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  • Java Jersey RESTful services

    - by pHk
    Rather new to REST and Jersey, and I'm trying out some basic examples. I've got one particular question though, which I haven't really found an answer for yet (don't really know how to look for this): how would you go about storing/defining common services so that they are stateful and accessible to all/some resources? For instance, a logger instance (Log4J or whatever). Do I have to manually initialize this and store it in the HttpSession? Is there a "best practice" way of doing this so that my logger is accessible to all/some resources? Thanks a lot.

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  • (fluxus) learning curve

    - by Inaimathi
    I'm trying to have some fun with fluxus, but its manual and online docs all seem to assume that the reader is already an expert network programmer who's never heard of Scheme before. Consequently, you get passages that try to explain the very basics of prefix notation, but assume that you know how to pipe sound-card data into the program, or setup and connect to an OSC process. Is there any tutorial out there that goes the opposite way? IE, assumes that you already have a handle on the Lisp/Scheme thing, but need some pointers before you can properly set up sound sources or an OSC server? Barring that, does anyone know how to get (for example) the system microphone to connect to (fluxus), or how to get it to play a sound file from disk?

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  • Testing complex entities

    - by Carlos
    I've got a C# form, with various controls on it. The form controls an ongoing process, and there are many, many aspects that need to be right for the program to run correctly. Each part can be unit tested (for instance, loading some coefficients, drawing some diagnostics) but I often run into problems that are best described with an example: "If I click here, then here, then change this, then re-open the form, then click here, it crashes or produces an error" I've tried my best to use common code organisational ideas (inheritance, DRY, separation of concerns) but there never seems to be a way to test every single path, and inevitably, a form with several controls will have a huge number of ways to execute. What can I read (preferably online) that addresses this kind of issue, and is there a (non-generic) term for it. This isn't a specific problem I'm having, but one that creeps up on me, especially with WinForms.

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  • My Header over External Content

    - by TrivaniJoanne
    I can see this web site is somewhat over my head, but I'm having trouble finding an answer. I want to put my header, with links to other pages, over external content. Here's why: My MLM gives me a replicated web site that they maintain. I want to add links to my blog, contact info, even meta tags to the site. I though I had it done by using an iframe. I have my content at the top, and the MLM site shows up in the iframe. (here is the link www.trivanijoanne.com) The problem is that the iframe doesn't resize when the external content changes, and it is confusing for the user to need to scroll up to see the page. Also, the pdf pages don't load inside the iframe. I looked around online and see that iframes are a thing of the past. What should I be using to accomplish this task?

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  • Dynamic notifications using jQuery

    - by sparkymark75
    I'm currently building a homepage for our staff which is to be set as the homepage in their browser. I'm currently building the facility whereby nominated members of staff can send notifications to all staff. These will popup on their home page without the need for them to refresh the page. I've currently got the code below which worked fine for 1 notification, but there may be more than 1 at a time waiting to be shown. I've switched to outputting json but I'm not sure how to modify my code to consume it. I'm using the PeriodicalUpdater and jGrowl plugins to get this functionality, if there's better alternatives then feel free to sugget them. $.PeriodicalUpdater({ url: 'getNotifications.aspx', maxTimeout: 6000, type: 'json' }, function(data) { var message = data; if (message != '') { $.jGrowl(message, { sticky: true }); } }); As an additional piece of functionality, would it be possible to store in a cookie when a user has closed a notification so they don't see it again? Thanks.

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  • where do I submit the ipad apps?

    - by Mike
    I read Apple is allowing developers to submit iPad apps for the great opening of the ipad store, but I cannot find anything in my account that says that or allows sending the apps. Another thing is: in order for an app to be accepted you have to sign it with your own certificate but to do that you have to select the device on Xcode. As far as I know, Xcode do not signs with certificates applications that run on the simulator. Beyond that, any try to build a distribution package on Xcode shows messages like "you should disable armv6", and others. So, I ask. Is this news true? If yes, how to I manage to have the app ready for iPad and ready for submission? thanks.

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  • Is it possible to use objects as function paremeters in EL with JBoss EL resolver?

    - by calavera.info
    There is this sentence in JBoss EL resolver online documentation: It's important to fully understand how this extension to EL works. When the page is rendered, the parameter names are stored (for example, hotel.id and user.username), and evaluated (as value expressions) when the page is submitted. You can't pass objects as parameters! But I had used objects as function parameters in my project before I accidentally read this hint and it worked! How is it possible? I'm afraid of that there is some magic now...

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  • Manipulating pixels using only toDataURL

    - by Chris
    The problem I have is this: I need to be able to dynamically tint an image using Javascript, but I cannot access pixel data via the canvas. I can, however, store the dataURL (or any other text-based data format) and include that with the code, manipulate that data, and then create an image object using that dataURL. My question is, how can I access the RGBA value of each pixel, given only the dataURL. I assume I need to decode the base64 url, but into what format in order to manipulate on the pixel level? And then would be it be as trivial as re-encoding it as base64, slapping it in a url, and the passing to an image? Thanks.

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  • Lose changed data in session

    - by user150528
    Our asp.net 2.0 application has a very long process (synchronized) before sending response back to client. I observed that a second request, exactly same the initial one, was sent after client IE8 waited response for a long period of time while our application was still processing the first request. I use page session with predefined key to store a flag when the initial request arrives and then starts long process while client IE waits for the response, so if second request comes in, our application checks the session value. After our application sets the session flag and starts processing, I use Fiddler “Abort Session” to abort the initial request, right away the second request (same as the first one) is sent automatically, but session value set earlier seems no longer exist. Any thoughts?

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  • Help with MVC controller: passing a string from view to controller

    - by 109221793
    Hi guys, I'm having trouble with one particular issue, I was hoping someone could help me out. I've completed the MVC Music Store tutorial, and now I'm trying to add some administrator functionality - practice as I will have to do this in an MVC application in my job. The application is using the aspnet membership api, and what I have done so far is created a view to list the users. What I want to be able to do, is click on the users name in order to change their password. To try and carry the username to the changeUserPassword controller (custom made). I registered a new route in the global.asax.cs file in order to display the username in the URL, which is working so far. UserList View <%: Html.RouteLink(user.UserName, "AdminPassword", new { controller="StoreManager", action="changeUserPassword", username = user.UserName }) %> Global.asax.cs routes.MapRoute( "AdminPassword", //Route name "{controller}/{action}/{username}", //URL with parameters new { controller = "StoreManager", action = "changeUserPassword", username = UrlParameter.Optional} ); So now the URL looks like this when I reach the changeUserPassword view: http://localhost:51236/StoreManager/changeUserPassword/Administrator Here is the GET changeUserPassword action: public ActionResult changeUserPassword(string username) { ViewData["username"] = username; return View(); } I wanted to store the username in ViewData as I would like to use it in the GET changeUserPassword for display purposes, and also as a hidden value in the form. This is in order to pass it through to enable me to reset the password. Having debugged through the code, it seems that 'username' is null. How can I get this to work so that the username carries over from the Html.RouteLink, to the changeUserPassword action? Any help would be appreciated :) Here is my complete code: UserList.aspx <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<System.Web.Security.MembershipUserCollection>" %> <asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server"> UserList </asp:Content> <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server"> <h2>UserList</h2> <table> <tr> <th>User Name</th> <th>Last Activity date</th> <th>Locked Out</th> </tr> <%foreach (MembershipUser user in Model){ %> <tr> <td><%: Html.RouteLink(user.UserName, "AdminPassword", new { controller="StoreManager", action="changeUserPassword", username = user.UserName }) %></td> <td><%: user.LastActivityDate %></td> <td><%: user.IsLockedOut %></td> </tr> <% }%> </table> </asp:Content> changeUserPassword.aspx <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<musicStoreMVC.ViewModels.ResetPasswordAdmin>" %> <asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server"> changeUserPassword </asp:Content> <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server"> <h2>Change Password: <%: ViewData["username"] %></h2> <% using (Html.BeginForm()) {%> <%: Html.ValidationSummary(true) %> <fieldset> <legend>Fields</legend> <div class="editor-label"> <%: Html.Hidden("username",ViewData["username"]) %> <%: Html.LabelFor(model => model.password) %> </div> <div class="editor-field"> <%: Html.TextBoxFor(model => model.password) %> <%: Html.ValidationMessageFor(model => model.password) %> </div> <div class="editor-label"> <%: Html.LabelFor(model => model.confirmPassword) %> </div> <div class="editor-field"> <%: Html.TextBoxFor(model => model.confirmPassword) %> <%: Html.ValidationMessageFor(model => model.confirmPassword) %> </div> <p> <input type="submit" value="Create" /> </p> </fieldset> <% } %> <div> <%: Html.ActionLink("Back to List", "Index") %> </div> </asp:Content> My actions public ActionResult UserList() { var users = Membership.GetAllUsers(); return View(users); } public ActionResult changeUserPassword(string username) { ViewData["username"] = username; return View(); }

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  • Pros and cons of ways of storing an unsigned int without an unsigned int data type

    - by fields
    I have values that are 64-bit unsigned ints, and I need to store them in mongodb, which has no unsigned int type. I see three main possibilities for storing them in other field types, and converting on going in and out: Using a signed int is probably easiest and most space efficient, but has the disadvantage that they're not human readable and if someone forgets to do the conversion, some of them will work, which may obscure errors. Raw binary is probably most difficult for inexperienced programmers to deal with, and also suffers from non-human-readability. A string representation is the least space efficient (~40 bytes in unicode vs 8 bytes per field), but then at least all of the possible values will map properly, and for querying only a conversion to string is required instead of a more complicated conversion. I need these values to be available from different platforms, so a single driver-specific solution isn't an option. Any major pros and cons I've missed? Which one would you use?

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  • Data from array to sql

    - by espentf
    I'm making a webshop for a school asignment and therfore i needed to make a shopping cart. In the shopping cart the data is storred in an array. The code for when I echo it out is <tr> <td><?php echo $row['Navn'];?></td> <td><input type="text" name="antall-<?php echo $row['id_produkt'];?>" size="5" value=" <?php echo $_SESSION['handlekurv'][$row['id_produkt']]['antall'];?>" /> </td> <td><?php echo $row['Pris'];?></td> <td><?php echo $_SESSION['handlekurv'][$row['id_produkt']]['antall']*$row['Pris'];?></td></tr> What i want is the store the data this code echoes out from the array, in a sql database. Is there anyone who can help me whith this problem?

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  • Math for a geodesic sphere

    - by Marcelo Cantos
    I'm trying to create a very specific geodesic tessellation, but I can't find anything online about it. It is normal to subdivide the triangles of an icosahedron into triangle patches and project them onto the sphere. However, I noticed an animated GIF on the Wikipedia entry for Geodesic Domes that appears not to follow this scheme. Geodesic spheres generally comprise a mixture of mostly hexagonal triangle patches, with pentagonal patches forming at the vertices of the original icosahedron; in most cases, these pentagons are linked together; that is, following a straight edge from the center of one pentagon leads to the center of another pentagon. In the Wikipedia animation, however, the edge from the center of one pentagon doesn't appear to intersect the center of an adjacent pentagons; instead it intersects the side of the other pentagon. Hopefully the drawing below makes this clear: Where can I go to learn about the math behind this particular geometry? Ideally, I'd like to know of an algorithm for generating such tessellations.

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  • Do Blob properties on entities affect query performance?

    - by Jaroslav Záruba
    Hello I'm trying to make my mind on whether to store a binary representation of an entity as its Blob property, or whether I better keep the blobs in some separate 'wrapping' class. Possible impact on memory heap and/or a query execution time are my concerns in the first case, complexity votes against the other one. I know Blobs are not indexed, i.e. index size is not what I'm worrying about. Also I assume for blobs Datastore puts defaultFetchGroup to false, but does it mean that blobs don't make a difference in queries? Regards J. Záruba

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  • How do I find hash value of a 3D vector ?

    - by brainydexter
    I am trying to perform broad-phase collision detection with a fixed-grid size approach. Thus, for each entity's position: (x,y,z) (each of type float), I need to find which cell does the entity lie in. I then intend to store all the cells in a hash-table and then iterate through to report (if any) collisions. So, here is what I am doing: Grid-cell's position: (int type) (Gx, Gy, Gz) = (x / M, y / M, z / M) where M is the size of the grid. Once, I have a cell, I'd like to add it to a hash-table with its key being a unique hash based on (Gx, Gy, Gz) and the value being the cell itself. Now, I cannot think of a good hash function and I need some help with that. Can someone please suggest me a good hash function? Thanks

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  • in-memory database in Python

    - by Claudiu
    I'm doing some queries in Python on a large database to get some stats out of the database. I want these stats to be in-memory so other programs can use them without going to a database. I was thinking of how to structure them, and after trying to set up some complicated nested dictionaries, I realized that a good representation would be an SQL table. I don't want to store the data back into the persistent database, though. Are there any in-memory implementations of an SQL database that supports querying the data with SQL syntax?

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  • Script to download file and rename according to date on Windows Vista machine?

    - by Dave
    Hi, I need to daily run a script that will download a file from a fixed location and save it on my computer with an appropriate filename-YYYYMMDD-HHSS.ext timestamp. I need a historical record of what that file was at that particular time. I can manually check and see what the changes were, so compairson not needed. (I was looking for an online service that would do this for me, but I think a locally running script on my machine would be good enough). Although i do have php on my machine, i would prefer if its a pure windows builtin solution, just in case i have to (likely) adapt it to someone else's system (non-techies). If someone has something like this and can contribute the code - help would be most appreciated!! D

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  • Entity-attribute-value model using codeigniter / php

    - by John Stewart
    SO I am trying to create a way to structure my database to be able customize forms. I looked into EAV pattern and here is my db structure: Table form - form_id - form_name - form_added_on - form_modified_at Table: form_fields - field_id - form_id - field_type (TEXT, RADIO etc..) - field_default_value - field_required Table: form_data - data_id - field_id - form_id - field_value so now I can store any custom form into the database and if I want to get the values for an individual form I can simply join it by "form_id" .. the problem: I want to be able to search through all the forms for a specific field value. How can I do that with EAV model? Also, I thought about just storing the custom data as a serialized (JSON) object but then I am not sure how can I query that data. Please note that I am using Codeigniter with MYSQL. So if conversation can use Codeigniter libraries if needed.

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  • What challenges are there in making an iPhone IDE for Windows/Linux?

    - by Moshe
    First of all, is this possible? If so: What challenges would I encounter in making an XCode imitation for iPhone/iPod development for Windows or Linux? I was thinking about using gcc as the actual compiler for the objecitve-c. Will that work? It doesn't need to compile to iPhone OS until it is to be tested on the device or submitted to the app store. Perhaps it will be easier to compile to the local OS format (Windows or Linux) until "prime-time".

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  • jquery tabs with form help

    - by sico87
    Hello, I am implementing jQuery tabs on mysite, one of the tabs holds a form and this is my problem, the form is loaded in via ajax as it is used multiple time throughout the site. My issue is that when the form is submitted the page leaves the tabbed area, whereas I need to stay within the tabbed system. Below is the code I am using TABS HTML <div id="tabs"> <ul> <li><a href="#tabs-1">Active Categories</a></li> <li><a href="#tabs-2">De-activated Categories</a></li> <li><a href="<?=base_url();?>admin/addCategory">Add A New Category</a></li> </ul> FORM MARKUP <div id="contact_form"> <?php // open the form echo form_open(base_url().'admin/addCategory'); // categoryTitle echo form_label('Category Name', 'categoryTitle'); echo form_error('categoryTitle'); $data = array( 'name' => 'categoryTitle', 'id' => 'categoryTitle', 'value' => $categoryTitle, ); echo form_input($data); // categoryAbstract $data = array( 'name' => 'categoryAbstract', 'id' => 'categoryAbstract wysiwyg', 'value' => $categoryAbstract, ); echo form_label('Category Abstract', 'categoryAbstract'); echo form_error('categoryAbstract'); echo form_textarea($data); // categorySlug $data = array( 'name' => 'categorySlug', 'id' => 'categorySlug', 'value' => $categorySlug, ); echo form_label('Category Slug', 'categorySlug'); echo form_error('categorySlug'); echo form_input($data); // categoryIsSpecial /*$data = array( 'name' => 'categoryIsSpecial', 'id' => 'categoryIsSpecial', 'value' => '1', 'checked' => $checkedSpecial, ); echo form_label('Is Category Special?', 'categoryIsSpecial'); echo form_error('categoryIsSpecial'); echo form_checkbox($data);*/ // categoryOnline $data = array( 'name' => 'categoryOnline', 'id' => 'categoryOnline', 'value' => '1', 'checked' => $checkedOnline, ); echo form_label('Online?', 'categoryOnline'); echo form_checkbox($data); echo form_error('categoryOnline'); //hidden field check if we are adding or editing echo form_hidden('edit', $edit); echo form_hidden('categoryId', $categoryId); // categorySubmit $data = array('class' => 'submit', 'id' => 'submit', 'value'=>'Submit', 'name' => 'categorySubmit'); echo form_submit($data); echo form_close(); ?> </div> FORM PROCESS function saveCategory() { $data = array(); // we need to set the what element the form errors get displayed in $this->form_validation->set_error_delimiters('<div class="formError">', '</div>'); // we need to estabilsh some rules so the form can be submitted without error, // or if there is error then the form needs show errors. $config = array( array( 'field' => 'categoryTitle', 'label' => 'Category title', 'rules' => 'required|trim|max_length[25]|xss_clean' ), array( 'field' => 'categoryAbstract', 'label' => 'Category abstract', 'rules' => 'required|trim|max_length[150]|xss_clean' ), array( 'field' => 'categorySlug', 'label' => 'Category slug', 'rules' => 'required|trim|alpha|max_length[25]|xss_clean' ), /*array( 'field' => 'categoryIsSpecial', 'label' => 'Special category', 'rules' => 'trim|xss_clean' ),*/ array( 'field' => 'categoryOnline', 'label' => 'Category online', 'rules' => 'trim|xss_clean' ) ); $this->form_validation->set_rules($config); // with the validation rules set we can no run the validation rules over the form // if any the validation returns false then the error messages will be returned to the view // in the delimiters that we set further up the page. if($this->form_validation->run() == FALSE) { // we should reload the form $this->load->view('admin/add_category'); } }

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  • Return a dynamic string from std::exception's `what`

    - by Shtééf
    I'm convinced at this point that I should be creating subclasses of std::exception for all my exception throwing needs. Now I'm looking at how to override the what method. The situation that I'm facing, it would be really handy if the string what returns be dynamic. Some pieces of code parse an XML file for example, and adding a position or line number to the error message is useful to me. What I'd like to know: what returns a const char *, which implies any catcher is likely not going to free the string. So I need some other place to store the result, but where would that be? (I need thread-safety.) what also includes throw() in its signature. While I can prevent my what from throwing anything, it seems to me that this method really isn't intended for anything too dynamic. If what is not the right place, then where should I be doing this instead?

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  • jQuery Hide/Show with select element

    - by ozzygmz
    I need to show and hide with the select element some divs. So far I have the HTML and I've tried many jQuery snippets online but none seemed to work. I need help please. HTML <div class="adwizard"> <select id="selectdrop" name="selectdrop" class="adwizard-bullet"> <option value="">AdWizard</option> <option value="">Collateral Ordering Tool</option> <option value="">eBrochures</option> <option value="">Brand Center</option> <option value="">FunTees</option> </select> </div>

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  • Passing hash as values in hidden_field_tag

    - by funkymunky
    I am trying to pass some filters in my params through a form like so: hidden_field_tag "filters", params[:filters] For some reason the params get changed in the next page. For example, if params[:filters] used to be... "filters"={"name_like_any"=["apple"]} [1] ...it gets changed to... "filters"="{\"name_like_any\"=[\"apple\"]}" [2] note the extra quotations and backslashes in [2] when compared to [1]. Any ideas? I'm attempting to use this with searchlogic for some filtering, but I need it to persist when I change change objects in forms. I would prefer not to have to store it in session.

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  • Can i lock a record from a join sql statment using ROWLOCK,UPDLOCK ?

    - by Andrea.Ko
    I have a store procedure to get the data i want: SELECT a.SONum, a.Seq1, a.SptNum, a.Qty1, a.SalUniPriP, a.PayNum, a.InvNum, a.BLNum, c.ETD, c.ShpNum, f.IssBan FROM OrdD a JOIN OrdH b ON a.SONum = b.SONum LEFT JOIN Invh c ON a.InvNum = c.InvNum LEFT JOIN cus d ON b.CusCod = d.CusCod LEFT JOIN BL e ON a.BLNum = e.BLNum LEFT JOIN PayMasH f ON f.PayNum = a.PayNum LEFT JOIN Shipment g ON g.ShpNum = c.ShpNum WHERE b.CusCod IN (SELECT CusCod FROM UsrInc WHERE UseID=@UserID and UseLev=@UserLvl) AND d.CusGrp = @CusGrp After i get those records into cursor, i used RowLock, UpdLock to lock all the related invoice number. SELECT InvNum FROM Invh WITH (ROWLOCK,UPDLOCK) WHERE InvNum = Can i issue locking on the table INVH at the point i select the table from a few table using join command? Any advice, please!

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  • Best way to encrypt certain fiels in SQL Server 2008?

    - by Josh
    I'm writing a .net web app that will read and write information to a SQL 2008 backend database. Some of this information will be highly confidential in nature so I want to encrypt certain data elements. I dont want to use TDE or any full-database encryption for performance reasons. My main concern is protecting this sensitive data as a last resort against a SQL injection or even a database server compromise. My question is what is the best way to do this to preserve performance? Is it faster to use the SQL2008 encryption functions such as EncryptByKey, or would it be faster to encrypt and decrypt the data in the .NET web app itself using a symmetric key stored in the secure web.config and store the encrypted values in the DB?

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