Hi,
I had asked this question earlier on how to set an event Listener for the
WebDav we found a way to do it by overriding the WebdavServlet with a custom
provider that has the eventLisner added to the session.
I am not sure if this is the right way.
I'm open for comments on this implementation or suggestions on if there is
any better way to implement it.
Thanks,
Anup
---
import java.util.Arrays;
import javax.jcr.Credentials;
import javax.jcr.LoginException;
import javax.jcr.Repository;
import javax.jcr.RepositoryException;
import javax.jcr.Session;
import javax.jcr.Workspace;
import javax.jcr.observation.ObservationManager;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.jackrabbit.server.BasicCredentialsProvider;
import org.apache.jackrabbit.server.CredentialsProvider;
import org.apache.jackrabbit.server.SessionProvider;
import org.springmodules.jcr.EventListenerDefinition;
/**
* This Class implements a default session provider uses a credentials
provider.
*/
public class CustomSessionProviderImpl implements SessionProvider {
private static final Log log =
LogFactory.getLog(CustomSessionProviderImpl.class);
private EventListenerDefinition eventListeners[] = new
EventListenerDefinition[] {};
/**
* Creates a new SessionProvider
*
*/
public CustomSessionProviderImpl() {
}
/**
* [EMAIL PROTECTED] }
*/
public Session getSession(HttpServletRequest request, Repository
repository, String workspace)
throws LoginException, RepositoryException, ServletException {
CredentialsProvider cp = new
BasicCredentialsProvider("anonymous:anonymous");
Credentials creds = cp.getCredentials(request);
Session jcrSession = null;
if (creds == null) {
jcrSession = repository.login(workspace);
} else {
jcrSession = repository.login(creds, workspace);
}
return addListeners(jcrSession);
}
/**
* [EMAIL PROTECTED] }
*/
public void releaseSession(Session session) {
session.logout();
}
/**
* @param eventListenerDefinitions The eventListenerDefinitions to set.
*/
public void setEventListeners(EventListenerDefinition[]
eventListenerDefinitions) {
this.eventListeners = eventListenerDefinitions;
}
/**
* Hook for adding listeners to the newly returned session. We have to
treat exceptions manually and can't reply on
* the template.
*
* @param session JCR session
* @return the listened session
*/
protected Session addListeners(Session session) throws
RepositoryException {
if (eventListeners != null && eventListeners.length > 0) {
Workspace ws = session.getWorkspace();
ObservationManager manager = ws.getObservationManager();
if (log.isDebugEnabled())
log.debug("adding listeners " +
Arrays.asList(eventListeners).toString() + " for session " + session);
for (int i = 0; i < eventListeners.length; i++) {
manager.addEventListener(eventListeners[i].getListener(),
eventListeners[i].getEventTypes(),
eventListeners[i].getAbsPath(),
eventListeners[i].isDeep(), eventListeners[i].getUuid(),
eventListeners[i].getNodeTypeName(),
eventListeners[i].isNoLocal());
}
}
return session;
}
}
import javax.servlet.ServletException;
import org.apache.jackrabbit.j2ee.SimpleWebdavServlet;
import org.apache.jackrabbit.server.SessionProvider;
import org.springframework.web.context.support.WebApplicationContextUtils;
public class CustomWebdavServlet extends SimpleWebdavServlet {
/**
* Init this servlet
*
* @throws ServletException
*/
public void init() throws ServletException {
super.init();
setSessionProvider((SessionProvider)
WebApplicationContextUtils.getRequiredWebApplicationContext(getServletContext()).getBean("customSessionProvider"));
}
}
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