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  • ClassNotFoundException in MySQL Connector/J

    - by Ephraim
    This has been asked before but I cannot find the answer I need. 1) Using Class.forName("com.mysql.java.Driver") in the eclipse IDE all works well. I load the correct jar (mysql-connector-java-5.1.20-bin.jar), no exception. When I create a jar for my app a1.jar and double click the jar, I get the ClassnotFoundException. I created a .bat file in Windows XP with java -classpath c:\temp\mysql-connector-java-5.1.20-bin.jar -jar c:\temp\a1.jar the app statrs with the same exception. Furthermore using System.getProperty ("java.class.path") shows c:\temp\a1.jar whilst in the IDE I can see several directories

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  • Tomcat6 MySql JDBC Datasource configuration

    - by Bob
    Hi, I've always used Spring's dependency injection to get datasource objects and use them in my DAOs, but now, I have to write an app without that. With Spring I can write something like this: <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver" /> <property name="url" value="jdbc:mysql://127.0.0.1/app?characterEncoding=UTF-8" /> <property name="username" value="u" /> <property name="password" value="p" /> </bean> But how can I use datasource in my DAOs without Spring or anything? I'm using servlets and JSPs only. Performance is very important factor. Thanks in advance!

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  • Rewriting VB.NET Lambda experession as a C# statement

    - by ChadD
    I downgraded my app from version 4 of the framework to version 4 and now I want to implement this VB.NET lambda function statement (which works on 3.5) Dim colLambda As ColumnItemValueAccessor = Function(rowItem As Object) General_ItemValueAccessor(rowItem, colName) and rewrite it in C#. This was my attempt: ColumnItemValueAccessor colLambda = (object rowItem) => General_ItemValueAccessor(rowItem, colName); When I did this, I get the following error: Error 14 One or more types required to compile a dynamic expression cannot be found. Are you missing references to Microsoft.CSharp.dll and System.Core.dll? C:\Source\DotNet\SqlSmoke\SqlSmoke\UserControls\ScriptUserControl.cs 84 73 SqlSmoke However, when I downgraded the app from version 4.0 of the framework to 3.5 (because our users only hae 3.5 and don't have rights to install 4.0). when I did this, the reference to "Microsoft.CSharp" was broken. Can I rewrite the VB.NET command in C# using syntax that is valid in C# 3.5 as I was able to in VB.NET? What would the syntax be?

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  • Maven best practice for generating multiple jars with different/filtered classes ?

    - by jaguard
    I developed a Java utility library (similarly to Apache Commons) that I use in various projects. Additionally to fat clients I also use it for mobile clients (PDA with J9 Foundation profile). In time the library that started as a single project spread over multiple packages. As a result I end up with a lot of functionality but not really needed in all the projects. Since this library is also used inside some mobile/PDA projects I need a way to collect just the used classes and generate the actual specialized jars Currently in the projects that area using this library, I have Ant jar tasks that generate (from the utility project) the specialized jar files (ex: my-util-1.0-pda.jar, my-util-1.0-rcp.jar) using include/exclude jar task features. This is mostly needed due to the generated jar size constraints for the mobile projects. Migrating now to Maven I just wonder if there are any best practices to arrive to something similar so I consider the following scenarios: [1] - additionally to the main jar artifact (my-lib-1.0.jar) also generating inside my-lib project the separate/specialized artifacts using classifiers (ex: my-lib-1.0-pda.jar) using Maven Jar Plugin or Maven Assembly Plugin filtering/includes ... I'm not very comfortable with this approach since it pollute the library with library consumers demands (filters) [2] - Create additional Maven projects for all the specialized clients/projects, that will "wrap" the "my-lib" and generate the filtered jar artifacts (ex: my-lib-wrapper-pda-1.0 ...etc). As a result, these wrapper projects will include the filtering (to generate the filtered artifact) and will depend just on the "my-lib" project and the client projects will depend on my-lib-wrapper-xxx-1.0 instead of my-lib-1.0. This approach my look problematic since even that will let "my-lib" project intact (with no additional classifiers & artifacts), basically will double the number of projects since for every client project I'll have one just to collect the needed classes from the "my-util" library ("my-pda-app" project will need a "my-lib-wrapper-for-my-pda-app" project/dependency) [3] - Into the every client project that use the library (ex: my-pda-app) add some specialized Maven plugins to trim - out (when generating the final artifact/package) the un-needed classes (ex: maven-assembly-plugin, maven-jar-plugin, proguard-maven-plugin) What is the best practice for solving this kind of problems in the "Maven way" ?!

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  • Resetting or refreshing a database connection

    - by cdonner
    This Android application on Google uses the following method to refresh the database after replacing the database file with a backup: public void resetDbConnection() { this.cleanup(); this.db = SQLiteDatabase.openDatabase( "/data/data/com.totsp.bookworm/databases/bookworm.db", null, SQLiteDatabase.OPEN_READWRITE); } I did not build this app, and I am not sure what happens. I am trying to make this idea work in my own application, but the data appears to be cached by the views, and the app continues to show data from the database that was replaced, even after I call cleanup() and reopen the database. I have to terminate and restart the activity in order to see the new data. I tried to call invalidate on my TabHost view, which pretty much contains everything. I thought that the views would redraw and refresh their underlying data, but this did also not have the expected result. I ended up restarting the activity programmatically, which works, but this seems to be a drastic measure. Is there a better way?

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  • Web Services: more frequent "small" calls, or less frequent "big" calls

    - by Klay
    In general, is it better to have a web application make lots of calls to a web service getting smaller chunks of data back, or to have the web app make fewer calls and get larger chunks of data? In particular, I'm building a Silverlight app that needs to get large amounts of data back from the server in response to a query created by a user. Each query could return anywhere from a few hundred records to a few thousand. Each record has around thirty fields of mostly decimal-type data. I've run into the situation before where the payload size of the response exceeded the maximum allowed by the service. I'm wondering whether it's better (more efficient for the server/client/web service) to cut this payload vertically--getting all values for a single field with each call--or horizontally--getting batches of complete records with each call. Or does it matter?

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  • Silverlight authentication during startup - how to mimic syncronous behavior?

    - by jkohlhepp
    I have a Silverlight app that is using the MVVM pattern. I have a WCF service which will allow me to authenticate users (I don't have direct control over that service - assume it is a black box that just returns me the user info and a list of privileges the user has). So, when the app starts up, I want to pull security data from that service. Right now, when I do this, my views and view models can end up getting initialized before the service returns with the security data. This causes problems because the view models need to disable buttons and make things visible/invisible based on the user having certain privileges. Is there a pattern that allows me to prevent the initialization of the views / view models until the WCF call has returned? How would you go about solving this problem as elegantly as possible?

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  • Detecting rotation to landscape manually

    - by Thomas Joos
    hi all, I am working on an iPhone application based on UITabBarController and UIViewControllers for each page. The app needs to run in portrait mode only, so every view controller + app delegate goes with this line of code: (BOOL)shouldAutorotateToInterfaceOrientation: (UIInterfaceOrientation)interfaceOrientation { return (interfaceOrientation == UIInterfaceOrientationPortrait); } There is one view controller where I would like to pop up a UIImageView when the iPhone is rotaed to landscapeleft. The design of the image looks landscape, although the width and height are 320x460 ( so its portrait ). How can/should I detect this type of rotation manually, just in this specific view controller, withouth having an auto rotation on the entire view? Thomas UPDATE: Thanks! I added this listener in the viewDidLoad: [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didRotate:)name:UIDeviceOrientationDidChangeNotification object:nil]; the didRotate looks like this: (void) didRotate:(NSNotification *)notification { UIDeviceOrientation orientation = [[UIDevice currentDevice] orientation]; if (orientation == UIDeviceOrientationLandscapeLeft) { //your code here } }

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  • Algorithm for parsing a flat tree into a non-flat tree

    - by Chad Johnson
    I have the following flat tree: id name parent_id is_directory =========================================================== 50 app 0 1 31 controllers 50 1 11 application_controller.rb 31 0 46 models 50 1 12 test_controller.rb 31 0 31 test.rb 46 0 and I am trying to figure out an algorithm for getting this into the following tree structuree: [{ id: 50, name: app, is_directory: true children: [{ id: 31, name: controllers, is_directory: true, children: [{ id: 11, name: application_controller.rb is_directory: false },{ id: 12, name: test_controller.rb, is_directory: false }], },{ id: 46, name: models, is_directory: true, children: [{ id: 31, name: test.rb, is_directory: false }] }] }] Can someone point me in the right direction? I'm looking for steps (eg. build an associative array; loop through the array looking for x; etc.).

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  • Java Logger with Servlets

    - by Sunny
    Hi Guys, I am using a wrapper class A which initializes the java.util.logger static class A { public static Logger logger; public static void init(){ logger = Logger.getLogger("test"); } Now, everywhere in my program I call A.init() and then logger.log("Message+uniqid"). But recently I moved to HTTP servlets and I am having problems. Basically, If a app is already running and the logger is logging... and someone else runs the app again, the logger from the previous instance stops and starts logging for the second one. Can anyone have a solution to how I should go about fixing this static variable issue? I can pass the logger into all constructor classes but thats really tedious. Any better solution would be appreciated..

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  • Why is XCode Organizer console sometimes empty when I connect my iPhone

    - by toofah
    When testing my iPhone app I have found it incredibly useful to log information to the console window. I think it is amazing that I can send out an adhoc build to my co-workers and if they experience problems I am able to plug their iPhone into my mac and grab their console output. However, sometimes the console window is blank when we do this. Why is this the case? The code has been built with logging enabled. Besides that, it seems that the console output, when I see it, contains information about not only my app, but other iphone system logging. Thanks for any insight you can provide.

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  • Rails initializes extremely slow on ruby 1.9.1

    - by Ben Johnson
    I just got my rails 2.3.8 app running on ruby 1.9.1. To get into the console, start the webserver, anything that initializes rails, takes 3 - 4 times longer in ruby 1.9 than in ruby 1.8.7. I'm using ruby version managers so I can easily switch between ruby 1.9 and ruby 1.8.7. The speed difference happens in both production and development. I want to use 1.9 because its must faster once everything is running, but the startup time is so bad the app is timing out on Heroku on the first request. Any ideas why ruby 1.9 would be 3 - 4 times slower? I can't figure it out for the life of me.

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  • How do I check if a swf file loaded correctly since put_Movie always returns S_OK?

    - by Tim
    I am using the latest flash player and have a swf file served locally from my dev machine. In one container test app I am able to play the swf and make calls to it, but in my "Real" application the same code path results in com errors (basically it looks like the swf isn;' loading properly) Additionally this is made more challenging because no matter what nonsense I put in the call to put_Movie() the return is ALWAYS S_OK. This is confusing. How am I supposed to determine if the swf file loaded and is working? As a follow-on, what would cause a swf file (the same one) not to load in a different app? The code paths are the same (from what I can tell). Obviousl something is going on, but I am not sure what. So, I guess 2 questions How to know when swf file doesn't load right Why might it fail in a different container application? I am using ATL in Visual studio 2008, latest flash, MS Vista Thanks

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  • TcpListener.Start() does not open the port

    - by SoMoS
    Hello, I have a class that inherits from the TcpListener, this class Shadows the Start method just to call the base Start() and the base BeginAcceptTcpClient(). From time to time the method is called but the port is not opened (netstat does not show the port open). The class looks like this Public Class ExtendedTcpListener Inherits System.Net.Sockets.TcpListener Public Shadows Sub Start() SyncLock (m_stopLock) MyBase.Start() MyBase.BeginAcceptTcpClient(AddressOf Me.CompleteAcceptTcpClient, Me) My.Application.Log.WriteEntry("Extended Tcp Listener started ...", TraceEventType.Verbose) End SyncLock End Sub Any idea on what's happening or how to debug the issue? As the Start() is called without exception I expected to find the port always opened (the log is always written). Extra information: when the Start method works fine it works each time until app is restarted. When the Start method does not work it won't work again until the app is restarted.

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  • Admin user always prehend initial user

    - by StepH
    Using an InnoSetup script (that seems to work fine under XP/Vista), i've a strange behavior under Seven RC: here is the [Files] section: [Files] Source: *.ico; DestDir: {app}\bin; Flags: ignoreversion Source: dist\*.*; DestDir: {app}\bin; Flags: ignoreversion Source: catalog\*.*; DestDir: {userappdata}\JetWorksheet\catalog; Flags: recursesubdirs createallsubdirs onlyifdoesntexist uninsneveruninstall Source: wizards\*.*; DestDir: {userappdata}\JetWorksheet\wizards; Flags: recursesubdirs createallsubdirs onlyifdoesntexist uninsneveruninstall Source: images\*.*; DestDir: {userdocs}\JetWorksheet\images; Flags: recursesubdirs createallsubdirs Source: wordlists\*.*; DestDir: {userdocs}\JetWorksheet\wordlists; Flags: recursesubdirs createallsubdirs The problem is: In place of using the {userappdata} of the user that started the setup, all the data goes to the "Admin" directories... I'm surely missing somethings...

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  • Cocoa NSOutlineView bug - [NSCFTimer copyWithZone:]: unrecognized selector sent to instance

    - by Circle
    I'm using an NSOutlineView with the function - (BOOL)outlineView:(NSOutlineView *)outlineView isGroupItem:(id)item defined so it gives the group row GUI look. When I add a root item, it works fine. When I add an item to root's child array and expand it, it works fine. If I contract the item though, the following error is logged: [NSCFTimer copyWithZone:]: unrecognized selector sent to instance I also get an EXC_BAD_ACCESS error if the app window is deactivated by switching to another app. I used the debugger to try to find where I might have made an error in one of my functions, but the stack trace only shows functions I did not create (RunCurrentEventLoopInMode, CFRunLoopRunSpecific, handleWindowNeedsDisplay, etc.) Does anyone have any idea where my error(s) might be?

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  • Converting old WCF service to RIA one

    - by Artur
    Hi there, Currently I have a service that looks like: Some app <-- WCF Service <-- Business Logic <-- Entity Framework Model <-- SQL Database One of "some app" would be Silverlight, but there as well will be lots of other clients (mainly mobile devices). To me the greatest benefit of having RIA services is possibility of making ordinary (not asynchronous) calls from Silverlight. I wondered if there is an easy way of converting what I have so far to be a RIA service? I as well wonder if there is a point of doing so if I plan to use the same service for multiple platforms/clients? Any help/links would be greatly appreciated.

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  • How to create a custom admin configuration panel in Django?

    - by Matteo
    Hi, I would like to create a configuration panel for the homepage of the web-app I'm designing with Django. This configuration panel should let me choose some basic options like highlighting some news, setting a showcase banner, and so on. Basically I don't need an app with different rows, but just a panel page with some configuration options. The automatically generated administration area created by Django doesn't seem to handle this feature as far as I can see, so I'm asking you for some directions. Any hint is highly appreciated. Thank you in advance. Matteo

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  • Ruby on Rails: How to verify haml files syntax within rails project?

    - by Acidburn2k
    I've installed HAML into my project and it is working like a charm - the templates are beeing rendered without a problem. My question is how can I do the rendering on the command line, by using HAML program. That would be super for debugging purposes, meantime while I try to compile HAML file I get the error on first Rails related Ruby code to be found: % cat app/views/dashboard/index.html.haml - title "Home" %p Lorem ipsum dolor sit amet... % haml app/views/dashboard/index.html.haml Exception on line 1: undefined method `title' for #<Object:0xb73283b0> Use --trace for backtrace. Page is rendered fine returned correctly through the webserver.

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  • Asp.net 4.0 site fails because no handler mapped with Classic appPool

    - by AndyV
    When I create a Asp.net app and flip the appPool to "ASP.NET v4.0 Classic" it fails with the following error: HTTP Error 404.17 - Not Found The requested content appears to be script and will not be served by the static file handler. After some searching it seems to be the handler not mapping correctly for the Classic mode but I can't find out where or how to fix that. I have the full .Net 4.0 install with VS2010 and the app works fine if I flip the appPool to Integrated. Also, it's a Windows 7 machine (I'm having the same problem on a Vista box). Thanks in advance. Andy

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  • How do I get toolbars on UISplitView detail & root views?

    - by Gerry
    I'm porting my iPhone app to iPad. I have a bunch of detail views that derive from UIViewController and implement UITableViewDelegate. (Basically TableViews but not derived as such). The old app used TabBar, but now I'd like to use SplitView with toolbars on the Detail and Master views. How do I enable a toolbar on my UIViewController inside a UISplitViewController? I'm not using Interface Builder here, just code. @interface HeadlineViewController : UIViewController { UITableView *tableView; NSMutableArray *bullIds; UIActivityIndicatorView *prog; } Thanks,

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  • Silverlight ControlTemplate and F#

    - by akaphenom
    Has anybody had any success incorporating a Silverlight ControlTemplate into an F# Silverlight application. I am trying to add transitions to the Navgiation.Frame element and following along on with a C# example: http://www.davidpoll.com/2009/07/19/silverlight-3-navigation-adding-transitions-to-the-frame-control The downloaded source uses the MSBUILD:Compile option on the template XAML and the file is included as a "Page"... ILDASM doesn't show any object created for the XAML; In my project I incldued it as a "Resource" (same as I have done for my pages) and referenced it in app.xaml: <Application xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Class="Module1.MyApp"> <Application.Resources> <ResourceDictionary> <ResourceDictionary.MergedDictionaries> <ResourceDictionary Source="/FSSilverlightApp;component/TransitioningFrame.xaml"/> </ResourceDictionary.MergedDictionaries> </ResourceDictionary> </Application.Resources> </Application> the TransitioningFrame.xaml is as follows: <ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:navigation="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Navigation" xmlns:toolkit="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Layout.Toolkit"> <ControlTemplate x:Key="TransitioningFrame" TargetType="navigation:Frame"> <Border Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"> <toolkit:TransitioningContentControl Content="{TemplateBinding Content}" Cursor="{TemplateBinding Cursor}" Margin="{TemplateBinding Padding}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" Transition="DefaultTransition" /> </Border> </ControlTemplate> </ResourceDictionary> My page objects all load their respective xaml with the follwoing code: type Page1() as this = inherit UriUserControl("/FSSilverlightApp;component/Page1.xaml") do Application.LoadComponent(this, base.uri) and somewhere in app startup: let p1 = new Page1() I donot have a comparable piece for the ControlTemplate - though I was hoping the application object and App.xaml would pull it in magically (as an aside, the reliance on this magic has made setting up a 100% f# silverlight application rather tricky - as nearly all the published articles I find are based around wizards and short cuts - very little on the acual plumbing - ugh). Any advice or thougts on the subject are appreciated.

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  • symfony: multiple apps, single login?

    - by gruner
    My symfony project is divided into several apps. Using the sfDoctrineGuard plugin I'd like to create another app just for login, and redirect to the appropriate app after login. My questions: • Is this advisable or does it go against how sfGuard is supposed to work? • Is there a way to redirect between applications without hardcoding the entire url? Is there a "symfony way" of doing it, or is this not how projects are supposed to function? (All I can find is this thread which is kind of vague on the specifics.)

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  • Application Context in Rails

    - by Sean McMains
    Rails comes with a handy session hash into which we can cram stuff to our heart's content. I would, however, like something like ASP's application context, which instead of sharing data only within a single session, will share it with all sessions in the same application. I'm writing a simple dashboard app, and would like to pull data every 5 minutes, rather than every 5 minutes for each session. I could, of course, store the cache update times in a database, but so far haven't needed to set up a database for this app, and would love to avoid that dependency if possible. So, is there any way to get (or simulate) this sort of thing? If there's no way to do it without a database, is there any kind of "fake" database engine that comes with Rails, runs in memory, but doesn't bother persisting data between restarts?

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  • Flash video hiding the cursor on Mac OS X

    - by Tibor
    I found a Core Graphics function, CGCursorIsVisible, that one can use to determine whether the mouse cursor is shown on screen. I have a small app that uses a timer to call that function a few times a second to see if the cursor is shown or hidden (as I found no way to get my app notified when the mouse cursor shown/hidden status changes). The above works correctly except… when the Flash browser plugin plays a video: the mouse cursor gets hidden after a few seconds of mouse inactivity but CGCursorIsVisible() still keeps telling me that the cursor is indeed shown as if nothing happened. What I need is to be able to tell, at any given moment, whether the mouse cursor is shown to the end user on any screen. Is there any way to do that even in the case of playing a video using the Flash plugin?

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