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  • Rolling back a transaction in a Grails Service

    - by UltraVi01
    I have been updating all my services to be transactional by using Grail's ability to rollback when a RuntimeException is thrown in the service. I have, in most cases, doing this: def domain = new Domain(field: field) if (!domain.save()) { throw new RuntimeException() } Anyways, I wanted to verify that this indeed will rollback the transaction... it got me thinking as to whether at this point it's already been committed.. Also, if not, would setting flush:true change that? I am not very familiar with how Spring/Hibernate does all of this :)

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  • The server method xxx failed (asp.net ajax)

    - by vikasde
    I have a website project, that is working fine. However every once a while certain ajax pages (that make calls to a webservice) throw a "the server method xxx failed". I have ELMAH installed, however do not see any stacktrace or anything. The worst is that I can not reproduce the error locally. I just get an email notification from ELMAH. Does anybody know how I can fix this issue?

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  • Nested if statements or not

    - by Zaps
    Hi, I hope this hasn't been asked before. I have a nullable boolean called boolIsAllowed and a if condition like so: if(boolIsAllowed.HasValue && boolIsAllowed.Value) { //do something } My question is this good code or would I be better separating it into a nested if statement? Will the second condition get checked if boolIsAllowed.HasValue is equal to false and then throw an exception? I hope this question is too stupid. Thanks in advance.

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  • Sun App Server Deployment Error

    - by Nick Long
    Sun App Server Deployment : When choose to precompile JSP : Throw this error com.sun.enterprise.admin.common.exception.MBeanConfigException: Component not registered then have to do asadmin undeploy Anyone know what is the reason for this error?

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  • Getting IBindingList Property to sort by

    - by Josh
    I've got a class called DatagridBoundList that implements CollectionBase and IBindingList. The implementation of IBindingList.ApplySort looks like this so far: void IBindingList.ApplySort(PropertyDescriptor property, ListSortDirection direction) { throw new NotSupportedException(); } I'm binding the DatagridBoundList to a DataGridView (winforms). When I reflect over the property parameter, I can't seem to find the name of the actual property that the list needs to be sorted by. What's the trick to finding out the name of the property to sort by?

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  • jQuery grab html

    - by Happy
    We have link to some page (with html code, on the same domain), that page have one img, which attributes title and alt are equal. Script must open link (no showing on the page), grab the src attribute of img which title=alt, and throw the value into some variable. Is it possible to do? Thanks.

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  • What's the scope of a Python variable declared in an if statement?

    - by froadie
    I'm new to Python, so this is probably a simple scoping question. The following code in a Python file (module) is confusing me slightly: if __name__ == '__main__': x = 1 print x In other languages I've worked in, this code would throw an exception, as the x variable is local to the if statement and should not exist outside of it. But this code executes, and prints 1. Can anyone explain this behavior? Are all variables declared in a module global/available to the entire module?

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  • UnsupportedOperationException on Collection

    - by Duke Vador
    While studying the Collection API, we find that some methods (add, remove,...) may throw a java.lang.UnsupportedOperationException if the current implementation of the Collection does not support those functionalities. Is there,actually, in the JDK, a concrete Collection that does not support those methods ? Thanks a lot for your answers.

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  • Cache headers in Rails

    - by Dimitar Vouldjeff
    Hi, I`m trying to add cache headers on my static files (.css, .js), but only way I found is with some .htaccess stuff that make the page to throw 500 error. So my question is whether there is easier way to add those headers? Thanks in advance.

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  • implementation of a queue using a circular array

    - by matin1234
    Hi I have found these algorithms in the internet but I can not understand that why in the enqueue method we compare size with N-1??? please help me thanks!! Algorithm size(): return (N-f+r)mod N Algorithm enqueue(e): if size()=N-1 then throw a FullQueueException Q[r]<---e r<----(r+1)mod N

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  • jQuery find by value

    - by Happy
    There is a link with title and some value: <a href="http://site.com/someid/" title="Use ctrl + >">next</a> How to find this link and throw its href attribute to some variable?

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  • handling javaScript alerts when running a selenium test?

    - by Mo
    Hi I am am running some selenium tests(ruby) on my web page and as i enter an invalid characters in to a text box i have the JavaScript throw a alert like so if(isNaN($(this).val()) || Number($(this).val().valueOf() <=0)){ alert("Please Enter A Number"); } how can i handle this alert when its made and close the pop up? i tried to use the wait_for_pop_up() and close() but i think that's only for browser pop up's and not JavaScript alerts. any ideas? thanks

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  • Exception when access inner class reflectively

    - by MikeJiang
    Hi Folk, Here is a sample java program. I wonder why the two approaches reslut different stories. Is it a bug or kind of bitter java feature? And I run the sample upon java 1.5 package test; public class TestOut{ public static void main(String[] args){ new TestIn();//it works Class.forName("test.TestOut$TestIn").newInstance();// throw IllegalAccessException } private static class TestIn{} }

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  • javascript instanceof get type from string name

    - by dcp
    Let's say I have this (assume the name variable is "receiver"): if (!(receiver instanceof com.HTMLReceiver)) { throw new com.IllegalArgumentException( name + " is not an instance of com.HTMLReceiver."); } I'd like to factor this code out into a common method so I could call it like this: Helper.checkInstance(receiver, "com.HTMLReceiver"); But I don't know of a way to convert the com.HTMLReceiver from a string to its actual type so I can use instanceof on it. Is there a way?

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  • Some problem with postgres_psycopg2

    - by aatifh
    Last night I upgraded my machine to Ubuntu 10.04 from 9.10. It seems to have cluttered my python module. Whenever I run python manage.py I get this error: ImportError: No module named postgresql_psycopg2.base Can any one throw any light on this?

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  • How can I break if gdb is attached, but continue if it is not?

    - by Michael Anderson
    I have some debugging code that if executed while running with GBD attached should break the execution of the application, but if GDB is not running it should continue. The code I'm working with looks something like this in structure: try { if( some_complex_expression ) { gdb_should_berak_here(); do_some_stuff(); throw MyException(); } } catch( const MyException & e ) { handle_exception_and_continue(); } What should gdb_should_break_here be?

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  • post object to wcf rest service

    - by gleasonomicon
    I'm using the WCF Rest service application project template in visual studio. I'm just learning about REST, and I was wondering how I would post a SampleItem object to the following method: [WebInvoke(UriTemplate = "", Method = "POST")] public SampleItem Create(SampleItem instance) { // TODO: Add the new instance of SampleItem to the collection throw new NotImplementedException(); } I get the general concepts of gets for the purposes of grabbing data, but I'm not sure how I would post the object in code (or just through a browser for testing) to the service.

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  • Check constraint over two columns

    - by Rippo
    I want to add a Check Constraint to a table for server 2005 but cannot work it out. MemberId ClubId MeetingId 1 100 10 2 100 10 3 100 10 7 101 10 <-This would throw a check constraint 1 100 11 2 100 11 I do not want to have more than one ClubId for a single MeetingId Basically a ClubId can only belong to a single MeetingId but can have more than one member assigned. How do I achieve this?

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  • in c# are methods private by default?

    - by Eli Perpinyal
    If I have a method that does not specify its Accessibility Level will it be Private by default? void Item_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e) { throw new NotImplementedException(); } Is the above method private?

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  • How to merge JOptionPane and Frame into one

    - by mike_hornbeck
    Hello. Currently I have a very basic file viewer working as follows : - in JOptionPane I browse for files, and set some variables to display (colors, line connecting etc) - previous windows loads a frame with drawn points Code : http://paste.pocoo.org/show/220066/ Now I'd like to throw it into one window, with JMenu for selecting files and changing display parameters. How to get started ? Should I rewrite everything to JDialog ?

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  • How to find if the file is a CSV file?

    - by Mithun
    I have a scenario wherein the user uploads a file to the system. The only file that the system understands in a CSV, but the user can upload any type of file eg: jpeg, doc, html. I need to throw an exception if the user uploads anything other than CSV file. Can anybody let me know how can I find if the uploaded file is a CSV file or not?

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