On 7/3/07, Nino Saturnino Martinez Vazquez Wael <[EMAIL PROTECTED]>
wrote:
Hi
I have this setup:
ListView blockContainer = new ListView("blockContainer", model) {
protected void populateItem(ListItem item) {
item.getModelObject();
more code...
}
I've experienced some what I belive unexpected behavior here. So I'll
try to explain what I expect should happen when iterating trough the
listview.
In the above example, I would expect the following
1. listview should to call model.getObject to retrieve the list that
it should iterate over.
2. item.getModelObject should give me the current items modelObject
These two points are also what happens but its the way that they seem to
be implemented that are odd.
It looks like when calling item.getModelObject this is what happens:
model.getObject.get(iterationnumber), I would have expected listview to
extract the list only once?
no, listview doesnt cache the list. but the model can do so. so if you use
loadabledetachablemodel() then your list is only extracted once, and then
cached by the model for the duration of the request.
there are never contracts on how often a component will call getobject() on
the model.
-igor
regards Nino
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