UIMA Ruta Check Feature of sub Annotation - uima

Question

Is it possible to make a rule to match the value of a FEATURE in an annotation that is a child of another Annotation?
Example:
Annotation Person
Annotation Doctor
Feature TYPE: xyz
something like Person.Doctor{FEATURE("TYPE","xyz")}
Also is it possible to create a rule that matches a FEATURE in an annotation that is PARTOF another annotation?
|-----------A1------------|
|-----A2-----| |---A3----|
Make a rule where
A3{FEATURE("X","1")} but also A3{PARTOF(A1)}
Thank you!

Answer 1

Assuming that there is a type Doctor and its parent type called Person which defined a feature kind of type uima.cas.String, you can simply write:
Doctor.kind=="xyz";
Doctor{Doctor.kind=="xyz"};
d:Doctor{d.kind=="xyz"};
Doctor<-{Person.kind=="xyz";};
Some short explanation of the label expression d: and the inlined rule as condition (<-{}). The label expression introduces a local annotation variable within the scope of the rule. In the above example d:Doctor matches on a annotation of the type Doctor and assigns it to a new variable called d. This variables can then be used in other parts of the rule in order to refer to this specific annotation. In the second rule, no label expression is used and the annotation is refered to by using the type (Doctor.kind). Here, the annotation is resolved anew in the context of the match of the rule, which could lead to a different one in case there are several annotations of the type Doctorwith the same offsets.
The inlined rule as condition works as a complex condition. The rule element Doctor matches only if the rule Person.kind=="xyz"; is able to match within the context/offsets/span of the matched Doctor annotation.
Concerning the second part of the question:
You cannot directly access the annotation which is used in a PARTOF condition because none is used actually. You need to match on the annotation in order to access its features. It depends on which annotation coveres which one, and which annotation should be checked for the feature value. Here are some examples:
a:A3{PARTOF(A1),a.x==1};
A1.x=="1"{CONTAINS(A3)};
A1<-{a:A3{a.x=="1"};};
DISCLAIMER: I am a developer of UIMA Ruta