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Questions tagged [business-logic]

Business logic is the abstract thought process behind decision making in human transactions. Translation of business logic into code is one of the major tasks in producing business software.

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How do you keep view logic out of the model and business logic out of the view-model in MVVM?

I can't quite figure out how to get the view model to be notified of changes in the model without adding a bunch of UI specific stuff like INotifyProperyChanged and INotifyCollectionChanged in my model or create tons of different events and do a…
Davy8
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Are middleware apps required to do business logic?

Let's suppose I have a large middleware infrastructure mediating requests between several business components (customer applications, network, payments, etc). The middleware stack is responsible for orchestration, routing, transformation and other…
Miguel Ping
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Domain Driven Design (DDD): Domain Event Handlers – Where to place them?

I am confused about where to handle domain events in an application that is based on the hexagonal architecture. I am talking about the bounded-context-internal domain events, and not about inter-context integration/application/public…
domin
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C# - Usage of transactions in business layer (SQLServer 2005+ , Oracle) - good examples

I am gonna build a service using 3-tier architecture and I am really worried about how to handle operations in a transacted way. I know I have 2 options: IDbTransaction and TransactionScope... but I am not really decided for which one to go,…
Learner
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Dependencies Symfony2

I'm wondering if there is a proper way to check the dependencies. For example I've got a NewsBundle. Now I'll have to check if there is a CommentBundle. If there is one, it should execute a few more Code. Any suggestions?
Flask
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Is business logic subjective?

I have a team lead who seems to think that business logic is very subjective, to the point that if my stored procedure has a WHERE ID = @ID — he would call this “business logic” What approach should I take to define “business logic” in a very…
Toran Billups
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Event Sourcing - where does Domain Logic fit in?

I've just been watching Greg Youngs talk on Event Sourcing, but i'm confused as to where business logic fits in. A simple example: 1) Shopping Cart Created 2) Item Added 3) Item Added 4) Promotional Code - 20% Off Is the Promotional Code…
TBD
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separation of logic and UI in titanium (javascript)

i'm new to appcelerators titanium and javascript and i'm interested in coding an iphone app. i recognized that there is a need of "many" code for creating the UI. that's no problem so far, but i tend to separate that code from my application logic…
mkind
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Best approach to programming highly complex business/math rules

I have to take a piece of data, and apply a large number of possible variables to it. I really don't like the idea of using a gigantic set of if statements, so i'm looking for help in an approach to simplify, and make it easier to maintain. As an…
Erik Funkenbusch
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How to update UI from business layer?

I have a three layer application in C#. In business layer i have many threads that do same job . I want to show the progress of each thread on UI , but i don't have the reference of presentation layer . How can i do this ? What's the best way for…
Mahdi Amrollahi
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Should i use partial classes as business layer when using entity framework?

I am working on a project using entity framework. Is it okay to use partial classes of the EF generated classes as the business layer. I am begining to think that this is how EF is intended to be used. I have attempted to use a DTO pattern and soon…
samsur
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What is the difference between "workflow engine" and "business process management engine"?

I have heard about these two concepts after a lot of time. Such as "windows workflow foundation" and Activiti and jBPM and other project is "business process management engine". Are these two nouns ("workflow engine" and "business process…
lovespring
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cannot implicitly convert type string to char

As I know char is different from string. I give datatype char to a column status in a table. I am stuck here because i am using char first time. here is my code cmd.CommandType = CommandType.StoredProcedure; if (con.State ==…
user2822113
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C# business objects and collections

I'm having difficulty wrapping my head around business objects or more specifically, business object collections. Here's a quick example of what I'm trying to do. If I have an Incident Object, this object can have a number of people involved and…
Mathew
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Business rules in the repository?

Let's assume that an application has all necessary business rules in the model / presentation layer and that they work fine. My question is one of whether or not redundant business rules (i.e. a span of two dates cannot overlap any other existing…
Mayo
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