On 29 Oct 2007, at 10:04, Jean Pierre Malrieu wrote:
You have more control if you create the displayGroup in your code
(for example in the component constructor, or in initialization for
your component).
First create a EODatabaseDataSource, then the displayGroup.
You can then use setFetchSpecification(EOFetchSpecification
fetchSpec) or setFetchSpecificationByName(String
fetchSpecificationName) on your datasource object. To get the
objects, either set "fetchOnload" or use "qualifyDataSource" on the
displayGroup.
You don't need to create the displayGroup in code to set its fetch
spec, although it can be interesting to do.
I am very much a WO novice, just working my way through Ruzek's "WO
web application construction kit".
WOWACK is a little old now, being WO 4.5; but I still like it the
best of the entry level books.
What I
_thought_ I could do was replace the literal declaration of
fetchSpecification for the WODisplayGroup (which I just copied over
from something auto-generated from WO Builder) with a reference to a
method in the component's Java class that returned an
EOFetchSpecification. That is, instead of this:
dataSource = {
class = EODatabaseDataSource;
editingContext = "session.defaultEditingContext";
fetchSpecification = {
class = EOFetchSpecification;
entityName = Task;
fetchLimit = 0;
isDeep = YES;
};
};
I tried this:
dataSource = {
class = EODatabaseDataSource;
editingContext = "session.defaultEditingContext";
fetchSpecification = activeFetchSpec;
};
Try:
fetchSpecification = "activeFetchSpec";
for your binding, assuming that this is a method in the component
that returns a fetch spec.
Paul
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