Valentina.GetDatabaseVersion() and remote database

[Stan Busk]

Hi,

Yes, but when opening a remote DB you pass a FolderItem to it, right?  
Valentina is supposed to recognize it is a remote DB as you have  
initiated VDatabase using the server-like constructor. It should work  
then. Anyway the point is it works on the place where you open the  
connection but not from a function you call from where you open the  
connection. I use global properties everywhere so it should work but  
it doesn't. The same happen with OPEN. It works from where you open  
the connection but not from a function you call passing the  
folderitem. I have tried all day and no way. The only possible way to  
open a file is thru a single method in the middle of the connection  
code...That means none of my 15 schema updates can be called.

Stan

> I think you're missing the point of Valentina.GetDatabaseVersion.   
> As I understand it, all that it does is to read some bytes from the  
> file represented by the FolderItem and return the information.   
> This functionality should work no matter how Valentina is  
> initialized.  For a remote database, you cannot of course represent  
> a database on the server as a FolderItem, in general.  Thus  
> Valentina.GetDatabaseVersion does not make any sense in that context.
>
> Unfortunately, the VDatabase interface is misleading.
>
> Charles Yeomans
>
>
>
>
> On Mar 14, 2007, at 2:41 PM, Stan Busk wrote:
>
>> Hi,
>>
>> Strange. The code below works:
>>
>> dbi = mValentinaServer.DatabaseInfo(1)
>> myDb = new myDatabase( mVConnection )
>> f = new FolderItem( dbi.path, FolderItem.PathTypeShell )
>> DBVersion = Valentina.GetDatabaseVersion( f )
>>
>> but as soon as I call Valentina.GetDatabaseVersion( f ) from  
>> inside a method I get a Valentina Exception #-39. In other words,  
>> rather than calling DBVersion = Valentina.GetDatabaseVersion( f )  
>> directly I have that function:
>>
>> Function Database_UpdateSchema( inFile As FolderItem )
>>   Dim DbVersion as Integer
>>   DbVersion = Valentina.GetDatabaseVersion( inFile )
>> End Function
>>
>> I don't understand the point here.
>>
>> stan
>>
>>> On 12/3/07 8:18 PM, "Stan Busk" <maxprog at mac.com> wrote:
>>>
>>> Hi Stan,
>>>
>>>> Are the two last lines of the following code correct?
>>>>
>>>> ---
>>>> mVConnection = new VConnection( aHost, aUserName, aPassword, aPort,
>>>> aTimeOut, aParameter )
>>>> mVConnection.Open()
>>>> mValentinaServer = new VServer( mVConnection )
>>>>
>>>> dbi = mValentinaServer.DatabaseInfo(1)
>>>>
>>>> myDb = new myDatabase( mVConnection )
>>>>
>>>> f = new FolderItem( dbi.path, FolderItem.PathTypeShell )
>>>>
>>>> DBVersion = Valentina.GetDatabaseVersion( f )
>>>> ---
>>>
>>> Not a fact this is correct.
>>> Db already should be registered under VSERVER.
>>>
>>>> I am just trying to get the served DB version. It works fine  
>>>> when the
>>>> database in on localhost but I have doubts that would work on  
>>>> remote
>>>> DBs as well unless Valentina is clever enough to just use the DB  
>>>> name
>>>> and already know what and where to look at. It looks like the  
>>>> Open()
>>>> method is already that clever.
>>>
>>> Right. Open() opens db by name as it is registered under vserver
>>>
>>>
>>> -- 
>>> Best regards,
>>>
>>> Ruslan Zasukhin
>>> VP Engineering and New Technology
>>> Paradigma Software, Inc
>>>
>>> Valentina - Joining Worlds of Information
>>> http://www.paradigmasoft.com
>>>
>>> [I feel the need: the need for speed]
>>>
>>>
>>> _______________________________________________
>>> Valentina mailing list
>>> Valentina at lists.macserve.net
>>> http://lists.macserve.net/mailman/listinfo/valentina
>>
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