Definitions and Examples of the Open Hypermedia Protocol (OHP)
The following definitions and examples concern OHP-Nav, the navigational interface for OHP.
... in XML
The Open Hypermedia Protocol Navigational Interface as
an XML confomant Document Type Definition and a
simple example of a CreateEndpointMessage
represented in XML.
A proposal for a new simplified yet more powerful version
of OHP-Nav as
an XML confomant Document Type Definition and a
examples of messages
represented in XML.
The current
DTD (version 1.3) which is used for the demo at HT99
in Darmstadt: "Tool-using,
Co-operating Nav Monkeys". And a set
of example messages conforming to the DTD.
... as IDL with sample implementations in Java
A very simple Interface Definition Language specification
OHPNav.idl.
An implementation of the createEndpoint message in OHPNavigationalImpl.java.
A simple server OHPNavServer.java.
A simple client OHPNavClient.java.
How2Do a simple
implementation using VisiBroker under Windows95. Note:
The CORBA examples have been compiled and tested with the
VisiBroker ORB from Visigenic.
... implemented using Java's RMI
Note that the IDL has been slightly modified recently
so that you would have to follow the steps as described
in the How2Do
file in order to generate new versions of the following
files.
The definition of the OHPNavigational
interface.
The package ohp.
A simple implementation of the OHPNavigational interface
named OHPNav10.java.
A simple server OHPNavServer.java.
A simple client OHPNavClient.java.
How2Do a simple
implementation using JDK 1.1 (actually JDK 1.1.6 has been
used).
... in SGML
The Open Hypermedia Protocol Navigational Interface as an SGML Document Type
Definition.
A sample instance - OHPNav1.sgm
showing a CreateEndpoint message.
Note that from May 1998 onwards XML is used for
defining OHP-Nav messages being sent as ByteStreams via
Sockets. The SGML definition is therefore not up to date.
Copyright © 2005 by
IFS
last modified:
Friday, 17-Dec-1999 09:31:06 MET
created by: SRE
http://www.ifs.uni-linz.ac.at/ifs/staff/reich/ohs/docs/defs.html
