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• DataTable to Object collection

  - by Kenneth Cochran

  I'm working on a data import feature and I've been able to load an excel sheet into a DataTable using Ado.NET with the MSJet db engine. I created a simple one-to-one mapping dialog, in which the user drags column headings from their spreadsheet to a list of object properties. What's stumping me is how to turn each DataRow into a business object. Is there an easy way to do this? If there is a better way than using a DataTable as a middleman I'm open to suggestion? I use NHibernate extensively through out the rest of my program but I couldn't find any attempts to map to an excel spreadsheet. I went with a DataTable because the technique was well documented.

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• Group SQL tables in SQL Server Management Studio object explorer

  - by MainMa

  I have a table which has approximately sixty tables, and other tables are added constantly. Each table is a part of a schema. A such quantity of tables makes it difficult to use Microsoft SQL Server Management Studio 2008. For example, I must scroll up in object explorer to access database related functions, or scroll down each time I need to access Views or Security features. Is it possible to group several tables to be able to expand or collapse them in Object Explorer? Maybe a folder may be displayed for each schema, letting collapse the folders I don't need to use?

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• Need a design pattern for representing multiple information sources

  - by hsmit

  I'm building a Java application that retrieves information from differing information sources. I'm using a sensor, a set of RecordStores and a few online web services. In the basic application all these resources are loaded by default. Some of these sources are directly read in a separate thread (load database, read sensor etc.). From this basic application some functions are started that use these sources. The classes that contain these functions (usually combining multiple sources information) are currently paramterized with a set of resources like this: AppPart a1 = new AppPart(source1, source2, source3); I could also do it like this AppPart a1 = new AppPart(this); ..where I need to make my sources public in order to read them. I'm also thinking about a kind of stage/collection to publish all sources on, e.g: public SourceCollectionStage sStage = new SourceCollectionStage(); and later: sStage.getSensor(); .. for example. What do you guys think is the best or most often used way to do this? Btw: the user interface is often implemented by the specific funtion classes, not by the main class. Should I do this in another way?

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• Object Dump JavaScript

  - by Jessy Houle

  Is there a 3rd party add-on/application or some way to perform object map dumping in script debugger for a JavaScript object? Here is the situation... I have a method being called twice, and during each time something is different. I'm not sure what is different, but something is. So, if I could dump all the properties of window (or at least window.document) into a text editor, I could compare the state between the two calls with a simple file diff. Thoughts? Thank you in advance. -Jessy Houle

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• how design architecture of .NET CF WinForm?

  - by MicTech

  I'm starting with .NET CF WinForm application and I have some experience with .NET WinForm. What is better for UI, form for each dialog or one form and changing user controls on that form? I'm asking for that, because screen on mobile devices are very small and I designed more then ten different screens for my application.

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• database design question

  - by Leonardo

  Hi all, I am building a database as a simple exercise, it could be hosted on any database server, so I am trying to keep things as much standard as possible. Basically what I would like to do is a 'code' table that get referenced by other entities. I explain: xcode id code r role p property code r admin r staff p title .... then I would like to have some view like: role (select * from code where xcode='r') r admin r staff property (select * from code where xcode='p') p title then, suppose we have an entity myentity id - 1 role - admin (foreign key to role) title - title (foreign key to property) Obviously I cannot create foreign key to a view, but this is to tell the idea I have in mind. How can I reflect such behaviour using whenever possible, standard sql syntax, then as a second option, database additional features like trigger ecc... ? Because if I tell that role and title in myentity are foreign key to 'code', instead of the views, nothing would stop me to insert a role in title field. thanks Leonardo

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• Python Vector Class

  - by sfjedi

  I'm coming from a C# background where this stuff is super easy—trying to translate into Python for Maya. There's gotta' be a better way to do this. Basically, I'm looking to create a Vector class that will simply have x, y and z coordinates, but it would be ideal if this class returned a tuple with all 3 coordinates and if you could edit the values of this tuple through x, y and z properties, somehow. This is what I have so far, but there must be a better way to do this than using an exec statement, right? I hate using exec statements. class Vector(object): '''Creates a Maya vector/triple, having x, y and z coordinates as float values''' def __init__(self, x=0, y=0, z=0): self.x, self.y, self.z = x, y, z def attrsetter(attr): def set_float(self, value): setattr(self, attr, float(value)) return set_float for xyz in 'xyz': exec("%s = property(fget=attrgetter('_%s'), fset=attrsetter('_%s'))" % (xyz, xyz, xyz))

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• How to design html timetable

  - by Conor H

  Hi There, I'm currently working on a project where I need to print out a lesson timetable. Here is a link to the one I have created http://conorhackett.com/tt/. It works fine now but i'd like to have more control over it. If you look at the code you'll see what I mean. The html/css is very messy. I've tried to do it with a html table but it didn't look great with all the lines. Is there any foundations available to me that I could use as a base.? Any adive greatly appreciated :) --Conor

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• Like Html.RenderAction() but without reinstantiating the controller object

  - by Jørn Schou-Rode

  I like to use the RenderAction extension method on the HtmlHelper object to render sidebars and the like in pages, as it allows me to keep the data access code for each such part in separate methods on the controller. Using an abstract controller base, I can define a default "sidebar strategy", which can then be refined by overriding the method in a concrete controller, when needed. The only "problem" I have with this approach, is that the RenderAction is built in a way where it always creates a news instance of the controller class, even when rendering actions from the controller already in action. Some of my controllers does some data lookup in their Initialize method, and using the RenderAction method in the view causes this to occur several times in the same request. Is there some alternative to RenderAction which will reuse the controller object if the action method to be invoked is on the same controller class as the "parent" action?

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• Import OLE Object from Access to MySQL

  - by SecretDeveloper

  I have a table in an access table which contains Product entries, one of the columns has a jpg image stored as an OLE Object. I am trying to import this table to MySQL but nothing seems to work. I have tried the MySQL migration tool but that has a known issue with Access and OLE Objects. (The issue being it doesnt work and leaves the fields blank) I also tried the suggestion on this site and while the data is imported it seems as though the image is getting corrupted in the transfer. When i try to preview the image i just get a binary view, if i save it on disk as a jpg image and try to open it i get an error stating the image is corrupt. The images in Access are fine and can be previewed. Access is storing the data as an OLE Object and when i import it to MySql it is saved in a MediumBlob field. Has anyone had this issue before and how did they resolve it ?

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• Book Recommendation for OO design and TDD

  - by whatispunk

  I know there are a ton of books available on the subject but I want one that is recent and describes OOD in terms of TDD, dependency injection, IoC containers, and mocking frameworks. I realize this question is subjective, but I trust in the opinions of SO-ers and am having difficult using Google to provide any real results. Thanks.

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• Restlet/Jackson works differently when object implements Serializable

  - by ravyoli

  I am sending an object with some primitive fields using Restlet with Jackson converter. Up until now it worked great. But then I needed my object to implement Serializable, because I need to store it in memcache of GAE. For some reason - when the class implements Serializable, things stop working. Restlet sends a different string representation from before, and I can't even print that string in the server. I tried printing its byte value, char-by-char and the first numbers are: 0xfffd 0xfffd 0x0000 0x0005 0x0073 0x0072 Thanks a lot!

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• object explorer control

  - by šljaker

  I'm writing application for code generation and I would like to use object explorer control such as the one in visual studio, so I can manually design my objects. How can I do that?

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• Convert JSON String to Java Object or HashMap

  - by Priyank

  Hi. I am writing an android app. I want to pass some data across the intents/activities and I feel that a conversion to and from JSON is probably a more optimal way at this point. I am able to convert a java hashmap to a json string successfully using JSONObject support. However i need to convert back this JSON string to a java object or a hashmap. What is the best way to go about it. Is parcelable really a change worth doing; if I have simple 5 field object? What are the other ways to transfer data between intents. Cheers

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• Problem with persisting a collection, that references an internal property, at design time in winfor

  - by Jules

  ETA: Jesus, I'm sick of this. This problem was specifically about persisting an interface collection but now on further testing it doesn't work for a normal collection. Here's some even simpler code: Public Class Anger End Class Public Class MyButton Inherits Button Private _Annoyance As List(Of Anger) <DesignerSerializationVisibility(DesignerSerializationVisibility.Content)> _ Public ReadOnly Property Annoyance() As List(Of Anger) Get Return _Annoyance End Get End Property Private _InternalAnger As Anger <DesignerSerializationVisibility(DesignerSerializationVisibility.Content)> _ Public ReadOnly Property InternalAnger() As Anger Get Return Me._InternalAnger End Get End Property Public Sub New() Me._Annoyance = New List(Of Anger) Me._InternalAnger = New Anger Me._Annoyance.Add(Me._InternalAnger) End Sub End Class The designer screws up the persistence code in the same way as the original problem. ---- Original Problem The easiest way to explain this problem is to show you some code: Public Interface IAmAnnoyed End Interface Public Class IAmAnnoyedCollection Inherits ObjectModel.Collection(Of IAmAnnoyed) End Class Public Class Anger Implements IAmAnnoyed End Class Public Class MyButton Inherits Button Private _Annoyance As IAmAnnoyedCollection <DesignerSerializationVisibility(DesignerSerializationVisibility.Content)> _ Public ReadOnly Property Annoyance() As IAmAnnoyedCollection Get Return _Annoyance End Get End Property Private _InternalAnger As Anger <DesignerSerializationVisibility(DesignerSerializationVisibility.Content)> _ Public ReadOnly Property InternalAnger() As Anger Get Return Me._InternalAnger End Get End Property Public Sub New() Me._Annoyance = New IAmAnnoyedCollection Me._InternalAnger = New Anger Me._Annoyance.Add(Me._InternalAnger) End Sub End Class And this is the code that the designer generates: Private Sub InitializeComponent() Dim Anger1 As Anger = New Anger Me.MyButton1 = New MyButton ' 'MyButton1 ' Me.MyButton1.Annoyance.Add(Anger1) // Should be: Me.MyButton1.Annoyance.Add(Me.MyButton1.InternalAnger) ' 'Form1 ' Me.Controls.Add(Me.MyButton1) End Sub I've added a comment to the above to show how the code should have been generated. Now, if I dispense with the interface and just have a collection of Anger, then it persists correctly. Any ideas?

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• RadAjaxManager Destroys My Design And Move My Controls (In Preview Mode) that are Inside It

  - by LostLord

  hi my dear friends : why radajax manager do this to me ? plz see these pictures beloaw... http://www.2shared.com/file/12426877/11c38fb4/WithOut_RadAjaxManager.html http://www.2shared.com/file/12426799/63a4c800/With_RadAjaxManager.html this problem exists about every control inside radajaxmanager i mean radajaxmanager displaces my controls... how can i fix this? thanks for your attention

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• Passing Activity to non-activity object properly

  - by rayman

  In my app ive got a non-activity object which it's role is being a manager class. many times i need to pass "source activity" to methods as parameter to that manager class in order to make some operations on that activity. for exaple let's assume we have MyActivity which gotta do some toast. so i have this manager class called MyManager, and i have this method in it raiseToast(Activity sourceActivity) { Toast.makeText(sourceActivity, demo, Toast.LENGTH_LONG).show(); } and from Myactivity class we calling that method this way: MyManager manager=new MyManager(); manager.raitetoast(MyActivity.this); it works fine. what I'm asking here, is this a proper way to pass an Activity as parameter to a non-activity object? I'm having a memory leaks on real device(not the emulator), I wonder if this could also causing any reason for that? Thanks Idan.

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• Windows Store App Visual Basic Rotate Object with code

  - by Ajay Raghav

  How to rotate an ellipse (or any other object) with VB code? In XAML, I designed an ellipse and easily rotated it from the properties (Transform - Rotate - Angle). When I am trying to do it with VB code, I cannot locate the rotate/angle property of that ellipse. So, I tried this: Dim Rotator As RotateTransform Rotator.Angle = 90 Ellipse1.RenderTransform = Rotator It didn’t work. It says: Unable to cast object of type 'Windows.UI.Xaml.Media.MatrixTransform' to type 'Windows.UI.Xaml.Media.RotateTransform'. I think I’m close to the right way. Please give me a push. Thanks

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• Visual Studio: Design a UserControl class that derives from an abstract base class

  - by Marcel

  Hi All, I want to have an abstract base class for some of my custom UserControl's. The reason is obvious: they share some common properties and methods (a basic implementation of some elements of an interface actually), and I want to implement them only once. I have done this by defining my abstract base class: public abstract class ViewBase : UserControl, ISomeInterface Then I went to implement one of my views, as usual, with the designer: public partial class SpecialView : UserControl //all OK Up to here all is fine. Now I replace the derivation of my SpecialView class with the abstract base class: public partial class SpecialView : ViewBase //disrupts the designer Now, the designer in Visual Studio 2008 won't work anymore, stating: The designer must create an instance of type 'ViewBase' but it cannot because the type is declared as abstract. How can I circumvent this? I just do not want to have the same code copied for all those views. Info: there is a question question with virtual methods, instead of abstract classes, but there is no suitable solution for me.

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• Spring Design By Contract: where to start?

  - by Build Monkey

  I am trying to put a "Contract" on a method call. My web application is in Spring 3. Is writing customs Annotations the right way to go. If so, any pointers( I didn't find anything in spring reference docs). Should I use tools like "Modern Jass", JML ...? Again any pointers will be useful. Thanks

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• Binding CoreData Managed Object to NSTextFieldCell subclass

  - by ndg

  I have an NSTableView which has its first column set to contain a custom NSTextFieldCell. My custom NSTextFieldCell needs to allow the user to edit a "desc" property within my Managed Object but to also display an "info" string that it contains (which is not editable). To achieve this, I followed this tutorial. In a nutshell, the tutorial suggests editing your Managed Objects generated subclass to create and pass a dictionary of its contents to your NSTableColumn via bindings. This works well for read-only NSCell implementations, but I'm looking to subclass NSTextFieldCell to allow the user to edit the "desc" property of my Managed Object. To do this, I followed one of the articles comments, which suggests subclassing NSFormatter to explicitly state which Managed Object property you would like the NSTextFieldCell to edit. Here's the suggested implementation: @implementation TRTableDescFormatter - (BOOL)getObjectValue:(id *)anObject forString:(NSString *)string errorDescription:(NSString **)error { if (anObject != nil){ *anObject = [NSDictionary dictionaryWithObject:string forKey:@"desc"]; return YES; } return NO; } - (NSString *)stringForObjectValue:(id)anObject { if (![anObject isKindOfClass:[NSDictionary class]]) return nil; return [anObject valueForKey:@"desc"]; } - (NSAttributedString*)attributedStringForObjectValue:(id)anObject withDefaultAttributes:(NSDictionary *)attrs { if (![anObject isKindOfClass:[NSDictionary class]]) return nil; NSAttributedString *anAttributedString = [[NSAttributedString alloc] initWithString: [anObject valueForKey:@"desc"]]; return anAttributedString; } @end I assign the NSFormatter subclass to my cell in my NSTextFieldCell subclass, like so: - (void)awakeFromNib { TRTableDescFormatter *formatter = [[[TRTableDescFormatter alloc] init] autorelease]; [self setFormatter:formatter]; } This seems to work, but falls down when editing multiple rows. The behaviour I'm seeing is that editing a row will work as expected until you try to edit another row. Upon editing another row, all previously edited rows will have their "desc" value set to the value of the currently selected row. I've been doing a lot of reading on this subject and would really like to get to the bottom of this. What's more frustrating is that my NSTextFieldCell is rendering exactly how I would like it to. This editing issue is my last obstacle! If anyone can help, that would be greatly appreciated.

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• C# Class Design Question

  - by Soo

  This is a super newbie question, I've been programming for a while, but am just learning OOP. I have a class that works with user input via the C# console. There are different methods in this class to gather different input sets. I have another class that takes these input sets and puts them in a database. What is the best way to pass the input from my input class to my database insert class? My guess would be: Array1[] = inputClass.GetParameterSet1(); DatabaseInsertClass.InsertIntoDatabase1(Array1[]); Is there anything wrong with this or is there a better way to do this? Should I even have two classes (The database class could also take the user input)?

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• Release Excel Object In My Destructor

  - by Murat

  Hi all, I'm writing a Excel class using Microsoft.Interropt.Excel DLL. I finish all function but I have an error in my Destructor. I Want to save all changes to my file and I want to release all source. I want to all of them in my destructor. But In my destructor, Excel.ApplicationClass, Workbook and Worksheet objects are fill by an Exception which have message "COM object that has been separated from its underlying RCW cannot be used." So I can't save nothing, close nothing because i can't access workbook or worksheet object. Can't I access the class private members in Destructor?

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• How do I copy object in Qt?

  - by Martin

  I'm using Qt and have some real basic problems. I have created my own widget MyTest that have a variable obj. I need to set this variable obj from an object outside of the widget so that the variable is copied not just a pointer to another object. I get an error message and can't figure out how to do this basic stuff. This is the code I'm using: MyTest.h: class MyTest : public QWidget { Q_OBJECT public: void setObj(QObject &inobj); QObject obj; .... } MyTest.cpp: void MyTest::setObj(QObject &inobj) { obj = inobj; //HERE I get the error message: "illegal access from 'QObject' to protected/private member 'QObject::operator=(const QObject &)'" } main.cpp: int main(int argc, char *argv[]) { QApplication a(argc, argv); QObject *ob = new QObject(); MyTest w; w.setObj(*ob); } Thanks for your help!

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• Creating Mock object of Interface with type-hint in method fails on PHPUnit

  - by Mark

  I created the following interface: <?php interface Action { public function execute(\requests\Request $request, array $params); } Then I try to make a Mock object of this interface with PHPUnit 3.4, but I get the following error: Fatal error: Declaration of Mock_Action_b389c0b1::execute() must be compatible with that of Action::execute() in D:\Xampp\xampp\php\PEAR\PHPUnit\Framework\TestCase.php(1121) : eval()'d code on line 2 I looked through the stack trace I got from PHPUnit and found that it creates a Mock object that implements the interface Action, but creates the execute method in the following way: <?php public function execute($request, array $params) As you can see, PHPUnit takes over the array type-hint, but forgets about \requests\Request. Which obviously leads to an error. Does anyone knows a workaround for this error? I also tried it without namespaces, but I still get the same error.

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