The LinkFactory service is completely reliant on the servlet container it is
running in. It's really not intended to be used outside of a specific http
request.
For your use-case friendly urls sure would make a huge difference.
On 7/19/06, Shing Hing Man <[EMAIL PROTECTED]> wrote:
You could trying setting the property webRequest in
requestGlobals manually before invoking
externalService.getLink().
// The following few lines of code set up the property
// webRequest and webResponse in requestGlobals.
//
HttpServletRequest req =(HttpServletRequest)request;
HttpServletResponse resp =
(HttpServletResponse)response;
RequestGlobals requestGlobals = (RequestGlobals)
registry.getService("tapestry.globals.RequestGlobals",RequestGlobals.class
);
WebRequest webRequest = new
ServletWebRequest(req,resp);
WebResponse webResponse = new
ServletWebResponse(resp);
requestGlobals.store(webRequest,webResponse);
Usually, the webRequest (and webResponse) in
requestGlobal is set
in WebRequestServicerPipelineBridge.java.
Here is the route to
WebRequestServicerPipelineBridge.java :
ApplicationServlet.doService ->
WebRequestServicerPipelineBridge.service.
Shing
--- Valdemaras Repšys <[EMAIL PROTECTED]> wrote:
> I managed to get the Registry by overriding the
> ApplicationServlet and i'm
> able to get the external service.
> However, it is not clear, when it is correct to
> invoke
> externalService.getLink(). If it is invoked just
> after
> ApplicationServlet.init() it fails with exception:
> org.apache.hivemind.ApplicationRuntimeException:
> Unable to construct service
> tapestry.url.LinkFactory: Error building service
> tapestry.url.LinkFactory
> Caused by:
> org.apache.hivemind.ApplicationRuntimeException:
> Unable to read
> property contextPath of object <SingletonProxy for
> tapestry.Infrastructure(
> org.apache.tapestry.services.Infrastructure)>:...
> java.lang.reflect.InvocationTargetException...
> Caused by: java.lang.NullPointerException: Property
> 'webRequest' of
> <OuterProxy for tapestry.globals.RequestGlobals(
> org.apache.tapestry.services.RequestGlobals)> is
> null.
>
> I can get the link if i invoke getLink later.. when
> some page was
> initialized.
>
> Valdemaras Repšys
>
> On 7/18/06, James Carman
> <[EMAIL PROTECTED]> wrote:
> >
> > If you can get to the HiveMind registry, you can
> lookup the
> > ExternalService
> > and use it.
> >
> > -----Original Message-----
> > From: Valdemaras Repšys [mailto:[EMAIL PROTECTED]
> > Sent: Tuesday, July 18, 2006 8:27 AM
> > To: Tapestry users
> > Subject: Re: external link to a tapestry page
> >
> > Thanks for the answer, Aleksej.
> >
> > The problem is, this URL must be generated on a
> java thread (or class)
> > that
> > is not an instance of BasePage and is not a
> tapestry page. That means i
> > have
> > no access to ExternalService, right?
> > Also, I can't use @Any component because this url
> will be sent as an email
> > to the user (as a simple text).
> >
> > Valdemaras Repšys
> >
> > On 7/18/06, Aleksej <[EMAIL PROTECTED]> wrote:
> > >
> > > Valdemaras Repšys wrote:
> > > > Hi,
> > > > i need my application to send emails with the
> link to the specific
> > > > tapestry
> > > > page. How would i generate a link?
> > > >
> > > > I tried extending a page with IExternalPage
> and using the address:
> > > >
>
http://localhost:8080/BioJazz/app?service=external/HitList
> > > > What i get is RuntimeException: No engine
> service named
> > > > 'external/HitList'
> > > > is available.
> > > >
> > > > Link (as in ExternalService API doc):
> > > >
>
http://localhost:8080/BioJazz/app?service=external&context=HitList
> > > > gives a
> > > > null pointer exception:
> > > >
> > > > -
>
org.apache.hivemind.util.Defense.notNull(Defense.java:41)
> > > > -
> > > >
>
org.apache.tapestry.engine.RequestCycle.getPage(RequestCycle.java:242)
> > > >
> > > > -
> org.apache.tapestry.engine.ExternalService.service(
> > > > ExternalService.java:144)
> > > > -
> > >
>
$IEngineService_10c8121ee8c.service($IEngineService_10c8121ee8c.java)
> > > >
> > > >
> > > > Any hint?
> > > > Thanks,
> > > > Valdemaras Repšys
> > > >
> > > Do not form links manually, use
> "tapestry.services.External" service (
> > > in your case ).
> > > First inject it into your page with something
> like:
> > > <inject property="externalService"
> > > object="service:tapestry.services.External" />
> in your page file.
> > > Be sure that you have a externalService property
> getter like:
> > > public abstract IEngineService
> getExternalService();
> > > Then, when you need to generate link, just use
> > >
>
"org.apache.tapestry.engine.ExternalServiceParameter"
> > > to generate your page parameters ( name and
> Object[] ) and call
> > > getExternalService().getLink( your parameter
> object ).
> > > This will return ILink object and you will be
> able to call
> > > getAbsoluteURL on it, which will return required
> Link as a string.
> > > On the page you can probably put it using @Any
> component, like:
> > > <a jwcid="@Any" href="yourLink">go go go</a>
> > > -------------
> > > GL
> > >
> > >
> > >
> > >
> > >
>
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> > >
> >
> >
> >
> >
>
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