Architecture ::mean By Concret Class And Domain Objects&use For Respositary?
Oct 29, 2010I am using Interface for Respositary.where these can be best used.Also googling to understand these.
What do mean by concret class and domain objects?
I am using Interface for Respositary.where these can be best used.Also googling to understand these.
What do mean by concret class and domain objects?
what is considered a many-to-many relationship in a domain model class ? I mean how to implement a many-to-many relationship in a domain model class ? In SQL this is represented by a link table between two table but how this is represented in a domain model driven application ?
View 1 RepliesAll the users of my system get a common Id (SystemUserId). There are predefined roles/groups in the system. One user can be belong one or more of these groups. We are populating the menu/dashboard at runtime according to logging credentials.All common details (properties) of group are stored in main table (SystemUser) and specialized details are stored in relavant tables.(Teacher/Student). My solution already has classes called, SystemUser, Teacher & Student.
Problem:My system should support new group addition. (eg-: Auditor)This should support new properties to be added to SystemUser/Teacher/Student or any other new group added by the Customer at runtime.
know whats is happening and why its throwing an error (it does not find GetBrokenRules method because its List) but the reason i posted this question here is to ask for a better design, can anybody guide me here please?i am working on Facilities class (List..../Building/Floor) rror:Error 3System.Collections.Generic.List' does not contain a definition for 'GetBrokenRules' and no extension method 'GetBrokenRules' accepting a first argument of type 'System.Collections.Generic.List' could be found (are you missing a using directive or an assembly reference?)
View 2 RepliesI want to know what is the advantages of using aggregates in c# for design patterns.
suppose i have tree tables
Member(M_Id,M_Info)
Bid(B_Id,B_Info,M_Id,Item_Id)
Item(Item_Id,Item_Info)
"One member can place more than one bid on more than one item."
so there is one to many bidirectional association between Bid and Member table.
And one to many association between bid and item table Now According to defination of aggregates in this case Item table is the root of aggregate item and item has aggregation with bid table.
and bid table holds unidirectional reference to member table and hence only bid table has access over member table.
But ultimately this will also map in database same as without using aggregate then what is use of aggregates?
My MVC ASP.NET web application is split up like this:
Web Application Layer Views
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Now, I have a view in the database called "EquipmentWithCableDetails", which contains additional useful information with the equipment details - so I create a class to model that view (in order to be able to read from it). In the code I have that works with that new class, I want to display the EquipmentDescription - but that property only exists on the Equipment class.
I want to allow each user to create a webpage on our domain. example: www.site.com/username
I've created a few pages that get content from database and place it in a folder. I want each user to be able to edit their own data and when they hit "submit". the system will then copy those pages to a folder and modify the code so it read from the right database.
I keep getting "virtual directory not being configured as an application in IIS" errors. Is there any way around this error? I want the process to be 100% automatic so that I don't need to manually go into the server and configure the IIS myself.
I have a block of SQL statements that I like to use as a sort of function.
I was thinking that I could make a class and inherit all of the master function, then add the parts that I need for other sections of the program in a sub class.
The problem is, up to this point I've been programming ASP .Net through visual studio, and it's kind of just programming behind controls. I'm not sure where to put the class/function/method/interface, or whatever we call it.
Of course you probably know that visual studio creates a bunch of partial classes when you do an ASP. Net application... so.. to get access to a function like object, across classes.. use an Interface?
Task is to develop class libraries that can be re-use in projects but assambies should be copy righted. By this I mean developer will not give the code of class libraries to the clients yet they will provide the code of there sites/ applications, these libraries will be used just as internal development libraries. I want to make Business Logic Layer, DAL, Business Objects as class libraries
Q1. How I can control unathorised use of libraries ?
Q2. How to make assamlies non extendable ?
Q3. What security measurs I should take on this.
In a project im working on there are many sql tables containing different ID, Name pairs. Those are represented as Enums in classes that need them however that requires casting since tables contain ID only.Also when serialize the Enum contains the ID not value.
View 3 Replieswhat is the function of abstract class, why design pattern need to build BLL and DAL
anyone give an example for my reference as I am getting strat to build my web-based project
I'm creating a plugin framework in asp.net. On application_start I am creating a single app domain called "SandBoxed". When a user uploads or activates an assembly they want to use, I want to create this assembly in the "SandBoxed" app domain. When a user decides to remove an assembly, then I want to unload and reload(with rest of activated assemblies) the SandBoxed app domain without restarting the root app domain. From all the examples I've seen, an app domain is Created, assemblies created in this app domain, and then the app domain is UnLoaded, ALL in the same method. How do I persist this app domain or retrieve it by name so that I can unload it after creation? I dont see an AppDomain.GetDomain
View 2 RepliesBelow is my class file.
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I 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 RepliesSee in below I have writtine a
1. Singleton class Emp1 with Display Method and
2. Static Class with Static Method Display.
What is the advantage of singleton class over Static Class with Static members?
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Just wanted to know if a singleton class could be inherited and derived.
View 2 RepliesI'm refactoring an old website that has product search code littered throught the codebehind. I'm trying to encapsulate the search logic into its own class so I've created a Product class with a Search() method. I would like some suggestions about OO best practices so that the class is reusable and maintainable. The questions I have are:
- Should I make the search() method an instance method or make it static? For now the class is just really there to encapsulate my search logic
- If I make it an instance method should it return a list of products or should it populate a member property that I can access like p.Search(); var x = p.ProductList;
- The search method requires upward of 7 parameters of different types, what's the best way to provide them?
- pass them all i.e. p.Search (param1, param2, ..., param7)
- create a SearchParams structure in the class, populate it and pass that i.e. p.Search(searchParams)
- Instantiate a Product object and set properties on it that are used by the Search method i.e. p.ID = 123; etc.... p.Search();
I've used variations of the above before but would like to know what's the best way.
i have the following code:
[Code]....
I was trying to implement as above. How can i call this class from the code behind of my page, and call the methods Open and Close connection ?
How do i instantiate the object ?
I have a single project. and I have two folder in it. In the 1st folder I have a class named Class1 and in the 2nd folder I have a class named Class2. Can anyone tell me how I can access members of Class1 in Class2. I have tried by adding namespace in Class1 and Using that namespace in Class2. But it is giving error. It is easy to access classes or their members from App_Code folder. I don't want to put my classes in app_code folder.
View 3 RepliesI want to undertand and change an existing website which was written long time back. It cntains a lot of code and I dont know where to start as there is no dicumentation.Is there any way by which i can create a class diagram and sequence diagram of the existing one as I want to incorporate all the existing functionalities in the new one and dont miss out anyone. Only way I know is to debug the current application and go through whole of the code individually. Is there any way out by which I can undertand the current application quickly?
View 1 Repliesweather to create each class libaray project for Interface, Service, Model, DTO, Repository ?
View 1 RepliesI need to make a webservice in .net (I know how this works) but then I need to get data out of a database. But my company wants to make it in a way that you can use the system with multiple databases.
So my option was make multiple abstract classes which contains the folowing code (depending on the database type, this would be a SQL database)
public abstract class AbstractDAO<T, Tid>
I've been working my way true the OOP design patterns or Models in VB.NET with some simple databinding etc.
There is one thing that's not very clear to me, let me explain.
How would one merge objects or class objects to have a "one to many" or "many to many" relationship or other more complex databinding?
For example, lets say I have a class NEWS, in this class i have some properties like NewsID, NewTitle, NewMessage, ... and some functions like Function GetAllNews() As List(Of News). Now I have a Class NEWSCATEGORIES, with again some properties like NewsCatID, NewsCatTitle, .... and also a function GetNewsCategories() As List(Of NewsCategories).
How would I get All NewsCategories and related NewsItems true the NewsCategorie Class like for example GetNewsCategoriesJoinArticles() as List(Of ????). I know I can do this with a datareader and then in my webforms loop the datareader, but could this also be done in a typesafe manner?
In page behind classes I am using a private and shared object (list<client> or just client) to temporary hold data coming from database or class library. This object is used temporarily to catch data and than to return, pass to some function or binding acontrol. 1st: Can this approach harm any way ? I couldnt analyse it but a thought was using such shared variables may replace data in it ?2nd: Please comment also on using such variables in BLL (to hold data coming from database) where new object of BLL class will be made everytime.
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What is the use of abstract class design in real time projects
and how to use abstract clases and interfaces
and inheritense concepts
like big shoping portals or content managment,blogs etc