newbiew question on WSDD and WSDL

[Developer Developer <de...@gmail.com>]

What is the different between WSDD and WSDL. My understanding is
 WSDD - is used to deploy a webservice on the webserver
WSDL- Is used to publish the web service in the UDDI.
 Is that right ?
 What is the best way to create a WSDD for a webservice defined in the java
( have access to the source code). Where can I find more information on
WSDD- a tutorial on how to create WSDD. Are there any open source tools that
help create WSDD.
 Thanks a lot in advance. !

Re: newbiew question on WSDD and WSDL

[Vishist Mandapaka <vi...@gmail.com>]

Ron,
If I may add my understanding....

UDDI is synchronous to DNS in one way. The difference between DNS and UDDI
is DNS works at network layer where as UDDI works at Application layer.
Presuming a client is unaware where a particular service is running, he
might lookup in the UDDI, fetch the wsdl (which contains precise location of
the host providing the service) and invoke the service. this setup will work
in internet. In intranet such as corporate networks, UDDI might not be of
much use as two different teams might know where the webservice is being
hosted.
thanks
vishist.
On 10/3/05, Ron Reynolds <Ro...@ronreynolds.com> wrote:
>
> WSDL is the universal standard XML for describing a (web) service
> interface ("web" is misleading
> here - WSDL works GREAT for describing ANY service interface) including
> message structure and
> types (using XSD), protocols, and locations (host urls). (note, this is
> WSDL combined with
> SOAP-Bindings - WSDL itself is much more abstract - basically just
> describe the operations an
> interface will support - the soap-binding tags are required to map
> theinterface to some
> soap-specific aspects just as XML Schema tags are needed to add type
> descriptions to the
> inteface description).
>
> WSDD is an XML used by the Axis engine to control what the Axis server
> deploys (what classes
> handle which services, what classes handle serializing the XML to/from the
> object model,
> which services are deployed on a server, and so forth). the WSDL certainly
> drives what's in
> the WSDD, but a WSDL alone doesn't tell Axis enough to know the HOW behind
> the WHAT described
> by the WSDL.
>
> and UDDI, as far as i know, is still just a good idea that doesn't get
> that much use, at least
> within intranets, but i may be mistaken on this - of all the services i've
> worked on (which is
> only a handfull) NONE of them used UDDI because you code your clients to
> your service
> interface, so the WSDL isn't really needed at runtime, and typically
> clients already know where
> the service is running (more or less).
>
> the only thing i know that generates a wsdd is the wsdl2java tool with the
> -s flag.
>
>
> > What is the different between WSDD and WSDL. My understanding is
> > WSDD - is used to deploy a webservice on the webserver
> > WSDL- Is used to publish the web service in the UDDI.
> > Is that right ?
> > What is the best way to create a WSDD for a webservice defined in the
> java
> > ( have access to the source code). Where can I find more information on
> > WSDD- a tutorial on how to create WSDD. Are there any open source tools
> that
> > help create WSDD.
> > Thanks a lot in advance. !
> >
>
>
>

Re: newbiew question on WSDD and WSDL

[Ron Reynolds <Ro...@RonReynolds.com>]

WSDL is the universal standard XML for describing a (web) service interface ("web" is misleading
here - WSDL works GREAT for describing ANY service interface) including message structure and
types (using XSD), protocols, and locations (host urls).  (note, this is WSDL combined with
SOAP-Bindings - WSDL itself is much more abstract - basically just describe the operations an
interface will support - the soap-binding tags are required to map theinterface to some
soap-specific aspects just as XML Schema tags are needed to add type descriptions to the
inteface description).

WSDD is an XML used by the Axis engine to control what the Axis server deploys (what classes
handle which services, what classes handle serializing the XML to/from the object model,
which services are deployed on a server, and so forth).  the WSDL certainly drives what's in
the WSDD, but a WSDL alone doesn't tell Axis enough to know the HOW behind the WHAT described
by the WSDL.

and UDDI, as far as i know, is still just a good idea that doesn't get that much use, at least
within intranets, but i may be mistaken on this - of all the services i've worked on (which is
only a handfull) NONE of them used UDDI because you code your clients to your service
interface, so the WSDL isn't really needed at runtime, and typically clients already know where
the service is running (more or less).

the only thing i know that generates a wsdd is the wsdl2java tool with the -s flag.


> What is the different between WSDD and WSDL. My understanding is
>  WSDD - is used to deploy a webservice on the webserver
> WSDL- Is used to publish the web service in the UDDI.
>  Is that right ?
>  What is the best way to create a WSDD for a webservice defined in the java
> ( have access to the source code). Where can I find more information on
> WSDD- a tutorial on how to create WSDD. Are there any open source tools that
> help create WSDD.
>  Thanks a lot in advance. !
>