[opencms-dev] Java Action class for checking content changed/created

gsriman gsriman at gmail.com
Tue Dec 11 19:07:53 CET 2007

Hi Alessio  & Sylvain ,
  Thanks a lot for your response. As you told I wrote a action class and
registered in my module. It's listening to my action class . I am trying to
get mofified or created Resouce path and resouce name only but the function
event.getData() is giving lot of info which I don't need it.  Can you tell
me what shoould I do to get only Resource path and name.

Thanks in advance

Alessio Zurleni wrote:
> Hi,
> Once your module class set up (classe must implement I_CmsModuleAction
> as specified by Sylvain), use the CmsEvent method to check for the
> wished event.
> For a complete events list look at the 
> org.opencms.main.I_CmsEventListener class. Once the event detected you
> can grab resource(s) from event contextual data.
> For instance, when a ressource is modified a 
> I_CmsEventListener.EVENT_RESOURCE_MODIFIED event is fired and the event
> data map will contain a key named "resource" (CmsResource object).
> Regards,
> Alessio Zurleni
> Sylvain Courcelle wrote:
>> Hi,
>> Concerning Action classes, you have to respect only 3 steps :
>> 1) declaring the action class ( full package name without ".class"
>> termination ) in the module configuration
>> 2) developing your own Java class as Action Class : this action class
>> must implement I_CmsModuleAction ( an OpenCMS API interface ).
>> 3) place the brand new class in the Classes directory of your module.
>> NB: ActionClasses are always used in a Module context. If you don't have
>> one, you should create it.
>> Then, concerning events capture ...
>> The I_CmsModuleAction interface defines many methods :
>> - initialize
>> - moduleUninstall
>> - publishProject
>> And a more important one :
>> cmsEvent(CmsEvent event)
>> in this method's body, you can analyse the type of the "event" param to
>> trigger your own actions.
>> Nevertheless, I don't have a precise idea concerning the manner you could
>> detect changes on a precise Ressource of VFS. Maybe You'll have to
>> declare your own CmsEvent, and make the system listen to it ( look at
>> method AddCmsEventListener of class CmsEventManager, reachable via
>> OpenCms.getEventManager() ).
>> Hope it will help,
>> Regards,
>> Sylvain Courcelle
>> -----Message d'origine-----
>> De : opencms-dev-bounces at opencms.org
>> [mailto:opencms-dev-bounces at opencms.org] De la part de gsriman
>> Envoyé : mardi 11 décembre 2007 05:37
>> À : opencms-dev at opencms.org
>> Objet : [opencms-dev] Java Action class for checking content
>> changed/created
>> Hi All,
>>   I am new to Opencms and Java. I am trying to write a java class as
>> event
>> listener that triggers wheneever the file/content in opencms is changed
>> or
>> created and send an email to the project manager that file has been
>> changed.
>> Could anybody help me the steps needed to create java class for this and
>> necessary steps required to make this happen.
>> Thanks in advance
>> Sriman
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