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From jba...@sasami.atomised.org (John Baker)
Subject Re: Dynamic Endpoints
Date Fri, 24 Jun 2005 08:38:44 GMT
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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