Architecture :: Implement The Entity Translation Pattern?
Feb 7, 2011Are there any tools out there which I can use to implement the Entity Translation Pattern? I dont want to write all the mappings by hand.
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Architecture :: Implement Observer Pattern To Refresh Another User Webpage?
Mar 13, 2011I have some problem about observer pattern. My example is webboard system.
My solution wanna be refresh page after another user submit discussion.
I try to use observer but i don't know how to refresh another user's web page.
Web Forms :: Implement Three Tier Architecture In Entity Framework 4.0
Nov 9, 2012Any good example of Three tier architecture in entity framework 4.0 ...
View 1 RepliesPattern For Retrieving Complex Object Graphs With Repository Pattern With Entity Framework
Oct 13, 2010We have an ASP.NET MVC site that uses Entity Framework abstractions with Repository and UnitOfWork patterns. What I'm wondering is how others have implemented navigation of complex object graphs with these patterns. Let me give an example from one of our controllers:
[code]....
It's a registration process and pretty much everything hangs off the POCO class Person. In this case we're caching the person through the registration process. I've now started implementing the latter part of the registration process which requires access to data deeper in the object graph. Specifically DPA data which hangs off Legal inside Country.
The code above is just mapping out the model information into a simpler format for the ViewModel. My question is do you consider this fairly deep navigation of the graph good practice or would you abstract out the retrieval of the objects further down the graph into repositories?
Website Translation Architecture And Implementation?
Mar 18, 2011I'm conducting a project in which a website should have multi-language support.Now, this website is supposed to serve about 500K+ visitors a day, so it must be super-efficient.
I've created a table of parameters {[ID],[Name]} AND a linkage-table {[objectID],[parameterID],[languageID],[value]}. I think it's the best way to deploy multi-language support while having the privilege to translate different parameters for each language.
As far as I know, server's memory is much faster than a physical HDD. Therefore, I'm planning to store ASP.NET Application State objects for my translation architecture.[URL]
Architecture :: Design Pattern And Tier Architecture
Jun 12, 2010I am a newbie to asp.net and work in a firm where the projects are quite small.
I was told by my manager that in a few weeks or so we would be getting a bigger project and I need to be well versed with Design Patterns and N tier arcihtecture.
I would really appreciate if someone could provide me some links and also drop me a few sentences on how this things are useful?
Architecture :: Is Layered Architecture A Pattern
Mar 2, 2010guide in typical 4 layered architecture (having User Interface, Custom Types, Business Logic, Data Access Layer) do we follow some design pattern ? I am not clear what pattern it is or what pattern it should be called.
View 3 RepliesArchitecture :: Entity Model Design Framework And N - Tier Architecture
Dec 25, 2010recently i've studied on ADO.NET's Entity Model Framework and say 'wow' as ORM is one of the fevourite pattern i practice..but suddenly i've come to an ambiguous situation when i'm going to start. i usually follow the following 3-tier architecture..
1. UI Layer
2. BLL - business logic layer
3. DAL - Data Access Layer
a. DTO / DAO
b. Gateway (contains the sql query/stored procedure and connection with DB)
now when i'm going to use the Entity Model Design,where the DBML/ .edmx File should be placed? Because many a times i'm using the DBML file as DTO because of the mapped objects.. in the same time, sometimes DBML ( .edmx file in .NET 4.0) contains CRUD methods and stored procedured method as well as methods with different selection operations,- which should be in Gateway. so where the .edmx file should be placed !?!! IN DTO namespace !? or in Gateway namespace!
moreover sometimes there is no need for the BLL which breaks the rules of inter-layer-communication (UI > BLL > DAL.Gateway)! what makes me confuse is, what should be the ideal n-tier architecture when i'll use the ADO.NET Entity Model Design Framework
Architecture :: Which Pattern You Use?
Sep 17, 2010I wanted to know which all design pattern have you used in your application. Just wanted to see a general idea of most commonly used, popular design patterns. I was going through this site"
http://www.dofactory.com/Patterns/Patterns.aspx
and it has tons of design patters, I have heard about singleton and factory but not others.
So guyz which all popular efficient patterns are there and how would you determine which one suits your app. Can we make a app without a design pattern.
And lastly which one are the most simplest ones out there which are easier to implement.
MVC :: Localization: Route Value Translation - Error "Class 'DictionaryRouteValueTranslationProvider' Must Implement 'Function TranslateToRouteValue"
Jan 29, 2011I have been following this example to enable a localized [URL] Unfortunately the DictionaryRouteValueTranslationProvider class causes be some problems. I have translated the code into VB but this worked only partly and causes the error:
Class 'DictionaryRouteValueTranslationProvider' must implement 'Function TranslateToRouteValue(translatedValue As String, culture As System.Globalization.CultureInfo) As RouteValueTranslation' for interface 'IRouteValueTranslationProvider'. P:Web_DevelopmentAHNDEVRoutingDictionaryRouteValueTranslationProvider.vb
This kind of programming is too advanced for
[Code]....
Architecture :: Use Objectdatasource With MVP Pattern In C#.net?
Mar 22, 2010How can we use ObjectDatasource with MVP pattern in ASP.NET application?
In 3-tier architecture there is no Data Access layer,.in place of DAL, I want to consume Web Services and Request and Response is in the form of Custom objects i.e. BusinessRequest and BusinessResponse class type.
Is it possible to merge all these in one solution, MVP, 3-tier web application, No DAL, Only consuming Web Service , BAL, ObjectDataSource, GridView?
C# - What Pattern Is Layered Architecture In .net ?
Jun 9, 2010I am a asp.net developer and don't know much about patterns and architecture.In my web applications I use 4 layers.Web site project (having web forms + code behind cs files, user controls + code behind cs files, master pages + code behind cs files)
CustomTypesLayer a class library (having custom types, enumerations, DTOs, constructers, get, set and validations)
BusinessLogicLayer a class library (having all business logic, rules and all calls to DAL functions)
DataAccessLayer a class library( having just classes communicating to database.)
-My user interface just calls BusinessLogicLayer. BusinessLogicLayer do proecessign in it self and for data it calls DataAccessLayer funtions.
-Web forms do not calls directly DAL.
-CustomTypesLayer is shared by all layers.
I though it may be MVC or MVP but pages have there code behind files as well which are confusing me.
Trying To Implement A Business Delegate Pattern?
Jun 28, 2010I am using ASP .NET and C#, and using the code-behind-pages concept.I am trying to implement a business delegate pattern in ASP .NET to reduce coupling between the presentation and business tiers.I want to have several ASP pages send information (through asp buttons clicks) to a "business delegate" ASP page, which will in turn send the necessary information to a C# method.The problem is that each button_click event in ASP .NET is directly tied to a C# method. I am having trouble understanding how to separate the presentation and business logic because of that.
View 1 RepliesArchitecture :: Facade Pattern (banking App)?
Sep 20, 2010I just started working on one of the application, bascially its some maintanence work. I see from the application that Facade pattern has been utilized as I see Class Library projects named as Business Facade, Data Facade.
Though I am not redesigning this, but just wanted to know what this pattern is, a simple explanation, use, real world example should be good enough. The application is basically a banking app. I know its diff but if anyone can give me some hints/points as in why the designer chose this pattern (banking app).
Architecture :: How To Use Singleton Pattern In Project
Jun 16, 2010I am working on singleton desing patterns and want some real world example of design patterns.Can you please give me an example how you have used singleton pattern in you project. I would appreciate if you can provide code.
View 3 RepliesArchitecture :: Which Design Pattern Can Be Implemented?
Mar 22, 2011 suggest me a good design pattern for implmenting the following? I have an object say myObject. This myObject is created using few inputs from the UI. After the creation of myObject. This object will be passed to few methods.. like method1(myObject);
method2(myObject);... method5(myObject);etc. Each methods will prepare the input for successive methods call. For example method1(myObject) will set the values necessary for the operation of method2.Then method2(myObject) will set up the values necessary for the operation of method3 and so on..Same object is used as the argument for every method calls.Which design pattern can be implemented?
Using Multiple ObjectContexts In Entity Framework 4 With The Repository/uow Pattern
Jan 17, 2011i am using EF4 and StructureMap in an asp.net web application. I am using the repository/unit of work patterns as detailed in this post. In the code, there is a line that delegates the setup of an ObjectContext in global.asax.
EntityUnitOfWorkFactory.SetObjectContext(() => new MyObjectContext());
On the web page code-behind, you can create a generic repository interface like so ...
IRepository<MyPocoObject> ds = ObjectFactory.GetInstance<IRepository<MyPocoObject>>();
My question is what is a good approach to refactoring this code so that I can use more than one ObjectContext and differentiate between them in the code-behind? Basically i have two databases/entity models in my application and need to query them both on the same page.
Implement Task Recurrence Pattern In .NET Like Outlook?
Sep 7, 2010I have to implement Scheduler like outlook in my .NET application.I have already started working on it but I can't implement Recurrence Pattern. how could i achieve this functionality. how to save task with Recurrence in database? I found this RadScheduler for ASP.NET AJAX but unfortunately this controller is commercial
View 1 RepliesArchitecture :: Repository Pattern - Pros And Cons?
Jul 8, 2010This is possibly the worst kind of religious debate -- a religious debate with practical consequences. But it's one that needs to be had, and I can't seem to fit it in my tiny head. Here are the pros and cons of the pattern as I know them:
Pros:
-Encourages DRY (don't repeat yourself) design in that identical queries are written only once per set of query conditions
-Facilitates unit testing by allowing itself to be abstracted into an interface
-Creates an opportunity for business-level validation
Cons:
-Breaks DRY philosophy in that you're generally repeating your database schema
-In a sense breaks separation of concerns, because the query concerns of the controller and view frequently become the concerns of whoever is maintaining the repository
-Determining what should be a repository and what should be returned as a raw associated ORM entity becomes an ambiguous art
To me it seems like all this stuff should be done at the ORM level, but Entity Framework has much fewer hooks than Linq to Sql does, yet Entity Framework tends to be regarded as being more robust, so it seems that this is by design, and that the designers of EF are in fact encouraging another layer. Are there any tools or anything that I could be using for this? Am I missing something?
Architecture :: Data Validation In Repository Pattern?
Dec 21, 2010I am currently using the 3-tier Repository pattern in my application. Actually it's the first time for me to implement a design pattern at all! i used to put all my code in the so called now presentation layer.
i want to implement data validation, for example, password should not be more than 10 characters and have to contain special characters. Should i put this code in the data access layer? but my data access layer contains methods that take the DTO as a parameter for example
[Code]....
and the same is for other CRUD operations (DELETE and UPDATE), so implementing such validation on the DAL would make me duplicate the code in each and every method that accepts the DataObject as a paramter. Same holds for the business logic layer where i am using it as a proxy between the presentation and the data access layers.
Eventually it has to use the same Data Objects as parameters. This only leaves me with one option which is to do the validation on the Data Object part. But i think this is not the essence of the respository pattern which states that the Data object class should only be a "container" class with no behavior.
Architecture :: What Basically Is Factory Design Pattern
Jul 17, 2010I visited this Link to study about Factory design pattern.http://wiki.asp.net/page.aspx/310/factory/ But i am confused about it still. What i understood is that we must use an Interface to define a class .In the interface we will give the prototype of functions and later on we will define it in concrete class. Is that simple concept is Factory design pattern ?
View 13 RepliesArchitecture :: Singleton Pattern And Abstract Class?
Aug 19, 2010I know what Singleton Pattern means and Abstract class means.What I wanted to know was how would this apply to real world.Could anyone give me any good example or simple explanation.Say I have a simple website, why would I use any of the above if any.Why would it simplify my architechture.
View 3 RepliesArchitecture :: The Respository Pattern In A Layered Web Environment?
Oct 27, 2010I have been looking at the Repository Pattern. While trolling around the net I have come across many implementations and examples. Many of these examples have code like:
ObjectDataSource1.Datasource = CustomerRepository.GetAll();.
Since the Repository basically serves as the Data Access Layer, doesn't this violate the principles of a layered approach by having a UI component accessing the data access layer? If so, my assumption is that I would need to wrap the call CustomerRepository.GetAll() in some business object like:
ObjectDataSource1.Datasource = CustomerManager.GetAll();
where CustomerManager calls CustomerRepository.GetAll();.
If this is correct, what benefit am I getting by wrapping a business class around the Repository? It seems like I am adding an extra layer for the sole purpose of avoiding calling the DataAccessLayer/Repository directly from the UI?
Is it okay for the UI to have access to my Data Access layer in order to read data from the database?
Architecture :: Code In Object Oriented Pattern?
Oct 4, 2010I am creating an authentication service. This service has one of the methods to validate username and password and return a status based on it.
The validation method has bunch of things to check before it can say user is valid. This method has a pseudo code similar to this:
If UserName and Password is correct
If User Account is Locked (due to invalid attempts)
{[code]....
As you can see there are lots of if else statements that I am writing. It looks more like a procedural programming rather than object oriented.How can I fit such kind of code in object oriented pattern?
Using WCF Callback And Web Application To Implement Publish/subscribe Pattern?
Mar 1, 2011I'm trying to use WCF Callback to implement publish/subscribe pattern. I would like to send the message from UserA to UserB or UserA to every clients at the moment. I got an example from here
In my app, I use asp.net as a client to connect wcf service instead and I found a problem when I subscrib to wcf service.
The wcf service does not hold any other clients object. So when I call GetAllClients(_guid), It will return only 1 client which is itself.
Here is the code in asp.net page (i put every control inside updatePanel)
[code]...
Is it possible to implement this publish/subscribe with asp.net and wcf callback? (I already tried on window app and it worked fine)If it is possible, how can I keep all clients that is connecting to WCF Service so I can use those GuId to call callback method.