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• How to make/monitor/deploy daemon processes in JRuby

  - by nazdrug

  I'm currently porting a Rails App currently using REE to JRuby so I can offer an easy-to-install JRuby alternative. I've bundled the app into a WAR file using Bundler which I'm currently deploying to GlassFish. However, this app has a couple of daemon processes and it would be ideal if these could be part of the WAR file, and potentially monitored by Glassfish (if possible). I've looked at QuartzScheduler, and while meets my needs for a couple of things, I have a daemon process that must execute every 20 seconds as it's polling the database for any delayed mail to send. If anyone can provide any insight as to how best to set up daemon processes in a JRuby/Java/Glassfish environment any help will be greatly appreciated! :)

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• Open application with lowered privileges

  - by GP89

  I have a mac installer which runs as root with pre and post install bash scripts. At the end of the post install script I launch the application which inherits and opens as root. Is there a way I can lower the permissions back down to the user that ran the installer and then open the app? Or a more hackish way I can set the app to open in some scheduler from the script, which then gets opened by the scheduler which would have the users permissions

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• Deploying backing bean with composite component in separate jar

  - by Checkoff

  I have some difficulties deploying my web app on JBoss AS 6.1. My current Project is separated into the main web app (controller/managed beans & web frontend using JSF 2 facelets) and one jar with the composite components + backing beans. But when I try to access the page I got an error that the specified component type could not be instantiated. Copying the backing bean into the main web app solves the problem, but this isn't what I want. So is there anything to pay attention to? The backing bean looks like @FacesComponent(value = "elementBase") public class ElementBase extends UINamingContainer { ... } and the composite components interface <composite:interface componentType="elementBase"> ... some attributes </composite:interface> The structure of the jar is the following -- META-INF |-- resources | |-- components | |-- elementBase.xhtml -- com |-- example | |-- ElementBase.class I've also tried to add faces-config.xml within META-INF folder, with the component type, but the component type was still not found.

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• Allow for modular development while still running in same JVM?

  - by Marcus

  Our current app runs in a single JVM. We are now splitting up the app into separate logical services where each service runs in its own JVM. The split is being done to allow a single service to be modified and deployed without impacting the entire system. This reduces the need to QA the entire system - just need to QA the interaction with the service being changed. For inter service communication we use a combination of REST, an MQ system bus, and database views. What I don't like about this: REST means we have to marshal data to/from XML DB views couple the systems together which defeats the whole concept of separate services MQ / system bus is added complexity There is inevitably some code duplication between services You have set up n JBoss server configurations, we have to do n number of deployments, n number of set up scripts, etc, etc. Is there a better way to structure an internal application to allow modular development and deployment while allowing the app to run in a single JVM (and achieving the associated benefits)?

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• Grails: Querying Associations causes groovy.lang.MissingMethodException

  - by Paul

  Hi, I've got an issue with Grails where I have a test app with: class Artist { static constraints = { name() } static hasMany = [albums:Album] String name } class Album { static constraints = { name() } static hasMany = [ tracks : Track ] static belongsTo = [artist: Artist] String name } class Track { static constraints = { name() lyrics(nullable: true) } Lyrics lyrics static belongsTo = [album: Album] String name } The following query (and a more advanced, nested association query) works in the Grails Console but fails with a groovy.lang.MissingMethodException when running the app with 'run-app': def albumCriteria = tunehub.Album.createCriteria() def albumResults = albumCriteria.list { like("name", receivedAlbum) artist { like("name", receivedArtist) } // Fails here maxResults(1) } Stacktrace: groovy.lang.MissingMethodException: No signature of method: java.lang.String.call() is applicable for argument types: (tunehub.LyricsService$_getLyrics_closure1_closure2) values: [tunehub.LyricsService$_getLyrics_closure1_closure2@604106] Possible solutions: wait(), any(), wait(long), each(groovy.lang.Closure), any(groovy.lang.Closure), trim() at tunehub.LyricsService$_getLyrics_closure1.doCall(LyricsService.groovy:61) at tunehub.LyricsService$_getLyrics_closure1.doCall(LyricsService.groovy) (...truncated...) Any pointers?

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• Cocoa accessibility API, can I click a window in the background without activating it?

  - by Winawer

  I've been searching forever for a solution to this, so I thought I'd seek out the brainpower of greater minds than mine. I'm developing a Cocoa app that uses the Accessibility API to manipulate another program (it's a hotkey app). The app I'm controlling typically has multiple windows open, with some hidden behind others. What I would like to do, if it's possible, is to send mouse events to windows using the Accessibility API in a way that presses a button in the window without bringing it to the foreground (interact with the window but don't activate it). The reason I'm trying to do this is that sending the mouse event to this other window will force it to the foreground and disrupt the user's interaction with the foremost window. This is possible on Windows - apparently, because apps similar to mine do it there - but I'm getting the feeling that this isn't possible with Cocoa, given the way the window manager works. Am I mistaken?

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• Public static variables and Android activity life cycle management

  - by jsstp24n5

  According to the documentation the Android OS can kill the activity at the rear of the backstack. So, say for example I have an app and open the Main Activity (let's call it Activity A). In this public activity class I declare and initialize a public static variable (let's call it "foo"). In Activity A's onCreate() method I then change the value of "foo." From Activity A the user starts another activity within my app called Activity B. Variable "foo" is used in Activity B. Activity B is then paused after the user navigates to some other activities in other apps. Eventually, after a memory shortage occurs, Activity A then Activity B can be killed. After the user navigates back to my app it restarts (actually "recreates") activity B. What happens: 1) Will variable "foo" at this point have the value that was set to it when Activity A's onCreate() method ran? 2) Variable "foo" does not exist? 3) Variable "foo" exists and but is now the initialized value and not the value set in Activity A's onCreate() method?

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• Why can't untrusted code change the log level under Java Logging?

  - by cdmckay

  I'm have a Java app that also runs as an applet. The app also happens to use a library called BasicPlayer to play .ogg files. BasicPlayer has a built-in logger that uses Apache Logging Commons to create a logger for BasicPlayer.class using the built-in Java logger. The only way that I know about to turn off the BasicPlayer logging is to run this code: Logger.getLogger(BasicPlayer.class.getName()).setLevel(Level.OFF); This works fine when running as a regular app. However, when running as an applet, this code will throw a SecurityException because for some reason applets can't change the log level of non-anonymous loggers (see here for a sorta-explanation). Why would they do this? Who cares if an applet changes the log level?

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• Disabling multitasking on iPhone 3GS using UIApplicationExitsOnSuspend not working

  - by NobleK

  Hello I am developing an iPhone app where I don’t want/need the multitasking capability and I want my app to initiate every time I open it. I have set the UIApplicationExitsOnSuspend property in the info.plist and it does work when I test it on my iPhone 4 and in the simulator (which is also an ”iPhone 4”). The app calls applicationDidEnterBackground followed by applicationWillTerminate. However, when testing it on my wifes iPhone 3GS the property seems to be completely ignored and the program gets suspended/resumed. Both phones are running iOS 4.2.1. Someone has also confirmed this issue in another thread, with no solutions unfortunately: iPhone: how to test if UIApplicationExitsOnSuspend is working? Is there something I am missing to make this work? Any other ways to accomplish this? Thanx in advance

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• Solution: Android INSTALL_FAILED_INSUFFICIENT_STORAGE error.

  - by Andrew Smith

  The INSTALL_FAILED_INSUFFICIENT_STORAGE error is the bane of every Android developer's life. It happens regardless of app size, or how much storage is available. Rebooting the target device fixes the problem briefly, but it soon comes back. There are hundreds (if not thousands) of message board posts from people asking why the problem occurs, but the folks at Google are frustratingly silent on the issue. There is a simple workaround. If your test device is running Android 2.2 or later then add the android:installLocation attribute to your application's manifest file, with the value "preferExternal". This will force the app to be installed on the device's external storage, such as a phone's SD card. For example: <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.andrewsmith.android.darkness" android:installLocation="preferExternal" This is more of a band-aid than a fix, and it may not be ideal if you want your finished app to install on the device's internal memory. But it will at least make the development process a lot less frustrating.

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• Lightweight PHP library alternative to common MVC frameworks

  - by artarad

  Hi hi, I'm looking for a easy to learn php library to use for my coming web app project. I've recently finished a web app with fully handwritten raw php code and it's absolutely hard to be done again for another project. even though I have the recent project code snippets to be used again, but due to their non-structural arrangement (not object oriented), i have no passion to use 'em again. I have no experience with common frameworks like ZF, CakePhp, CodeIgniter, so I think to get my hands on a multipurpose OO library for my web app and the framework learning will be the next step! any suggestion? UPDATE: Many thanks guys, I have not enough time to get through the depth of every lib or framework you have kindly introduced. Since I'm going one step further I'm going to use ZF as famous framework which could provide me more job opportunities perhaps. thankssss :)

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• Configurator Scan not picking up views

  - by mxmissile

  New to Py and Python. I'm trying to get pyramid Configurator scan to find my views, but I seem to be missing something, it's not picking up my "view" index here are my files: app.py from wsgiref.simple_server import make_server from pyramid.config import Configurator if __name__ == '__main__': config = Configurator() config.add_route('home', '/') config.scan() app = config.make_wsgi_app() server = make_server('0.0.0.0', 6543, app) server.serve_forever() and index.py from pyramid.view import view_config from pyramid.response import Response @view_config(route_name='home') def index(request): print'Incoming request' return Response('<body><h1>Home</h1></body>') Its returning a 404. However, if I remove config.scan() and add the view manually it works fine. from wsgiref.simple_server import make_server from pyramid.config import Configurator from index import index if __name__ == '__main__': config = Configurator() config.add_route('home', '/') config.add_view(index, route_name='home')

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• How do i connect with dart community to suggest something

  - by Muhammad Umer

  I am new to this stackoverflow and programming. So HI!!!! What i hope to do is tell something that i think is important to Dart community. If somehow it was possible to code android and or iphone apps using dart that would be very awesome and same for Dart.... There is one path, that is making program in dart compiling it to javascript and then making app using Adobe air..... .But looks inefficient. so is there any other way which i am unaware of, via which i can build an android app at least.. using dart i know you can build an app, using javascript..and css+html...so i am looking for html+css+dart. It'd be cool if adobe air supports dart language directly.

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• Free Android media player with gapless playback [closed]

  - by fconolly

  As the title states; The Music app for the HTC Hero is pretty terrible. By biggest gripe is when playing my mixes it sticks a .5 second gap between each track :( Can anyone suggest an app for Android that featureless gapless segue between audio tracks...

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• Activity: from home screen launch or back from the stack

  - by David

  How can I determine if my main/launcher activity has been invoked from the home screen or by backing up the activity stack? I display a splash screen and would only like to show it when a user has arrived there from the home screen.

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• Editing the registry entry to have Citrix call the local install of an application

  - by jrembold

  We use Citrix to access an app (APP1) remotely. As it currently stands, when APP1 needs to do a merge document, it calls a session of another app (APP2) from the Citrix server. However, due to latency issues, we now want APP1 to call a local version of APP2. This is controlled in the registry entry for APP1. I'm wondering what kind of path entry would need to be made so that APP1 would call the local APP2 while following the rules of the Citrix profile.

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• Can Windows Mobile Synch Services use a business layer

  - by Andy Kakembo

  We're building a Win Mobile 6 warehouse app which needs to update our server based corporate DB. We've got a C# business layer that sits on our app server and we'd really like our warehouse app to go through this. We also like MS Synch Services. Is there a way to combine the two ie can we use sync services but get them to go through our business layer ? Has anyone done this and got an example I can follow ? Is there a best practice for this kind of scenario ? Thanks, Andy

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• Determine if on product page programmatically in Magento

  - by dfondente

  I want to insert tracking codes on all of the pages of a Magento site, and need to use a different syntax if the page is a CMS page, a category browsing page, or a product view page. I have a custom module set up with a block that inserts a generic tracking code on each page for now. From within the block, how can I distinguish between CMS pages, category pages, and product pages? I started with: Mage::app()->getRequest(); I can see that Mage::app()->getRequest()->getParam('id'); returns the product or category ID on product and category pages, but doesn't distinguish between those page types. Mage::app()->getRequest()->getRouteName(); return "cms" for CMS pages, but returns "catalog" for both category browsing and product view pages, so I can't use that to tell category and product pages apart. Is there some indicator in the request I can use safely? Or is there a better way to accomplish my goal of different tracking codes for different page types?

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• Why would bytesTotal increase in a AS3 preloader?

  - by justkevin

  I'm creating a custom preloader for a Flex app and have noticed the following behavior: when loading, the progress bar goes to 100%, then down then back up, and so on until the app is finished loading. When I put a trace in the dowloadprogress listener, I see that while the app is loading, both bytesLoaded and bytesTotal increase, but not necessarily at the same time. Code: private function onDownloadProgress(event:ProgressEvent):void { var loaded:int = event.bytesLoaded; var total:int = event.bytesTotal; trace(event.target,loaded,total); _starfield.progress = loaded/total; } Output: [object Preloader] 134276 134276 [object Preloader] 265348 285007 [object Preloader] 285007 285007 [object Preloader] 678223 1322116 [object Preloader] 809295 1322116 [object Preloader] 1322116 1322116 [object Preloader] 1322116 1322116 [object Preloader] 1387652 1584342 [object Preloader] 1791882 1791882 [object Preloader] 2293133 2293133 [object Preloader] 2362938 2362938 [object Preloader] 2362938 2362938 [object Preloader] 2362938 2362938 Why does bytesTotal change during load?

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• Different PATH environment variable for 32bit and 64bit Windows - is it possible?

  - by Piotr Dobrogost

  Is it possible to have whole or part of PATH environment variable specific to the type of running process's image (32bit/64bit)? When I run some app from within 64bit cmd.exe I would like to have it pick the 64bit version of OpenSSL library whereas when I run some app from within 32bit cmd.exe I would like to have it pick the 32bit version of OpenSSL library. FOLLOW UP where.exe does not find OpenSSL libs when %ProgramFiles% variable is used in the PATH environment variable

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• Console Utility that can remote connect to other systems and issue commands

  - by vivekeviv

  Hi Frequenlty my work involves to VNC to a remote system and work on it. SInce i run command line apps on this remote system most of the time, i was wondering if there's an alternative software to command prompt which i could install on my local machine. Using this i should be able to create a session with the remote system and from then on all commands issued in command prompt should run in remote system. localHostdir -- should list the directory contents in remotehost active directory localhostapp.exe should run app.exe in remote host and display its contents in localhost command prompt I browsed a little and read about cmdlets in powershell. But it looks like i need to write a cmdlet for each app in the path (dir, mkdir, app.exe in the path). Correct me if am wrong. Once session is established, i simply need the commands invoked in local host to be run in the remote host and return the console output to local host. Please let me know if powershell + cmdlets are the only way THanks

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• Replicating iPhone Calendar View Lame?

  - by John Wright

  I am building an iPhone app that will need to display info primarily in a calendar view. Users will need to be able to search for entries and view them by day, month or in a list view. It seems like the built-in calendar type interface is ideal for my app. So I could build a similar calendar with 3 buttons at the bottom for list/day/month view as well as a button for today, in short a very similar interface to the built in iPhone calendar with different colors primarily. However, if I replicate it am I a) a lame copycat for replicating the built-in interface or smart for using a well-known iPhone metaphor and b) in danger of having my app rejected?

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• Manually force touch points to reset in Windows 8?

  - by loyalpenguin

  Hi I developed a HTML5/JAVASCRIPT app that is supported using advertisement for the Win8 store. I just by chance happened to notice that if you touch the screen, drag your finger over the advertisement, and release your finger on top of the advertisement that the specific touch is not released and instead when you touch again it registers as a separate touch. This has caused my app to behave expectantly when the user interacts with the app using touch. I wanted to know if it was possible to force the touches to reset so that when the user touches the screen again it is always using "Touch(0)".

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• Best cheap GUI for converting to f4v

  - by Ben

  Hi, I need to give one client the ability to convert some videos to f4v h264 before loading it up to an AIR app. I normally doing with the Adobe Media Encoder CS4 but that only ships with adobe products (you can't download it as a free standalone app - which, start rant is odd, you'd think they would push the format - Microsoft's competing expresssion encoder is free end rant) Anyway, I need to get a (hopefully not too expensive, but willing to pay for it) good 3rd part app that can take any video and convert it to an f4v. Can you suggest any? Everything i've found is horrible or jammed with ads and crap. What would you use? Any suggestion? (please don't just say ffmpeg - I know it can do it but we need to good simple GUI) Thanks!

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• How can I tell Phusion Passenger which python to use?

  - by Mike

  I'm using Phusion Passenger with a ruby app and I'd also like to set it up to work with an django appengine app I'm working on. Googling for "passenger_wsgi.py" I was able to get the following very simple non-django app working on passenger: passenger_wsgi.py: def application(environ, start_response): response_headers = [('Content-type','text/plain')] start_response('200 OK', response_headers) return ['Hello World!\n'] However, if I add the line import django.core.handlers.wsgi into the mix, I get 'An error occurred importing your passenger_wsgi.py'. By printing out the sys.path I've discovered that at least part of the reason is because Passenger is using the wrong python installation on my machine. How can I configure Passenger (on apache) to use /opt/local/bin/python2.5 instead of the system default python?

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