SubSonic3 VB.Net Add,Update, FirstOrDefault Problems

问题

I hade build sctive record dal with subsonic3 Vb.net templates. and i am dealing with alot of bugs in the sub sonic dlls.

1)in Add() function: (i have fix) when indx has counter in the db the returnd new key type is decimal the active record fil have an exception "Public member 'Change Type To' n type 'Decimal' not found". i managed to fix this bug. i changed in the activeRecord template the sub

OlD

    Public Sub SetKeyValue(value As Object) Implements IActiveRecord.SetKeyValue
        If value IsNot Nothing AndAlso value IsNot DBNull.Value Then
            Dim settable = value.ChangeTypeTo(Of <#=tbl.PK.SysType#>)()
            Me.GetType.GetProperty(Me.KeyName()).SetValue(Me, settable, Nothing)
        End If
    End Sub

NEW

   Public Sub SetKeyValue(value As Object) Implements IActiveRecord.SetKeyValue
        If value IsNot Nothing AndAlso value IsNot DBNull.Value Then
            Dim settable = CType( value, <#=tbl.PK.SysType#>)
            Me.GetType.GetProperty(Me.KeyName()).SetValue(Me, settable, Nothing)
        End If
    End Sub

2)in Update function() function:(I Have Fixed) the update never do the work . after debuging it apeard that the sql statment of the update never have the "SET" dection of the query its always Like: UPDATE [tableName] WHERE ... It seems there is a problem in the Subsonic.Repository dll -- > IRepository The Dirty Colums not apdated in new object for example :

Dim Cat as db.Category
Cat.Indx=1
Cat.SetIsNew(False)
Cat.Name= 'Motors'
Cat.Update

Why when update there is no DirtyColumns How can i set Column as Dirty?

--Update problem resolved its not a bug.-- Resolved by adding after line 3 : CAT.SetIsLoaded(True) . So when the propety IsLoaded is set to tru any column updated will be added to DirtyColums and thes will be Updated To DB

3) the FirstOrDefault Function : (Couldn't fix) always i meaaaaaaaaan always throw exsiption = "Line 1: Incorrect syntax near '('." from the SubSonic.Linq dll

Pleeeeeeeeeeeease help

Thanks In advance, TheGodfather

回答1:

Firtly, which version of SubSonic3 are you using?

1) Not sure what you are trying to do here.

2) That is not how you update a record, try this...

Dim cat = Category.SingleOrDefault(Function(item) item.CategoryID = 1)
cat.CategoryName = "MOTORS"
cat.Update()

3) Subsonic uses SingleOrDefault() as example above demonstrates.

来源：https://stackoverflow.com/questions/1372275/subsonic3-vb-net-add-update-firstordefault-problems

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vb.net

activerecord

subsonic3