[Seaside] GOODS Updating a Collection inside of a Dictionary node.
s001 at landr.net
Tue May 18 16:39:56 CEST 2004
Ben Schroeder wrote:
>>I've got GOODS installed and am tinkering with it. I have a usage
>>question. I've created a root as a Dictionary. With values as Ordered
>>Collections. Each Ordered Collection corresponds to a table in an
>>RDBMS, that I'm converting to Squeak.
>>Each item in the Collection is an array representing a tuple or row from
>>the table. My question is: how would I update an array item in the
>>Ordered Collection. Is there a better way, than
>>1) retrieving the entire collection: db root at: 'foo'
>>2) changing on of the items. someCollection at: x put: y
>>3) writing the collection back to the dictionary. db root at: 'foo'
>This is how I would do it, but step (3) shouldn't be necessary. You can say
> someCollection := db root at: 'foo'.
> someCollection at: x put: y.
> db commit.
>and the commit should pick up the new contents of the collection.
This implies that the database connection should remain open during
the session, correct?. and NOT closed after every read like I was
>Also, the GOODS client uses proxies that only load objects when needed, so
>step (1) should not be too expensive: it would probably load the
>collection's list of the objects that were in it, but not all of the objects
>Hope this helps,
>Seaside mailing list
>Seaside at lists.squeakfoundation.org
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