Manuel Fiorelli wrote:
I need to get the element type of a feature from a TypeSystem object. I
didn't find any method in the Feature interface. However, when I have a
definition like that
<featureDescription>
<name>foo</name>
<rangeTypeName>uima.cas.FSArray</rangeType>
<elementType>uima.cas.Boolean</elementType>
</featureDescription>
then, foo.getRange().getComponentType() gives uima.cas.Boolean, as I
expected.
But, if the range type is uima.cas.FSList I know no way to get the element
type.
I tried the code
TypeSystemUtil.feature2FeatureDescription(base_foo).getElementType()
but it returns null.
Manuel Fiorelli
Lists don't work the same way as arrays. They don't use the
elementType declaration, so you can't get at their "element
type" using getElementType(). In fact, since you can't declare
an element type, that wouldn't make much sense anyway ;-).
If you tell us what it is your trying to achieve, maybe we
can suggest a workaround.
--Thilo
