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• android.app.Application subclass, onTerminate is not being called

  - by synic

  From the documentation for android.app.Application: "Base class for those who need to maintain global application state" I am using my own subclass to maintain an object that I'm using to query a server. Also from the documentation: "onTerminate() Called when the application is stopping." However, onTerminate() in my class is never called. I press the back button while viewing my main activity, and everything seems to shut down. My main Activity's onDestroy() method is called and isFinishing() returns true, but my android.app.Application's onTerminate() method is never called. Why is this? What am I missing? Is there something that is keeping it open?

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• Google App Engine (python): TemplateSyntaxError: 'for' statements with five words should end in 'rev

  - by Phil

  This is using the web app framework, not Django. The following template code is giving me an TemplateSyntaxError: 'for' statements with five words should end in 'reversed' error when I try to render a dictionary. I don't understand what's causing this error. Could somebody shed some light on it for me? {% for code, name in charts.items %} <option value="{{code}}">{{name}}</option> {% endfor %} I'm rendering it using the following: class GenerateChart(basewebview): def get(self): values = {"datepicker":True} values["charts"] = {"p3": "3D Pie Chart", "p": "Segmented Pied Chart"} self.render_page("generatechart.html", values) class basewebview(webapp.RequestHandler): ''' Base class for all webapp.RequestHandler type classes ''' def render_page(self, filename, template_values=dict()): filename = "%s/%s" % (_template_dir, filename) path = os.path.join(os.path.dirname(__file__), filename) self.response.out.write(template.render(path, template_values))

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• ASP.NET MVC Response Filter + OutputCache Attribute

  - by Shane Andrade

  I'm not sure if this is an ASP.NET MVC specific thing or ASP.NET in general but here's what's happening. I have an action filter that removes whitespace by the use of a response filter: public class StripWhitespaceAttribute : ActionFilterAttribute { public StripWhitespaceAttribute () { } public override void OnResultExecuted(ResultExecutedContext filterContext) { base.OnResultExecuted(filterContext); filterContext.HttpContext.Response.Filter = new WhitespaceFilter(filterContext.HttpContext.Response.Filter); } } When used in conjunction with the OutputCache attribute, my calls to Response.WriteSubstitution for "donut hole caching" do not work. The first and second time the page loads the callback passed to WriteSubstitution get called, after that they are not called anymore until the output cache expires. I've noticed this with not just this particular filter but any filter used on Response.Filter... am I missing something? I also forgot to mention I've tried this without the use of an MVC action filter attribute by attaching to the PostReleaseRequestState event in the global.asax and setting the Response.Filter value there... but still no luck.

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• Is there a complete working example of a unit tested JPA2/CDI/JSF2 WebApp without EJBs ?

  - by Maxime ARNSTAMM

  Hello everyone, I want to build a web app in JPA2/CDI (without EJBs) and i get how to code the different beans (i worked for some time on seam/jpa apps), but i'm stuck because i can't find a complete working set of configuration files (ie : persistence.xmln web.xml and stuff), and there is always a little glitch or something i miss. My goal is to develop a simple CRUD (1 or 2 pages) but unit tested, for future use, as a code base. So if you already did this kind of mini project, or if you know where i can find a working example, that would be great if you could help me. Thanks

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• Rails single table inheritance/subclass find condition in parent

  - by slythic

  Hi all, I have a table called Users (class User < ActiveRecord::Base) and a subclass/STI of it for Clients (class Client < User). Client "filtering" works as expected, in other words Client.find(:all) works to find all the clients. However, for users I need to filter the result to only find users that are NOT clients (where type is null or blank). I've tried the following in my index controller but no matter what I put for the type it returns all users regardless of type. User.find(:all, :conditions => { :type => nil }, :order => 'name') Any clue on how to get this condition to work? Thanks!

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• NDepend query methods/types in framework assembly being used by other assemblies/types

  - by icelava

  I am trying to determine which types or methods in a base framework assembly are being used by other assemblies in the application system. I cannot seem to find a straight-cut query to do that. What i have to do is first determine which assemblies are directly using the framework assembly, then manually list them in a second query SELECT TYPES FROM ASSEMBLIES "IBM.Data.DB2" WHERE IsDirectlyUsedBy "ASSEMBLY:FirstDirectUsedByAssebmly" OR IsDirectlyUsedBy "ASSEMBLY:SecondDirectUsedByAssebmly" OR IsDirectlyUsedBy "ASSEMBLY:ThirdDirectUsedByAssebmly" OR IsDirectlyUsedBy "ASSEMBLY:FourthDirectUsedByAssebmly" Is there a better/faster way to query for this? Additionally, the query results are focused on the matched types only. The Dependency graph or matrix exported only shows details of those. I do not know how to render a graph that shows those types or methods plus show the dependent types/methods from other assemblies that are consuming them?

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• Using SqlBulkCopy in a multithread scenario with ThreadPool issue

  - by Ruben F.

  Hi. I'm facing a dilemma (!). In a first scenario, i implemented a solution that replicates data from one data base to another using SQLBulkCopy synchronously and i had no problem at all. Now, using ThreadPool, i implemented the same in a assynchronously scenario, a thread per table, and all works fine, but past some time (usualy 1hour because the operations of copy takes about the same time), the operations sended to the ThreadPool stop being executed. There are one diferent SQLBulkCopy using one diferent SQLConnection per thread. I already see the number of free threads, and they are all free at the begining of the invocation...I have one AutoResetEvent to wait that the threads finish their job before launching again, and a Semaphore FIFO that hold the counter of active threads. There are some issue that I have forgotten or that I should avaliate when using SqlBulkCopy? I apreciate some help, because my ideas are over;) Thanks

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• How to make my iPhone app compatible with iOS 4?

  - by Davide

  Hello, My iphoneos 3.1 based application is not working on iOS 4 GM: the camera is not showing in full screen, it doesn't correctly detects compass information, the uiwebviews doesn't respond to touches (they don't scroll), and so on. It's completely broken! Now my question is: how can I develop an update using the latest xcode with support for ios 4? The latest iOS 4 xcode (3.2.3) doesn't provide any way to develop for iPhoneOS 3.x ("base sdk missing"). By the other side, xcode 3.2.2 would not allow me to debug it on a iOS 4 device, so I can't test it.

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• Problem creating ObjectContext from different project inside solution.

  - by Levelbit

  I have two projects in my Solution. One implements my business logic and has defined entity model of entity framework. When I want to work with classes defined within this project from another project I have some problems in runtime. Actually, the most concerning thing is why I can not instantiate my, so called, TicketEntities(ObjectContext) object from other projects? when I catch following exception: The specified named connection is either not found in the configuration, not intended to be used with the EntityClient provider, or not valid. I found out it's brake at: public partial class TicketEntities : global::System.Data.Objects.ObjectContext { public TicketEntities() : base("name=TicketEntities", "TicketEntities") { this.OnContextCreated(); } with exception: Unable to load the specified metadata resource. Just to remind you everthing works fine from orginal project.

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• How to test rails ETag caching?

  - by ifesdjeen

  Hi, Is it possible to cover my controller, that is highly depeinding on Etags with unit tests? Here's what i'm trying to do: in case if page is not stale (meaning that it's fresh), i'm adding some header to response. When i'm trying to test it all (rspec), no matter how many similar requests i have, i still receive 200 OK instead of 304, and my header doesn't get modified. Furthermore, if i track request.fresh?(response), it's ALWAYS false. However, it perfectly works in browser. I've already tried to state ActionController::Base.perform_caching = true, it doesn't change the overall situation. Thank you

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• OpenGL Game development for the Desktop / Platform issues

  - by anon

  Does anyone have experience writing professional OpenGL games on Windows? For the Mac, due to apple's control, the OS seems quite "uniform". For windows, due to different hardware, different drivers installed, etc ... the hardware base seems to have many many different configurations. In theory, OpenGL provides a API that abstracts all this away. In practice, many drivers are often buggy and have weird cases -- has this been a problem for developing games on Windows? Thanks!

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• c# gridview row click

  - by Martijn

  When i click on a row in my gridview, i want to go to a other page with the id i get from the database. In my RowCreated event i have the following line: e.Row.Attributes.Add("onClick", ClientScript.GetPostBackClientHyperlink(this.grdSearchResults, "Select$" + e.Row.RowIndex)); To prevent error messages i have this code: protected override void Render(HtmlTextWriter writer) { // .NET will refuse to accept "unknown" postbacks for security reasons. Because of this we have to register all possible callbacks // This must be done in Render, hence the override for (int i = 0; i < grdSearchResults.Rows.Count; i++) { Page.ClientScript.RegisterForEventValidation(new System.Web.UI.PostBackOptions(grdSearchResults, "Select$" + i.ToString())); } // Do the standard rendering stuff base.Render(writer); } My question is, how can i give a row a unique id (from the DB) and when i click the row, another page is opened (like clicking on a href) and that page can read the id. Thnx

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• will_paginate undefined method error - Ruby on Rails

  - by bgadoci

  I just installed the gem for will_paginate and it says that it was installed successfully. I followed all the instructions listed with the plugin and I am getting an 'undefined method `paginate' for' error. Can't find much in the way of Google search and haven't been able to fix it myself (obviously). Here is the code: PostsController def index @tag_counts = Tag.count(:group => :tag_name, :order => 'updated_at DESC', :limit => 10) @posts = Post.paginate :page => params[:page], :per_page => 50 respond_to do |format| format.html # index.html.erb format.xml { render :xml => @posts } format.json { render :json => @posts } format.atom end end /model/post.rb class Post < ActiveRecord::Base validates_presence_of :body, :title has_many :comments, :dependent => :destroy has_many :tags, :dependent => :destroy cattr_reader :per_page @@per_page = 10 end /posts/views/index.html.erb <%= will_paginate @posts %>

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• Django Auth Model Issue - AUTH_USER_MODEL Not Installed

  - by Ian Warner

  Trying to debug this error with getting a Django project running ImproperlyConfigured: AUTH_USER_MODEL refers to model 'accounts.User' that has not been installed Running python manage.py migrate Must iterate i am in no way a python or django expert - I have simply inherited someone elses project that I am trying to get running for the team here. I have followed steps to install postgres required modules including south creating database for postgres Any help appreciated on how to debug this. settings/base.py contains INSTALLED_APPS = DJANGO_APPS + THIRD_PARTY_APPS + LOCAL_APPS LOCAL_APPS = ( 'apps.core', 'apps.accounts', 'apps.project_tool', 'apps.internal', 'apps.external', ) so apps.accounts exits - but it asks for AUTH_USER_MODEL = 'accounts.User' - should it be AUTH_USER_MODEL = 'apps.accounts.User'?

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• iPhone Simulator 3.x not supported after upgrading to XCode 3.2.3 Beta4 with OS 4.0

  - by Jon

  I've been having some problems, & since you guys are the smartest devs I thought I'd just ask you. When I last installed Xcode 3.2.3 Beta 2 (OS 4.0 support), it had all the iPhone Device & Simulator 3.x. Now, updated to Xcode 3.2.3 Beta 4 (OS 4.0 support), it no longer lists 3.x SDKs for either simulator or device in XCode. I'm aware that 3.2.3 changes the BASE SDK to 4.0, but how come none of the 3.x devices are available either? When I go to: /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs The only two files available are: iPhoneSimulator3.2.sdk iPhoneSimulator4.0.sdk However, when I go to: /Developer/Platforms/iPhoneOS.platform/DeviceSupport 3.0 3.0.1 3.1 3.1.1 3.1.2 3.1.3 3.2 4.0 (8A274b)

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• Library to parse ERB files

  - by Douglas Sellers

  I am attempting to parse, not evaluate, rails ERB files in a Hpricot/Nokogiri type manner. The files I am attempting to parse contain HTML fragments intermixed with dynamic content generated using ERB (standard rails view files) I am looking for a library that will not only parse the surrounding content, much the way that Hpricot or Nokogiri will but will also treat the ERB symbols, <%, <%= etc, as though they were html/xml tags. Ideally I would get back a DOM like structure where the <%, <%= etc symbols would be included as their own node types. I know that it is possible to hack something together using regular expressions but I was looking for something a bit more reliable as I am developing a tool that I need to run on a very large view code base where both the html content and the erb content are important. For example, content such as: blah blah blah <divMy Great Text <%= my_dynamic_expression %</div Would return a tree structure like: root - text_node (blah blah blah) - element (div) - text_node (My Great Text ) - erb_node (<%=)

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• C# - Silverlight - CustomAttribute with Enum

  - by cmaduro

  I have the following class: [MetadataAttribute] [AttributeUsage(AttributeTargets.Property, AllowMultiple = false)] public class ModuleActivationButtonAttribute : ExportAttribute { public Enum TargetRegion { get; set; } public ModuleActivationButtonAttribute(Enum targetRegion) : base(typeof(IModuleActivationButton)) { TargetRegion = targetRegion; } } The class compiles fine, but when I decorate my property with it: [ModuleActivationButton(Regions.Tabs)] public IModuleActivationButton ModuleActivationButton { get { return new ModuleActivationButton() as IModuleActivationButton; } set { ModuleActivationButton = value; } } public enum Regions { Content, Tabs } The compiler spits out: Error 1 An attribute argument must be a constant expression, typeof expression or array creation expression of an attribute parameter type C:\...\Manpower4U.Modules.Home\HomeModule.cs 28 33 Manpower4U.Modules.Home

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• Accessing ruby counter cache

  - by Julian

  Hi all, I'm playing around with a fork of acts_as_taggable_on_steroids as a learning exercise. The version I'm looking at does some stuff I don't understand to calculate Tag counts. So I thought I'd do a version using PORC (Plain Old Rails Counters): class Tagging < ActiveRecord::Base #:nodoc: belongs_to :tag, :counter_cache => "tagging_counter_cache" ... I thought tagging_counter_cache was transparently accessed when I access tag.taggings.count but apparently not? Do I really have to access tag.tagging_counter_cache explicitly? >> tag.taggings.count SQL (0.7ms) SELECT count(*) AS count_all FROM `taggings` WHERE (`taggings`.tag_id = 16) Same for size. It's cool if that's the case but just wanted to check.

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• Rails 3 plugin - Generate a custom migration file

  - by moshimoshi

  Hi, On this article http://www.themodestrubyist.com/2010/03/16/rails-3-plugins---part-3---rake-tasks-generators-initializers-oh-my/ we can see the following codes which allow to invoke a migration file: class ActsAsTaggableOnMigrationGenerator < Rails::Generators::Base invoke "migration", %(add_fields_to_tags name:string label:string) end The command looks like: $ rails generate acts_as_taggable_on User invoke migration invoke active_record create db/migrate/20100529220831_user.rb error "add_fields_to_tags name:string label:string" [not found] I don't understand why I get this error... and I have 2 questions about: 1/ How can I do to customize the name of the generated file? Just like: 20100529220831_add_tag_field_to_users.rb. 2/ How can I pass in some args such as: $ rails generate acts_as_taggable_on User tag1 tag2 tag2 in order to customize the generating file such as tag1:string tag2:string tag3:string... Many thanks!

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• Riddle with "href".

  - by kalininew

  Mysticism. I use XSLT for reception of the address for the reference. <a href="{element/url}"/> In XML i have: <element> <url>www.mysite.ru</url> </element> As a result on page I receive: <a href="www.currentsite.ru/cursection/cursubsection/www.mysite.ru"/> That is: in the beginning there is an address of a current site (the address of current section where we now are), and then there is a reference to an external site. There can be it any problem with metatag BASE? In what a trouble?

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• How cancel shutdown from a windows service C#

  - by scrat789

  Hello everybody I have a windows service started (written in C# .net2.0). I want to detect when the computer shutdown/reboot and cancel it. After the cancel I want do some actions and restart windows. I have tried it, but it not working using Microsoft.Win32; partial class MyService: ServiceBase { protected override void OnStart(string[] args) { SystemEvents.SessionEnding += new SessionEndingEventHandler(OnSessionEnding); } private void OnSessionEnding(object sender, SessionEndingEventArgs e) { e.Cancel = true; //Do some work... } } Another test: partial class MyService: ServiceBase { protected override void OnShutdown() { //Do some work... //base.OnShutdown(); } }

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• "this device cannot start error code 10" ?

  - by Neo

  I am trying to install GPS driver for gmm-u1lp.I think which is just a virtual com port driver. It just contains following INF file: [Version] Signature="$Windows NT$" Class=Ports ClassGuid={4D36E978-E325-11CE-BFC1-08002BE10318} Provider=%MTK% ;LayoutFile=layout.inf DriverVer=06/12/2007,1.0.0.1 [Manufacturer] %MTK%=MTK [MTK] %MTK3329%=Reader,USB\Vid_0e8d&Pid_3329 [Reader_Install.NTx86] ;Windows2000 [DestinationDirs] DefaultDestDir=12 Reader.NT.Copy=12 [Reader.NT] Include=mdmcpq.inf CopyFiles=FakeModemCopyFileSection AddReg=Reader.NT.AddReg [Reader.NT.AddReg] HKR,,DevLoader,,*ntkern HKR,,NTMPDriver,,usbser.sys HKR,,EnumPropPages32,,"MsPorts.dll,SerialPortPropPageProvider" [Reader.NT.Services] AddService = usbser, 0x00000002, Service_Inst [Service_Inst] DisplayName = %Serial.SvcDesc% ServiceType = 1 ; SERVICE_KERNEL_DRIVER StartType = 3 ; SERVICE_DEMAND_START ErrorControl = 1 ; SERVICE_ERROR_NORMAL ServiceBinary = %12%\usbser.sys LoadOrderGroup = Base [Strings] MTK = "Media Tek Inc." MTK3329 = "GPS USB Serial Interface Driver" Serial.SvcDesc = "GPS USB Serial Interface Driver" After installing this Inf,device details shows:"device cannot start error code 10". What is the exact problem? Do I need to test this after connecting the Device?

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• Help with InvalidCastException

  - by Robert

  I have a gridview and, when a record is double-clicked, I want it to open up a new detail-view form for that particular record. As an example, I have created a Customer class: using System; using System.Data; using System.Configuration; using System.Collections.Generic; using System.ComponentModel; using System.Data.SqlClient; using System.Collections; namespace SyncTest { #region Customer Collection public class CustomerCollection : BindingListView<Customer> { public CustomerCollection() : base() { } public CustomerCollection(List<Customer> customers) : base(customers) { } public CustomerCollection(DataTable dt) { foreach (DataRow oRow in dt.Rows) { Customer c = new Customer(oRow); this.Add(c); } } } #endregion public class Customer : INotifyPropertyChanged, IEditableObject, IDataErrorInfo { private string _CustomerID; private string _CompanyName; private string _ContactName; private string _ContactTitle; private string _OldCustomerID; private string _OldCompanyName; private string _OldContactName; private string _OldContactTitle; private bool _Editing; private string _Error = string.Empty; private EntityStateEnum _EntityState; private Hashtable _PropErrors = new Hashtable(); public event PropertyChangedEventHandler PropertyChanged; private void FirePropertyChangeNotification(string propName) { if (PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs(propName)); } } public Customer() { this.EntityState = EntityStateEnum.Unchanged; } public Customer(DataRow dr) { //Populates the business object item from a data row this.CustomerID = dr["CustomerID"].ToString(); this.CompanyName = dr["CompanyName"].ToString(); this.ContactName = dr["ContactName"].ToString(); this.ContactTitle = dr["ContactTitle"].ToString(); this.EntityState = EntityStateEnum.Unchanged; } public string CustomerID { get { return _CustomerID; } set { _CustomerID = value; FirePropertyChangeNotification("CustomerID"); } } public string CompanyName { get { return _CompanyName; } set { _CompanyName = value; FirePropertyChangeNotification("CompanyName"); } } public string ContactName { get { return _ContactName; } set { _ContactName = value; FirePropertyChangeNotification("ContactName"); } } public string ContactTitle { get { return _ContactTitle; } set { _ContactTitle = value; FirePropertyChangeNotification("ContactTitle"); } } public Boolean IsDirty { get { return ((this.EntityState != EntityStateEnum.Unchanged) || (this.EntityState != EntityStateEnum.Deleted)); } } public enum EntityStateEnum { Unchanged, Added, Deleted, Modified } void IEditableObject.BeginEdit() { if (!_Editing) { _OldCustomerID = _CustomerID; _OldCompanyName = _CompanyName; _OldContactName = _ContactName; _OldContactTitle = _ContactTitle; } this.EntityState = EntityStateEnum.Modified; _Editing = true; } void IEditableObject.CancelEdit() { if (_Editing) { _CustomerID = _OldCustomerID; _CompanyName = _OldCompanyName; _ContactName = _OldContactName; _ContactTitle = _OldContactTitle; } this.EntityState = EntityStateEnum.Unchanged; _Editing = false; } void IEditableObject.EndEdit() { _Editing = false; } public EntityStateEnum EntityState { get { return _EntityState; } set { _EntityState = value; } } string IDataErrorInfo.Error { get { return _Error; } } string IDataErrorInfo.this[string columnName] { get { return (string)_PropErrors[columnName]; } } private void DataStateChanged(EntityStateEnum dataState, string propertyName) { //Raise the event if (PropertyChanged != null && propertyName != null) { PropertyChanged(this, new PropertyChangedEventArgs(propertyName)); } //If the state is deleted, mark it as deleted if (dataState == EntityStateEnum.Deleted) { this.EntityState = dataState; } if (this.EntityState == EntityStateEnum.Unchanged) { this.EntityState = dataState; } } } } Here is my the code for the double-click event: private void customersDataGridView_CellDoubleClick(object sender, DataGridViewCellEventArgs e) { Customer oCustomer = (Customer)customersBindingSource.CurrencyManager.List[customersBindingSource.CurrencyManager.Position]; CustomerForm oForm = new CustomerForm(); oForm.NewCustomer = oCustomer; oForm.ShowDialog(this); oForm.Dispose(); oForm = null; } Unfortunately, when this code runs, I receive an InvalidCastException error stating "Unable to cast object to type 'System.Data.DataRowView' to type 'SyncTest.Customer'". This error occurs on the very first line of that event: Customer oCustomer = (Customer)customersBindingSource.CurrencyManager.List[customersBindingSource.CurrencyManager.Position]; What am I doing wrong?... and what can I do to fix this? Any help is greatly appreciated. Thanks!

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• Preparing a Universal App for iPhone SDK 3.2

  - by user133611

  Hi all, I am working on a universal app, I used UISplitViewController in doing iPad application. I followed the Universal app guidelines i.e, i keep base SDK as 3.2, iPhone Target OS ad iPhone OS 3.1.3, Taget device as iPhone/iPad. And i used "Adding Runtime Checks for Newer Symbols" for UISplitViewController and UIPopOverController. Class splitVCClass = NSClassFromString(@"UISplitViewController"); if (splitVC) { UISplitViewController* mySplitViewController = [[splitVCClass alloc] init]; // Configure the split view controller. } I used this in .m files I declared UIPopOverController in .h files also "dyld: Symbol not found: _OBJC_CLASS_$_UIPopoverController Referenced from: /var/mobile/Applications/9E0CE75F-D2A9-4132-AE56-1780928BCF21/UniversalTasks.app/UniversalTasks Expected in: /System/Library/Frameworks/UIKit.framework/UIKit in /var/mobile/Applications/9E0CE75F-D2A9-4132-AE56-1780928BCF21/UniversalTasks.app/UniversalTasks" What i have to do can any one help me out

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• Eclipse software management

  - by Maroloccio

  How to streamline/automate the configuration of Eclipse? Given N developers running a mixture of Ubuntu and Mac OS X, all with the same version of Eclipse, how to make sure that: Each developer, on top of his favourite "Available Software Sites" selection, has a common set of installation sources? Each developer has an easy (automated?) way of installing a base set of plug-ins? Each developer can just as easily install a custom plugin developed in-house and distributed over the local network? No automatically deployed plugins conflict with any others a developer might already be using? I would post this to serverfault.com if it wasn't that I am more interested in a "scripting" answer than a traditional "system management" solution... ;-)

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