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From jba...@sasami.atomised.org (John Baker)
Subject Re: Dynamic Endpoints
Date Sat, 25 Jun 2005 11:21:09 GMT
Nope! I want the web application running on X to set it. I've wrapped Axis
in my own web application, and hence there will be various servlets/etc. I
want Mr. User to be able to go to a servlet and set the end points for a
bunch of services, hence it can only be done dynamically... and as the same
stub may be deployed multiple times, it can't be done via a static method.

Thoughts?

On Thu, Jun 23, 2005 at 11:19:07PM -0400, Jeff wrote:
> Well, not entirely, John!
> 
> Do you want the client to set the endpoint of the target machine by calling
> an endpoint-setting method on X?
> 
> 
> Jeff
> 
> 
> ----- Original Message ----- 
> From: "John Baker" <jbaker@sasami.atomised.org>
> To: <axis-user@ws.apache.org>
> Sent: Friday, June 24, 2005 6:21 AM
> Subject: Re: Dynamic Endpoints
> 
> 
> > I think the answer to my question is:
> >
> > <soap:service location="http://blah.com" />
> >
> > So I can define this in the wsdd, but I wish to set it at runtime. I am
> > doing the following:
> >
> > - Using wsdl2java to create Java stubs, with a deploy.wsdd,
> > - Altering the deploy.wsdd to deploy the Stub,
> > - Deploying to Axis server (we'll call this X),
> > - Calling X and hoping it will then make another WS call..
> >
> > I.e..
> >
> > My client <--> X <--> Target machine.
> >
> > This is fine if I want to set the location declaration in the deploy.wsdd,
> > but what I would like to do is set it at runtime. So the web application
> on
> > X will start, walk a set of services and set a location (not statically).
> >
> > Does this clarify things?
> >
> >
> > John
> >
> >
> > On Fri, Jun 24, 2005 at 10:43:28AM +0100, John Baker wrote:
> > > Ok.
> > >
> > > Can I start by asking, given this:
> > >
> > > <deployment name="test" xmlns="http://xml.apache.org/axis/wsdd/"
> > >     xmlns:java="http://xml.apache.org/axis/wsdd/providers/java">
> > >       <service name="Example" provider="java:RPC">
> > >         <parameter name="className" value="com.blah.Example"/>
> > >         <parameter name="allowedMethods" value="login logout getDate"/>
> > >         <parameter name="wsdlServicePort" value="Example"/>
> > >      </service>
> > > </deployment>
> > >
> > > Can you tell me how to add the XML declaration to set the endpoint?
> > >
> > >
> > > John
> > >
> > >
> > > On Thu, Jun 23, 2005 at 05:02:06PM -0400, Jeff wrote:
> > > > Sorry, John, my little brain need more input! Please given a
> comprehensive
> > > > explanation of exactly how you want you software to behave.
> > > >
> > > >
> > > >
> > > > ----- Original Message ----- 
> > > > From: "John Baker" <jbaker@sasami.atomised.org>
> > > > To: <axis-user@ws.apache.org>
> > > > Sent: Friday, June 24, 2005 4:58 AM
> > > > Subject: Re: Dynamic Endpoints
> > > >
> > > >
> > > > > I am specifically talking about setting wsdd
> parameters/service-locators
> > > > > programatically. I.e I have a wsdd which defines a service, and I
> want to
> > > > > alter the service-locator through some other random part of a web
> app :)
> > > > >
> > > > > On Thu, Jun 23, 2005 at 04:43:35PM -0400, Jeff wrote:
> > > > > > It depends on how dynamic you want things to be. If you are
> talking
> > > > about
> > > > > > server-side wsdd then you could just as well declare parameters
in
> > > > web.xml
> > > > > > and retrieve values using the standard servlet API.
> > > > > >
> > > > > >
> > > > > > ----- Original Message ----- 
> > > > > > From: "John Baker" <jbaker@sasami.atomised.org>
> > > > > > To: <axis-user@ws.apache.org>
> > > > > > Sent: Friday, June 24, 2005 4:38 AM
> > > > > > Subject: Re: Dynamic Endpoints
> > > > > >
> > > > > >
> > > > > > > Well you can specify a soap:locator in the wsdd file. That's
> loaded
> > > > into
> > > > > > the
> > > > > > > internal Port instances. But how does one look them up
> > > > programatically?
> > > > > > >
> > > > > > > On Thu, Jun 23, 2005 at 04:25:25PM -0400, Jeff wrote:
> > > > > > > > Not too sure about 'stuff' either  :-)
> > > > > > > >
> > > > > > > > Each service has an endpoint which is, presumably,
better than
> a
> > > > name.
> > > > > > Where
> > > > > > > > do you anticipate getting the names/endpoints from?
> > > > > > > >
> > > > > > > >
> > > > > > > > I just re-read your original posting, John.
> > > > > > > >
> > > > > > > > Suppose there are three computers, A, B and C. Suppose
too
> that A
> > > > runs
> > > > > > the
> > > > > > > > simple client that calls into the service on B and
that the
> service
> > > > on B
> > > > > > > > uses client-side code (stub) to call into the service
on C.
> > > > > > > >
> > > > > > > > Are you expecting client A to call service B with
> setLocationURI()
> > > > to
> > > > > > set
> > > > > > > > the endpoint and then subsequently client A calls
into service
> B
> > > > which
> > > > > > > > results in service B using the pre-set endpoint to
call into
> service
> > > > C?
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > > ----- Original Message ----- 
> > > > > > > > From: "John Baker" <jbaker@sasami.atomised.org>
> > > > > > > > To: <axis-user@ws.apache.org>
> > > > > > > > Sent: Friday, June 24, 2005 4:20 AM
> > > > > > > > Subject: Re: Dynamic Endpoints
> > > > > > > >
> > > > > > > >
> > > > > > > > > Well I assume each Service has a name, so looking
it up by
> name
> > > > would
> > > > > > be
> > > > > > > > > nice. I assume that the deploy.wsdd is parsed
and 'stuff' is
> > > > created
> > > > > > > > > internally...
> > > > > > > > >
> > > > > > > > > On Thu, Jun 23, 2005 at 04:12:54PM -0400, Jeff
wrote:
> > > > > > > > > > Dunno about clean. Dunno about looking up
instances of a
> > > > service.
> > > > > > What
> > > > > > > > > > criteria are you using for choosing between
the different
> > > > service
> > > > > > > > instances?
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > > ----- Original Message ----- 
> > > > > > > > > > From: "John Baker" <jbaker@sasami.atomised.org>
> > > > > > > > > > To: <axis-user@ws.apache.org>
> > > > > > > > > > Sent: Friday, June 24, 2005 4:09 AM
> > > > > > > > > > Subject: Re: Dynamic Endpoints
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > > > Yep. I appreciate I could use a static
method, but this
> > > > doesn't
> > > > > > seem
> > > > > > > > very
> > > > > > > > > > > 'clean'... And I'm quite intrigued
to how one looks up
> > > > instances
> > > > > > of a
> > > > > > > > > > > service (or rather, the factory that
creates them)
> through
> > > > Axis..
> > > > > > > > > > >
> > > > > > > > > > >
> > > > > > > > > > > John
> > > > > > > > > > >
> > > > > > > > > > > On Thu, Jun 23, 2005 at 04:09:20PM
-0400, Jeff wrote:
> > > > > > > > > > > > Do you mean two or three different
instances of the
> same
> > > > > > service?
> > > > > > > > > > > >
> > > > > > > > > > > >
> > > > > > > > > > > > ----- Original Message ----- 
> > > > > > > > > > > > From: "John Baker" <jbaker@sasami.atomised.org>
> > > > > > > > > > > > To: <axis-user@ws.apache.org>
> > > > > > > > > > > > Sent: Friday, June 24, 2005 4:06
AM
> > > > > > > > > > > > Subject: Re: Dynamic Endpoints
> > > > > > > > > > > >
> > > > > > > > > > > >
> > > > > > > > > > > > >
> > > > > > > > > > > > > That's one way. But I may
wish to deploy the same
> class on
> > > > two
> > > > > > or
> > > > > > > > > > three
> > > > > > > > > > > > > different services and set
some parameters
> differently,
> > > > hence
> > > > > > I'm
> > > > > > > > > > > > wondering
> > > > > > > > > > > > > how to look it up by service/port
..?
> > > > > > > > > > > > >
> > > > > > > > > > > > > On Thu, Jun 23, 2005 at 04:02:59PM
-0400, Jeff
> wrote:
> > > > > > > > > > > > > > I cannot see the problem!
Just create a static
> method
> > > > for
> > > > > > your
> > > > > > > > stub
> > > > > > > > > > and
> > > > > > > > > > > > use
> > > > > > > > > > > > > > it to initialize the
endpoint.
> > > > > > > > > > > > > >
> > > > > > > > > > > > > >
> > > > > > > > > > > > > > Jeff
> > > > > > > > > > > > > >
> > > > > > > > > > > > > > ----- Original Message
----- 
> > > > > > > > > > > > > > From: "John Baker" <jbaker@sasami.atomised.org>
> > > > > > > > > > > > > > To: <axis-user@ws.apache.org>
> > > > > > > > > > > > > > Sent: Friday, June 24,
2005 3:19 AM
> > > > > > > > > > > > > > Subject: Re: Dynamic
Endpoints
> > > > > > > > > > > > > >
> > > > > > > > > > > > > >
> > > > > > > > > > > > > > > Quite, but this
isn't precisely what I meant.
> I'm
> > > > > > generating a
> > > > > > > > > > > > deploy.wsdd
> > > > > > > > > > > > > > > file and deploying
the Stub itself. So when Axis
> > > > creates
> > > > > > > > instances
> > > > > > > > > > of
> > > > > > > > > > > > the
> > > > > > > > > > > > > > > Stub, the cachedEndpoint
variable (inherited
> from
> > > > > > Stub.java)
> > > > > > > > is
> > > > > > > > > > null.
> > > > > > > > > > > > I'd
> > > > > > > > > > > > > > > like to set this
programatically from another
> part of
> > > > the
> > > > > > web
> > > > > > > > > > > > application
> > > > > > > > > > > > > > > (Axis is integrated
into my own webapp).
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > Thanks,
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > John
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > On Thu, Jun 23,
2005 at 05:32:05AM -0400, Jeff
> wrote:
> > > > > > > > > > > > > > > > For a service
called MyService, i.e. your WSDL
> file
> > > > > > contains
> > > > > > > > > > > > > > <wsdl:service
> > > > > > > > > > > > > > > > name="MyService">,
source code generated by
> > > > WSDL2Java
> > > > > > will
> > > > > > > > > > contain
> > > > > > > > > > > > > > classes
> > > > > > > > > > > > > > > > with these
(or similar) names (amongst
> others):
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > >     MyServiceLocator
> > > > > > > > > > > > > > > >     MyServiceSoap
> > > > > > > > > > > > > > > >     MyServiceSoapStub
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > You can then
invoke myMethod() against the
> service
> > > > using
> > > > > > > > code
> > > > > > > > > > like:
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > >     String
strEndpointAddress = ...
> > > > > > > > > > > > > > > >     MyServiceLocator
locator = new
> > > > MyServiceLocator();
> > > > > > > > > > > > > > > >
> > > > > > > > locator.setMyServiceSoapEndpointAddress(strEndpointAddress);
> > > > > > > > > > > > > > > >     MyServiceSoapStub
stub =
> > > > > > > > > > > > > > > >
> > > > (MyServiceSoapStub)locator.getPort(MyServiceSoap.class);
> > > > > > > > > > > > > > > >     stub.myMethod();
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > Jeff
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > ----- Original
Message ----- 
> > > > > > > > > > > > > > > > From: "John
Baker"
> <jbaker@sasami.atomised.org>
> > > > > > > > > > > > > > > > To: <axis-user@ws.apache.org>
> > > > > > > > > > > > > > > > Sent: Thursday,
June 23, 2005 7:57 AM
> > > > > > > > > > > > > > > > Subject: Dynamic
Endpoints
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > Hi,
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > I'm trying
to simplify the configuration of
> a
> > > > > > pre-packaged
> > > > > > > > > > Axis
> > > > > > > > > > > > server
> > > > > > > > > > > > > > > > which
> > > > > > > > > > > > > > > > > already
has a bunch of services deployed.
> I'd like
> > > > > > users
> > > > > > > > to be
> > > > > > > > > > > > easily
> > > > > > > > > > > > > > be
> > > > > > > > > > > > > > > > > able
to set the endpoint on services that
> were
> > > > > > generated
> > > > > > > > from
> > > > > > > > > > > > wsdl, so
> > > > > > > > > > > > > > I'm
> > > > > > > > > > > > > > > > > using
the Java stub as my deployed service.
> You
> > > > can
> > > > > > think
> > > > > > > > of
> > > > > > > > > > this
> > > > > > > > > > > > > > model as
> > > > > > > > > > > > > > > > a
> > > > > > > > > > > > > > > > > proxy,
in a rather simple sense; it does
> nothing
> > > > more
> > > > > > than
> > > > > > > > > > call
> > > > > > > > > > > > the
> > > > > > > > > > > > > > same
> > > > > > > > > > > > > > > > > service
on another server.
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > I appreciate
that it's possible to set an
> endpoint
> > > > for
> > > > > > a
> > > > > > > > > > service
> > > > > > > > > > > > > > through a
> > > > > > > > > > > > > > > > > deploy.wsdd
file. However I would like to do
> this
> > > > > > > > dynamically
> > > > > > > > > > and
> > > > > > > > > > > > am
> > > > > > > > > > > > > > > > > wondering
how I would do this? I think I
> need to
> > > > set
> > > > > > the
> > > > > > > > > > parameter
> > > > > > > > > > > > > > > > > dynamically
so everytime an instance of a
> service
> > > > is
> > > > > > > > created,
> > > > > > > > > > an
> > > > > > > > > > > > > > endpoint
> > > > > > > > > > > > > > > > is
> > > > > > > > > > > > > > > > > set.
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > I've
got something like this:
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > org.apache.axis.client.Service
service =
> > > > > > > > > > > > > > > > >
> > > > > > > > > >
> org.apache.axis.client.ServiceFactory.getService("MyService");
> > > > > > > > > > > > > > > > >   Iterator
pi = service.getPorts();
> > > > > > > > > > > > > > > > >   javax.wsdl.Port
port;
> > > > > > > > > > > > > > > > >   while
(pi.hasNext())
> > > > > > > > > > > > > > > > >   {
> > > > > > > > > > > > > > > > >     port
= (javax.wsdl.Port)pi.next();
> > > > > > > > > > > > > > > > >     port.addExtensibilityElement(new
> > > > > > > > > > > > > > > >
> SOAPAddressImpl("http://localhost:9090/hello"));
> > > > > > > > > > > > > > > > > }
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > But I
suspect it would have to be a little
> more
> > > > > > advanced
> > > > > > > > than
> > > > > > > > > > my
> > > > > > > > > > > > > > simple
> > > > > > > > > > > > > > > > > example
:)
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > I'd also
need to write my own SOAPImpl:
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > protected
class SOAPAddressImpl implements
> > > > > > > > > > > > > > > > javax.wsdl.extensions.soap.SOAPAddress
> > > > > > > > > > > > > > > > > {
> > > > > > > > > > > > > > > > >   private
QName elementType;
> > > > > > > > > > > > > > > > >   private
Boolean required;
> > > > > > > > > > > > > > > > >   private
String uri;
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > >   public
SOAPAddressImpl(String uri)
> > > > > > > > > > > > > > > > >   { this.uri
= uri; }
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > >   public
void setElementTpe(QName
> elementType)
> > > > > > > > > > > > > > > > >   { this.elementType
= elementType; }
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > >   public
QName getElementType()
> > > > > > > > > > > > > > > > >   { return
(elementType); }
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > >   public
void setRequired(Boolean required)
> > > > > > > > > > > > > > > > >   { this.required
= required; }
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > >   public
Boolean getRequired()
> > > > > > > > > > > > > > > > >   { return
(required); }
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > >   public
void setLocationURI(String uri)
> > > > > > > > > > > > > > > > >   { this.uri
= uri; }
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > >   public
String getLocationURI()
> > > > > > > > > > > > > > > > >   { return
(uri); }
> > > > > > > > > > > > > > > > > }
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > But I'm
not sure what the elementType of
> required
> > > > flag
> > > > > > > > would
> > > > > > > > > > > > require?
> > > > > > > > > > > > > > > > Having
> > > > > > > > > > > > > > > > > read
the Axis source, I don't think they are
> used
> > > > by
> > > > > > the
> > > > > > > > > > > > > > client.Service
> > > > > > > > > > > > > > > > class anyway.
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > Any thoughts/pointers?
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > Thanks,
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > John
Baker

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