Tapestry would have to know what's inside the method to know that it
will always return the same thing. This method doesn't return the
same thing all the time:
public String getTimestamp()
{
return String.valueOf( System.currentTimeMillis() );
}
On 2/9/07, Tobias Marx <[EMAIL PROTECTED]> wrote:
Indepenent of what the method looks like, why is it called more then once
anyhow?
If there is the same method inside a page or component, I thought Tapestry retrieves all
the data first and then "intelligently" parses all the pages and its component
templates and notices if the same method is called several times?
Now it seems like it goes through all templates line by line and then calls the methods
every time it encounteres them without "an eye" for the page scope?
If I define a class as threaded in Hivemind, doesnt Tapestry "know" that the
method will always return the same result if it appears 100 times inside a page or
component?
If there is an injected method in some components and pages that references a
threaded Hivemind class.....it is always the same call and therefore Tapestry
would only need to call it once and use the same result for all components?
Thanks!
Toby
-------- Original-Nachricht --------
Datum: Fri, 9 Feb 2007 10:24:05 -0500
Von: "James Carman" <[EMAIL PROTECTED]>
An: "Tapestry users" <users@tapestry.apache.org>
CC:
Betreff: Re: Tapestry & Hivemind: Caching multiple method calls per request?
> What does the method that fetches the domain object look like? Does
> it cache its results or does it call the IDomainSource every time?
>
> On 2/9/07, Tobias Marx <[EMAIL PROTECTED]> wrote:
> > Hi there!
> >
> > I am using Hivemind to generate a Map of Domain name related objects as
> a singleton on startup, called HibernateDomainSource.
> >
> > Then I am constructing a threaded services that uses this data
> > together with the servletRequest. This service is called DomainManager.
> >
> > I am now injecting the DomainManager into my base component in order to
> access a domain object from the HibernateDomainSource that corresponds to
> the domain name from the servlet Request.
> >
> > <service-point id="HibernateDomainSource"
> interface="tm.framework.services.interfaces.IDomainSource">
> > <invoke-factory model="singleton">
> > <construct
> class="tm.framework.services.HibernateDomainSource">
> > <set-service
> property="templatePersistenceService"
service-id="TemplatePersistenceService"/>
> > </construct>
> > </invoke-factory>
> >
> > </service-point>
> >
> > <service-point id="DomainManager"
> interface="tm.framework.services.interfaces.DomainManager">
> > <invoke-factory model="threaded">
> > <construct
> class="tm.framework.services.DomainManagerImpl">
> > <set-service property="domainSource"
> service-id="HibernateDomainSource"/>
> > <set-service property="servletRequest"
> service-id="tapestry.globals.HttpServletRequest" />
> > </construct>
> > </invoke-factory>
> > </service-point>
> >
> > The "problem" now is, that the DomainManager method that fetches the
> domain object from the map is called several times during a single page
> request.
> >
> > Is there a way to force it to only fetch it once per page request?
> >
> > Thanks!
> >
> > Toby
> >
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> >
> >
>
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