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• Struts 2 Select tag

  - by nathj07

  I'm pretty new to the jsp and struts way of doing things and so far I like what I see. My current question is with the use of the struts select tag. I have a page that displays a number of dropdown boxes using struts select currently the options are hard coded in the jsp. I would like to populate them based on a properties file. However I have no idea where to start. I assume I need to take the contents of a properties file into an Array (of some sort) and assign that to the select tag. My questions are: Where does the code t build the array go? How do I connect that array to the select tag?

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• Customizing UISlider look

  - by tcurdt

  To customize the visual look of a UISlider you can set the thumb and track images. Part of the track images gets stretched to the appropriate with. From the documentation: A stretchable region sits between two end cap regions. The end caps define the portions of the image that remain as is and are not stretched. The stretchable region is a 1-point wide area between the end caps that can be replicated to make the image appear longer. Now the problem I have is that my stretchable region needs to be more than 1-point wide. (It's a pattern) Unfortunately the 1-point width seems to be hard coded in the SDK. Anyone having an idea how to work around this? Or will I have to write my own slider from scratch for this?

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• Blurred PNGs on UIView, using Interface Builder

  - by Christopher Stamper

  Hey everyone, I've added some UIImageViews with png images to my view, using interface builder. Initially they are added off-screen. Later, I animate them onto the screen with CoreAnimation, like so: [UIView beginAnimations:@"slide" context:nil]; [UIView setAnimationDuration:0.1f]; [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut]; [UIView setAnimationDelegate:self]; image.frame = CGRectMake(81+1, 390, 150, 80); [UIView commitAnimations]; Once they appear onscreen, they look really blurred or fuzzy. I've heard of this happening before. Does anyone have any idea how to fix it?

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• Rails messing up with HTTP POST Params

  - by Julien Genestoux

  Our app provides an API that people can use to submit URLs like this: curl -X POST http://app.local/resource -d'url=http://news.google.com/newshl=en&q=obama&um=1&ie=UTF-8&output=rss' Unfortunately, it seems that Rails messes up with this param. Any idea on how to fix this? See the log below : Processing ApplicationController#index (for 127.0.0.1 at 2010-06-08 19:03:09) [POST] Parameters: {"um"=>"1", "url"=>"http://news.google.com/newshl=en", "output"=>"rss", "q"=>"obama", "ie"=>"UTF-8"} I would expect the following : Parameters: {"url"=>"hhttp://news.google.com/newshl=en&q=obama&um=1&ie=UTF-8&output=rss"}

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• How to get data type property values using SPARQL

  - by udayalkonline

  hey, I have created some sample ontology in protege.According to my ontology there is a class called person and which has sub class called Student.There are some student individuals(john,paul,marry,...). I have diffiend some data property called "email" and assigned their email addresses. Following query which is resulting all the individuals in ontology.But I want to get each individual and their email address. String queryStr = "PREFIX rdfs: http://www.w3.org/2000/01/rdf-schema# "+ "PREFIX rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns# "+ "select ?ind "+ "where { "+ "?ind rdf:type http://www.semanticweb.org/ontologies/2010/5/Ontology1275975684120.owl#Student ;"+ "}\n "; Above query was tested on jena in eclipse IDE. any idea..? Thank in advance!

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• How to display configurable product in each color in product listing?

  - by Thomas

  I have a configurable product which is available in many different colors and sizes. I want the configurable product to appear once for every color. My idea is to assign one simple product of the configurable product in every color to the category of the configurable product. Then I want to change the listing, so that the (colored) simple product links to it's master product (the configurable one). The other way would be, to just assign the configurable product to a category and then list it multiple times with different colors. But I think this would be to complicated.

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• How atomic *should* I make an Ajax form?

  - by b. e. hollenbeck

  I have some web forms that I'm bringing over with AJAX, and as I was dealing with the database on the back end, I thought that it might be easier to just handle each input on the form atomically with AJAX, saving the form in 'real time' as the user edits it. The forms are ~20 fields of administrative settings. Would this create massive overhead with the app, cause it to be error-prone, or is this a feasible idea? Of course, contingent operations (like a checkbox that then requires a text entry) would be held until the textbox gained and lost focus. Comments?

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• MySQL/SQL: Update with correlated subquery from the updated table itself

  - by Roee Adler

  I have a generic question that I will try to explain using an example. Say I have a table with the fields: "id", "name", "category", "appearances" and "ratio" The idea is that I have several items, each related to a single category and "appears" several times. The ratio field should include the percentage of each item's appearances out of the total number of appearances of items in the category. In pseudo-code what I need is the following: For each category find the total sum of appearances for items related to it. For example it can be done with (select sum("appearances") from table group by category) For each item set the ratio value as the item's appearances divided by the sum found for the category above Now I'm trying to achieve this with a single update query, but can't seem to do it. What I thought I should do is: update Table T set T.ratio = T.appearances / ( select sum(S.appearances) from Table S where S.id = T.id ) But MySQL does not accept the alias T in the update column, and I did not find other ways of achieving this. Any ideas?

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• how to create Cross domain asp.net web service

  - by Prithvi Raj Nandiwal

  i have create a web service. i want to access this web service using Ajax jqury. i am able to access on same domain. but i want to access thia web service to another domain. Have any one idea. how to create cross domain web service in asp.net. any setting in web,config file so that i access it on another domain. my webservice [WebService(Namespace = "http://tempuri.org/")] [System.Web.Script.Services.ScriptService] public class Service : System.Web.Services.WebService { public Service () { } [WebMethod] public string SetName(string name) { return "hello my dear friend " + name; } } JavaScript $.ajax({ type: "GET", url:'http://192.168.1.119/Service/SetName.asmx?name=pr', ContentType: "application/x-www-form-urlencoded", cache: false, dataType: "jsonp", success: onSuccess });

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• How to highlight matching sub-strings inside a ListBox?

  - by Kishore Kumar

  I have one TextBox and one listbox for searching a collection of data. While searching a text inside a Listbox if that matching string is found anywhere in the list it should show in Green color with Bold. eg. I have string collection like "Dependency Property, Custom Property, Normal Property". If I type in the Search Text box "prop" all the Three with "prop" (only the word Prop) should be in Bold and its color should be in green. Any idea how it can be done?. Data inside listbox is represented using DataTemplate.

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• Android: prevent user from coming back to login page after logging in

  - by user522559

  Hi all, I have a login page in my android app. I want to prevent the user after logging in to come back to the login page. Also, when the user reopens the app, if he has logged in before, I want to go directly to the main page without having to go to the login page. What the best way of doing that? One idea I thought of is to save the login parameters in a cookie, and then, when the app is reopens, if the cookie contains some login information, I inflate the main page, otherwise, I inflate the login page. Is this the best way of doing it? Thanks,

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• Sanitize a string from ascii art

  - by Toto

  I need to sanitize article titles when (creative) users try to "attract attention" with some bad "ascii art". Exemples: Buy my product !!!!!!!!!!!!!!!!!!!!!!!! Buy my product !? !? !? !? !? !? Buy my product !!!!!!!!!.......!!!!!!!! Buy my product <----------- Some acceptable solution would be to reduce the repetition of non-alphanum to 2. So I would get: Buy my product !! Buy my product !? !? Buy my product !!..!! Buy my product <-- This solution did not work that well: preg_replace('/(\W{2,})(?=\1+)/', '', $title) Any idea how to do it in PHP with regex? Other better solution is also welcomed (I cannot strip all the non-alphanum characters as they can make sense).

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• What is wrong with this null check for data reader

  - by Phil

  c.Open() r = x.ExecuteReader If Not r("filename").IsDbnull Then imagepath = "<img src='images/'" & getimage(r("filename")) & " border='0' align='absmiddle'" End If c.Close() r.Close() I have also tried; If r("filename") Is DBNull.Value Then imagepath = String.Empty Else imagepath = "<img src='images/'" & getimage(r("filename")) & " border='0' align='absmiddle'" End If c.Close() r.Close() The error is: Invalid attempt to read when no data is present. The idea of my code is to build an img src string only when data is available. Help greatly appreciated. Thanks

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• Declaring pointers; asterisk on the left or right of the space between the type and name?

  - by GenTiradentes

  I've seen mixed versions of this in a lot of code. (This applies to C and C++, by the way.) People seem to declare pointers in one of two ways, and I have no idea which one is correct, of if it even matters. The first way it to put the asterisk adjacent the type name, like so: someType* somePtr; The second way is to put the asterisk adjacent the name of the variable, like so: someType *somePtr; This has been driving me nuts for some time now. Is there any standard way of declaring pointers? Does it even matter how pointers are declared? I've used both declarations before, and I know that the compiler doesn't care which way it is. However, the fact that I've seen pointers declared in two different ways leads me to believe that there's a reason behind it. I'm curious if either method is more readable or logical in some way that I'm missing.

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• Rails + Dragonfly gem: Saving image in a directory structure based on ActiveRecord object attributes

  - by Allen Bargi

  I'm using dragonfly gem to manage images and attachments in my rails app and I need to store images in a specific directory structure based on my user model. let' say I have user model which has a name and each user has many albums, which have a name also, then I want the images to be stored in "#{RAILS_ROOT}/public/system/#{user.name}/#{user.album.name}/#{suffix}" I've managed to changed the root_path in dragon fly and I even overrided relative_storage_path like this: class MyDataStore < Dragonfly::DataStorage::FileDataStore private def relative_storage_path(suffix) "#{suffix}" end end but still, I don't know how I can pass the ActiveRecord object attributes like user.name and user.album.name to relative_storage_path to create my ideal path. do you have any idea how I can do such a thing?

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• Authorization in a more purely OOP style...

  - by noblethrasher

  I've never seen this done but I had an idea of doing authorization in a more purely OO way. For each method that requires authorization we associate a delegate. During initialization of the class we wire up the delegates so that they point to the appropriate method (based on the user's rights). For example: class User { private deleteMemberDelegate deleteMember; public StatusMessage DeleteMember(Member member) { if(deleteMember != null) { deleteMember(member); } } //other methods defined similarly... User(string name, string password) //cstor. { //wire up delegates based on user's rights. //Thus we handle authentication and authorization in the same method. } } This way the client code never has to explictly check whether or not a user is in a role, it just calls the method. Of course each method should return a status message so that we know if and why it failed. Thoughts?

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• What problems do you find with this view on domain-driven design?

  - by Bozho

  I just wrote a long (and messy) blogpost about my view on domain-driven design at present day, with frameworks like spring and hibernate massively in use. I'd ask you to spot any problems with my views on the matter - why this won't work, why it isn't giving the benefits of DDD, why it is not a good idea in general. The blogpost is here (I don't think I need to copy-paste it on SO - if you think I should, tell me). I know the question is subjective, but it is aimed at gathering the most predominant opinions. (I'm tagging Java, since the frameworks discussed are Java frameworks)

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• Changing the image of a scroll bar without flash.

  - by user352527

  How can i change the appearance (not the color) of a scrollbar within a box with overflow? I know how to do it in flash, I need a way to do it without it. In fact, I want to know how they did this slider in the apple web site: http://www.apple.com/mac/ It seems they used css along with javascript, but that's all I know. Is it possible that they did it using DOM, DHTML, HTML 5, Ruby or PHP? I have no idea. If you'd be kind enough to share the answer, I thank you in advance.

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• workflow 4 activity designer IValueConverter

  - by pdiddy

  Lets say i have an activity with InArgument<int> ProductId I'd like to expose in the activity designer a combobox to show all Products and the user can select a product. I can show the list of product in the combo no problem. But how do I bind the selected product to the InArgument<int> of my custom activity? I suppose I need some kind of ValueConverter? Not sure how to code the value converter for this case, if anybody has an idea, suggestion, will be helpful. I have to convert the InArgument<int> to an int? and the convert back from int to InArgument<int> Thanks,

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• Confused with conditional and logical operators - VB.net

  - by AgentRev

  I'm kind of new to VB.net, and since I just finished a C# course, the lack of parentheses creates a lot of confusion on how to write certain combinations of operators. The C# equivalent of the line I am trying to reproduce in VB would be like this : if ( (a == 0 && b != null) || (a == 1 && c != null) ) I'm have no idea how to write this in VB, I've tried many combinations of And, Or, AndAlso, OrElse, etc. but I can't achieve the desired result. I can't find any clear example of C# v.s. VB.net comparison on operators, and the notes I have aren't helpful either. Can someone help me figure this out?

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• Delphi for PHP - location of source

  - by Holgerwa

  I just installed Delphi for PHP to get an idea on how it works and have created a simple app with a button that puts a text into a listbox when it is clicked. The app works if I copy all required files to my webserver and run it from there. It also works if I save the project in the standard path: "c:\documents and settings\username\My Documents\Delphi for PHP Projects" But if I save the project in another directory, the ButtonClick event is not fired when the application runs from there. I've put a breakpoint in the event to see if it stops there but it doesn't. The OnShow event of the form works as usual. It really seems to be the path where the project is located to make it either work or not. As I said, I have no experience with Delphi for PHP so far, it is probably just a simple solution that I don't see...

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• How do you move html from one div to another with Jquery without breaking javascript

  - by KallDrexx

  I have two divs for different sections of my webpage, a working and a reference section. One is fixed size, the other is variable sized and they are vertically stacked. I am trying to design it so that if you want to work on something in the reference pane, you click a link and it swaps all the data between the two panes. My idea was to do the following: var working = $("#working_pane").html(); var ref = $("#reference_pane").html(); $("#working_pane").html(ref); $("#reference_pane").html(working); The problem with this, is it seems that any javascript referenced inside of these panes (for example, in place editors) get broken upon switching. No javascript errors occur, it's just that nothing happens, like the javascript ties are broken. Is there any to move the html without breaking the javascript contained?

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• C# event or delegate or other solution?

  - by user295734

  Looking for some help or programmng ideas or mayeb there is some pattern that would help. Have an application that needs to fire alot of events sequentially, it could up to 100 or more unique events, it will be dynamic depeneding on the situation. Trying to find the best practice for doing this. My main idea right now is to create a list of objects iterate thru them, and fire each event. This seems wrong, or bad practice. Or maybe have one object and pass a list or params into one event? Or am I missing some feature in .NET that i could be using or implementing?

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• Converting convex hull to binary mask

  - by Jonas

  I want to generate a binary mask that has ones for all pixels inside and zeros for all pixels outside a volume. The volume is defined by the convex hull around a set of 3D coordinates (<100; some of the coordinates are inside the volume). I can get the convex hull using CONVHULLN, but how do I convert that into a binary mask? In case there is no good way to go via the convex hull, do you have any other idea how I could create the binary mask?

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• Monotouch/C# version of "stringWithContentsOfUrl"

  - by Pselus

  I'm trying to convert a piece of Objective-C code into C# for use with Monotouch and I have no idea what to use to replace stringWithContentsOfUrl Should I use something like: HttpWebRequest request = (HttpWebRequest) WebRequest.Create("http://www.helephant.com"); HttpWebResponse response = (HttpWebResponse) request.GetResponse(); if (response.StatusCode == HttpStatusCode.OK && response.ContentLength > 0){ TextReader reader = new StreamReader(response.GetResponseStream()); string text = reader.ReadToEnd(); Console.Write(text); } Is that even safe to use in MonoTouch? Will it work for the iPhone?

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