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• Html.RenderAction<MyController> - does not have type parameters

  - by Ami

  Hi, I'm trying to use RenderAction in the following way: '<% Html.RenderAction( x = x.ControllerAction() ); %' as seen here: http://devlicio.us/blogs/derik_whittaker/archive/2008/11/24/renderpartial-vs-renderaction.aspx and here: http://eduncan911.com/blog/html-renderaction-for-asp-net-mvc-1-0.aspx but I keep getting an error about the method not having type parameters. also in MSDN I see there is no documentation for it, and also checking the MVC source code I can't find anything. I'm using the latest ASP.Net MVC (2.0 RTM) is this feature no longer available? how can I use it? thanks.

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• Long-running transactions structured approach

  - by disown

  I'm looking for a structured approach to long-running (hours or more) transactions. As mentioned here, these type of interactions are usually handled by optimistic locking and manual merge strategies. It would be very handy to have some more structured approach to this type of problem using standard transactions. Various long-running interactions such as user registration, order confirmation etc. all have transaction-like semantics, and it is both error-prone and tedious to invent your own fragile manual roll-back and/or time-out/clean-up strategies. Taking a RDBMS as an example, I realize that it would be a major performance cost associated with keeping all the transactions open. As an alternative, I could imagine having a database supporting two isolation levels/strategies simultaneously, one for short-running and one for long-running conversations. Long-running conversations could then for instance have more strict limitations on data access to facilitate them taking more time (read-only semantics on some data, optimistic locking semantics etc). Are there any solutions which could do something similar?

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• Modal View Controller Undesirably Hides Tab Bar

  - by Kevin Sylvestre

  I am working on an application that requires user authentication to access a profile. The profile section is located solely under one tab (and all others tabs do not require authentication). I currently present a authentication view controller modally (and then dismiss on success) when the user selects the profile tab. However, this approach prevents the user from deciding not to register / login (that is, all tabs are hidden once the authentication screen is presented modally). I don't want the user to be able to dismiss the modal view controller, but rather have it modal only for the profile tab. Is this possible? Can I have tabs visible while having a modal view controller? What is the best approach here. Thanks.

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• Lucene's nested query evaluation regarding negation

  - by ponzao

  Hi, I am adding Apache Lucene support to Querydsl (which offers type-safe queries for Java) and I am having problems understanding how Lucene evaluates queries especially regarding negation in nested queries. For instance the following two queries in my opinion are semantically the same, but only the first one returns results. +year:1990 -title:"Jurassic Park" +year:1990 +(-title:"Jurassic Park") The simplified object tree in the second example is shown below. query : Query clauses : ArrayList [0] : BooleanClause "MUST" occur : BooleanClause.Occur "year:1990" query : TermQuery [1] : BooleanClause "MUST" occur : BooleanClause.Occur query : BooleanQuery clauses : ArrayList [0] : BooleanClause "MUST_NOT" occur : BooleanClause.Occur "title:"Jurassic Park"" query : TermQuery Lucene's own QueryParser seems to evaluate "AND (NOT" into the same kind of object trees. Is this a bug in Lucene or have I misunderstood Lucene's query evaluation? I am happy to give more information if necessary.

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• Round-robin assignment

  - by Robert

  Hi, I have a Customers table and would like to assign a Salesperson to each customer in a round-robin fashion. Customers --CustomerID --FName --SalespersonID Salesperson --SalespersonID --FName So, if I have 15 customers and 5 salespeople, I would like the end result to look something like this: CustomerID -- FName -- SalespersonID 1 -- A -- 1 2 -- B -- 2 3 -- C -- 3 4 -- D -- 4 5 -- E -- 5 6 -- F -- 1 7 -- G -- 2 8 -- H -- 3 9 -- I -- 4 10 -- J -- 5 11 -- K -- 1 12 -- L -- 2 13 -- M -- 3 14 -- N -- 4 15 -- 0 -- 5 etc... I've been playing around with this for a bit and am trying to write some SQL to update my Customers table with the appropriate SalespersonID, but am having some trouble getting it to work. Any ideas are greatly appreciated!

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• Ajax cache control

  - by Brian

  Hello, I am having a problem with ajax requests in Internet Explorer and in Chrome - I cannot bust the cache. Normal pages don't have the problem - it's just the ajax requests. I know that one workaround is to append a random query string variable to the end of the URL. However, I don't want to lose all the benefits of caching, I just want the browser to pick up the new file if the version on the server is different from the cached version. I have tried manually setting the ajax POST header, to no avail: xmlHttp.setRequestHeader("Cache-Control", "must-revalidate"); Adding this to my .htaccess file doesn't work either: <FilesMatch "\.(js|css).*" Header set Cache-Control: "max-age=172800, public, must-revalidate" </FilesMatch Any help would be greatly appreciated. Thanks, Brian

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• iPhone Provisioning Profile problems...

  - by James

  I have already successfully submitted two apps to the app store, so I should be able to do it by now, right? With my most recent app, however, I'm having a bear of a time with getting the Application Identifier or Bundle Identifier set up. In my distribution profile, I have included the identifier "com.jmock.irowbeta", and then copied it exactly into the the app's Info.plist file under "Bundle Identifier". In the past, this has done the trick, but now I'm getting the error Provisioning profile 'irow beta' specificies the identifier 'com.jmock.irowbeta' which doesn't match the current setting 'com.yourcompany.irow-beta'. So it seems that its somehow still using the default of com.yourcompany.APPLICATION_NAME, but it shouldn't after I have changed it in the Info.plist, right? I think this means that xcode isn't recognizing that PLIST for some reason, because when I change the name of the icon file, for example, or other such attributes, nothing changes. If this is the problem, how do I make xcode recognize the PLIST? Otherwise, what the heck is going on? Thanks, James

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• ASP.NET authentication login and logout with browser back button

  - by Eatdoku

  Hi, I am looking for a solution for user use the browser's back button to navigate to previous page once logged out. I have a web application build in asp.net and using a custom membership provider for authentication and authorization. Everything works fine except when the user click on the logout link to log out of the application and being redirect to a default cover page, if the use click on the BACK BUTTON on their browser, it will actually go back to where they were before and the data will still show up. Of course they can't do anything on that page, click on anything link they will be redirect to a login page again. But having those information display is making a lot users confused. i am just wondering if there is any way i can either clear the browser's history so use can't go BACK, or when they click on the back button and have them redirect to the login page. thanks

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• java generics covariance

  - by soocracy42

  I am having trouble understanding the following article: http://www.ibm.com/developerworks/java/library/j-jtp01255.html Under, Generics are not covariant the author states, Because ln is a List, adding a Float to it seems perfectly legal. But if ln were aliased with li, then it would break the type-safety promise implicit in the definition of li -- that it is a list of integers, which is why generic types cannot be covariant. I can't understand the part where it says "if ln were aliased with li". What does the author means by alias?(reference?). The code snippet above the quoted line seems to illustrate WHAT is illegal in java and not WHY. It would be very helpful to me if somebody could explain with an example. Thanks in advance.

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• IE9 Acid 3 test?

  - by yuval

  Does anybody know if Microsoft is planning on having IE9 pass with 100/100 on acid 3? The current version of IE9 gets a 68/100 on the test (can be viewed here, main site here). What did IE8 pass with? What about IE7? How does it compare to other modern browsers such as Safari, Firefox, and Chrome? Please submit useful answers, not opinions on how bad IE is, I don't like it either. Thanks a bunch!

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• Adding a header view to a UIWebView similar to Safari and Articles

  - by MrMage

  I'd like to add a header view to an UIWebView similar to the address/search bar in MobileSafari and the excellent Articles.app by Sophia Teutschler. More precisely, I'd like to create a "pull to fix orientation" view above a UIWebView, just like in Articles. Articles does use a UIWebView, so it seems to be possible. Is there a way to accomplish this without having to embed the UIWebView into a UIScrollView and updating its size all the time, as described in this article? Apparently, I do need the scrolling events to have the "pull to fix orientation" behave accordingly.

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• Refactoring a custom User model to user UserProfile: Should I create a custom UserManager or add use

  - by BryanWheelock

  I have been refactoring an app that had customized the standard User model from django.contrib.auth.models by creating a UserProfile and defining it with AUTH_PROFILE_MODULE. The problem is the attributes in UserProfile are used throughout the project to determine the User sees. I had been creating tests and putting in this type of statement repeatedly: user = User.objects.get(pk=1) user_profile = user.get_profile() if user_profile.karma > 10: do_some_stuff() This is tedious and I'm now wondering if I'm violating the DRY principle. Would it make more sense to create a custom UserManager that automatically loads the UserProfile data when the user is requested. I could even iterate over the UserProfile attributes and append them to the User model. This would save me having to update all the references to the custom model attributes that litter the code. Of course, I'd have to reverse to process for to allow the User and UserProfile models to be updated correctly. Which approach is more Django-esque?

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• BlackBerry Storm - Cannot scroll vertically while in TreeField

  - by sethxian

  I am having issues performing a vertical scroll on the BlackBerry Storm while in a TreeField. The tree nodes expand just fine, even with expanded nodes while in the tree I cannot scroll to the bottom of the expanded list. Sometimes it will scroll a little but then not allow me to scroll back up. Could this be an issue with the screen not being a fixed size? The TreeField is in a VeriticalFieldManager with the VERTICAL_SCROLL and VERTICAL_SCROLLBAR styles. The screen I am using is MainScreen.

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• How to pass a very long string/file into RESTWebservice JAX-RS Jersey

  - by Sashikiran Challa

  Hello All, I am trying to write a webservice that takes in an XML string, does parsing of it using DOM and extract particular things I want. My XML string happens to be very long so I do not want to pass it as a @QueryParam or @PathParam. Say If I write that XML string into a file, How do I go about writing a RESTful service that takes in this file, extracts whatever I want and return the results. I am actually trying to extract some number of strings, so my output should probably be an ArrayList having all these strings. Could somebody please shed some light on how I should go about doing this. Thanks in advance

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• SSIS - Upgrade from 2005 to 2008 - How to set a project property when I don't have a project

  - by Greg

  I have about 160 SSIS packages that I'm trying to upgrade from 2005 to 2008. When I run SSISUpgrade.exe on them, I get the following error messages on many of the packages: Error 0xc0209303: ...: SSIS Error Code DTS_E_OLEDB_NOPROVIDER_64BIT_ERROR. The requested OLE DB provider MICROSOFT.JET.OLEDB.4.0 is not registered -- perhaps no 64-bit provider is available. enter code here`Error code: 0x00000000. An OLE DB record is available. Source: "Microsoft OLE DB Service Components" Hresult: 0x80040154 Description: "Class not registered". This fellow says that to fix this I need to set the run64bitruntime debugging property to False. However each of these packages exists outside of a project file. How can I set this property without having a project file?

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• Upload Image with Django Model Form

  - by jmitchel3

  I'm having difficulty uploading the following model with model form. I can upload fine in the admin but that's not all that useful for a project that limits admin access. #Models.py class Profile(models.Model): name = models.CharField(max_length=128) user = models.ForeignKey(User) profile_pic = models.ImageField(upload_to='img/profile/%Y/%m/') #views.py def create_profile(request): try: profile = Profile.objects.get(user=request.user) except: pass form = CreateProfileForm(request.POST or None, instance=profile) if form.is_valid(): new = form.save(commit=False) new.user = request.user new.save() return render_to_response('profile.html', locals(), context_instance=RequestContext(request)) #Profile.html <form enctype="multipart/form-data" method="post">{% csrf_token %} <tr><td>{{ form.as_p }}</td></tr> <tr><td><button type="submit" class="btn">Submit</button></td></tr> </form> Note: All the other data in the form saves perfectly well, the photo does not upload at all. Thank you for your help!

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• Automated builds of BizTalk 2009 projects using Team System 2008 Build

  - by Doug

  I'm trying to configure automated build of BizTalk 2009 projects using Team Foundation Server 2008. We have a staging server which has BizTalk 2009 installed. I ran the Team Foundation Server Build Setup on this server, and it can build non-BizTalk projects OK. However, BizTalk projects fail to build. I suspected something was amiss when "Deployment" was not a valid build type! I tried copying various things over from a developer PC which has BizTalk and Visual Studio 2008 installed, but still couldn't get it to work. I don't really want to install Visual Studio on the staging server, but without it the "Developer Tools and SDK" option in the BizTalk install is greyed out. I guess I need this in order for BizTalk projects to compile. So, my question is can a BizTalk 2009 server be used as a TFS build agent to build BizTalk projects without having Visual Studio installed. If the answer is no, what's the smallest part of VS that can be installed to get this to work? Thanks in advance.

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• What is so bad about using SQL INNER JOIN

  - by Stephen B. Burris Jr.

  Everytime a database diagram gets looked out, one area people are critical of is inner joins. They look at them hard and has questions to see if an inner join really needs to be there. Simple Library Example: A many-to-many relationship is normally defined in SQL with three tables: Book, Category, BookCategory. In this situation, Category is a table that contains two columns: ID, CategoryName. In this situation, I have gotten questions about the Category table, is it need? Can it be used as a lookup table, and in the BookCategory table store the CategoryName instead of the CategoryID to stop from having to do an additional INNER JOIN. (For this question, we are going to ignore the changing, deleting of any CategoryNames) The question is, what is so bad about inner joins? At what point is doing them a negative thing (general guidelines like # of transactions, # of records, # of joins in a statement, etc)?

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• How to stop SWF inside of a jQuery UI tab from reloading

  - by Raul Agrait

  I have a SWF movie inside of a jQuery UI tab, and the problem I'm having is that the SWF gets reloaded everytime I click away from the tab, onto another tab, and then click back. I can inspect the DOM and see that the div containing the SWF is still in the DOM when I click away, so I don't know why this it seems to reload it when I click back to the tab. I added the following CSS rules to try to prevent the display being set to: none, but the Flash movie is still reloading: .ui-tabs .ui-tabs-hide { display: block !important; position: absolute; left: -10000px; }

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• Select and Insert across dblink

  - by Domtar

  I am having a bit of trouble with a select into insert across a dblink in oracle 10. I am using the following statement: INSERT INTO LOCAL.TABLE_1 ( COL1, COL2) SELECT COL1, COL2 FROM REMOTE.TABLE1@dblink s WHERE COL1 IN ( SELECT COL1 FROM WORKING_TABLE) When I run the statement the following is what gets run against the remote server on the DB Link: SELECT /*+ OPAQUE_TRANSFORM */ "COL1", "COL2" FROM "REMOTE"."TABLE1" "S" If I run the select only and do not do the insert into the following is run: SELECT /*+ */ "A1"."COL1" , "A1"."COL2" FROM "REMOTE"."TABLE1" "A1" WHERE "A1"."COL1" = ANY ( SELECT "A2"."COL1" FROM "LOCAL"."TABLE1"@! "A2") The issue is in the insert case the enitre table is being pulled across the dblink and then limited localy which takes a fair bit of time given the table size. Is there any reason adding the insert would change the behavior in this manner?

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• What's the next big thing after LINQ?

  - by Leniel Macaferi

  I started using LINQ (Language Integrated Query) when it was still in beta, more specifically Microsoft .NET LINQ Preview (May 2006). Almost 4 years have passed and here we are using LINQ in a lot of projects for the most diverse tasks. I even wrote my final college project based on LINQ. You see how I like it. LINQ and more recently PLINQ (Parallel LINQ) give our jobs a great boost when it comes to more programming power and less lines of code leading us to more expressive and readable code. I keep thinking what could be the next big language improvement for C# after LINQ. I know there are some promissing language features coming as Code Contracts, etc, but nothing having the impact that LINQ had. What do you think could be the next big thing?

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• Silverlight 4 crashing every browser (SL3 doesn't)

  - by Simon_Weaver

  I am testing my application on a number of machines. It is fine on every machine except 1. I'm having problems with one XP machine where in internet explorer, chrome and firefox the Silverlight plugin crashes on EVERY page with Silverlight. Pages that used to work fine with silverlight 3 crash instantly - including my app and the Silverlight Beta 4 demo page!!! The browser crashes instantly and doesn't even attempt to load the page. I don't know how to debug this because there's no error. It just crashes instantly in all these browsers. Reinistalling, rebooting didn't fix the problem.

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• Blackberry.location API not working correctly

  - by chibineku

  I am experimenting with making Blackberry widgets but having a little trouble. My first trial involves displaying a button which, when clicked, calls a JavaScript function that should alert the phones latitude and longitude. The function looks: function whereAmI() { var latitude = blackberry.location.latitude; var longitude = blackberry.location.longitude; alert("Lat: "+latitude+", Long: "+longitude); } But it only ever alerts "Lat: 0, Long: 0". I've checked and my GPS seems to be working ok. I'm running OS 5.* on a Curve 8900. Any help would be appreciated :)

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• Running a custom VirtualPathProvider with a PreCompiled website

  - by epilog

  Hi, currently I have a custom VirtualPathProvider in a Asp.net MVC web application. This VirtualPathProvider checks the Area from the route "/{Area}/{Controller}/..." and uses the NameSpace.{Area}.Main.dll module to return the views that are contained in that assembly as Embedded Resources. This works great and I don't have to deploy any ascx, js, css files. Now my problem is this: I would like to precompile the aspx and ascx files in the assembly and instead of having the views as embedded resources I would have the view class with all the Response.Write and dings and dongs. I can precompile the views using the aspnet_compiler but I keep getting an error when ever the ViewEngine tries to find the view and fails. My main goal is to have a way for the first time usage of a certain view/usercontrol would be faster and don't wait for the compilation to happen. This is a requirement since the application could be grouped into plugins and this plugins be deployed into the Bin directory. Any thoughts? With best regards Carlos Sobrinho

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• PHP Unlink function Woes on Windows

  - by Abs

  Hello all, I am having problems with the PHP function unlink. I keep getting this error: Warning: unlink(C:\wamp\www\webs\db\db_1276259188.mdb) [function.unlink]: Permission denied in C:\wamp\www\webs\pure-php-export.php on line 242 I am on a windows machine where Apache runs as the user SYSTEM. I have set the permissions of the db folder as "Full Control" for Apache's user. I thought my script might still be holding on to that file (its an uploaded file that gets used via PDO). try{ $dbh = new PDO("odbc:Driver={Microsoft Access Driver (*.mdb, *.accdb)};Dbq=$mdbFilename", $username, $password); }catch(PDOException $e){ echo $e->getMessage(); } So before I attempt to delete the file I unset the above and try to delete like so: $dbh = null; unset($dbh); if(is_file($mdbFilename)){ unlink($mdbFilename); } I really appreciate any help on this as it has been driving me mental for the past two hours! Thanks all for any help.

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