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• Using a DataSet instead of custom business entities in soa and n-tier architecture

  - by kathy

  I’m working on a large and a high volume transactional enterprise application which has been designed using n-tire application architecture .And it was developed in the .NET platform utilizing C#,VB.NEt, Framework 3.5, ObjectDataSources, DataSet, WCF, asp.net update panel, JavaScript ,JSON, 3rd Party tools. The application is supposed to accomplish a really scalable / easily maintained / robust application / integrations, and to make sure that my services are created using a format that can be understood by other systems. The problem is, this application is about 70% complete but now I was wondering if the following would cause us future issues, I’m using a DataSet and a DataTable to (get /set) the data (form /to) the stored procedure in the database using the ObjectDataSources and was wondering if this would prevent my application from achieving the above goals. Actually, I am not anti-OO. I write lots of classes for different purposes, but I didn’t use the entity objects(custom business entities) instead of the previous way because I have a large database that may contain 50 tables and I was just afraid to create entities for each table and then in the future if I need to change the schema of the database, it might cause a huge affect on the application ?

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• Using OpenSessionInViewInterceptor with Hibernate and JSF 2

  - by sammy

  I'm building an application in Hibernate, Spring and JSF2 using only annotations. How can I take advantage of OpenSessionInViewInterceptor found in Spring to catch any hibernate session that might open within a bean? I'm trying to elegantly solve the common “failed to lazily initialize a collection of role: your.Class.assocation no session or session was closed.” problem when trying to read from a yet uninitialized list of POJOs inside another POJO (A Tag entity retrieved by a DAO that contains a List of Project objects I want to read). I've found this: http://www.paulcodding.com/blog/2008/01/21/using-the-opensessioninviewinterceptor-for-spring-hibernate3/ but failed to make use of it in my environment. Please provide a detailed answer, as the Internet is full of foggy, unhelpful tutorials. I'll also be greatful for an alternative solution, given a step-by-step instruction is provided.

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• Convert From Custom List to List of String

  - by Paul Johnson

  Hi all I have the following code: Public Shared Function ConvertToString(ByVal list As IList) As String Dim strBuilder = New System.Text.StringBuilder() Dim item As Object For Each item In list strBuilder.Append(obj.ToString()) strBuilder.Append(",") Next Return strBuilder.ToString(strBuilder.Length - 1) End Function The intention is to convert an IList of custom objects to a string equivalent comprising each element in the Ilist. Unfortunately I can't seem to find a way to get the underlying data of the custom object, and of course as in the above example, using object simply gives me a string of types definitions, rather than access to the underlying data. Any assistance much appreciated. Paul.

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• How to extend WPF hit testing zone for a Path object.

  - by user275587

  Wpf hit testing is pretty good but the only method I found to extend the hit zone is to put a transparent padding area around your object. I can't find any method to add a transparent area arround a Path object. The path is very thin and I would like to enable hit testing if the user clicks near the path. I can't find any method to extend the path object with a transparent area like the image below : I tried to used a partially transparent stroke brush but I ran into the problem described here : http://stackoverflow.com/questions/1412833/how-can-i-draw-a-soft-line-in-wpf-presumably-using-a-lineargradientbrush I also tried to put an adorner over my line but because of WPF anti-aliasing algorithms, the position is way off when I zoom in my canvas and interfere with other objects hit-testing in a bad way. Any suggestion to extend the hit testing zone would be highly appreciated. Thanks, Kumar

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• create xml from object

  - by Gannesh

  Basically i want to create XMLDesigner kind of thing in Flex, using which user can add/edit components and properties of view/dashboard. i am storing view structure in a xml file. i parsed that file at runtime and display view. How to convert an object (having properties and sub-objects) to xml node (having attributes and elements) and add that xml to the existing xml file. so that next time when i parsed xml file i'll get that new component in my view/dashboard. for e.g, object structure of component in xml file : <view id="productView" label="Products"> <panel id="chartPanel" type="CHART" ChartType="Pie2D" title="Productwise Sales" x="215" y="80" width="425" height="240" showValues="0" > </panel> </view> Thanks in Advance.

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• SQL 2008 Database tuning advisor won't start

  - by Andrew Hancox

  For some reason I can't get DTA to connect to my development machine. It connects to a remote DB just fine but when I point it to my dev machine I get an error saying: Failed to initialize MSDB database for tuning (exit code: -1073741819). I'm pretty sure it's not a permissions issue since I've used profiler to capture what it's doing and all of the commands it's run so far look fine and are being run under my account which is associated with the sysadmin role, when I run them in sql management studio they go through fine. I'm pretty convinced that the problem is related to creating the objects in MSDB that are used by DTA but I tried creating these manually (I found scripts on the web) and it just seems to push the problem along the line slightly. I'm going out of my mind - have even tried reinstalling SQL but that's not fixed it. I'm using SQL 2008 with SP1 (10.0.2531) on windows server 2008 (patched up to date). SAVE ME!!!!!

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• Drop custom jQuery UI draggable in FullCalendar plugin?

  - by ropstah

  I need to be able to drop custom jQuery UI draggable objects on the FullCalendar plugin. How can this be done? $(document).ready(function() { $('.plannable_items li').draggable(); $('#fullcalendar').fullCalendar({ //onDrop : function(dropObject, dragObject) { } //This would be the solution ofcourse, however this doens't exist... }); }); <div id="fullcalendar"></div> <ul class="plannable_items"> <li>Item</li> <li>Item</li> <li>Item</li> </ul> Any help would be greatly appreciated!

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• Inclusion Handling in MVC 2 / MVCContrib

  - by mnemosyn

  I'd like to improve my page by combining and minifying javascript and CSS files. Since MVCContrib already contains a project called IncludeHandling, I took a look at that which unfortunately left me with unanswered questions: There is quite a set of interfaces and objects involved in the process. Now I'm using Ninject.Mvc, but it seems that MvcContrib.IncludeHandling is using some additional (home-brewed?) DI? Can I work around this? Has anybody used this and can share some experiences? Secondly, advice that is often heard is to put static content on different domains so the request does not contain cookies and the like, making it much easier for the server to handle the request. But how can I combine this with automatic inclusion handling - isn't that necessarily served in the same application? EDIT: Figured that there is really just a single resolve call in the whole thing, i really wonder why they use DI for that... Thinking about a fork there...

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• Object as an array

  - by owca

  I need to create class Dog and PurebredDog extending Dog. Problem is that Dog can be at once single object and array of objects (Dogs and PurebreedDogs : Dog pack[]={new Dog(76589,"As","black",18, "Ann","Kowalsky"), new PurebreedDog(45321,"Labrador","Elf","black",25, "Angus","Mati","Barbara","Smith"), new Dog(102467,"Gamma","brown",89, "Josh","Coke"), new PurebreedDog(9678,"York","Theta","brown",8, "Emka","Figaro","Alice","Cat")}; for(int i=0; i < pack.length; i++) System.out.println(pack[i]+"\n\n"); How to write proper constructor for Dog ?

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• Read and write into a file using VBScript

  - by Maddy

  How can we read and write some string into a text file using VBScript? I mean I have a text file which is already present so when I use this code below:- Set fso = CreateObject("Scripting.FileSystemObject" ) Set file = fso.OpenTextFile("C:\New\maddy.txt",1,1) This opens the file only for reading but I am unable to write anything and when I use this code:- Set fso = CreateObject("Scripting.FileSystemObject" ) Set file = fso.OpenTextFile("C:\New\maddy.txt",2,1) I can just use this file for writing but unable to read anything. Is there anyway by which we can open the file for reading and writing by just calling the OpenTextFile method only once. I am really new to VBScript. I am only familiar with C concepts. Is there any link to really get me started with VBScript? I guess I need to have a good knowledge of the objects and properties concepts.

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• Implicit typing of arrays that implement interfaces

  - by Sir Psycho

  Hi, I was under the impression that the C# compiler will implicitly type an array based off a type that they can all be implicitly converted to. The compiler generates No best type found for implicitly-typed array public interface ISomething {} public interface ISomething2 {} public interface ISomething3 {} public class Foo : ISomething { } public class Bar : ISomething, ISomething2 { } public class Car : ISomething, ISomething3 { } void Main() { var obj1 = new Foo(); var obj2 = new Bar(); var obj3 = new Car(); var objects= new [] { obj1, obj2, obj3 }; } I know that the way to correct this is to declare the type like: new ISomething [] { obj1, ...} But I'm after an under the covers type help here :-) Thanks

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• Is there a JSON parser for VB6 / VBA?

  - by Ben McCormack

  I'm trying to consume a web service in VB6. The service (which I control) currently can return a SOAP/XML message or JSON. I'm having a really difficult time figuring out if VB6's SOAP type (version 1) can handle a returned object (as opposed to simple types like string, int, etc.). So far I can't figure out what I need to do to get VB6 to play with returned objects. So I thought I might serialize the response in the web service as a JSON string. Does a JSON parser exist for VB6?

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• Persist an object that is not marked as serializable

  - by lasseeskildsen

  Hi, I need to persist an object that is not marked with the serializable attribute. The object is from a 3rd party library which I cannot change. I need to store it in a persist place, like for example the file system, so the optimal solution would be to serialize the object to a file, but since it isn't marked as serializable, that is not a straight forward solution. It's a pretty complex object, which also holds a collection of other objects. Do you guys have any input on how to solve this? The code will never run in a production environment, so I'm ok with almost any solution and performance.

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• Django loading mysql data into template correctly

  - by user805981

  I'm new to django and I'm trying to get display a list of buildings and sort them alphabetically, then load it into an html document. Is there something that I am not doing correctly? below is models.py class Class(models.Model): building = models.CharField(max_length=20) class Meta: db_table = u'class' def __unicode__(self): return self.building below is views.py views.py def index(request): buildinglist = Class.objects.all().order_by('building') c = {'buildinglist': buildinglist} t = loader.get_template('index.html') return HttpResponse(t.render(c)) below is index.html index.html {% block content%} <h3>Buildings:</h3> <ul> {% for building in buildinglist %} <li> <a href='www.{% building %}.com'> # ex. www.searstower.com </li> {% endfor %} </ul> {% endblock %} Can you guys point me in the right direction? Thank you in advance guys! I appreciate your help very much.

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• Core dump equivalence for Java

  - by m3rLinEz

  So far I have learned about generating thread dump and heap dump using jstack and and jmap respectively. However, jstack thread dump contains only texts describing the stack on each thread. And opening heap dump (.hprof file) with Java VisualVM only shows the objects allocated in the heap. What I actually want is to be able see the stack, to switch to particular stack frame, and watch local variables. This kind of post-mortem debugging can be done normally with tools like WinDbg, gdb and a core file (for a native C++ program.) I wonder if such 'core' file (which will allow me to debug in non-live environment) exists in Java?

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• How can I access the ListViewItems of a WPF ListView?

  - by David Schmitt

  Within an event, I'd like to put the focus on a specific TextBox within the ListViewItem's template. The XAML looks like this: <ListView x:Name="myList" ItemsSource="{Binding SomeList}"> <ListView.View> <GridView> <GridViewColumn> <GridViewColumn.CellTemplate> <DataTemplate> <!-- Focus this! --> <TextBox x:Name="myBox"/> I've tried the following in the code behind: (myList.FindName("myBox") as TextBox).Focus(); but I seem to have misunderstood the FindName() docs, because it returns null. Also the ListView.Items doesn't help, because that (of course) contains my bound business objects and no ListViewItems. Neither does myList.ItemContainerGenerator.ContainerFromItem(item), which also returns null.

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• NSButton argument binding doesn't pass argument?

  - by Jeff

  I have a NSCollectionView with a NSButton in the collection view item. The xib's owner is set to my BatchListViewController and the controller has the method @interface BatchListViewController : NSViewController -(IBAction)another_click; @end I set the binding for target to be: This works fine but I also want to send the underlying model to the another_click method. According to the Apple docs, The objects specified in the argument bindings are passed as parameters to the selector specified in the target binding when the NSButton is clicked. So I set the binding for argument to be: This runs fine if I keep the selector method's signature the same another_click: but if I change it to -(IBAction)another_click:(id)arg; I get the dreaded error: BatchListViewController another_click]: unrecognized selector sent to instance What am I doing wrong? Apple's docs say this is possible but I haven't been able to find an example of this working. Even other SO threads are saying this isn't possible but that can't be right.

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• Using multilingual and localeurl in django

  - by Dmitry A. Erokhin

  Using dajngo-multilingual and localeurl. Small sample of my main page view: def main(request): #View for http://www.mysite.com/ name = Dog.objects.all()[0].full_name #this is a translated field return render_to_response("home.html", {"name" : name}) Entering http://www.mysite.com/ redirects me to http://www.mysite.com/ru/ and "name" variable gets russian localization. For now it's ok... But... Entering http://www.mysite.com/en/ shows me same russian loclized variable. During my experiments with debuger I've discovered: request.LANGUAGE_CODE is changing properly according to /en/ or /ru/ url suffix (thanx to localeurl) invoking multilingual.languages.set_default_language() makes "name" variable change loclization The question is: should I change language of django-multilingual to request.LANGUAGE_CODE in each of my view myself, or it must be solved automaticly and I've done something wrong?

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• Removing duplicates without overriding hash method

  - by Javi

  Hello, I have a List which contains a list of objects and I want to remove from this list all the elements which have the same values in two of their attributes. I had though about doing something like this: List<Class1> myList; .... Set<Class1> mySet = new HashSet<Class1>(); mySet.addAll(myList); and overriding hash method in Class1 so it returns a number which depends only in the attributes I want to consider. The problem is that I need to do a different filtering in another part of the application so I can't override hash method in this way (I would need two different hash methods). What's the most efficient way of doing this filtering without overriding hash method? Thanks

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• Unable to remove master -> child subform links in microsoft access 2003

  - by Doug

  Hi, I am having an issue removing the master - child link fields in an access subreport data form. I have tried every avenue to remove them, using the properties window of the subreport as well as the link wizard. I have also deleted the subreport from the database and then gone as far as re-importing the existing objects into a new access instance. As soon as I re-added the subform back in and name it the same name the link fields show back up. Something is apparently corrupt, but I have run out of ideas at this point on how to clear them. Any Ideas would be appreciated. Thanks Doug

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• How to read in text from the visual studio debug output window

  - by Jeremy Bell

  I've read several articles that tell you how to add text to the output window in visual studio from within an Add-On (specifically, a visual studio 2008 integration package, via the visual studio 2008 SDK 1.1), but no examples of how to read text from the output window. My goal is to parse text from the debug output window while debugging a certain application (TRACE output and possibly stdin/stdout). The IVsOutputWindowPane interface has no methods for reading in text from the output window. The documentation seems to imply that it is possible, but it doesn't provide an example: http://msdn.microsoft.com/en-us/library/bb166236(VS.80).aspx Quote: In addition, the OutputWindow and OutputWindowPane objects add some higher-level functionality to make it easier to enumerate the Output window panes and to retrieve text from the panes. Preferably I'd like to be able to subscribe to an event that fires when a new line of text arrives, similar to a StreamReader's asynchronous reads.

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• Problem using SQLDMO/Vb6 against SQL Server 2008

  - by E.J. Brennan

  I have a client, that uses SQLDMO for a portion of a custom application that was written against SQL Server 2000, and they recently upgraded to SQL Server 2008. The majority of the app still runs fine (doesn't use SQLDMO), but the admin functions which rely on SQLDMO stopped working. I installed the SQL2005 backward compatibility pack, and now SQLDMO partially works, i.e. I can run "select" type queries, but any "Update" queries fail with the error message: to connect to the server you must use SQL Server management studio or sql server management objects (SMO) Any thoughts? Should the backward compatibility pack give me ALL the functionality back, or is this a known issue? BTW: I realize SQLDMO has been deprecated and will go away next release, none-the-less I need to do what I can to solve the problem at hand.

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• Marshaling an array of IntPtrs in C#

  - by mcoolbeth

  From safe, managed code in C#, I would like to call a function in a C API that receives an array of pointers (void**). I have the corresponding managed array of IntPtr objects, but the Marshal methods advertised in the documentation at MSDN do not seem sufficient to provide and IntPtr to an unmanaged block of memory with the correct content. I had hoped to obtain an IntPtr with 'Marshal.AllocHGlobal' and then assign the correct content using 'Marshal.Copy', but it seems the function has not been overloaded for an array of IntPtr. Any thoughts on the best way to do this? Thanks in advance.

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• Adding a sortcomparefunction to Dynamic Data Grid in flex

  - by Tom

  Hi, I am trying to create a dynamic datagrid in Flex 3, I have a list of columns a list of objects which correspond to datapoints for those columns which I fetch from a url. While the grid works perfectly fine the problem is that sorting on the columns is done in lexical order. I am aware that this can be fixed by adding a sortcomparefunction to a column, which is not easy for this case. I have tried doing var dgc:DataGridColumn = new DataGridColumn(dtf); f1[dtf] = function(obj1:Object, obj2:Object):int { return Comparators.sortNumeric(obj1[dtf],obj2[dtf]); }; dgc.sortCompareFunction = f1[dtf];` But the problem is that the function object that I am creating here is being overwritten in every iteration (as I am adding columns) and eventually all the columns will have sorting done only on the last column added. Suggestions please.

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• serializing JSON files with newlines in Python

  - by user248237

  I am using json and jsonpickle sometimes to serialize objects to files, using the following function: def json_serialize(obj, filename, use_jsonpickle=True): f = open(filename, 'w') if use_jsonpickle: import jsonpickle json_obj = jsonpickle.encode(obj) f.write(json_obj) else: simplejson.dump(obj, f) f.close() The problem is that if I serialize a dictionary for example, using "json_serialize(mydict, myfilename)" then the entire serialization gets put on one line. This means that I can't grep the file for entries to be inspected by hand, like I would a CSV file. Is there a way to make it so each element of an object (e.g. each entry in a dict, or each element in a list) is placed on a separate line in the JSON output file? thanks.

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