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  • Using OpenSessionInViewInterceptor with Hibernate and JSF 2

    - by sammy
    I'm building an application in Hibernate, Spring and JSF2 using only annotations. How can I take advantage of OpenSessionInViewInterceptor found in Spring to catch any hibernate session that might open within a bean? I'm trying to elegantly solve the common “failed to lazily initialize a collection of role: your.Class.assocation no session or session was closed.” problem when trying to read from a yet uninitialized list of POJOs inside another POJO (A Tag entity retrieved by a DAO that contains a List of Project objects I want to read). I've found this: http://www.paulcodding.com/blog/2008/01/21/using-the-opensessioninviewinterceptor-for-spring-hibernate3/ but failed to make use of it in my environment. Please provide a detailed answer, as the Internet is full of foggy, unhelpful tutorials. I'll also be greatful for an alternative solution, given a step-by-step instruction is provided.

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  • 2 listbox to exchange value with DBML

    - by Garcia Julien
    Hi, i'have two Listbox. the think is i do the transfert like : click on field in the left listbox, hit "move right" button and it wll display in the right list box.' The other think it's the first Listbox is bind on Dataset and the second on Entity (Linq-to sql). So when i click on the move next i do that : Dim newSite As New List(Of vw_SiteList) For Each row As SitesDataset.FDDSTRow In SiteAdsListBox.SelectedItems newSite.Add(New vw_SiteList With { _ .SITECODE = row.DEST_COD, _ .SiteDisplay = row.SiteDisplay, _ .CREATEDBY = Environment.GetEnvironmentVariable("USERNAM"), _ .DATECREATED = Now _ }) Next JCDataContext.vw_SiteLists.InsertAllOnSubmit(NewSite) I would like to see now the new field in the right listbox but it isn't there because the field itr's not yet added in the database. How can i do that? Thanks Ju

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  • How to parse AMF data in Ruby?

    - by Matchu
    So I see that there are a few Rails plugins for serving AMF. However, is there a library that I can use in a Ruby environment to act as an AMF client: to read AMF data, and deserialize it into a Ruby object? If not, how could I best go about using tools built in other languages? I suppose I could write something in Python or Java or whatever, and call it from Ruby directly via backticks... but I'd first like to ensure that there isn't really any better option. Thanks!

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  • Is preg_match safe enaught in input satinization?

    - by DaNieL
    Im building a new web-app, LAMP environment... im wondering if preg_match can be trusted for user's input validation (+ prepared stmt, of course) for all the text-based fields (aka not html fields; phone, name, surname, etc..). For example, for a classic 'email field', if i check the input like: $email_pattern = "/^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)" . "|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}" . "|[0-9]{1,3})(\]?)$/"; $email = $_POST['email']; if(preg_match($email_pattern, $email)){ //go on, prepare stmt, execute, etc... }else{ //email not valid! do nothing except warn the user } can i sleep easy against the sql/xxs injection? I write the regexp to be the more restrictive as they can.

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  • IWshShortcut Target Resolution in Windows 7

    - by Dan Walker
    I've got some code to read shortcuts using the Windows Script Host, but it appears to have a problem in Windows 7. When reading shortcuts, if there is an environment variable in the target path, it resolves to the wrong drive. For example, the shortcut to Notepad resolves to D:\Windows\system32\notepad.exe instead of C:\Windows\system32\notepad.exe. The problem is not with my computer's settings, because the shortcut works just fine, and when looking at the value for %SystemRoot%, it shows C:\Windows. Any ideas as to what could be the problem, or alternatively, what a different method of reading shortcuts would be? Thanks, Dan

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  • Rails Action and Fragment Caching during Development?

    - by viatropos
    I'm just starting to get into Rails caching and am wondering how to test whether or not caching is working in my development environment. I have set these two config variables for both the development (temporarily) and production environments: config.action_controller.perform_caching = true config.action_controller.page_cache_directory = File.join(RAILS_ROOT, 'public', 'cache') And my controller basically looks like this (using the resource_controller gem): class EventsController < Spree::BaseController resource_controller caches_page :index index.response do |format| format.html format.xml { render :xml => @collection.to_xml } end # ... end If I do that, I get these files: public/cache/events.html public/cache/events.xml But when I change caches_page to caches_action, I don't see any generated files and am not sure how to tell if the response has been cached. What do I need to know to know that this is working? I've read the docs and related, the rails caching guides, the railscast, and a few other docs, but I'm still wondering where everything is stored. Thanks!

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  • ASP .NET MVC; return HTML along with JavaScript

    - by effkay
    I have a partial view which renders a table. On page load, I am using JQuery to perform Zebra Stripping on it. Whenever ajax refreshes the table, DOM elements are updated, but since JQuery code to do the Zebra Stripping is not executed; table looks ugly. I have tried adding Javascript in my partial view if( Request.IsAjaxRequest() ) return PartialView( "AdministrationGrid", Users ); but javascript is not executed. I guess the only way to execute the Javascript as reply is to do: return JavaScript( "alert( '' )" ); Anyone with an idea how can I achieve this? I thought about JQuery Live, but it is used to bind itself to events.

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  • Explain Python extensions multithreading

    - by Checkers
    Python interpreter has a Global Interpreter Lock, and it is my understanding that extensions must acquire it in a multi-threaded environment. But Boost.Python HOWTO page says the extension function must release the GIL and reacquire it on exit. I want to resist temptation to guess here, so I would like to know what should be GIL locking patterns in the following scenarios: Extension is called from python (presumably running in a python thread). And extension's background thread calls back into Py_* functions. And a final question is, why the linked document says the GIL should be released and re-acquired?

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  • Monitoring pthread context switching

    - by simon
    I would like to monitor the the context switching behavior in a multi-threaded pthread application. In other RTOSes(Micro C OS) I have been able to register a context switch callback for each thread in the application, and then log (or toggle a gpio) and watch the thread context switching in real time. This was a valuable tool for debugging the real time behavior and interaction of the multiple threads. My current environment is embedded linux utilizing the pthread api. Is there a way to montior each of the context switches?

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  • Changing postgres user password in a master-slave setup

    - by NRS
    We have PITR setup and WAL shipping enabled. We would like to change the password for the user postgres. The process is simple enough. However, since we cannot connect to the SLAVE how would we make sure all passwords are in synch? Would temporarily disabling WAL shipping allow me to connect to the slave to change the password there? I cant seem to find documentation on a clean way to implement this password change and I don't have a test environment.

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  • Use of "setTimeout()" in my jQuery Expression

    - by Aaron Salazar
    I'm trying to add the JavaScript function setTimeout() to my jQuery expression. Without the setTimeout() my function loads a partial view with updated information when I enter text into my textbox. But, it loads the information with every keystroke. My logic is that if I can put in a timer then when the user stops typing, a second later the data is updated. As you can see I tried to put a setTimer() in but it doesn't seem to be working. $(function() { $('#DocId').live('keyup', function() { setTimeout(var styleValue = $(this).val(); $('#tableContent').load( '/CurReport/TableResults', { style: $(this).val()}), 1000); }), }); Thank you, Aaron

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  • Silverlight 4 - encoding PCM data from the microphone

    - by Richard
    Hi I've written a basic SL4 application to capture audio data from the microphone using CaptureSource. The trouble is, it's raw PCM output - which means huge and uncompressed. Given that I need this application to run purely within a SL4 environment, how can I compress the PCM audio data into something that can be delivered to a remote server more easily? In conversation, people have suggested Speex and WMA for instance, but I haven't found any libraries or examples that work without requiring reference to DLL's that won't work in a SL4 project. Thanks, Richard.

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  • What trivial real-life example do you use to explain programming to total non-programmers?

    - by anon
    Programmers seem to live in a world of their own (as this site indicates), with their own vibrant culture - and their own premises and vocabulary. Once we've been in the field for a bit, we take a lot of things for granted. But I'm often faced with the question "What do you do?" Or "What is programming?" I generally try to answer this with a small, often trivial, real-world example of how programming is prevalent in our everyday lives and keeps things running. The example I use most often is an elevator - someone has to program the logic of that... And I've seen elevators that are "smart" and ones that are quite backwards and foolish. (And you can easily understand if/decision and looping from that... incorporates a lot of important programming concepts in a very small example.) I've sometimes heard people use traffic lights as an example. What example do you / would you use to explain the concept of programming to someone completely clueless?

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  • I need git-svn to act as a Subversion v1.5+ client

    - by Ben Ward
    I'm running git 1.7 on Mac OSX, installed via Homebrew. I'm trying to use git svn to work with a Subversion server that requires Subversion 1.5 clients (a restriction enforced via a pre-commit hook.) Running git svn --version reveals that as far as git is concerned, git svn is equivalent to svn v1.4.4. I can't establish whether git svn is a total clone of subversion, and thus needs to be updated to meet subversion v1.5 functionality, or if git is compiled against or just points to some version of subversion under the hood. I've struggled finding anyone else trying to upgrade the version of git-svn, and I'm guessing this client version restriction is unusual, but I'm stuck with it (corporate environment.) Is it possible to have git operate as svn 1.5?

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  • Are there any code libraries that validate/convert blog comments to XHTML strict?

    - by Matthew James Taylor
    I am working on a website in PHP where people can make comments similar to a blog, and I only want particular tags to be allowed. Are there any pre-built libraries that process comments and produce valid XHTML Strict code? I would need to do this in JavaScript so I can generate a live preview like Stack Overflow, plus in PHP before saving it to a MySQL database. The allowed HTML tags will be: strong, em, blockquote, and links (rel=nofollow not required) One way would be to allow people to directly enter the HTML into the comment field but I would prefer to use a simple mark up something like this (can be different - this is an example): *strong* _em_ [blockquote] http://www.link.com I want line breaks to be converted to <br />. Are there any code libraries that do the above?

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  • wowza vs Flash Media Server (FMS / FMIS) - ease of integration with ASP.Net

    - by alchemical
    We're creating a web site offering one to many video chat and trying to decide on which of these streaming servers to go with. Looking at around 256kbps live streams, hoping to achieve at least 1000 simultaneous streams on one 8-core server. Wowza is cheaper (1k vs 5k for FMS), and appears to be used successfully by many sites (StreamLive, Justin.TV, etc.). However, some people have expressed that it may be more difficult to work with. I.e. fine-tuning it, less documentation, integration with ASP.Net code, etc. Wondering if anyone with real-world experience with either of these servers can advise regarding how easy or difficult to use and integrate they are for a site like this. Also wondering if there is any performance difference (lag, etc.).

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  • .NET Active Directory Password Expiration on Windows 2008

    - by Brent Pabst
    Searched SO and Everywhere else, including the .net developers guide to directory services programming book - no luck. I am trying to create a simple password reset web page that allows the user to change their password. The change password portion of the code is working fine. For the users I would also like to display when their current password will expire next. Using the sample code from the book mentioned above I was able to get all of the code setup however, the attribute that is returned is always equal to Long.MinValue and hence cannot be inverted to a positive number, plus this means it did not find the proper domain setting. Does anyone have sample code or references for getting the password expiration in a Windows 2008 or R2 domain environment where password policies can be different for each user?

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  • Streaming Media Server and Hosting

    - by Ryan Max
    My partner and I have a webcam site that basically runs the old-school method....Every 0.5 seconds the javascript reloads the image in the browser from the webcam. However we are wanting to upgrade to a streaming media server to get higher quality video, and possibly audio. We aren't tied to any one specific file format or server type, as of right now we are leaning towards slicehost (as scalability is important), and installing darwin streaming server or wowza. This is meant to be a live stream. Does anyone have any suggestions for hosts/server software?

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  • Query and/or Search for SharePoint Document ID

    - by Paul-Jan
    We have the sharepoint 2010 environment with Document ID's enabled. Given (part of) a Doc ID, we want to programmatically retrieve the document(s) matching that ID. The problem seems to be that this column is rather special, in that it might need special handling. Using an SPSiteDataQuery, fetching the _dlc_DocId field as part of the viewfields works fine. However, including it as part of the where query never results in any documents being fetched. Using the Search API has gotten us nowhere at all. Has anyone pulled this off, or any suggestions on how to tackle this problem? [Update] Looks like DocumentIdProvider.GetDocumentUrlsById might be used for this purpose. If necessary, the matching SPListItem can then be found by querying on the URL. However, the MSDN documentation doesn't document the documentId arugment properly, so I'm unsure whether partial ID's are allowed and in what format.

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  • C++ project type: unicode vs multi-byte; pros and cons

    - by Stefan Valianu
    I'm wondering what the Stack Overflow community thinks when it comes to creating a project (thinking primarily c++ here) with a unicode or a multi-byte character set. Are there pros to going Unicode straight from the start, implying all your strings will be in wide format? Are there performance issues / larger memory requirements because of a standard use of a larger character? Is there an advantage to this method? Do some processor architectures handle wide characters better? Are there any reasons to make your project Unicode if you don't plan on supporting additional languages? What reasons would one have for creating a project with a multi-byte character set? How do all of the factors above collide in a high performance environment (such as a modern video game) ?

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  • how to use lightbox2 to show video in my page

    - by Mithun Madhav
    Hi I want to show a popup you tube video player in my web page.I downloaded lighbox from the following link: http://ftp.drupal.org/files/projects/lightbox2-6.x-1.11.zip I extracted the zip file into my sites root I added the following lines in my page header: <link type="text/css" rel="stylesheet" media="all" href="/lightbox2/css/lightbox.css?1" / <script type="text/javascript" src="/lightbox2/js/auto_image_handling.js?1"></script> <script type="text/javascript" src="/lightbox2/js/lightbox_video.js?1"></script> <script type="text/javascript" src="/lightbox2/js/lightbox.js?1"></script> and the following in the body <a href="http://www.youtube.com/watch?v=0gBtF_awV2o" rel=lightvideo[width:500px;height:400px;] <img src="sample" alt="Live TV" But the video opens up in a new tab and not as a popup.Where am i going wrong?I cant find tutorials for this anywhere, although i have this kind of code in many other pages with popup videos.

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  • Master Details and collectionViewSource in separate views cannot make it work.

    - by devnet247
    Hi all, I really cannot seem to make/understand how it works with separate views It all works fine if a bundle all together in a single window. I have a list of Countries-Cities-etc... When you select a country it should load it's cities. Works So I bind 3 listboxes successfully using collection sources and no codebehind more or less (just code to set the datacontext and selectionChanged). you can download the project here http://cid-9db5ae91a2948485.skydrive.live.com/self.aspx/PublicFolder/2MasterDetails.zip <Window.Resources> <CollectionViewSource Source="{Binding}" x:Key="cvsCountryList"/> <CollectionViewSource Source="{Binding Source={StaticResource cvsCountryList},Path=Cities}" x:Key="cvsCityList"/> <CollectionViewSource Source="{Binding Source={StaticResource cvsCityList},Path=Hotels}" x:Key="cvsHotelList"/> </Window.Resources> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition/> <ColumnDefinition/> <ColumnDefinition/> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition Height="Auto"/> <RowDefinition/> </Grid.RowDefinitions> <TextBlock Grid.Column="0" Grid.Row="0" Text="Countries"/> <TextBlock Grid.Column="1" Grid.Row="0" Text="Cities"/> <TextBlock Grid.Column="2" Grid.Row="0" Text="Hotels"/> <ListBox Grid.Column="0" Grid.Row="1" Name="lstCountries" IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding Source={StaticResource cvsCountryList}}" DisplayMemberPath="Name" SelectionChanged="OnSelectionChanged"/> <ListBox Grid.Column="1" Grid.Row="1" Name="lstCities" IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding Source={StaticResource cvsCityList}}" DisplayMemberPath="Name" SelectionChanged="OnSelectionChanged"/> <ListBox Grid.Column="2" Grid.Row="1" Name="lstHotels" ItemsSource="{Binding Source={StaticResource cvsHotelList}}" DisplayMemberPath="Name" SelectionChanged="OnSelectionChanged"/> </Grid> Does not work I am trying to implement the same using a view for each eg(LeftSideMasterControl -RightSideDetailsControls) However I cannot seem to make them bind. Can you help? I would be very grateful so that I can understand how you communicate between userControls You can download the project here. http://cid-9db5ae91a2948485.skydrive.live.com/self.aspx/PublicFolder/2MasterDetails.zip I have as follows LeftSideMasterControl.xaml <Grid> <ListBox Name="lstCountries" SelectionChanged="OnSelectionChanged" DisplayMemberPath="Name" ItemsSource="{Binding Countries}"/> </Grid> RightViewDetailsControl.xaml MainView.xaml <CollectionViewSource Source="{Binding}" x:Key="cvsCountryList"/> <CollectionViewSource Source="{Binding Source={StaticResource cvsCountryList},Path=Cities}" x:Key="cvsCityList"/> </UserControl.Resources> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition/> <ColumnDefinition Width="3*"/> </Grid.ColumnDefinitions> <Views:LeftViewMasterControl x:Name="leftSide" Margin="5" Content="{Binding Source=}"/> <GridSplitter Grid.Column="0" Grid.Row="0" Background="LightGray"/> <Views:RightViewDetailsControl Grid.Column="1" x:Name="RightSide" Margin="5"/> </Grid> ViewModels public class CountryListVM : ViewModelBase { public CountryListVM() { Countries = new ObservableCollection<CountryVM>(); } public ObservableCollection<CountryVM> Countries { get; set; } private RelayCommand _loadCountriesCommand; public ICommand LoadCountriesCommand { get { return _loadCountriesCommand ?? (_loadCountriesCommand = new RelayCommand(x => LoadCountries(), x => CanLoadCountries)); } } private static bool CanLoadCountries { get { return true; } } private void LoadCountries() { var countryList = Repository.GetCountries(); foreach (var country in countryList) { Countries.Add(new CountryVM { Name = country.Name }); } } } public class CountryVM : ViewModelBase { private string _name; public string Name { get { return _name; } set { _name = value; OnPropertyChanged("Name"); } } } public class CityListVM : ViewModelBase { private CountryVM _selectedCountry; public CityListVM(CountryVM country) { SelectedCountry = country; Cities = new ObservableCollection<CityVM>(); } public ObservableCollection<CityVM> Cities { get; set; } public CountryVM SelectedCountry { get { return _selectedCountry; } set { _selectedCountry = value; OnPropertyChanged("SelectedCountry"); } } private RelayCommand _loadCitiesCommand; public ICommand LoadCitiesCommand { get { return _loadCitiesCommand ?? (_loadCitiesCommand = new RelayCommand(x => LoadCities(), x => CanLoadCities)); } } private static bool CanLoadCities { get { return true; } } private void LoadCities() { var cities = Repository.GetCities(SelectedCountry.Name); foreach (var city in cities) { Cities.Add(new CityVM() { Name = city.Name }); } } } public class CityVM : ViewModelBase { private string _name; public string Name { get { return _name; } set { _name = value; OnPropertyChanged("Name"); } } } Models ========= public class Country { public Country() { Cities = new ObservableCollection<City>(); } public string Name { get; set; } public ObservableCollection<City> Cities { get; set; } } public class City { public City() { Hotels = new ObservableCollection<Hotel>(); } public string Name { get; set; } public ObservableCollection<Hotel> Hotels { get; set; } } public class Hotel { public string Name { get; set; } }

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  • How to draw a smooth/dithered gradient on a canvas in Android

    - by André
    Several answers mention to use GradientDrawable.setDither(true) to draw smooth gradients in Android. That has no effect in my code. Any idea what I have to change to get a well looking gradient in my live wallpaper? GradientDrawable gradient = new GradientDrawable(Orientation.TL_BR, colors); gradient.setGradientType(GradientDrawable.RADIAL_GRADIENT); gradient.setGradientRadius(canvas.getWidth() * 2); gradient.setDither(true);g gradient.setGradientCenter(-0.1f, -0.1f); gradient.setBounds(cb); gradient.draw(canvas);

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  • Database Network Latency

    - by Karl
    Hi All, I am currently working on an n-tier system and battling some database performance issues. One area we have been investigating is the latency between the database server and the application server. In our test environment the average ping times between the two boxes is in the region of 0.2ms however on the clients site its more in the region of 8.2 ms. Is that somthing we should be worried about? For your average system what do you guys consider a resonable latency and how would you go about testing/measuring the latency? Karl

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  • Core dump equivalence for Java

    - by m3rLinEz
    So far I have learned about generating thread dump and heap dump using jstack and and jmap respectively. However, jstack thread dump contains only texts describing the stack on each thread. And opening heap dump (.hprof file) with Java VisualVM only shows the objects allocated in the heap. What I actually want is to be able see the stack, to switch to particular stack frame, and watch local variables. This kind of post-mortem debugging can be done normally with tools like WinDbg, gdb and a core file (for a native C++ program.) I wonder if such 'core' file (which will allow me to debug in non-live environment) exists in Java?

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