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Articles indexed Tuesday May 11 2010

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  • Is it possible to do custom grouping in the ASP.NET ListView control?

    - by michielvoo
    You can only define a GroupItemCount in the ListView, but what if you want to do grouping based on a property of the items in the data source? Sort of an ad-hoc group by. The data source is sorted on this property. I have seen some examples where some markup in the ItemTemplate was conditionally show, but I want to leverage the GroupTemplate if possible. Is this possible?

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  • Warning on missing custom javadoc tags

    - by flumins
    We create a custom Doclet for our projet to generate a specific documentation for our client. We define some specific tags that are parsed by the doclet when we generate the documentation. Do you know how to ask eclipse to add warning when those special tags are missing in our javadoc comments ? Example of well formed javadoc: /** * @dialogName TECK-01-E-608 * @useVO ServiceVO * @useVO AgentVO */ public class MyDialog extends BaseDialogImpl { ... If @dialogName is missing, the developper should have a warning in eclipse... I look checkstyle a little bit, but I don't understand how to configure it to do such a thing. Thanks in advance for your help.

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  • SQL Where question

    - by needshelp
    Hi all, I have a question about case statements and nulls in a where clause. I want to do the following: Declare @someVar int = null select column1 from TestTable t where t = case when @someVar is not null then @someVar else t end Here is the problem: Let's say @someVar is null. Let's also say that column1 from TestTable t has NULL column values. Then, my condition t = t in the case statement will always evaluate to false. I basically just want to be able to conditionally filter the column based on the value of @someVar if it's provided. Any help?

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  • can I access a struct inside of a struct without using the dot operator?

    - by yan bellavance
    I have 2 structures that have 90% of their fields the same. I want to group those fields in a structure but I do not want to use the dot operator to access them. The reason is I already coded with the first structure and have just created the second one. before: struct{ int a; int b; int c; object1 name; } str1; struct{ int a; int b; int c; object2 name; } str2; now I would create a third struct: struct{ int a; int b; int c; } str3; and would change the str1 and atr2 to this: struct{ str3 str; object1 name; } str1; struct { str3 str; object2 name; } str2; Finally I would like to be able to access a,b and c by doing: str1 myStruct; myStruct.a; myStruct.b; myStruct.c; and not: myStruct.str.a; myStruct.str.b; myStruct.str.c; Is there a way to do such a thing. The reason for doing this is I want keep the integrety of the data if chnges to the struct were to occur and to not repeat myself and not have to change my existing code and not have fields nested too deeply. RESOLVED: thx for all your answers. The final way of doing it so that I could use auto-completion also was the following: struct str11 { int a; int b; int c; }; typedef struct str22 : public str11 { QString name; }hi;

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  • Win32 API Question

    - by Lalit_M
    We have developed a ASP.NET web application and has implemented a custom authentication solution using active directory as the credentials store. Our front end application uses a normal login form to capture the user name and password and leverages the Win32 LogonUser method to authenticate the user’s credentials. When we are calling the LogonUser method, we are using the LOGON32_LOGON_NETWORK as the logon type. The issue we have found is that user profile folders are being created under the C:\Users folder of the web server. The folder seems to be created when a new user who has never logged on before is logging in for the first time. As the number of new users logging into the application grows, disk space is shrinking due to the large number of new user folders getting created. Has anyone seen this behavior with the Win32 LogonUser method? Does anyone know how to disable this behavior?

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  • "No message serializer has been configured" error when starting NServiceBus endpoint

    - by SteveBering
    My GenericHost hosted service is failing to start with the following message: 2010-05-07 09:13:47,406 [1] FATAL NServiceBus.Host.Internal.GenericHost [(null)] <(null) - System.InvalidOperationException: No message serializer has been con figured. at NServiceBus.Unicast.Transport.Msmq.MsmqTransport.CheckConfiguration() in d:\BuildAgent-02\work\672d81652eaca4e1\src\impl\unicast\NServiceBus.Unicast.Msmq\ MsmqTransport.cs:line 241 at NServiceBus.Unicast.Transport.Msmq.MsmqTransport.Start() in d:\BuildAgent-02\work\672d81652eaca4e1\src\impl\unicast\NServiceBus.Unicast.Msmq\MsmqTransport .cs:line 211 at NServiceBus.Unicast.UnicastBus.NServiceBus.IStartableBus.Start(Action startupAction) in d:\BuildAgent-02\work\672d81652eaca4e1\src\unicast\NServiceBus.Uni cast\UnicastBus.cs:line 694 at NServiceBus.Unicast.UnicastBus.NServiceBus.IStartableBus.Start() in d:\BuildAgent-02\work\672d81652eaca4e1\src\unicast\NServiceBus.Unicast\UnicastBus.cs:l ine 665 at NServiceBus.Host.Internal.GenericHost.Start() in d:\BuildAgent-02\work\672d81652eaca4e1\src\host\NServiceBus.Host\Internal\GenericHost.cs:line 77 My endpoint configuration looks like: public class ServiceEndpointConfiguration : IConfigureThisEndpoint, AsA_Publisher, IWantCustomInitialization { public void Init() { // build out persistence infrastructure var sessionFactory = Bootstrapper.InitializePersistence(); // configure NServiceBus infrastructure var container = Bootstrapper.BuildDependencies(sessionFactory); // set up logging log4net.Config.XmlConfigurator.Configure(); Configure.With() .Log4Net() .UnityBuilder(container) .XmlSerializer(); } } And my app.config looks like: <configSections> <section name="MsmqTransportConfig" type="NServiceBus.Config.MsmqTransportConfig, NServiceBus.Core" /> <section name="UnicastBusConfig" type="NServiceBus.Config.UnicastBusConfig, NServiceBus.Core" /> <section name="Logging" type="NServiceBus.Config.Logging, NServiceBus.Core" /> <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" requirePermission="false" /> </configSections> <Logging Threshold="DEBUG" /> <MsmqTransportConfig InputQueue="NServiceBus.ServiceInput" ErrorQueue="NServiceBus.Errors" NumberOfWorkerThreads="1" MaxRetries="2" /> <UnicastBusConfig DistributorControlAddress="" DistributorDataAddress="" ForwardReceivedMessagesTo="NServiceBus.Auditing"> <MessageEndpointMappings> <!-- publishers don't need to set this for their own message types --> </MessageEndpointMappings> </UnicastBusConfig> <connectionStrings> <add name="Db" connectionString="Data Source=..." providerName="System.Data.SqlClient" /> </connectionStrings> <log4net debug="true"> <root> <level value="INFO"/> </root> <logger name="NHibernate"> <level value="ERROR" /> </logger> </log4net> This has worked in the past, but seems to be failing when the generic host starts. My endpoint configuration is below, along with the app.config for the service. What is strange is that in my endpoint configuration, I am specifying to use the XmlSerializer for message serialization. I don't see any other errors in the console output preceding the error message. What am I missing? Thanks, Steve

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  • MATLAB: vectorized array creation from a list of start/end indices

    - by merv
    I have a two-column matrix M that contains the start/end indices of a bunch of intervals: startInd EndInd 1 3 6 10 12 12 15 16 How can I generate a vector of all the interval indices: v = [1 2 3 6 7 8 9 10 12 15 16]; I'm doing the above using loops, but I'm wondering if there's a more elegant vectorized solution? v = []; for i=1:size(M,1) v = [v M(i,1):M(i,2)]; end

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  • Program exit code -SomeNumber

    - by JohnnyLongPants
    i made a program using Qt for Symbian, its all working very well ... However, it always exits with a status code -10737something when i close the program i think the problem is in the deconstructer, maybe some memory leaks ... any suggestion on how to solve this problem, or to find the error using Qt Creator? thanks

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  • Labview String output

    - by hkf
    How do I send a string output from a DAQ Board (NI- USB 6259) using labview? I want to send commands such as " CELL 0" or "READ" to a potentiostat device using labview. Thanks

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  • org-mode agenda tree view

    - by Ray
    In org-mode's daily/weekly agenda view, is there a way to display the full context of the entries? My reading of the code is that it finds the first heading above the timestamp and displays that. However, in my case, that heading is often 3-4 levels deep and doesn't make sense without the bullets above it. It also doesn't seem like there are hooks to easily change that. Filtering is trivial, but not changing the fundamental presentation format.

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  • Linking LAPACK/BLAS libraries

    - by Daniel Bremberg
    Background: I am working on a project written in a mix of C and Fortran 77 and now need to link the LAPACK/BLAS libraries to the project (all in a Linux environment). The LAPACK in question is version 3.2.1 (including BLAS) from netlib.org. The libraries were compiled using the top level Makefile (make lapacklib and make blaslib). Problem: During linking, error messages claimed that certain (not all) BLAS-routines called from LAPACK-routines were undefined. This gave me some headache but the problem was eventually solved when (in the Makefile) the order of appearance of the libraries to be linked was changed. Code: In the following, (a) gives errors while (b) does not. The linking is performed by (c). (a) LIBS = $(LAPACK)/blas_LINUX.a $(LAPACK)/lapack_LINUX.a (b) LIBS = $(LAPACK)/lapack_LINUX.a $(LAPACK)/blas_LINUX.a (c) gcc -Wall -O -o [email protected] project.o project.a $(LIBS) Question: What could be the reason for the undefined references of only some routines and what makes the order of appearance relevant?

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  • Powershell script to send e-mails, losing text in e-mail attachment

    - by Beuy
    I have the following function to send e-mails in powershell with attachments: function SendMail(){ if($e -ine '') { $mail = New-Object System.Net.Mail.MailMessage $mail.From = $f; $mail.To.Add($t); $mail.Subject = $s; $att = New-Object System.Net.Mail.Attachment –ArgumentList $l $mail.Attachments.Add($att) $mail.Body = $b; $smtp = New-Object System.Net.Mail.SmtpClient($serv); $smtp.Send($mail); } } When I try to send a .txt file attachment it seems to strip out all of the information from within the text file. Any suggestions as to what's going wrong?

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  • Suddenly - No icons on Snow Leopard

    - by Alex B.
    Hi, I have been experiencing problems with icons in the dock. When I open an application that is not in the dock (e.g. from the finder), a transparent square appears. Same thing happens in the application switcher (i.e. command + tab).

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  • Dual Monitor difficulties (VirtualBox ubuntu host) - rdesktop sessions mirror

    - by rukus5
    I am running ubuntu 9.10 host with a Windows guest and need to extend my guest windows desktop into the second monitor (otherwise I will have to convert to a dual boot situation because this is a work furnished computer, please HELP!!) Current Situation: Windows Guest Running with VRDP enabled and successfully connecting. Guest Additions running and VBox set to 2 monitors and I see two monitors in display settings. connecting via 2 different rdesktop sessions mirrors the display. even though display settings of Guest Windows is set to extend desktop. is there a rdesktop option to signify to the VBox it is the second display? I need the second connection be the second display. any ideas?

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  • The penultimate audit trigger framework

    - by Piotr Rodak
    So, it’s time to see what I came up with after some time of playing with COLUMNS_UPDATED() and bitmasks. The first part of this miniseries describes the mechanics of the encoding which columns are updated within DML operation. The task I was faced with was to prepare an audit framework that will be fairly easy to use. The audited tables were to be the ones directly modified by user applications, not the ones heavily used by batch or ETL processes. The framework consists of several tables and procedures...(read more)

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  • UINavigationController crash because of pushing and poping UIViewControllers

    - by Wayne Lo
    My question is related to my discovery of a reason for UINavigationController to crash. So I will tell you about the discovery first. Please bare with me. The issue: I have a UINavigationController as as subview of UIWindow, a rootViewController class and a custom MyViewController class. The following steps will get a Exc_Bad_Access, 100% reproducible.: [myNaviationController pushViewController:myViewController_1stInstance animated:YES]; [myNaviationController pushViewController:myViewController_2ndInstance animated:YES]; Hit the left back tapBarItem twice (pop out two of the myViewController instances) to show the rootViewController. After a painful 1/2 day of try and error, I finally figure out the answer but also raise a question. The Solutio: I declared many objects in the .m file as a lazy way of declaring private variables to avoid cluttering the .h file. For instance, #impoart "MyViewController.h" NSMutableString*variable1; @implement ... -(id)init { ... varialbe1=[[NSMutableString alloc] init]; ... } -(void)dealloc { [variable1 release]; } For some reasons, the iphone OS may loose track of these "lazy private" variables memory allocation when myViewController_1stInstance's view is unloaded (but still in the navigation controller's stacks) after loading the view of myViewController_2ndInstance. The first time to tap the back tapBarItem is ok since myViewController_2ndInstance'view is still loaded. But the 2nd tap on the back tapBarItem gave me hell because it tried to dealloc the 2nd instance. Executing [variable release] resulted in Exc_Bad_Access because it pointed randomly (loose pointer). To fix this problem is simple, declare variable1 as a @private in the .h file. Here is my Question: I have been using the "lazy private" variables for quite some time without any issues until they are involved in UINavigationController. Is this a bug in iPhone OS? Or there is a fundamental misunderstanding on my part about Objective C? Please help.

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  • On Windows, how does console window ownership work?

    - by shroudednight
    When a console application is started from another console application, how does console ownership work? I see four possibilities: The second application inherits the console from the first application for its lifetime, with the console returning to the original owner on exit. Each application has its own console. Windows then somehow merges the content of the two into what the "console" visible to the user The second application get a handle to the console that belongs to the first application. The console is placed into shared memory and both applications have equal "ownership" It's quite possible that I missed something and none of these four options adequately describe what Windows does with its consoles. If the answer is close to option 4. My follow-up question is which of the two processes is responsible for managing the window? (Handling graphical updates when the screen needs to be refreshed / redrawn, etc) A concrete example: Run CMD. Then, using CMD, run [console application]. The [console application] will write to what appears to be the same console window that CMD was using.

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  • Access Rails 3 Session from Rack?

    - by viatropos
    I was able to do the following in Rails 2.3.5 to access attributes that I set on the session from within my Rails app. Now in Rails 3, env["rack.session"] is nil. How do I do the same thing in Rails 3? class CallbackFilter def initialize(app) @app = app end def call(env) unless env["rack.session"][:oauth_callback_method].blank? env["REQUEST_METHOD"] = env["rack.session"].delete(:oauth_callback_method).to_s.upcase end @app.call(env) end end

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  • Iphone application crashes when poping to rootController of UITabBar tab

    - by sniurkst
    Hello, I'm having this bug I can't figure out and it is making my head hurt. So, basically, in my iphone application I have UITabBar with some tabs each having UINavigationControllers inside. Something like this: someViewController *someController = [[someViewController alloc] myInit]; UINavigationController *someNav = [[UINavigationController alloc] initWithRootViewController:someController]; tab = [[UITabBarController alloc] init]; tab.viewControllers = [NSArray arrayWithObjects:otherNav, otherNav, evilNav, nil]; [window addSubview:tab.view]; So to reproduce my "precious" bug I go like this: click evilNav tab -> push tableListView (category list) -> push otherTableListView (category items list) -> push someOtherView (single item) -> popToRoot || popToController withindex:0 || click on evilNav tab again || pop to otherTableListView -> pop to tableListView -> crash (with no notable error) So if I go so far to someOtherView I can't go back to first tableListView (rootViewController) without application crashing. Meanwhile I can go to other tabs and then even click evilNav (when it is in otherTableListView or someOtherView state) without crashing. What could be causing this problem? (If you need I will post more code)

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  • Resolving ambiguous this pointer in C++

    - by Paul Tevis
    I'm trying to derive a new class from an old one. The base class declaration looks like this: class Driver : public Plugin, public CmdObject { protected: Driver(); public: static Driver* GetInstance(); virtual Engine& GetEngine(); public: // Plugin methods... virtual bool InitPlugin (Mgr* pMgr); virtual bool Open(); virtual bool Close(); // CmdObject virtual bool ExecObjCmd(uint16 cmdID, uint16 nbParams, CommandParam *pParams, CmdChannelError& error); Mgr *m_pMgr; protected: Services *m_pServices; Engine m_Engine; }; Its constructor looks like this: Driver::Driver() : YCmdObject("Driver", (CmdObjectType)100, true), m_Engine("MyEngine") { Services *m_pServices = NULL; Mgr *m_pMgr = NULL; } So when I created my derived class, I first tried to simply inherit from the base class: class NewDriver : public Driver and copy the constructor: NewDriver::NewDriver() : CmdObject("NewDriver", (EYCmdObjectType)100, true), m_Engine("MyNewEngine") { Services *m_pServices = NULL; Mgr *m_pMgr = NULL; } The compiler (VisualDSP++ 5.0 from Analog Devices) didn't like this: ".\NewDriver.cpp", line 10: cc0293: error: indirect nonvirtual base class is not allowed CmdObject("NewDriver", (EYCmdObjectType)100, true), That made sense, so I decided to directly inherit from Plugin and CmdObject. To avoid multiple inheritance ambiguity problems (so I thought), I used virtual inheritance: class NewDriver : public Driver, public virtual Plugin, public virtual CmdObject But then, in the implementation of a virtual method in NewDriver, I tried to call the Mgr::RegisterPlugin method that takes a Plugin*, and I got this: ".\NewDriver.cpp", line 89: cc0286: error: base class "Plugin" is ambiguous if (!m_pMgr->RegisterPlugin(this)) How is the this pointer ambiguous, and how do I resolve it? Thanks, --Paul

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  • How to dynamic adjust the number of columns in Table layout

    - by michael
    Hi, I create a TableLayout which has 3 equally-wide columns (I put 'stretchColumns="*" in my TableLayout which has 3 TextViews). See below: But my questions is why I set one of the TextView to 'visibility' to Gone in my java code, the TableLayout does not re-size to 2 qually-wide columns which fit the whole screen. I have even call 'tableLayout.requestLayout()' after i set the visibility to Gone.' How can I achieve what I want? Thank you. <TableLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/textpanel" android:stretchColumns="*"> <TableRow android:layout_width="fill_parent" android:layout_height="wrap_content"> <TextView android:id="@+id/text1" android:layout_width="fill_parent" android:layout_height="wrap_content"/> <TextView android:id="@+id/text2" android:layout_width="fill_parent" android:layout_height="wrap_content"/> <TextView android:id="@+id/text3" android:layout_width="fill_parent" android:layout_height="wrap_content"/> </TableRow> </TableLayout>

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  • Slow synch of files form iPad to webserver?

    - by MikeN
    I'm building a recording iPad application that will take some moderately large recordings on the iPad (5-10 minutes of full audio roughly 5-10Megabytes in size.) How can I synch such large files to my web server for use? I want the synching to occur asynchronously in the background. Is there an existing library/utility to synch files in the Megabyte range from an iPhone/iPad to a server in small chunks?

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