Oscar Picasso wrote:
>>I am also learning Cayenne and Tapestry 4 at the moment. The application
>>I am currently on has one DataContext in my ASO application scope class.
>>
>>
>
>What is an ASO application?
>
>
Look here http://jakarta.apache.org/tapestry/UsersGuide/state.html#state.aso
>
>
>>I am not sure what you mean by DataContext growth by retrieving from it.
>>I guess growth can be controlled.
>>
>>
I am sure Andrus and others will help you on that. bob
>
>Lets's say I have
>Person
>{
> Person mam;
> Person dad;
> List<Person> children;
>}
>
>// Actually execute some query with the data context.
>Person albert = dao.findByName("Albert")
>
>At this point, my understanding is that albert.children are not in memory.
>Then if i do something like:
>
>for(Person child: children)
>{
> do somthing with child;
>}
>
>The children are loaded in memory, if I keep looking for the children of the
>children and so on, each time more persons are loaded in memory.
>
>Am I right?
>
>If that the case, for some big potential graphs, at some point you end up with
>thousands or millions of Objects/Persons in memory if you use the same
>DataContext.
>
>I don't know how Cayenne deals with this situation. Does it discard the least
>recently used Objects, does it perform some kind of caching, or do we need to
>keep track of the Object creation to avoid a potential OutOfMemoryException.
>
>Oscar
>
>
>
>
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