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Posted to soap-dev@xml.apache.org by P Sreenivasa Rao <ps...@cmcltd.com> on 2001/05/25 15:38:13 UTC

difference between RMI call and Webservice









Hi all,
can anybody explain the difference between RMI call and Webservice like plus points and minus points etc.I konw that RMI is for only Java calls.But Can we compare CORBA or RMI with Webservice.I'm new bee to this webservices.
Thanks in advance.


Regards,
Sreenivas,CMCLtd,India

Re: Virus Warning

Posted by Brett McLaughlin <br...@newInstance.com>.
Sorry.. I'm cleaning that up right now... too many stinking mailing lists :(

-Brett
----- Original Message -----
From: "Scott Nichol" <sn...@computer.org>
To: <so...@xml.apache.org>
Sent: Friday, May 25, 2001 10:23 AM
Subject: Virus Warning


> WARNING TO ALL
>
> If you post to this list and get a response from "Brett McLaughlin" with
an
> attachment, do not open it (at least, if you are on a Wintel machine).
The
> attachment is a variant of the BadTrans virus.  More information is
> available at http://www.europe.f-secure.com/v-descs/badtrans.shtml
>
> Scott Nichol
>
>
>

Virus Warning

Posted by Scott Nichol <sn...@computer.org>.
WARNING TO ALL

If you post to this list and get a response from "Brett McLaughlin" with an
attachment, do not open it (at least, if you are on a Wintel machine).  The
attachment is a variant of the BadTrans virus.  More information is
available at http://www.europe.f-secure.com/v-descs/badtrans.shtml

Scott Nichol

Re: difference between RMI call and Webservice

Posted by Scott Nichol <sn...@computer.org>.
Anne covers the marshalling and transport very nicely.  I would add a couple
of things.  First, RMI is implemented only for Java.  Web services (and
CORBA and COM) can be used from multiple programming languages.  Second,
RMI, CORBA and COM have several capabilities that Web Services do not, such
as remote activation and objects-by-reference.  Third, Web services are not
as completely standardized as RMI, in that while Sun has defined the
capabilities of RMI, Web services standards (SOAP, WSDL, UDDI, etc.) are
still being written and/or approved.  Fourth, FWIW, Microsoft produces
platforms and tools for Web services.

Scott

----- Original Message -----
From: "Anne Thomas Manes" <at...@sun.com>
To: <so...@xml.apache.org>; <so...@xml.apache.org>
Sent: Friday, May 25, 2001 10:06 AM
Subject: RE: difference between RMI call and Webservice


> Sreenivas,
>
> Web services, RMI, CORBA, COM, etc., are all very conceptually similar.
The
> key difference between these various types of service-oriented systems is
in
> the protocols used for communication.
>
> The RMI protocol passes serialized Java objects over JRMP.
> The CORBA protocol passed CDR datatypes over IIOP.
> The COM protocol passes NDR datatypes over DCE RPC.
>
> Web services pass XML data over Web protocols (HTTP, SNMP, etc).
>
> Java objects, CDR datatypes, and NDR datatypes are very efficient binary
> data representations, but they can only be interpreted by like systems.
XML
> is a pretty verbous data representation, but it can be interpreted by any
> application. JRMP, IIOP, and DCE RPC communicate through dynamically
> allocated ports, and they usually get stopped by firewalls. HTTP, SNMP,
> etc., can usually slip right through firewalls.
>
> Regards,
> Anne Thomas Manes
> Sun Microsystems
>
>
> -----Original Message-----
> From: P Sreenivasa Rao [mailto:psrao@cmcltd.com]
> Sent: Friday, May 25, 2001 6:38 AM
> To: soap-dev@xml.apache.org
> Cc: soap-user@xml.apache.org
> Subject: difference between RMI call and Webservice
>
>
> Hi all,
> can anybody explain the difference between RMI call and Webservice like
plus
> points and minus points etc.I konw that RMI is for only Java calls.But Can
> we compare CORBA or RMI with Webservice.I'm new bee to this webservices.
> Thanks in advance.
>
>
> Regards,
> Sreenivas,CMCLtd,India
>
>

Re: difference between RMI call and Webservice

Posted by P Sreenivasa Rao <ps...@cmcltd.com>.
Hi Thomas ,
Thank you for your immediate and valuable reply.
regards,
Sreenivas

----- Original Message -----
From: Anne Thomas Manes <at...@sun.com>
To: <so...@xml.apache.org>; <so...@xml.apache.org>
Sent: Friday, May 25, 2001 7:36 PM
Subject: RE: difference between RMI call and Webservice


> Sreenivas,
>
> Web services, RMI, CORBA, COM, etc., are all very conceptually similar.
The
> key difference between these various types of service-oriented systems is
in
> the protocols used for communication.
>
> The RMI protocol passes serialized Java objects over JRMP.
> The CORBA protocol passed CDR datatypes over IIOP.
> The COM protocol passes NDR datatypes over DCE RPC.
>
> Web services pass XML data over Web protocols (HTTP, SNMP, etc).
>
> Java objects, CDR datatypes, and NDR datatypes are very efficient binary
> data representations, but they can only be interpreted by like systems.
XML
> is a pretty verbous data representation, but it can be interpreted by any
> application. JRMP, IIOP, and DCE RPC communicate through dynamically
> allocated ports, and they usually get stopped by firewalls. HTTP, SNMP,
> etc., can usually slip right through firewalls.
>
> Regards,
> Anne Thomas Manes
> Sun Microsystems
>
>
> -----Original Message-----
> From: P Sreenivasa Rao [mailto:psrao@cmcltd.com]
> Sent: Friday, May 25, 2001 6:38 AM
> To: soap-dev@xml.apache.org
> Cc: soap-user@xml.apache.org
> Subject: difference between RMI call and Webservice
>
>
> Hi all,
> can anybody explain the difference between RMI call and Webservice like
plus
> points and minus points etc.I konw that RMI is for only Java calls.But Can
> we compare CORBA or RMI with Webservice.I'm new bee to this webservices.
> Thanks in advance.
>
>
> Regards,
> Sreenivas,CMCLtd,India

RE: difference between RMI call and Webservice

Posted by Anne Thomas Manes <at...@sun.com>.
Sreenivas,

Web services, RMI, CORBA, COM, etc., are all very conceptually similar. The
key difference between these various types of service-oriented systems is in
the protocols used for communication.

The RMI protocol passes serialized Java objects over JRMP.
The CORBA protocol passed CDR datatypes over IIOP.
The COM protocol passes NDR datatypes over DCE RPC.

Web services pass XML data over Web protocols (HTTP, SNMP, etc).

Java objects, CDR datatypes, and NDR datatypes are very efficient binary
data representations, but they can only be interpreted by like systems. XML
is a pretty verbous data representation, but it can be interpreted by any
application. JRMP, IIOP, and DCE RPC communicate through dynamically
allocated ports, and they usually get stopped by firewalls. HTTP, SNMP,
etc., can usually slip right through firewalls.

Regards,
Anne Thomas Manes
Sun Microsystems


-----Original Message-----
From: P Sreenivasa Rao [mailto:psrao@cmcltd.com]
Sent: Friday, May 25, 2001 6:38 AM
To: soap-dev@xml.apache.org
Cc: soap-user@xml.apache.org
Subject: difference between RMI call and Webservice


Hi all,
can anybody explain the difference between RMI call and Webservice like plus
points and minus points etc.I konw that RMI is for only Java calls.But Can
we compare CORBA or RMI with Webservice.I'm new bee to this webservices.
Thanks in advance.


Regards,
Sreenivas,CMCLtd,India

RE: difference between RMI call and Webservice

Posted by Anne Thomas Manes <at...@sun.com>.
Sreenivas,

Web services, RMI, CORBA, COM, etc., are all very conceptually similar. The
key difference between these various types of service-oriented systems is in
the protocols used for communication.

The RMI protocol passes serialized Java objects over JRMP.
The CORBA protocol passed CDR datatypes over IIOP.
The COM protocol passes NDR datatypes over DCE RPC.

Web services pass XML data over Web protocols (HTTP, SNMP, etc).

Java objects, CDR datatypes, and NDR datatypes are very efficient binary
data representations, but they can only be interpreted by like systems. XML
is a pretty verbous data representation, but it can be interpreted by any
application. JRMP, IIOP, and DCE RPC communicate through dynamically
allocated ports, and they usually get stopped by firewalls. HTTP, SNMP,
etc., can usually slip right through firewalls.

Regards,
Anne Thomas Manes
Sun Microsystems


-----Original Message-----
From: P Sreenivasa Rao [mailto:psrao@cmcltd.com]
Sent: Friday, May 25, 2001 6:38 AM
To: soap-dev@xml.apache.org
Cc: soap-user@xml.apache.org
Subject: difference between RMI call and Webservice


Hi all,
can anybody explain the difference between RMI call and Webservice like plus
points and minus points etc.I konw that RMI is for only Java calls.But Can
we compare CORBA or RMI with Webservice.I'm new bee to this webservices.
Thanks in advance.


Regards,
Sreenivas,CMCLtd,India


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RE: difference between RMI call and Webservice

Posted by Anne Thomas Manes <at...@sun.com>.
Sreenivas,

Web services, RMI, CORBA, COM, etc., are all very conceptually similar. The
key difference between these various types of service-oriented systems is in
the protocols used for communication.

The RMI protocol passes serialized Java objects over JRMP.
The CORBA protocol passed CDR datatypes over IIOP.
The COM protocol passes NDR datatypes over DCE RPC.

Web services pass XML data over Web protocols (HTTP, SNMP, etc).

Java objects, CDR datatypes, and NDR datatypes are very efficient binary
data representations, but they can only be interpreted by like systems. XML
is a pretty verbous data representation, but it can be interpreted by any
application. JRMP, IIOP, and DCE RPC communicate through dynamically
allocated ports, and they usually get stopped by firewalls. HTTP, SNMP,
etc., can usually slip right through firewalls.

Regards,
Anne Thomas Manes
Sun Microsystems


-----Original Message-----
From: P Sreenivasa Rao [mailto:psrao@cmcltd.com]
Sent: Friday, May 25, 2001 6:38 AM
To: soap-dev@xml.apache.org
Cc: soap-user@xml.apache.org
Subject: difference between RMI call and Webservice


Hi all,
can anybody explain the difference between RMI call and Webservice like plus
points and minus points etc.I konw that RMI is for only Java calls.But Can
we compare CORBA or RMI with Webservice.I'm new bee to this webservices.
Thanks in advance.


Regards,
Sreenivas,CMCLtd,India


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