Gabriel Roldán wrote:
I've got to the situation where I need to model what in xml schema is a list
of simple types, like in:
public interface List<B, AttributeType<B>> extends AttributeType<List>{
public AttributeType<B> getMembersType();
}
my Java5 skills aren't so good, but hopefully you already seen what I want to
mean.
Yes, you could bind an AttributeType to a Collection class, but you
would lose something. Try instead using multiplicity to get what you want.
Often (very) in a gml schema we have:
<simpleType name='listOfString'>
<list itemType='string'/>
</simpleType>
a sample instance:
<someElement xsi:type='listOfString'>string1 string2 string3</someElement>
ListOfStringType has a "member" Descriptor with multiplicity 0:*, the
descriptor is of StringElementType. where StringElementType is bound to
the Java class String and is marked as "inline".
Pefect - that should exactly do what you want, and communicate what is
going on in modeling terms.
the same goes for union (of simple types), but in this case I think we should
have something like:
public interface Union extends AttributeType{ //making it java5 seems too much
for me
public Set<AttributeType> getMemberTypes();
I need to be told more about union, could be you are looking for
something based on associations as with FeatureCollection?
I was trying to figure out if we could avoid creating this two new interfaces
with the current GeoAPI modeling power, but failed, so this message.
Hopefully you'll bring some light into this.
Not sure if that helped, perhaps Justin can explain better?
Jody
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