Xapian discuss - Sep 2009 - Ruby Bindings

Hi Guys,

I am trying to implement a weight in ruby.

Using
http://stackoverflow.com/questions/549249/polymorphism-across-c-and-ruby-using-swigand
http://xapian.org/docs/sorting.html as bases I came up with this:

class CoordWeight < Xapian::Weight

  def initialize
     puts "Creating CoordWeight"
     super
  end

  def clone
    CoordWeight.new
  end

  def name
    return "CoordWeight"
  end

  def serialise
   return ""
  end

  def unserialise(un)
    CoordWeight.new
  end

  def get_sumpart(a, b)
    return 1
  end

  def get_maxpart
    return 1
  end

  def get_sumextra(a)
    return 0
  end

  def get_maxextra
    return 0
  end

  def get_sumpart_needs_doclength
     return false
  end
end

By I get:
"allocator undefined for CoordWeight"

Has anyone manged to do this?

Thanks

On Sat, Sep 12, 2009 at 10:44:49PM +0800, Stuart Hall wrote:
> I am trying to implement a weight in ruby.
In 1.0, Weight is only subclassable in Python. You could try
rebuilding the bindings (you'll need SWIG installed); the code is
around line 600 in xapian-bindings/xapian.i -- although whether you'll
have any luck I have no idea.

In 1.1, this is disabled entirely. I can't find a ticket for this, so
I don't know what the current discussion is around this.

J

-- 
  James Aylett

  talktorex.co.uk - xapian.org - uncertaintydivision.org