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  • How to check server connection is available or not in android

    - by Kalai Selvan.G
    Testing of Network Connection can be done by following method: public boolean isNetworkAvailable() { ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo networkInfo = cm.getActiveNetworkInfo(); if (networkInfo != null && networkInfo.isConnected()) { return true; } return false; } But i don't know how to check the server connection.I had followed this method public boolean isConnectedToServer(String url, long timeout) { try{ URL myUrl = new URL(url); URLConnection connection = myUrl.openConnection(); connection.setConnectTimetout(timeout); connection.connect(); return true; } catch (Exception e) { // Handle your exceptions return false; } } it doesn't works....Any Ideas Guys!!

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  • Run a PHP-script from a PHP-script without blocking

    - by Nicklas Ansman
    I'm building a spider which will traverse various sites and data mining them. Since I need to get each page separately this could take a VERY long time (maybe 100 pages). I've already set the set_time_limit to be 2 minutes per page but it seems like apache will kill the script after 5 minutes no matter. This isn't usually a problem since this will run from cron or something similar which does not have this time limit. However I would also like the admins to be able to start a fetch manually via a HTTP-interface. It is not important that apache is kept alive for the full duration, I'm, going to use AJAX to trigger a fetch and check back once in a while with AJAX. My problem is how to start the fetch from within a PHP-script without the fetch being terminated when the script calling it dies. Maybe I could use system('script.php &') but I'm not sure it will do the trick. Any other ideas?

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  • jQuery UI Slider - Animation of handle and scroll content not in sync

    - by Mayko
    Im having troubles getting the jQuery UI Slider customized for my purposes. On load the slider and its content should automatically animate to a certain position. Ideally it should animate to the very right, then stop and then animate back (as a loop) as long as the user doesn't hovers over scroll content or slider. Following my default slider setup (http://jsfiddle.net/mayko/j6WuE/1/): var scrollbar = $("#slider").slider({ animate: 3000, min: 0, max: $("#timeline_content .items").width(), change: handleSlider, slide: handleSlider }); function handleSlider(e, ui) { $("#timeline_content").stop().animate({scrollLeft: ui.value}, scrollbar.slider("option", "animate")); } If i now try to set the value like this: $('#slider').slider({'value': 1000}); The scroll content nicely animates, but the handle just jumps to that new position. Even if I click on the slider track itself the animation of scroll content and slider handle are not in sync. Does anyone got a solution?

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  • Convert a Mysql database from latin to UTF-8

    - by Matthieu
    I am converting a website from ISO to UTF-8, so I need to convert the Mysql database too. On internet, I read various solutions, I don't know wich one to choose. Do I really need to convert my varchar columns to binary, then to utf8 like that : ALTER TABLE t MODIFY col BINARY(150); ALTER TABLE t MODIFY col CHAR(150) CHARACTER SET utf8; This is long to do that for each column, of each table, of each database. I have 10 database, wich 20 tables each, wich around 2 - 3 varchar colums (2 queries each column), this gives me around 1000 queries to write ! How come ? How to do ?

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  • Grails: Problem with nested associations in criteria builder

    - by Mr.B
    I have a frustrating problem with the criteria builder. I have an application in which one user has one calendar, and a calendar has many entries. Seems straightforward enough, but when I try to get the calendar entries for a given user, I can't access the user property (MissingMethodException). Here's the code: def getEntries(User user) { def entries = Entries.createCriteria().list() { calendar { user { eq("user.id", user.id) } } } } I have even tried the following variation: def getEntries(User user) { def entries = Entries.createCriteria().list() { calendar { eq("user", user) } } } That did not raise an exception, but didn't work either. Here's the relevant parts of the domain classes: class Calendar { static belongsTo = [user: User] static hasMany = [entries: Entries] ... } class User { Calendar calendar ... } class Entry { static belongsTo = [calendar: Calendar] ... } When Googling I came across a similar problem noted in early 2008: http://jira.codehaus.org/browse/GRAILS-1412 But according to that link this issue should have been solved long ago. What am I doing wrong?

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  • Performance Testing Versus Unit Testing

    - by Mystagogue
    I'm reading Osherove's "The Art of Unit Testing," and though I've not yet seen him say anything about performance testing, two thoughts still cross my mind: Performance tests generally can't be unit tests, because performance tests generally need to run for long periods of time. Performance tests generally can't be unit tests, because performance issues too often manifest at an integration or system level (or at least the logic of a single unit test needed to re-create the performance of the integration environment would be too involved to be a unit test). Particularly for the first reason stated above, I doubt it makes sense for performance tests to be handled by a unit testing framework (such as NUnit). My question is: do my findings / leanings correspond with the thoughts of the community?

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  • How do I prevent Eclipse from hanging on startup?

    - by Simon Nickerson
    I am using Eclipse 3.3 ("Europa"). Periodically, Eclipse takes an inordinately long time (perhaps forever) to start up. The only thing I can see in the Eclipse log is: !ENTRY org.eclipse.core.resources 2 10035 2008-10-16 09:47:34.801 !MESSAGE The workspace exited with unsaved changes in the previous session; refreshing workspace to recover changes. Googling reveals someone's suggestion that I remove the folder: workspace\.metadata\.plugins\org.eclipse.core.resources\.root\.indexes This does not appear to have helped. Short of starting with a new workspace (something which I am not keen to do, as it takes me hours to set up all my projects again properly), is there a way to make Eclipse start up properly?

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  • Reference methods defined in one JScript file from another JScript

    - by Thomas Svensen
    I am writing some server-side scripts using jscript and WSH. The scripts are getting quite long, and some common functions and variables would fit better in a general library script which I included in my various script instances. But, I cannot find a way reference one JScript file from another. For a moment, I though reading the file contents and passing it to "eval()" could work. But, as it says on MSDN: "Note that new variables or types defined in the eval statement are not visible to the enclosing program." (http://msdn.microsoft.com/en-us/library/b51a45x6.aspx) Is there any way to include/refence a JScript from another one?

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  • How to stop worker threads in a multithreaded Windows service on service stop

    - by RobW
    I have a Windows service that uses the producer/consumer queue model with multiple worker threads processing tasks off a queue. These tasks can be very long running, in the order of many minutes if not hours, and do not involve loops. My question is about the best way to handle the service stop to gracefully end processing on these worker threads. I have read in another SO question that using thread.Abort() is a sign of bad design, but it seems that the service OnStop() method is only given a limited amount of time to finish before the service is terminated. I can do sufficient clean-up in the catch for ThreadAbortException (there is no danger of inconsistent state) so calling thread.Abort() on the worker threads seems OK to me. Is it? What are the alternatives?

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  • Access restriction on class due to restriction on required library rt.jar?

    - by sal
    I'm attempting to compile Java 1.4 code that was created by IBM's WSDL2Java on Java5 without recreating the stubs and saw this error in Eclipse. I'm under the assumption that the stubs created should just compile as long as the runtime jars are available (they are). Access restriction: The type QName is not accessible due to restriction on required library C:\Program Files\Java\jdk1.5.0_16\jre\lib\rt.jar The full classname is javax.xml.namespace.QName What exactly is going on here? Is this a case where I am trying to refactor a pig from sausage? Am I better off recreating the stubs?

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  • UITableView resizing rows problem

    - by Vin
    Hi All, Hope to get solution to this problem. I have been stuck on it since a long time now. I have a a tableView which has custom labels drawn upon the cell using CGRect. I receive the data from a web service in arrays. Initially i display a line of data on the cells. When the user selects a cell, I call reloadsRowAtIndexPath to increase the height of selected row. In the process, cellForRowAtIndexPath gets called again. I keep track of this by a flag, and when cellForRowAtIndexPath gets called again, I display the two more lines of data from arrays, on the cell. What i am getting is all overlapping data on one other. I tried to remove already placed labels in didSelectRowAtIndexPath, but to no avail. Please help me on this Thanks in advance.

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  • Fleximage gem on Ruby 1.9

    - by jaycode
    Running a Rails application with Fleximage in Ruby 1.8.7 works fine, but in Ruby 1.9 returned error: /usr/local/lib/ruby/gems/1.9.1/gems/fleximage-1.0.4/lib/fleximage/model.rb:340: [BUG] Segmentation fault ruby 1.9.1p376 (2009-12-07 revision 26041) [i386-darwin10.0.0] -- control frame ---------- c:0060 p:---- s:0295 b:0295 l:000294 d:000294 CFUNC :read c:0059 p:0060 s:0291 b:0291 l:000290 d:000290 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/fleximage-1.0.4/lib/fleximage/model.rb:340 c:0058 p:0084 s:0285 b:0285 l:000275 d:000284 BLOCK /usr/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.5/lib/active_record/base.rb:2746 c:0057 p:---- s:0281 b:0281 l:000280 d:000280 FINISH c:0056 p:---- s:0279 b:0279 l:000278 d:000278 CFUNC :each And further very long line of error. My fleximage is stored as gem, keeping it as plugin returning a different set of errors so I don't bother. How to fix this?

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  • Starting a Blog using Microsoft.Net technologies

    - by manav inder
    I want to start a blog using Microsoft technologies. My primary reason is to get more in-sync with technologies which are very much in demand. It does not matter how steep is the learning curve as long I am willing to devote all the time in the world. There are lot going on like Microsoft WebAPI, Dot net nuke MVC SPA etc. Let me tell you what i know I have very good experience in developing database driven .net application using winforms and wpf. Average experience in asp.net and asp.net mvc. Good in entity framework, ado.net and wcf rest services. Good in IoC/DI.

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  • Test assembly code on a mac

    - by happyCoding25
    Hello, A while back I was following some tutorials an assembly. I was running it all on a windows machine, compiling with NASM and then writing the compiled code to a floppy disk, then reboot and try the code. This process was long and time consuming and sadly was not on a mac. When I found out that Xcode for mac installed NASM I immediately tried to compile some code. The code compiled fine. The issue is testing it. On a mac I have no floppy (not like I want to use one) so Im not sure how to test this. I looked in to Q (kju) and found it would only emulate things on an ISO file. So I guess what Im asking is is it possible to install the compiled code on an ISO file for testing? (Note: the code when compiled forms a .bin file) Thanks for any help

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  • Implementing a horizontal compass on the iPhone - algorithm?

    - by Andrew Johnson
    A horizontal compass looks something like this if you are facing due East (90 degrees). 85----90---95 If you were facing due 355 degrees northwest, it would look like this: 350----355---0 As you turn the compass, the number should cycle from 0 - 360 - 0 So, my question is, how would you implement a view like this on the iPhone? I had a couple of ideas: Make one long image with all numbers and tick marks, and shift it left/right when the compass heading changes Create pieces of the view as tiles and append them when the compass heading changes. Create a line of tick marks that shifts with the compass heading, and just write numbers on it as needed. How would you attack this problem? Im mainly looking for algorithmic advice, but if you ave code or pseudo-code to demonstrate, that would be helpful too.

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  • scvmap, disco, xsd, wsdl, svcinfo and datasource files

    - by David Gray Wright
    We have a WEb Service named, let's say Foo. So there is a Foo.svc file and a code behind Foo.svc.cs. We add a silverlight project and wish to use the Foo.svc services so we add a Service Reference and call it's namespace FooBar. This creates the following files : Reference.cs Reference.svcmap Foo.xsd Foo.disco configuration.svcinfo Foo.wsdl Also various *.datasource files. Over time we update the Foo.svc and add more Web Services (methods and interfaces) and the number of files in the FooBar directory is growing. I have 26 Foo(nn).xsd files in this directory - where nn = 1 to 26. My configuration.svcinfo is upto configuration91.svcinfo. My question is this? Do any of these files need to be version controlled? Can they all be deleted each time you do a build \ deploy (as long as you do an update service reference)?

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  • MinGW Doesn't Generate an Object File When Compiling

    - by Nathan Campos
    I've just bought a new laptop for me on the travel, then on my free time, I've started to test MinGW on it by trying to compile my own OS that is written in C++, then I've created all the files needed and the kernel.cpp: extern "C" void _main(struct multiboot_data* mbd, unsigned int magic); void _main( struct multiboot_data* mbd, unsigned int magic ) { char * boot_loader_name =(char*) ((long*)mbd)[16]; /* Print a letter to screen to see everything is working: */ unsigned char *videoram = (unsigned char *) 0xb8000; videoram[0] = 65; /* character 'A' */ videoram[1] = 0x07; /* forground, background color. */ } And tried to compile it with g++ G: g++ -o C:\kernel.o -c kernel.cpp -Wall -Wextra -Werror -nostdlib -nostartfiles -nodefaultlibs kernel.cpp: In function `void _main(multiboot_data*, unsigned int)': kernel.cpp:8: warning: unused variable 'boot_loader_name' kernel.cpp: At global scope: kernel.cpp:4: warning: unused parameter 'magic' G: But it don't create any binary file at C:/. What can I do?

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  • Kohana3 Route with Subdirectories in Controller Folder

    - by ahmet2106
    Hello everybody I'm using Kohana for so long, but the new Version is a litte bit other. My problem with an example: classes/ controller/ pages.php pages/ imprint.php I want to change my Route so, that if i call domain.tld/pages, the pages.php should called with action_index(). But if i call domain.tld/pages/imprint, pages/imprint.php should called with action_index() (and this should work too: pages/imprint/demo - action_demo() in pages/imprint.php) Tried this with bootstrap and http://kohanaframework.org/guide/api/Route this examples, but cant get it work. How can i make this? Any help? Thanks Closed: was my fault The Route::set('pages'...) must be before Route::set('default'...);

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  • is there any light weight javascript date picker

    - by Zain Shaikh
    I am using JQuery Date picker, but it is too much heavy, the minified version of ui.datepicker.min.js is of 44 KB. the images of datepicker have their own weigh. the jquery framework is of 59 KB. and total images on page are of around 80 KB the total html of page is around 70 KB and the css file size is around 72 KB. and much more, and all the things go upto 600 KB. which is 0.6 MB. do you think user will wait for 600 KB to be downloaded in the browser? it may take upto 8 - 10 secs. and I dont think that user will wait for such long time. I want to keep my website light weight. is there any light weight javascript date picker.

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  • PowerBuilder Indeterminate Progress Bar

    - by Adam Hawkes
    I have a somewhat-long-running stored procedure being called from a PB application. I want the UI to show an indicator that it is processing, but I don't know the exact progress. That is, I can't say whether it is 10% or 90% done. All I know is when it is done. To give the user something to look at I'd like to put a "Inderterminate" (horizontal) progress bar on the window somewhere. I've looked at the documentation for the built-in HProgressBar control and don't see how to force this behavior. Short of writing my own control or importing another one, is there a way to accomplish this?

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  • Hudson leaving open sessions

    - by James Carr
    Does anyone have any experiences with Hudson leaving sessions open to a Subversion server? We've been increasing our job list and got ~50 which poll the SCM regularly. It's been working fine but recently our SCM has started acting up by refusing handshakes, which we suspect is down to the sessions left open by Hudson. Last count there were ~400 sessions with nothing building on Hudson. At the moment the only solution we've found is restarting the Subversion service but this is becoming increasingly frequent and not a long term solution. Any experiences/ideas would be appreciated.

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  • Using Bookmarklet to open and pass values from Parent and Child Window

    - by kunalsawlani
    Hi, Is there a way to open a window from the current page using a javascript bookmarklet, and once the the child window has finished loading, setting the value of one of the elements in its DOM to some value from the current page, say for example the currently selected text. I know that this can be done in plane javascript, and also, by appending the value to the URL, and reading it from the web service opened in the new child window. I want to know if there is any other way, as the appending URL method does not let you send text more than two thousand odd characters long. Appreciate any help I can get!

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  • Ruby from the command line - sticking - Windows

    - by tyndall
    I have seen this behavior on Windows with Ruby for a long time. If I install a gem sometimes the command line will just get "lost" and stop printing output until you go back to the command line and hit enter a few times. I notice this in other places too. Like starting up a Ruby on Rails console. Or generating a model with Rails. Have other people seen this? What causes this? The weird thing is this doesn't happen all the time. I have never seen this with PHP, Lua, Perl or Python from the command line. I have seen this on Vista and Windows 7 (32-bit and 64-bit). This happens on multiple machines.

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  • ruby rails loop causes server freeze

    - by Darkerstar
    Hi all: I am working on a Ruby on Rails project on Windows. I have Ruby 1.86 and Rails 2.35 installed. Everything is fine until I tried to implement a comet process. I have the following code written to respond to a long poll javascript request. But everytime this function is called, it will hang the whole rails server, no second request can get in, until the timeout. (I know there is juggernaut, but I like to implement one myself first :) Is this due to my server setup? The project will be deployed on a linux server with Ngix and Passenger setup, will it suffer the same problem? def comet_hook timeout(5) do while true do key = 'station_' + station_id.to_s + '_message_lastwrite' if Rails.cache.exist?(key) @cache_time = DateTime.parse(Rails.cache.read(key)) if @cache_time > hook_start @messages = @station.messages_posted_after(hook_start) hook_start = @cache_time break end end end ... end Also with Rails memory store cache, I keep getting "cannot modify frozen object" error, so the above script only worked for me when I switched to File cache. :(

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  • Embed a Python persistance layer into a C++ application - good idea?

    - by Rickard
    say I'm about to write an application with a thin GUI layer, a really fat calculation layer (doing computationally heavy calibrations and other long-running stuff) and fairly simple persistance layer. I'm looking at building the GUI + calculation layer in C++ (using Qt for the gui parts). Now - would it be a crazy idea to build the persistance layer in Python, using sqlalchemy, and embed it into the C++ application, letting the layers interface with eachother through lightweigth data transfer objects (written in C++ but accessible from python)? (the other alternative I'm leaning towards would probably be to write the app in Python from the start, using the PyQt wrapper, and then calling into C++ for the computational tasks) Thanks, Rickard

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