>I would not be too optimistic about the possibilities of switching the
>transport infrastructure transparently. RMI and CORBA differ in several
>important ways:
>
>- IDL, if compared to RMI, gives you only a rather limited interface to
your
>object (e.g you can't write a distributed propertyChange method with a
*real*
>Java event parameter in CORBA - you have to use a struct.). In RMI you can
use
>all Serializable types in Interfaces.
>- CORBA does not allow for downcasting of remote stubs. (you have to use
>narrow, and you loose the object identity in doing so). RMI does.
>- CORBA does not guarantee the object identity of remote references (i.e.
two
>references to the same remote object need not be identical wrt ==; you have
to
>use isEquivalent). RMI does.
>- CORBA does not allow for overloading of methods. RMI does.
>- CORBA cannot transmit null parameters. RMI can.
I would also add:
- CORBA does not allow class (code) downloading. RMI does. At first sight
this may not be important, but as soon as you start to look into
interconnected servers and dynamic environments (via JNDI, LDAP etc) it
becomes crucial.
Imre Kifor
Valto Systems
>Rainer Kerth
>
>---------------------------------------------------------------------------
--
>Rainer Kerth, Consultant
>EMEA Object Technology Practice
>IBM Unternehmensberatung GmbH
>Mobil (+49-171) 766 92 07, E-Mail [EMAIL PROTECTED]
>
>---------------------------------------------------------------------------
--
>Rainer Kerth, Consultant
>EMEA Object Technology Practice
>IBM Unternehmensberatung GmbH
>Mobil (+49-171) 766 92 07, E-Mail [EMAIL PROTECTED]
>
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