[p2-dev] Extending classes with generics

[Curtis Windatt <Curtis_Windatt@xxxxxxxxxx>]

Recently a number of the query API were
changed to use generics, this causes some annoyances in PDE (as we are
strictly 1.4), but up until now I can work around them.  However,
I have a problem extending a class with generics, specifically MatchQuery

IQuery query = new MatchQuery() {
         
              public
boolean isMatch(Object candidate) {
         
               
      if (candidate instanceof IInstallableUnit)
{
         
               
              if (P2Utils.isBundle((IInstallableUnit)
candidate)) {
         
               
               
      return true;
         
               
              }
         
               
      }
         
               
      return false;
         
              }
         
      };

The compiler complains that I need to
extend the isMatch(T candidate) instead, but I am unable to use generics
in PDE.

As a side note, why was size() removed
from IQueryResult?  It was quite convenient for me when creating arrays
of InstallableUnitDescriptions and other objects that get filled in based
on the query result iterator.  Now I have to grab one of the sets
and ask it for the size.  Not a big deal, but it felt natural to ask
the result for its size, since you can ask it for an iterator.

Curtis