From: x1 <caldridge@...>
Date: 2006-12-19T12:43:57+09:00
Subject: DRb, Ruby & JRuby - Questions & Issues / dynamic method calls

# I overview after these examples to ease the pain :-)

@@connection = Java::Connect(usr,pass)

# This works:
  @@connection.getForeignListing.getListing(1441).getStreet #=> 123 Candy Ln.

# This works:
  @@connection.send("getForeignListing").send("getListing",
1441).send("getStreet") #=> 123 Candy Ln.

# This works:
  def test(a,b,c,d)
      return @@connection.send(a).send(b,c).send(d)
  end
  test("getForeignListing", "getListing", 1441, "getStreet")

------------------------------------------------
# Does not work:
  def test(a,b,c)
      return @@connection.send(a).send(b).send(c)
  end
  test("getForeignListing", ["getListing", 1441], "getStreet")

test.rb:4:in `send': ["getListing", 5053500] is not a symbol (TypeError)
------------------------------------------------

In summary, I've managed to hook the working versions above within a
class for a DRb server.

The ultimate goal, is to create a generic DRb method that client input
into into method-syntax that the connection can interpret.

For example, as mentioned above, this works:
@@connection.getForeignListing.getListing(1441).getStreet

I'd like to create a method in the DRb server that could accept something like:
java_call = "getForeignListing.getListing(1441).getStreet"
@@connection.send(java_call)

This would allow me to dynamically manage the java methods via DRb.

Thanks so much for your input.