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Business logic layer .net (inherit from datatable or not)

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  • 17-12-2008 11:46pm
    #1
    JimmyCrackCorn!
    Closed Accounts Posts: 752 ✭✭✭


    Quick query.

    I am dealing with an application that relies heavily on search.

    What do you people think of the approach of a inheriting from datable and tablerow instead of building a list? Allowing me to pass it as a data source.


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    #2
    JimmyCrackCorn!
    Closed Accounts Posts: 752 ✭✭✭JimmyCrackCorn!


    Ok so no one cares or has an opinion of inheriting from datatable and datarow when building business objects?


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    #3
    nialo
    Registered Users Posts: 610 ✭✭✭nialo


    Id almost always use a list over a dataset. design my own paging and search functions to minimum page load.


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    #4
    stephenlane80
    Registered Users Posts: 163 ✭✭stephenlane80


    Well it depends on the application,

    If you have one datasource (database) then the easiest and fastest method of communication is the dataset, and a dataset is very easily handles in the business tier,

    The probelms start when you have say a legacy datasource, a database, and and something like a web service to deal with.

    If you want to construcnt some business logic with these data sources, then you will need to create business objects by hand so you that are left with a homogenous set of collections (lists, vectors etc.) you can deal with in the business tier.

    Even if just to future proof you application, it is good practive to use simple native collections rather than dealing with relational objects in your application,

    hope this makes since to you !!

    Steve


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    #5
    JimmyCrackCorn!
    Closed Accounts Posts: 752 ✭✭✭JimmyCrackCorn!


    Perfect sense

    Thanks the opinions appreciate and im probably going to stick to good old native lists after all.


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    #6
    Ginger
    Registered Users Posts: 2,931 ✭✭✭Ginger


    Keep database objects in the data layer

    Use Generic Lists of objects List<T> and databind them to your controls for example

    Normally in the data layer I have a private method that fills the object based on a DataRow and returns the object. So what happens is that my data layer sends common objects to the business layer and business layer sends them back..

    Simply enough if I change the DAL it doesnt matter to the business layer as it just deals with the objects..


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