usercontrollerbean.java

来自「《Java网络程序设计.rar》包括三个网络程序的源代码。」· Java 代码 · 共 125 行

/*
*/

package org.impact.stars.control.ejb;

import java.util.Collection;
import java.util.HashMap;
//import java.rmi.RemoteException;
import javax.ejb.CreateException;
import javax.ejb.EJBException;
import javax.ejb.RemoveException;
import javax.ejb.SessionBean;
import javax.ejb.SessionContext;
import javax.ejb.FinderException;

import org.impact.stars.control.event.StarsEvent;
import org.impact.stars.control.event.ConceptEvent;
import org.impact.stars.util.Debug;
import org.impact.stars.util.EJBUtil;
import org.impact.stars.util.EJBKeys;

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

import org.impact.stars.organizationmd.stakeholder.ejb.StakeholderLocal;
import org.impact.stars.organizationmd.stakeholder.ejb.StakeholderLocalHome;

import org.impact.stars.organizationmd.profilemgr.ejb.ProfileMgrLocal;
import org.impact.stars.organizationmd.profilemgr.ejb.ProfileMgrLocalHome;

import org.impact.stars.organizationmd.user.ejb.UserLocal;
import org.impact.stars.organizationmd.user.ejb.UserLocalHome;

/**
 * Session Bean implementation for UserController EJB.
 */
public class UserControllerBean implements SessionBean {

    private StateMachine sm;
    private SessionContext sc;
    private StakeholderLocal shdr;
    private ProfileMgrLocal pro;
    private UserLocal user;

    public UserControllerBean() {}

    /** @return the Stakeholder entity bean for this user. */

    public StakeholderLocal getStakeholder() throws StarsAppException {
        String userId = (String)sm.getAttribute(EJBKeys.USERNAME);
        Debug.println("UserController: getStakeholder userId=" + userId);
        if (shdr == null) {
            try {
                StakeholderLocalHome home = EJBUtil.getStakeholderLocalHome();
                shdr = home.findByPrimaryKey(userId);
            } catch (FinderException ce) {
                throw new StarsAppException("Unable to find a Stakeholder instance while getting the details of user " + userId);
            } catch (javax.naming.NamingException ne) {
                throw new EJBException (ne);
            }
        }
        return shdr;
    }

    /** @return the profilemgr entity bean for this user. */
    public ProfileMgrLocal getProfileMgr() throws StarsAppException {

        String userId = (String)sm.getAttribute(EJBKeys.USERNAME);
        if (pro == null) {
            try {
                Debug.println("UserController: userId: " + userId);
                ProfileMgrLocalHome home = EJBUtil.getProfileMgrLocalHome();
                pro = home.findByPrimaryKey(userId);
            } catch (FinderException fe) {
                throw new StarsAppException("Unable to find the profile of user " + userId);
            } catch (javax.naming.NamingException ne) {
                throw new EJBException (ne);
            }
        }
        return pro;
    }

     public UserLocal getUser() throws StarsAppException {
        String userId = (String)sm.getAttribute(EJBKeys.USERNAME);
        Debug.println("UserControler: getUser userId=" + userId);
        if (user == null) {
            try {
                UserLocalHome home = EJBUtil.getUserLocalHome();
                user = home.create();
            } catch (CreateException ce) {
                throw new StarsAppException("Unable to create a User instance while getting the details of user " + userId);
            } catch (javax.naming.NamingException ne) {
                throw new EJBException (ne);
            }
        }
        return user;
    }
    
    public void ejbCreate() {
        sm = new StateMachine(this, sc);
    }



/** returns a Collection of updated Models */

    public Collection handleEvent(StarsEvent ese)
        throws StarsEventException {
          return (sm.handleEvent(ese));
    }

    public void setSessionContext(SessionContext sc) {
        this.sc = sc;
    }

    public void ejbRemove() {
        
        shdr = null;
        pro = null;
    }

    public void ejbActivate() {}

    public void ejbPassivate() {}
}