netstoreejbdelegate.java

一个netstore的完整代码,他使用了j2ee和webservice技术,并使用ojb o/r管理框架,很不错的

package netstore.service.ejb;

import java.rmi.RemoteException;
import java.util.Hashtable;
import java.util.List;
import javax.ejb.CreateException;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.rmi.PortableRemoteObject;
import javax.servlet.ServletContext;
import netstore.catalog.view.ItemDetailView;
import netstore.customer.view.UserView;
import netstore.framework.exceptions.*;
import netstore.service.INetstoreService;
/**
 * This class is a business delegate that supports the implementation of the
 * INetstoreService interface using the Netstore session bean.
 */
public class NetstoreEJBDelegate implements INetstoreService {

  private INetstore netstore;
  ServletContext servletContext = null;
  public NetstoreEJBDelegate(  ) {
    init(  );
  }

  private void init(  ) {
    try {
       InitialContext ic = new InitialContext();
       Object objRef = ic.lookup("java:comp/env/ejb/NetstoreEJB");
       NetstoreEJBHome home = (NetstoreEJBHome)PortableRemoteObject.narrow(objRef,
          	netstore.service.ejb.NetstoreEJBHome.class);
       netstore = home.create();

    }
    catch (NamingException e) {
      throw new RuntimeException(e.getMessage(  ));
    }
    catch (CreateException e) {
      throw new RuntimeException(e.getMessage(  ));
    }
    catch (RemoteException e) {
      throw new RuntimeException(e.getMessage(  ));
    }
  }

  public UserView authenticate( String email, String password )
   throws InvalidLoginException, ExpiredPasswordException,
     AccountLockedException, DatastoreException {
    try {
      return netstore.authenticate(email, password);
    }
    catch (RemoteException e) {
      throw DatastoreException.datastoreError(e);
    }
  }

  public List getFeaturedItems(  ) throws DatastoreException {
    try {
      return netstore.getFeaturedItems(  );
    }
    catch (RemoteException e) {
      throw DatastoreException.datastoreError(e);
    }
  }

  public ItemDetailView getItemDetailView( String itemId )
   throws DatastoreException {
    try {
      return netstore.getItemDetailView(itemId);
    }
    catch (RemoteException e) {
      throw DatastoreException.datastoreError(e);
    }
  }

  public void logout( String email ) {
    // Do nothing for this example
  }

  public void destroy(  ) {
    // Do nothing for this example
  }
   public void setServletContext( ServletContext ctx ){
    this.servletContext = ctx;
  }

  public ServletContext getServletContext(){
    return servletContext;
  }

}