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From Andrus Adamchik <and...@objectstyle.org>
Subject Re: AW: objectFromDataRow with refresh
Date Sun, 17 Dec 2006 11:27:54 GMT
Hi Peter,

Your solution is the way to go if you are merging data into existing  
rows. If you are doing a copy of the tmp table to the target table,  
always creating new rows, you may do a straight DataRow copy from one  
table to another bypassing object creation.  
org.apache.cayenne.access.DataPort does something similar - you can  
borrow some code from "processInsert" method.

Andrus


On Dec 14, 2006, at 1:56 PM, Peter Schröder wrote:
> hi,
>
> first of all, thank you for the fast and helpfull komments in this  
> mailing-list.
>
> i have another question concerning context.objectFromDataRow():
>
> as you said, it populates the new data through the datacontext if  
> you use refresh=true. is there a possibility to advise cayenne to  
> store the "fresh" data into the database? i need this, because i  
> get the datarow from a tmp-table with the same structure as the  
> master table.
> my workaround is, that i "clean" the object and put all data in it  
> back from the datarow and commit afterwards... i think there must  
> be a smarter solution to this.
>
> kind regards
> peter
>
> -----Ursprüngliche Nachricht-----
> Von: Andrus Adamchik [mailto:andrus@objectstyle.org]
> Gesendet: Montag, 11. Dezember 2006 18:12
> An: cayenne-user@incubator.apache.org
> Betreff: Re: objectFromDataRow with refresh
>
> Hi,
>
> It refreshes any previously cached version of the object with the
> data stored in the passed data row.
>
> Andrus
>
> On Dec 11, 2006, at 5:31 PM, Peter Schröder wrote:
>
>> hi,
>>
>> i am wondering what the refresh param of context.objectFromDataRow
>> does exactly?
>>
>> does it refresh the data of the object in the context, which i can
>> commit with context.commitChanges,
>> or does it fetch refreshed data for the object from the database?
>>
>> kind regards
>> peter
>>
>
>


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