Repository service for counting downloaded documents

Question

Hi, 
    I want to write a repository Service for counting downloaded documents.
In addRepositoryAssignment method, for which resource event type I have to register.
(i.e)
  mgr.getEventBroker().register(this, ResourceEvent.??);
or any other way to do this.
Regards
Ganesan S

Answer 1

Hi Ganesan,
Seems you have an index on the resources.
I had a look into the repository service implementation on the blog. THis is what could be the reason:
In <b>received</b> method you catch the GET resourceEvent (<b>first</b> hit). Then you get the resource in question and change/increment the property on this resource. For TREX in fact you change the resource. The event is catched by the IndexService and the TREX asks the CM for the document (<b>second</b> hit).
I would suggest to store the hitcount in an Application property (this does not change the resource and fires no ResourceEvents) as here (could be some compilation errors - I haven't tested it but it should work):
public void received(IEvent event) {
  IResourceEvent myEvent = (IResourceEvent) event;
  try {
    IResource res = myEvent.getResource();
    // get the app property service
    IRepositoryService repositoryService = repServiceFactory.getRepositoryService(res, IWcmConst.APP_PROPERTIES_SERVICE);
    IApplicationProperties aApplicationProperty = (IApplicationProperties) repositoryService;
    /// app property name
    PropertyName propertyNameHitCount = new PropertyName("http://sapportals.com/xmlns/cm","hitscount");
    //get the old value...
    IAppProperty hitcountOld = aApplicationProperty.getProperty(propertyNameHitCount, res);
    long hitcount_l = 0;
    if(hitcountOld!=null)  {
      hitcount_l = hitcountOld.getLongValue().longValue();
    hitcount_l++;
    // set the new value...
    AppProperty aAppProperty = new AppProperty(propertyNameHitCount, new Long(hitcount_l), null, true);
    aApplicationProperty.setProperty(aAppProperty, res);
  } catch (Exception e) {
    e.printStackTrace();
I hope Detlev is ok with my solution
Romano