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From Donal Murtagh <domur...@yahoo.co.uk>
Subject Re: Querying across object relationships
Date Thu, 30 Jul 2009 19:10:03 GMT
Basically the classes I'm indexing have the following relationships:

Student 1------* Attendance 1------* Course

The
only root class is Student, i.e. only instances of this class can be
returned from a search. I have a Student object graph that could be
represented in JSON as follows:

{
  name: Bob,
  attendances: [
    {mandatory: N, course: {name: cooking}},
    {mandatory: Y, course: {name: art}}]
}

When I search for an instance of Student using the query:

  "+courseName:cooking +mandatory:Y"

Bob
is returned because, because he attends a course named "cooking" and he
attends a mandatory course (named "art).. But what I really want to
search for is students that attend a mandatory cooking course. It
doesn't appear to be possible to do this based on the responses
provided here:
http://stackoverflow.com/questions/1202422/lucene-query-syntax/1203186#1203186

I
opened the Student index in Luke, exported it to XML and have appended
the results here: 
http://pastebin.com/m6e5bbcf3

I don't really know how to interpret this
myself, but thanks in advance for any further help you can provide.

- Don



      
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