| Network Load Balancing/Clustering (5 replies) |
| ASPFriends.com 'aspngarchitecture' list |
| To all, I was party to a debate between my network/hardware people today. As I am not as knowledgable in the infrastructure arena, I wanted to make sure I had my "ducks in a row" prior to putting in my two cents. Here is the scenario... Example: Single Web server with 15 applications running on it.("NOT" in seperate memory space). One application hoses the server, they all go down. Same for hardwa... |
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| recommended uml designer? (7 replies) |
| ASPFriends.com 'aspngarchitecture' list |
| As my current project grows, i'm beginning to get lost within my constantly evolving object relationships. So far i've just been sketching them out with pencil on big artpaper, but i'm running out of eraser. :) at any rate... The two names I've seen the most are Rational's product and MS Visio, but unfortunatly, both are more than a tad out of my price range. Can anybody suggest something that's f... |
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| Enterprise Architect? (6 replies) |
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| Copied from [aspngvs] to [aspngarchitecture] by darthcarroll@asplists.com I was recently having a conversation on aspngArchitecture, and found out that there would be a uml modeler in vs.net. From hunting around the /vstudio/nextgen/ site a bit, it looks like this tool will only be available in the Enterprise Architect edition. 20 First, is that true? Secondly, I couldn't find any pricing on the s... |
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| DataSet x-portability economics (was something else) (2 replies, VIP) |
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| [I've cc'd Miguel de Icaza (leader of Mono project http://www.go mono.com) to see if they're planning on providing a DataSet implementation in Mono. As a matter of background Miguel, we've been discussing whether the System.Data.DataSet object is hampered for use in public interfaces (that may need to span multiple .NET platforms) by the fact it's not cls compliant. I understand you're planning on... |
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| Datasets in Tiers (WAS: DataReader vs custom collection) (3 replies) |
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| For practical reasons, we already comitted to coupling Business Objects with datasets. In our little application, datasets containered in business objects are traversing all three tiers PL BL DAL and back. So, what I'm about to say might be a little pro dataset and should be digested with caution: I guess what it comes down to, is one fundamental question: What is the dataset, where does it come f... |
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| Datasets and ECC (4 replies, VIP) |
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| A while back someone posted an idea that involved using a single dataset with a single table with a single row as the container for the Class in the ECC object, in that instead of having properties reflecting the fields, one instead just used a datarow. Has anyone put this into practice? Any performance hits with creating all those dataset and table objects? Thanks, Jim |
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| Are code behind files the BLL? (6 replies, VIP) |
| ASPFriends.com 'aspngarchitecture' list |
| I understand the concept and the need for the n tier architecture, but I have to get a couple of things clear in my head. First, can the code behind files in my application be considered to be the BLL or should there be a set of completely separate dll's to hold this logic? It seems that the code behinds sufficiently separate the display and business logic, but it also occurs to me that the code b... |
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| CLS Compliance: WAS Question about breaking up the Middle Tier into a BLL and DAL (3 replies) |
| ASPFriends.com 'aspngarchitecture' list |
| I was studying up on all the different attributes in the system namespace and I came across the CLSCompliant(System.Boolean) attribute. The fact that it's there, it dawned on me, means something. Like, not everything in system is CLS complaint. CLS Complaint code, to me, would relate to possible implementations like the FreeBSD version that's in the works, as well as CE and Talisman (God won't tha... |
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| Static Methods WAS: Question about breaking up the Middle Tier into a BLL and DAL (14 replies, VIP) |
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| I think they work great in the DAL. Original Message From: Robert Lair [mailto:mailinglists@asppages.com] 20 Sent: Monday, August 13, 2001 5:35 PM To: aspngarchitecture Subject: [aspngarchitecture] Re: Question about breaking up the Middle Tier into a BLL and DAL One point about why we didn't separate the BLL and DAL for IBuySpy: IBuySpy doesn't contain any business rules, hence no need for the BL... |
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| Custom data binding, WAS: Question about breaking up the Middle Tier into a BLL and DAL (2 replies) |
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| One issue that I've been struggling with is that of data binding. I would like to be able to entirely isolate the DAL from the BLL and PL, but also be able to take advantage of data binding to display data in the PL regardless of the PL's implementation; that is, I want to have my cake and eat it too. As I currently understand it (correct me if I'm wrong!), one can bind to objects that implement I... |
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| Caching query results in middle tier... (4 replies, VIP) |
| ASPFriends.com 'aspngarchitecture' list |
| i'm starting to look at ways to optimally search for content in my database. i have metadata like 'title', 'keywords', etc. for objects in my db, and i have started using DataSets and DataViews to filter the results of SQL queries (with LIKE %foo% statements). this will cause the entire result of the query (in the DataSet) to be pulled into the middle tier, correct? this won't necessarily be a bad... |
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| DataReader vs custom collection (18 replies, VIP) |
| ASPFriends.com 'aspngarchitecture' list |
| I'd like to get some thoughts/feedback on what you think of creating a custom class collection to pass data between logical layers in our system vs just passing back a DataSet or DataReader. On one hand, we could create a custom class with properties to hold each data column, and then pass a collection of these between layers. This could potentially insulate our BLL from knowledge of ADO.NET speci... |
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| collection (3 replies) |
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| ok, i'm having a brain freeze here on a question that is so simple I don't want to post it. I've got a custom object called "User" I want to return a method of an array of Users called "GetUsers" How do I build an array of users...? here is the psudo code... public Users[] GetUsers() { Users[] arUser; // get a datareader called dr; if ( dr.Read() ){ User usr new User(); usr.FirstName dr["FirstName... |
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| threading and the dataset (3 replies) |
| ASPFriends.com 'aspngarchitecture' list |
| Hi All As I put together a number of objects that all rely on and cooperatively work with the DataSet, I had a couple of questions come up. First, I started out by making some of the shared objects (including the DataSet itself) static members of one of my classes in order that they would be freely and easily available to all of the other cooperating classes without having to pass them around all ... |
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| Initializing Global Info (3 replies, VIP) |
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| Hello all, I am new to the world of ASP.NET and wanted some advice. Right now, I have an application where a section of files include a common "setup" file that performs a series of functions that determines where the user is, if they are logged in, etc. It then sets up a series of variables and classes for the pages to use. I have been reading a lot on code behind functionality, custom server con... |
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| Hiding members in derived classes... (17 replies, VIP) |
| ASPFriends.com 'aspngarchitecture' list |
| I've been trying to test the hiding of members in a base class by redefining the member in a derived class with reduced visibility. According to the docs I looked at, the result should be that clients of the derived class should not be able to see the member, but that's not what seems to be happening. An example...if I create a class that derives from System.Web.UI.WebControls.TextBox, the Text pr... |
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| Follow-up: connection string w/in Win32 service or .exe (3 replies, VIP) |
| ASPFriends.com 'aspngarchitecture' list |
| i had read the " Where to put CN String WinForm & WebForm app?" thread the other day, but it hadn't sunk in until i hit the same problem with our project. we have multiple Win32 services that need to be configured for the DAL connection string, as well as for server names for MSMQ message queues. i definitely don't want to hard code these strings in the services, and besides, i want to be able to ... |
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| Architecture Question (5 replies, VIP) |
| ASPFriends.com 'aspngarchitecture' list |
| Hi all, I've just started looking at .NET so I apologise for asking a question that was probably asked aeons ago. My question is regarding the architecture of an enterprise .NET app as compared to the architecture of a .NET app. Are we still using the 3 tier logical model to separate an applications services into Presentation, business and data? Below I have an enterprise application written using... |
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| Design discussion (7 replies) |
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| Hi, Okay, here is a design/architecture question that will involve theory and will surely seem elementary to some of you. If it is too elementary, please forgive me but this is a problem that has bothered me for a long time when considering client/server design. I have an application that I have created trying to adhere to a rational/logical n tier design. It is an APS.NET application using beta 2... |
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| Singleton question (5 replies, VIP) |
| ASPFriends.com 'aspngarchitecture' list |
| Hi folks, I have a classic singleton question: in the good old days of C (or even in Java) I could define a class as a singleton, whenever I found it appropiate. E.g. using Java servlets I declared a singleton and could be sure that all servlets/JSP used the same Singleton instance (except of configurations which use several virtual machines). It seems that with .NET things are not that simple any... |
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| Architecture: Duwamish 7 and IBuySpy (5 replies) |
| ASPFriends.com 'aspngarchitecture' list |
| I have recently been looking in some detail at the design of Duwamish 7, Microsoft's sample app used as an example for 'The Architecture of .NET Applications' at Tech Ed. This appears to be a simplistic port of the Duwamish 4.0 ASP/DNA application, without much thought about how the new capabilities of .NET (esp. ADO.NET) change the ground underneath the app. The basic pattern is "BusinessFacade" ... |
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| ECC (Engine-Collection-Class) Design Patter question (4 replies, VIP) |
| ASPFriends.com 'aspngarchitecture' list |
| Hello, Background info: I heard of ECC in one of the posts on this group and look into it. I found it to be very interesting and after reading about it, decided to see how some of my completed application could have been done using it. My thoughts and questions: Although ECC provides a very nice and consistent interface I quickly found some performance problems. Some of the functionality that my a... |
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| Help with Page.LoadControl passing property values. (2 replies, VIP) |
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| Copied from [aspngibuyspy] to [aspngarchitecture] by darthcarroll@asplists.com I'm trying to work with the Page.LoadControl method without using a baseclass as in the portal implementation. I have sucessfully created an object of type 'control', loaded a control into it, and addressed some of the properties. However, what I am really interested in doing is passing property values form the host pag... |
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| *.config(Connection String) (3 replies) |
| ASPFriends.com 'aspngarchitecture' list |
| Hi All I am looking into obtaining connection string from the *.config file. And I am comfortable to get it if I have just one database to point. But if I have couple of databases which I have to work with in the same project, how can I have couple of connection strings in the .config file and how can I refer to a particular connection string in my client code. configuration ! application specific... |
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| patterns and implementation (6 replies, VIP) |
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| hey list, I have a few questions about implementation... 1) I have a Connection object which has a "void DataReceived( Object, ConnectionDataEventArgs )" signature event. ( DataEventArgs is derived from EventArgs, and contains a "String Data" property. 2) I have a Message object, and several derived objects from that ( ModeMessage, NoticeMessage, etc ), which all describe different kinds of Data f... |
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