().openSession(); } This code seem to break the bean: Session session=HibernateUtil.getSessionFactory().openSession(); When i try to drag the class into my JFrame bean i had this error message: This component cannot be instantiated. Please make sure it is a JavaBeans Component If i comment it all works fine. What is the reason of this? Thanks.

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• How do I remove (or apply) transparency on a gdk-pixbuf?

  - by Andrew Stacey

  I have a c++ program in which a gdk-pixbuf is created. I want to output it as an image, so I call gdk_pixbuf_save_to_stream(pixbuf,stream,type,NULL,&err,NULL). This works fine when "type" is png or tiff, but with jpeg or bmp it just produces a black square. The original pixbuf consists of black-on-transparent (and gdk_pixbuf_get_has_alpha returns true) so I'm guessing that the problem is with the alpha mask. GdkPixbuf has a function to add an alpha channel, but I can't see one that removes it again, or (which might be as good) to invert it. Is there a simple way to get the jpeg and bmp formats to work properly? (I should say that I'm very new to proper programming like this.)

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• protect php result

  - by siko

  hii i had simple php file to protect wmv files from downloading and stolen the file is like this <?php // get-file.php $id = (isset($_GET["id"])) ? strval($_GET["id"]) : "1"; // lookup $url[1] = 'http://mlfat.ledawy.net/Files/eng/moslslat/mosque/1.wmv'; $url[2] = 'URL'; $url[3] = 'URL'; header('Content-Type: text/plain'); echo("$url[$id]"); ?> and i embedd the movies like this http:// mlfat.ledawy.net/Files/eng/moslslat/mosque/mosque.php?id=1 but if you call this link you can find the source url can i have some protection ?? tried a lot of adding a php session variable so that the script can not be accessed directly. thank you

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• WCF REST based services authentication schemes

  - by FlySwat

  I have a simple authentication scheme for a set of semi-public REST API's we are building: /-----------------------\ | Client POST's ID/Pass | | to an Auth Service | \-----------------------/ [Client] ------------POST----------------------> [Service/Authenticate] | /-------------------------------\ | Service checks credentials | [Client] <---------Session Cookie------- | and generates a session token | | | in a cookie. | | \-------------------------------/ | [Client] -----------GET /w Cookie -------------> [Service/Something] | /----------------------------------\ | Client must pass session cookie | | with each API request | | or will get a 401. | \----------------------------------/ This works well, because the client never needs to do anything except receive a cookie, and then pass it along. For browser applications, this happens automatically by the browser, for non browser applications, it is pretty trivial to save the cookie and send it with each request. However, I have not figured out a good approach for doing the initial handshake from browser applications. For example, if this is all happening using a AJAX technique, what prevents the user from being able to access the ID/Pass the client is using to handshake with the service? It seem's like this is the only stumbling block to this approach and I'm stumped.

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• Force save files all browsers - not open in browser window

  - by Joshc

  I'm after a simple solution to work in all browsers. For specific file types, or targeted links via a class: how can I get them to simply force download in all major browsers. I thought I found the perfect solution for apachce server - by adding this into the .htaccess. http://css-tricks.com/snippets/htaccess/force-files-to-download-not-open-in-browser/ AddType application/octet-stream .csv AddType application/octet-stream .xls AddType application/octet-stream .doc AddType application/octet-stream .avi AddType application/octet-stream .mpg AddType application/octet-stream .mov AddType application/octet-stream .pdf Seems to work in Firefox and Safari, but not chrome or IE (have not tested anything else) Can any one please help me with a solution on how to make links to force download the file, instead of opening in the browser, for ALL browsers. I can't seem to find a full browser proof solution. Is it not possible? Any links to tutorial or snippets would be awesome. My website if PHP based so can make it work with PHP if posible. Thanks

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• TypeInitilazationException When Getting an NHibernate Session

  - by Paul Johnson

  I’ve run into what appears to be an NHibernate config problem. Basically, I ran up a simple proof of concept persistence integration test using NUnit, the test simply querys an Oracle database and successfully returns the last record received by the underlying table. However, when the assemblies are taken out of the NUnit test environment and deployed as they would be for an actual application build, my call for an NHibernate session results in a ‘TypeInitializationException’ whilst executing the code line: sessionFactory = New Configuration().Configure().BuildSessionFactory() The application is a vb.net console app running against an Oracle 9.2 database, using a ‘coding framework’ published on the web by Bill McCafferty entitled 'NHibernate Best Practices with ASP.NET' (pre S#harp Architecture). I am running version 2.1.2.4000 of NHibernate. Any assistance much appreciated. Kind Regards Paul J.

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• PHP does not return errors at all

  - by ErJab

  I am running PHP and nginx and I use a production version of php.ini. So the variable display_error is set to Off and there is a good reason I want it this way. But for certain files I need to enable error reporting. I used ini_set to turn on error reporting. But a simple code snippet like: <?php error_reporting(E_ALL); ini_set("display_errors", 1); echo "hi"errorrrrr ?> does not trace the error. It simply returns a HTTP 500 Internal Server Error message. What should I do to enable error reporting?

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• iPhone Web Development Image Scaling

  - by Dominic Godin

  I am developing a simple web page to be viewed after an iphone application completes. I am finding the safari degrades the image quality of the jpg so its all fuzzy. The image is background image applied to a div div.foo { background: url(../images/foo.jpg) no-repeat; width:320px; height:349px; } The width and height are exactly the same as the jpg image. Is there a way to make sure the image gets displayed in its full quality?

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• HTML/Javascript change div content

  - by Rob

  HI, I have simple HTML code with some javascript, it looks like: <html> <head><script type="text/javascript">...</script></head> <body> <input type="radio" name="radiobutton" value="A" onClick="changeDivContent()"> <input type="radio" name="radiobutton" value="B" onClick="changeDivContent()"> <div id="content"></div> </body> </html> I just wanted to be able change div's content (it's inner html) with selecting one of "A" or "B" radio buttons, but div#content does not have javascript attribute "value", so I am asking how it can be done. Thank you!

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• NHibernate mapping one table on two classes with where selection

  - by Rene Schulte

  We would like to map a single table on two classes with NHibernate. The mapping has to be dynamically depending on the value of a column. Here's a simple example to make it a bit clearer: We have a table called Person with the columns id, Name and Sex. The data from this table should be mapped either on the class Male or on the class Female depending on the value of the column Sex. In Pseudocode: create instance of Male with data from table Person where Person.Sex = 'm'; create instance of Female with data from table Person where Person.Sex = 'f'; The benefit is we have strongly typed domain models and can later avoid switch statements. Is this possible with NHibernate or do we have to map the Person table into a flat Person class first? Then afterwards we would have to use a custom factory method that takes a flat Person instance and returns a Female or Male instance. Would be good if NHibernate (or another library) can handle this.

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