usercontrollerwebimpl.java

J2EE & Tomcat books published by hope

/*
 
 */
package org.impact.stars.control.web;

import java.util.Locale;
import java.util.Collection;
import javax.rmi.PortableRemoteObject;
import javax.naming.InitialContext;
import javax.servlet.http.HttpSession;

import org.impact.stars.util.Debug;
import org.impact.stars.util.JNDINames;
import org.impact.stars.util.WebKeys;
import org.impact.stars.util.JSPUtil;
import org.impact.stars.control.event.StarsEvent;
import org.impact.stars.control.ejb.UserControllerLocal;
import org.impact.stars.control.ejb.UserControllerLocalHome;

import org.impact.stars.conceptmd.concept.model.ConceptModel;
import org.impact.stars.conceptmd.conceptstr.ejb.ConceptstrLocal;
import org.impact.stars.organizationmd.profilemgr.model.ProfileMgrModel;
import org.impact.stars.organizationmd.profilemgr.ejb.ProfileMgrLocal;
//import org.impact.stars.organizationmd.user.model.UserModel;
import org.impact.stars.organizationmd.user.ejb.UserLocal;

import org.impact.stars.control.web.ModelManager;

import java.rmi.RemoteException;
import javax.ejb.FinderException;
import javax.ejb.CreateException;
import javax.ejb.RemoveException;
import javax.naming.NamingException;


import org.impact.stars.control.exceptions.GeneralFailureException;
import org.impact.stars.control.exceptions.StarsEventException;
import org.impact.stars.control.exceptions.StarsAppException;

/**
 * This class is essentially just a proxy object that calls methods on the
 * EJB tier using the org.impact.stars.control.ejb.UserControllerEJB
 * object. All the methods that access the EJB are synchronized so
 * that concurrent requests do not happen to the stateful session bean.
 *
 * @see org.impact.stars.control.ejb.UserController
 * @see org.impact.stars.control.ejb.UserControllerEJB
 * @see org.impact.stars.control.event.StarsEvent
 */
public class UserControllerWebImpl implements java.io.Serializable {

    private org.impact.stars.control.ejb.UserControllerLocal uclEjb;
    private HttpSession session;

    public UserControllerWebImpl() {
    }

    /**
     * constructor for an HTTP client.
     * @param the HTTP session object for a client
     */
    public UserControllerWebImpl(HttpSession session) {
        this.session = session;
        ModelManager mm = (ModelManager)session.getAttribute(WebKeys.ModelManagerKey);
        uclEjb = mm.getURCEJB();
    }

/*
    public synchronized ConceptstrLocal getConceptstrEJB() {
        try {
            return uclEjb.getConceptstr();
        } catch (StarsAppException fe) {
            throw new GeneralFailureException(fe.getMessage());
        } catch (RemoteException re) {
            throw new GeneralFailureException(re.getMessage());
        }
    }
*/
    public synchronized ProfileMgrLocal getProfileMgrEJB() {
        try {
            return uclEjb.getProfileMgr();
        } catch (StarsAppException fe) {
            throw new GeneralFailureException(fe.getMessage());
    }
    }
    
    public synchronized UserLocal getUserEJB() {
        try {
            return uclEjb.getUser();
        } catch (StarsAppException fe) {
            throw new GeneralFailureException(fe.getMessage());
    }
    }

    /**
     * @return the profile corresponding to the current user.
     * @exception org.impact.stars.control.GeneralFailureException
     */
    /*
    public synchronized ProfileMgrModel getProfileMgr() {
        try {
            return uclEjb.getProfileMgr().getDetails();
        } catch (StarsAppException fe) {
            throw new GeneralFailureException(fe.getMessage());
        }
    }
    */
    public synchronized Collection handleEvent(StarsEvent ese)
        throws StarsEventException {
        try {
            Debug.println("UserControllerWebImpl: handleEvent");
            return uclEjb.handleEvent(ese);
        } catch (StarsAppException re) {
                throw new GeneralFailureException(re.getMessage());
        }
    }

     /**
     * frees up all the resources associated with this controller and
     * destroys itself.
     */
    public synchronized void remove() {
        // call ejb remove on self/shopping cart/etc.
        try {
            uclEjb.remove();
        } catch(RemoveException re){
            // ignore, after all its only a remove() call!
            Debug.print(re);
        }
    }
}