[drools-user] Yet another or question

[Geoffrey De Smet]

I got a simple domain model:

  public class Match {
    private Long id;

    private Team homeTeam;
    private Team awayTeam;

    private Day day;

    // getter, setters, ...
  }

And a rule (query) that checks if a team has 2 matches on the same day 
(no matter if they are the home or the away team):

  query "multipleMatchesPerTeamPerDay"
    $team : Team();
    Match($id : id, homeTeam == $team || awayTeam == $team, $day : day);
    exists Match(id > $id, homeTeam == $team || awayTeam == $team, day 
== $day);
  end

But apparently I can't do this?

  unknown:12:50 Unexpected token '=='
  unknown:13:39 Unexpected token '$team'
  unknown:13:57 Unexpected token '=='
  unknown:18:33 Unexpected token 'day'

Line 12 is: Match($id : id, homeTeam == $team || awayTeam == $team, $day 
: day);

Is there any way to avoid having to write a separate rule (query) for 
every combination (home-home, away-home, home-away, away-away)?

Thanks for any help/advice.

--
With kind regards,
Geoffrey De Smet


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