The config browser plugin shows all the actions mapped by struts, you
might want to look at the code for tips.
musachy
On Thu, Feb 26, 2009 at 12:27 PM, Karan Malhi <karan.ma...@gmail.com> wrote:
> Thanks Rene. I am trying to avoid a situation where I would have to scan the
> whole classpath on web app startup. Does struts cache the information about
> all action classes somewhere? I am thinking maybe I could simply use that
> information , instead of trying to figure out the action classes on my own?
>
> On Tue, Feb 24, 2009 at 4:46 PM, Rene Gielen <gie...@it-neering.net> wrote:
>
>> If your intent is to go for a ObjectFactory implementation / extension, I
>> think it would not be necessary to distinct between action or non-action
>> classes - just check the bean to build for the EJB annotations, regardless
>> what kind of bean that is. Actually, in Struts2 not only action classes are
>> candidates for an injection like this - interceptors would also be good
>> candidates, maybe even results.
>>
>> I would really like to see "first class" EJB3 support in S2, and would also
>> be glad to help where I can
>>
>> - Rene
>>
>> Karan Malhi schrieb:
>>
>> If a class has a suffix of Action or implements the Action interface, would
>>> that automatically be treated as an action class? Would such a class
>>> require that it be listed in the struts.xml file?
>>>
>>>
>>> On Sat, Feb 21, 2009 at 11:29 PM, Karan Malhi <karan.ma...@gmail.com>
>>> wrote:
>>>
>>> Thanks Wes,
>>>>
>>>> Appreciate such a prompt response.
>>>>
>>>> There are likely to be actions mapped via other means. There are many
>>>>> plugins
>>>>> available, most prominently the REST plugin and the Convention plugin
>>>>> that
>>>>> allow our users to map actions without any XML
>>>>>
>>>>
>>>> So a user would need these plugins to map actions without XML. Struts
>>>> default behavior would require a user to map the action in the XML file
>>>> and
>>>> that would be struts.xml, right? So would it be fair to say that if I
>>>> parse
>>>> the struts.xml file and all included xml files, then I will have a list
>>>> of
>>>> all available actions in the webapp (assuming user is not using the
>>>> plugins
>>>> you mentioned) ?
>>>>
>>>>
>>>>> 3. I was planning to write a plugin, but wanted to have access to the
>>>>>> ServletContext within the plugin. Could you show me how to do that -- I
>>>>>> tried implementing ServletContextAware in the plugin class, but that
>>>>>> did
>>>>>> not work for me (maybe that interface is only supposed to be
>>>>>> implemented
>>>>>>
>>>>> by
>>>>>
>>>>>> actions)
>>>>>>
>>>>> That interface is meant for actions. The best way to get a
>>>>> ServletContext
>>>>> is
>>>>> to do the following from an interceptor -
>>>>>
>>>>> final ActionContext context = invocation.getInvocationContext();
>>>>> ServletContext servletContext = (ServletContext)
>>>>>
>>>>> context.get(org.apache.struts2.StrutsStaticsSERVLET_CONTEXT);
>>>>>
>>>>> Although I did not manage to get access to the actual ServletContext, I
>>>> believe ActionContext.getContext().getApplication() would give me access
>>>> to
>>>> the Map of context attributes. Since I just need to read an attribute
>>>> from
>>>> it, I believe this approach should suffice.
>>>>
>>>> You may face a few issues though. I've thought briefly about EJB +
>>>>> Struts2
>>>>> lately and I'll admit to a lack of experience with EJB, but it seems to
>>>>> me
>>>>> that it would be somewhat difficult to combine the two easily. Many of
>>>>> the
>>>>> EJB
>>>>> annotations can appear on private members (i.e. @PersistenceContext). In
>>>>> Struts2, we create actions via our own ObjectFactory, which can be
>>>>> overridden
>>>>> by a plugin.
>>>>>
>>>>> On application startup we collect information about all classes which
>>>> need
>>>> injection. Then when instances of classes are created, we use that
>>>> information to perform injection. The plugin which I wanted to write
>>>> would
>>>> be an ObjectFactory and I intended to override the buildBean method and
>>>> perform the injection there. Actually, I just realized that I could get
>>>> access to the Map of ServletContext attributes as shown below:
>>>> public class OpenEJBObjectFactory extends ObjectFactory{
>>>> public Object buildBean(Class clazz, Map map) throws Exception {
>>>> Map application = (Map)map.get("application");
>>>> // THIS IS WHERE I COULD READ THE ATTRIBUTE AND
>>>> // CREATE THE ACTION INSTANCE AND PERFORM INJECTION
>>>> }
>>>> }
>>>>
>>>>
>>>> I'm not particularly familiar with OpenEJB, but I'd like to help however
>>>>> I
>>>>> can. So, let me know if you need the help.
>>>>>
>>>>> Excellent. I really appreciate it. You are already helping in a great
>>>> way
>>>> by answering my questions. Thank you so much.
>>>>
>>>> -Wes
>>>>> --
>>>>>
>>>>> Wes Wannemacher
>>>>> Author - Struts 2 In Practice
>>>>> Includes coverage of Struts 2.1, Spring, JPA, JQuery, Sitemesh and more
>>>>> http://www.manning.com/wannemacher
>>>>>
>>>>>
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>>>>>
>>>>>
>>>>>
>>>> --
>>>> Karan Singh Malhi
>>>>
>>>>
>>>
>>>
>>>
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>>
>>
>
>
> --
> Karan Singh Malhi
>
--
"Hey you! Would you help me to carry the stone?" Pink Floyd
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