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• Application development using google applications?

  - by Ali

  Hi guys I'm developing a collaboration system and our team has been at it for the past couple of years. However the boss suggested that we try and redevelop it using something robust. Basically our collaboration system incorporates a webmail client and a custom built contacts management system plus project management system. My boss likes the robustness of GMAIL and Google docs and really would like a solution that if possible could incorporate these two and other google applications - I'm not so sure how to get started on developing a custom application using google applications - especially consider the fact that in the long run we wish to host our collaboration system as a paid service - just like the services that 37signals basecamp and highrise have been.

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• chat application: pubsubhubbub vs xmpp

  - by sofia

  I'm unsure on the best stack to build a chat application. Currently I'm thinking of two main options: facebook tornado cons: does not use the main chat protocol xmpp but pubsubhubbub pros: i really like its simplicity for development (webserver + webframework); pubsubhubbub also seems simpler as a protocol than xmpp; and i know python xmpp + bosch, punjab, ejabberd cons: don't know erlang; overall seems a bit harder to develop pros: uses xmpp protocol The chat app will need to have the following: Private messages Public rooms Private rooms Chat history for rooms (not forever, just the last n messages) html embedding url to chat room Both options seem scalable so that's not really my worry (we're thinking of running the app in amazon's ec2 as well). I know there's a project that builds a xmpp server using tornado but it's not ready for production use and our deadline isn't that big. Basically my main worry is ease of development vs somehow regretting later using pubsubhubbub to develop a chat app but I read somewhere that PubSubHubbub might eventually replace XMPP as REST replaced SOAP - so what do you think?

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• Authenticating from a "child" application via CAS

  - by Rob Wilkerson

  I have a portal application that loads external content (widgets) via an iframe. Users login to CAS via the portal itself. There are a few portal APIs, though, that need to be called from that external content. What information do I have to pass from the portal to the widgets that the widgets can use to make these calls without being rejected by CAS? UPDATE The more I investigate, the more I think that my question boils down to how CAS actually does what it's supposed to do. In other words, how can I go from one site where I've authenticated to another and tell it that I've already done the authentication thing. What's the mechanism behind that and how can I employ in in a web context.

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• HTTP Error 500.19 - Internal Server Error for silverlight application

  - by KentZhou

  Use VS2010 silverlight business application template to createa defaut solution. Change authentication to Windows in Web.config and the code in app.xaml.cs to use windows authentication. Nothing else changed. Then run this app from vs2010 built-in web server, it is fine, I can see the login user info from windws(from a AD domain account) display on the top-right of the screen, like DomainName\userName. Then deploy this web app to IIS on windows 7(same computer) and access this app again, I got following error: HTTP Error 500.19 - Internal Server Error The requested page cannot be accessed because the related configuration data for the page is invalid. Detailed Error InformationModule IIS Web Core Notification Unknown Handler Not yet determined Error Code 0x80070005 Config Error Cannot read configuration file due to insufficient permissions Config File \\?\C:\Users\myname\Documents\Visual Studio 2010\Projects\BusinessApplication4\BusinessApplication4.Web\web.config Requested URL http://localhost:77/BusinessApplication4TestPage.html Physical Path Logon Method Not yet determined Logon User Not yet determined Config Source -1: 0: how to resolve this problem?

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• moviePlayBackDidFinish: is not called in application.

  - by srikanth rongali

  In my application I have used these notifications when playing a video. But, The problem is the control of the program is not entering in to the first two methods(moviePreLoadDidFinish and moviePlayBackDidFinish). It is entering into last method. So, after the video is played and I pressed Done button in the video, I cannot touch any object in screen. I mean I used play button for video to play in a view. After the video played the play button is deactivated. - (void) moviePreloadDidFinish:(NSNotification*)notification { } // Notification called when the movie finished playing. - (void) moviePlayBackDidFinish:(NSNotification*)notification { } // Notification called when the movie scaling mode has changed. - (void) movieScalingModeDidChange:(NSNotification*)notification { } I could not get where I was wrong ? Thank You.

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• How can I create a hybrid Silverlight and aspx application

  - by PilotBob

  Here is my scenerio.. We have an ASP.Net 2.x web site. We want to migrate it to Silverlight full frame application. However, there is no way we can go away in a corner and redo every web page in SL right off the bat. What I would like to do is build the chrome of the app (main page, dashboard, login, common system/config screens, main menu) in SL and be able to open existing .aspx pages in the main content SL frame. From what I see there is no way to do this. I thought the Webbrowser control in SL4 would be the answer, but apparently that only works if your app is run out of browser. So, what is my best recourse? It seems like I will have to create some type of .aspx page that hosts the .XAP and pass in the page I want it to load? How would you gurus approach this?

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• Updating Lucene index from two different threads in a web application

  - by Jimmy

  Hi, I've a .net web application which uses Lucene.net for company search functionality. When registered users add a new company,it is saved to database and also gets indexed in Lucene based company search index in real time. When adding company in Lucene index, how do I handle use case of two or more logged-in users posting a new company at the same time?Also, will both these companies get indexed without any file lock, lock time out, etc. related issues? Would appreciate if i could help with code as well. Thanks.

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• Database per application VS One big database for all applications

  - by Jorge Vargas

  Hello, I'm designing a few applications that will share 2 or 3 database tables and all of the other tables will be independent of each app. The shared databases contain mostly user information, and there might occur the case where other tables need to be shared, but that's my instinct speaking. I'm leaning over the one database for all applications solution because I want to have referential integrity, and I won't have to keep the same information up to date in each of the databases, but I'm probably going to end with a database of 100+ tables where only groups of ten tables will have related information. The database per application approach helps me keep everything more organized, but I don't know a way to keep the related tables in all databases up to date. So, the basic question is: which of both approaches do you recommend? Thanks, Jorge Vargas.

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• False Duplicate Key Error in Entity Framework Application

  - by ProfK

  I have an ASP.NET application using an entity framework model. In an import routine, with the code below, I get a "Cannot insert duplicate key" exception for AccountNum on the SaveChanges call, but when execution stops for the exception, I can query the database for the apparently duplicated field, and no prior record exists. using (var ents = new PvmmsEntities()) { foreach (DataRow row in importedResources.Rows) { var empCode = row["EmployeeCode"].ToString(); try { var resource = ents.ActivationResources.FirstOrDefault(rs => rs.EmployeeCode == empCode); if (resource == null) { resource = new ActivationResources(); resource.EmployeeCode = empCode; ents.AddToActivationResources(resource); } resource.AccountNum = row["AccountNum"].ToString(); ents.SaveChanges(true); } catch(Exception ex) { } } }

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• How to test localized winforms application?

  - by Sun

  Background: I have created sample windows application for learning to implement localization. My each form has two RESX file. One for Bulgaria and one for French(Belgium). It has default culture English(XX) To test locally currently I am programmatically changing UICulture i.e. Thread.CurrentThread.CurrentUICulture = new CultureInfo("fr-BE"); And it works fine. Problem: How can I test without forcing the UI Culture programatically? I have tried changing Control Panel Regional Options Standard and Formats to French(Belgium). That made changes to DatePickerControl and now it display the dates French. However I can still see the Button text in English, where as if I test by injecting CultureInfo programmatically it changes to french. If I am able to change the standard and formats to French do I still need to Install Multilingual User Interface Pack (MUI)?

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• Seed data for grails application

  - by bsreekanth

  Hello, What is the best way to load seed (initial or test) data into grails application. I'm considering 3 options 1. Putting everything in *BootStrap.groovy files. This is tedious if the domain classes and test data are many. 2. Write custom functionality to load it through xml. May not be too difficult with the excellent xml support by groovy, but lot of switch statements for different domain classes. 3. Use Liquibase LoadData api. I see you can load the data fairly easy from csv files. Choice 3 seems the easiest. But, I'm not familiar with Liquibase. Is it good in this scenario, or only used for migration, db changes etc. If anyone could provide a better sol, or point to an example with Liquibase, it would be great help.. thanks...

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• Windows 7 - "A disk read error occured. Press Ctrl + Alt + Del to restart"

  - by Senthil

  Problem: When I switch on my PC, after BIOS POST, a cursor is blinking for about 5 seconds and then I am getting this error message: A disk read error occurred. Press Ctrl + Alt + Del to restart. I am able to go into BIOS. But Windows loader doesn't even start. This message is shown after my motherboard logo comes and goes. Symptoms: I DID notice my system freezing for minutes at a time for past two days. Also, in the past two days, it stopped half way through the Window booting process. I had to do hard reset couple of times to get it working. But since today morning, I only get this error message. Configuration: Operating System: Windows 7 Ultimate 32-bit only. Hard disk: 1 Physical Disk - 80GB SATA Partitions: Two (2) - C: and D: File System: NTFS No drive encryption or compression is turned on. After I searched on the net, I have found people mentioning these possible causes: Hard Disk is physically failing Corrupt MBR Bad Sector I am planning to buy a new hard disk, install Windows on it and continue. But I need data from the old hard disk. The data I want is in D: drive, outside any Windows user folder, is not encrypted or compressed or protected in anyway. I think if someone/something can get the disk working again and knows NTFS, the data can be hopefully read. What steps should I follow to recover files from the defective disk? Update: I bought a new disk, installed windows on it and added the defective one as a slave. Then I was able to read the data from the defective hard disk. Though chkdsk found lots of errors, the files I wanted were not affected and I got them back :) I am not using that hard disk anymore though it seems to be working at the moment.

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• Facebook Connect cross-domain receiver URL (XXXXXXX) must have the application's Connect URL as pref

  - by pallab

  I am trying to create a javascript widget which can be placed on any webpage and uses facebook connect to authenticate the user. What I have done is that,in any html file you put a javascript which has a document.write to show the widget. <script type="text/javascript" src="button.js"></script> On clicking the widget, the facecook login happens if the user is not already logged in to facebook (Single Sign On). There are no problems when I am putting the HTML file and the js file in the same directory as specified in the facebook connect URL. However, when I put the HTML file in some other folder and specify the absolute path to the js folder I get the warning "Facebook Connect cross-domain receiver URL (XXXXXXX) must have the application's Connect URL as prefix" The login however happens? How can this be resolved?

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• Introducing Ajax support in a MyFaces (JSF) + Tomahawk application

  - by Abel Morelos

  Hi, we have a project we we are using MyFaces + Tomahawk, recently I have been requested to provide enhancements to many of the existing screens by using AJAX and provide functionality such as partial refresh. As I see, Tomahawk's components don't have special support for Ajax, so it may be a lot of work to hack Tomahawk in order to use Ajax. Now, I have seen that there are other frameworks such as Trinidad, ajax4jsf, RichFaces, etc. I'm specially interested in Trinidad since it is also a MyFaces project and it has built-in Ajax support, but I'm not still convinced about Trinidad since the other frameworks also have very promising features. Considering that I have a MyFaces+Tomahawk application, what move would you suggest to take in order to introduce Ajax support? Hack with Tomahawk or directly with JSF/MyFaces? Use Trinidad? Use/Add a different framework? Thanks.

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• What causes "A disk read error occurred, Press Ctrl + Alt + Del to restart"?

  - by Mehrdad

  I have a virtual machine containing Windows XP SP3. When I resized the VHD file (and the embedded partition), and tried booting, I got: A disk read error occurred Press Ctrl + Alt + Del to restart Some notes: FixBoot and FixMBR don't help. ChkDsk doesn't help. The partition is indeed active. The partition starts at sector 63 (it also did so before the problem) of cylinder 1, head 1, and is marked as type 0x07 (NTFS) My host OS reads the VHD and the partition completely fine I'm interested in knowing the cause rather than the fix. So "re-format the disk", "reinstall Windows", etc. aren't valid solutions. It's a virtual machine after all... I have nothing to lose, so I don't care about fixing it. I just want to know what's causing this problem, in case I run into it again on a physical machine (which I have done before). More info: The layout of the original, dynamic VHD (which works correctly): +-----------------------------------------------------------------------------+ ¦ Disk: 3 MBR/GPT: MBR ¦ ¦ Size: 127.00GB CHS: 16578 255 63 ¦ ¦ Sectors: 266338304 Disk Signature: 0xEE3EEE3E ¦ ¦ Partitions: 1 Partition Order: 1 ¦ ¦ Media Type: Fixed Interface: SCSI ¦ ¦ Description: Msft Virtual Disk ¦ +-----------------------------------------------------------------------------¦ ¦Pos Idx Type/Name Size Boot Hide Start Sector Total Sectors DL Vol Label ¦ +--- --- --------- ---- ---- ---- -------------- -------------- -- -----------¦ ¦ 1 1 07-NTFS 1.5G Yes No 63 3,148,677 F: <None> ¦ +-----------------------------------------------------------------------------+ The layout of the resized, fixed-size VHD (which doesn't work): +-----------------------------------------------------------------------------+ ¦ Disk: 3 MBR/GPT: MBR ¦ ¦ Size: 1.50GB CHS: 196 255 63 ¦ ¦ Sectors: 3149824 Disk Signature: 0xEE3EEE3E ¦ ¦ Partitions: 1 Partition Order: 1 ¦ ¦ Media Type: Fixed Interface: SCSI ¦ ¦ Description: Msft Virtual Disk ¦ +-----------------------------------------------------------------------------¦ ¦Pos Idx Type/Name Size Boot Hide Start Sector Total Sectors DL Vol Label ¦ +--- --- --------- ---- ---- ---- -------------- -------------- -- -----------¦ ¦ 1 1 07-NTFS 1.5G Yes No 63 3,148,677 F: <None> ¦ +-----------------------------------------------------------------------------+

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• Python script to get the datas from the flex application

  - by nimmyliji

  Hi, I am making a simple Python CGI script that collects data(in xml format) from a flex application and I want to insert it into the mysql database . In perl The script is looks like the following... my @samplexml=$cgi-param("Items"); my $data=$xml-XMLin("@samplexml"); foreach my $e(@{$data-{Group}}) { my $sample="Insert into details(title,Parent,Istreeitem) Values('$e-{title}','$e-{Parent}','$e-{IsTreeItem}')"; my $sam=$dbo-prepare($sample); $sam-execute(); } But I want to know how to write these codes in pytrhon script.... Any one can help me? Thanks in advance. Nimmy.

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• Adsense in a ajax based application?

  - by prashant_sp

  How do I add adsense or other ads in a asp.net ajax/ajax based application ? (ex. ra-ajax samples page) or GWT Is creating an iframe a viable solution? As stated below, placing adsense script is easy. But the google bot wont be able to scan my ajax based page, as all of the content is javascript. There wont be contextual ads. So wont be able to monetize. It would be great for static ads. Any idea/inputs?

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• Problems upgrading MySQL application from Delphi 2006 to 2010

  - by WombaT

  I upgraded my Delphi to 2010 version and I tried to open and run application written in Delphi 2006. The app is using mysql by dbexpress with libmysql.dll and a second driver found somewhere on the Internet. I can't run it on 2010. I'm always getting "missing libmysql.dll library". I tried to get new version of it but it didn't help. Copying this library into almost all system directories didn't help. I'm out of any ideas what to do, how do I connect to database :(

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• Interview question: Develop an application that can display trail period expires after 30 days witho

  - by Algorist

  Hi, I saw this question in a forum about how an application can be developed that can keep track of the installation date and show trail period expired after 30 days of usage. The only constraint is not to use the external storage of any kind. Question: How to achieve this? Thanks Bala --Edit I think its easy to figure out the place to insert a question work. Anyway, I will write the question clearly. "external storage" means don't use any kind of storage like file, registry, network or anything. You only have your program.

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• Web framework for an application utilizing existing database?

  - by tputkonen

  A legacy web application written using PHP and utilizing MySql database needs to be rewritten completely. However, the existing database structure must not be changed at all. I'm looking for suggestions on which framework would be most suitable for this task? Language candidates are Python, PHP, Ruby and Java. According to many sources it might be challenging to utilize rails effectively with existing database. Also I have not found a way to automatically generate models out of the database. With Django it's very easy to generate models automatically. However I'd appreciate first hand experience on its suitability to work with legacy DBs. Also I appreciate suggestions of other frameworks worth considering.

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• Asyncronously receiving data in an ASP.NET MVC application

  - by Mitciv

  I'm looking for the best way to constantly check if data has been sent to our ASP.NET MVC application from a server. I would like to asynchronously check for data and update the view when data has been read. I'm currently using a TcpClient to make a connection, and making the connection in the inherited custom base controller. Currently though I have to refresh the page for the updating of the view to take place. Would there be a proper AJAX solution? or do I need to move the connection to the ActionMethod?

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• Creating <li> with JavaScript in an XUL Application

  - by echox

  Hi! I try to create some li elements in my XUL Application. Theres only the text of the elements shown, but no list typical bullets and linebreaks. Example: text text text text text text text Heres the JS Code I use to create the list: var li = document.createElement('html:li'); var txt = document.createTextNode("only shown as simple text"); li.appendChild(txt); document.getElementById('someList').appendChild(li); HTML: <html:ul id="someList"> <html:li>this is shown in correct list style</html:li> </html:ul> I tried 'html:li' and also 'li' but nothing worked. Any suggestions?

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• Building Visual studio like application, need inputs..

  - by akjoshi

  Hi, I am working on a Visual studio like application i.e. hava a tolbox, an editor and property grid similar to VS. ser can drag and drop the controls(custom and third party) to the editor window and perform operations like resize, move, align, group etc.; Properties of that control needs to be displayed in property grid and user can update them from there. As per my current understanding I will have to extend the Canvas to create my own editor and and Interface for controls which it supports; Each supported control will have to implemnt this interface so that it can be placed in our editor. Something similar to this - http://www.codeproject.com/KB/WPF/WPFDiagramDesigner_Part4.aspx Looking forward for any kind of help, comment or links.

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• Security for ASP.NET application running on intranet / VPN

  - by Ryan

  Hi, I have an ASP.NET app that sits on our intranet, using the WindowsIdentity to identify the user: WindowsIdentity wi = HttpContext.Current.User.Identity as WindowsIdentity; if (wi == null || wi.Name == null) { noAccess("No WindowsIdentity"); return; } string username = wi.Name; if (username.Contains("\\")) username = username.Substring(username.LastIndexOf("\\") + 1); This works fine on our Intranet. However, when users from other offices (separate network, with firewall open) they get a password request input box. Why are they getting the password dialogue? What is the recommended way identify users of the app? I want to avoid using password, but windows identities. Anyone attempting to access the application is inside a trusted network. Thanks a lot for any help Ryan

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• Disabling Submit Button in ASP.NET 3.5 Application with JavaScript breaks BlackBerry submission

  - by ahsteele

  The following code is being used to disable a Submit button once it has been clicked. This works great on desktop browsers and most BlackBerry mobile browsers. Submit.Attributes.Add("onclick", "javascript:this.disabled=true;" + ClientScript.GetPostBackEventReference(Submit, null)); Unfortunately, when using a BlackBerry Storm clicking the submit button causes the device to just reload the page. If I remove this code the Storm browser submits the page just fine. I need to disable the button when the browser is capable of doing so but do not want to affect browsers that are not JavaScript capable. I realize I could add the jQuery framework and only attach the event client side, but am trying to look for the simplest fix (read least intrusive) as this is a legacy application. Any suggestions?

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