Re: Trying to use StateObjectFactory...

Mon, 05 Mar 2007 07:10:18 -0800 

Hi Alexander,
There are loads of docs! The thing to know is that the <construct> part is a general feature of HiveMind1, so look at the docs at http://hivemind.apache.org/, however within a Tapestry project you naturally want to access Tapestry related services, so look at http://tapestry.apache.org/ for info there. 


For your specific question of obtaining the HttpServletRequest, you need 
to locate where that is offered. The route I followed is:


tapestry.apache.org

Select the tapestry4 version from left hand menu.

Select Framework from left hand menu.

Select Reports from the dropped down menu.

Select HiveDoc.


Search for HttpServletRequest to get the answer that 
tapestry.globals.HttpServletRequest is a service.



Therefore to add this service to your SecurityBeanFactory, just add the 
line:



<set-service property="httpServletRequest" 
service-id="service:HttpServletRequest" />


inside your <construct>

and provide a:


public void setHttpServletRequest(javax.servlet.http.HttpServletRequest 
request) {

   this.request = request;
}

method in your SecurityBeanFactory class.


Note from the HiveDoc description that the 
tapestry.globals.HttpServletRequest is a threaded service, which means 
that it magically returns the actual HttpServletRequest object for that 
particular web request (cheers to Howard for such a brilliant 
implementation!).


Cheers

Richard

Kolesnikov, Alexander GNI wrote:

Thank you, Richard,

Are there any docs on what I can do in <construct>? Say, I want to
obtain HttpRequest?

Alexander

-----Original Message-----

From: Richard Kirby [mailto:[EMAIL PROTECTED] 
Sent: 05 March 2007 14:44

To: Tapestry users
Subject: Re: Trying to use StateObjectFactory...


Hi Alexander,

You need to define a service that you then reference in the
invoke-factory:


<service-point id="SecurityBeanFactory" 
interface="org.apache.tapestry.engine.state.StateObjectFactory">

  <invoke-factory>
    <construct class="com.test.util.SecurityBeanFactory">
      <!-- Any config you need here... -->
    </construct>
  </invoke-factory>
</service-point>

<contribution configuration-id="tapestry.state.ApplicationObjects">
  <state-object name="security" scope="session".
    <invoke-factory object="service:SecurityBeanFactory" />
  </state-object>
</contribution>

Cheers

Richard

Kolesnikov, Alexander GNI wrote:

  

Hello everyone,

I am using Tapestry 4.0.2.


I want to use an ASO with some security information in it. The 
information should be obtained from HttpRequest on the ASO's creation.
    



  

I decided to use a StateObjectFactory to create such an ASO and 
configured it like this:


<contribution configuration-id="tapestry.state.ApplicationObjects">
        <state-object name="security" scope="session">
                <invoke-factory

    

object="com.test.util.SecurityBeanFactory"/>

  

        </state-object>
</contribution>

Then I am trying to obtain the ASO in the page's code like this:

@InjectState("security")
public abstract SecurityBean getSecurity();


The code for the factory was more sensible, but to find a problem I 
left just this:


public class SecureBeanFactory implements StateObjectFactory {

        public Object createStateObject() {

		SecurityBean sb = new SecurityBean(new TestUser(), new 
TestApplication());

                return sb;
        }
}

However, I am getting an exception:

org.apache.hivemind.ApplicationRuntimeException

Unable to construct configuration tapestry.state.ApplicationObjects:
Error: Object provider selector 'com.test.util.SecurityBeanFactory' is

    



  

not properly formatted.

What can be wrong here?

Thanks,

Alexander

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