hotelmanagerfacadebean.java

来自「hotel management system」· Java 代码 · 共 420 行

/*
 * Copyright 2005-2007 Kevin A. Lee
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
package net.sourceforge.hoteldj.ejb;

import java.rmi.RemoteException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.Iterator;

import javax.ejb.EJBException;
import javax.ejb.ObjectNotFoundException;
import javax.ejb.SessionContext;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;

import net.sourceforge.hoteldj.ejb.ReservationLocal;
import net.sourceforge.hoteldj.ejb.CustomerLocal;

/**
 * Stateless Session Bean to act as Facade
 * 
 * @author Kevin A. Lee
 * @email [e-mail]
 * 
 * <!-- begin-xdoclet-definition -->
 * @ejb.bean name="HotelManagerFacadeBean" type="Stateless"
 *           jndi-name="net.sourceforge.hoteldj.ejb.HotelManagerFacadeBean"
 *           local-jndi-name="java:comp/env/ejb/HotelManagerFacade"
 *           view-type="both"
 * 
 * @ejb.permission unchecked="true"
 * 
 * @ejb.interface generate="local,remote"
 *                local-class="net.sourceforge.hoteldj.ejb.HotelManagerFacadeLocal"
 *                remote-class="net.sourceforge.hoteldj.ejb.HotelManagerFacade"
 * @ejb.home generate="local,remote"
 *           local-class="net.sourceforge.hoteldj.ejb.HotelManagerFacadeLocalHome"
 *           remote-class="net.sourceforge.hoteldj.ejb.HotelManagerFacadeHome"
 * @ejb.util generate="physical"
 * 
 * @ejb.ejb-ref ejb-name="Customer" view-type="local" ref-name="ejb/Customer"
 * @ejb.ejb-ref ejb-name="Reservation" view-type="local"
 *              ref-name="ejb/Reservation"
 * 
 * @web.ejb-local-ref name="ejb/HotelManagerFacade" type="Session"
 *                    home="net.sourceforge.hoteldj.ejb.HotelManagerFacadeLocalHome"
 *                    local="net.sourceforge.hoteldj.ejb.ManagerFacadeLocal"
 *                    link="HotelManagerFacadeBean" <!-- end-xdoclet-definition
 *                    -->
 * 
 * @generated
 */

public abstract class HotelManagerFacadeBean implements javax.ejb.SessionBean {

	/**
	 * get a specific customer via their unique id
	 * 
	 * @ejb.interface-method view-type="local"
	 * @param customerId
	 * @return CustomerLocal
	 */
	public CustomerLocal getCustomer(Integer customerId) {
		Context context = null;
		CustomerLocal customer = null;

		try {
			context = new InitialContext();
			CustomerLocalHome customerHome = (CustomerLocalHome) context
					.lookup(CustomerLocalHome.JNDI_NAME);
			customer = customerHome.findByPrimaryKey(customerId);
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				context.close();
			} catch (NamingException e) {
				e.printStackTrace();
			}
		}
		return customer;
	}

	/**
	 * get a customer by their name
	 * 
	 * @ejb.interface-method view-type="local"
	 * @param customerId
	 * @return CustomerLocal
	 */
	public CustomerLocal getCustomerByName(String firstName, String lastName) {
		Context context = null;
		CustomerLocal customer = null;

		try {
			context = new InitialContext();
			CustomerLocalHome customerHome = (CustomerLocalHome) context
					.lookup(CustomerLocalHome.JNDI_NAME);
			customer = customerHome.findByName(lastName);
		} catch (ObjectNotFoundException ex) {
			// customer does not exist - ignore
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				context.close();
			} catch (NamingException e) {
				e.printStackTrace();
			}
		}
		return customer;
	}

	/**
	 * create a new customer
	 * 
	 * @ejb.interface-method view-type="local"
	 * @param firstName
	 * @param lastName
	 * @return CustomerLocal
	 */
	public CustomerLocal newCustomer(String firstName, String lastName) {
		Context context = null;
		CustomerLocal customer = null;

		try {
			context = new InitialContext();
			CustomerLocalHome customerHome = (CustomerLocalHome) context
					.lookup(CustomerLocalHome.JNDI_NAME);
			customer = customerHome.create(firstName, lastName);
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				context.close();
			} catch (NamingException e) {
				e.printStackTrace();
			}
		}
		return customer;
	}

	/**
	 * get a Reservation by its unique id
	 * 
	 * @ejb.interface-method view-type="local"
	 * @param resId
	 * @return ReservationLocal
	 */
	public ReservationLocal getReservation(Integer resId) {
		Context context = null;
		ReservationLocal res = null;

		try {
			context = new InitialContext();
			ReservationLocalHome resHome = (ReservationLocalHome) context
					.lookup(ReservationLocalHome.JNDI_NAME);
			res = resHome.findByPrimaryKey(resId);
		} catch (ObjectNotFoundException e) {
			return null;
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				context.close();
			} catch (NamingException e) {
				e.printStackTrace();
			}
		}
		return res;
	}

	/**
	 * get all of the Reservations for a Customer
	 * 
	 * @ejb.interface-method view-type="local"
	 * @param customerId
	 * @return
	 */
	public Collection getReservationsInformation(Integer customerId) {
		Context context = null;
		ArrayList resBeanList = new ArrayList();

		try {
			context = new InitialContext();
			CustomerLocalHome customerHome = (CustomerLocalHome) context
					.lookup(CustomerLocalHome.JNDI_NAME);
			CustomerLocal customer = customerHome.findByPrimaryKey(customerId);
			Iterator resIterator = customer.getReservations().iterator();

			while (resIterator.hasNext()) {
				ReservationData reservation = new ReservationData();

				ReservationLocal resLocal = (ReservationLocal) resIterator
						.next();
				reservation.setArrival_date(resLocal.getArrival_date());
				reservation.setNum_guests(resLocal.getNum_guests());
				reservation.setNum_nights(resLocal.getNum_nights());

				resBeanList.add(reservation);
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				context.close();
			} catch (NamingException e) {
				e.printStackTrace();
			}
		}

		return resBeanList;
	}

	/**
	 * create a new Reservation
	 * 
	 * @ejb.interface-method view-type="local"
	 * @param arrivalDate
	 * @return ReservationLocal
	 */
	public ReservationLocal newReservation(Integer numGuests, Date arrivalDate,
			Integer numNights, Integer custID) {
		Context context = null;
		ReservationLocal reservation = null;

		try {
			context = new InitialContext();
			ReservationLocalHome reservationHome = (ReservationLocalHome) context
					.lookup(ReservationLocalHome.JNDI_NAME);
			reservation = reservationHome.create(numGuests, arrivalDate,
					numNights);
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				context.close();
			} catch (NamingException e) {
				e.printStackTrace();
			}
		}
		reservation.setCust_id_fk(custID);
		return reservation;
	}
	
	/**
	 * check room availability
	 * 
	 * @ejb.interface-method view-type="local"
	 * @param arrivalDate
	 * @return ReservationLocal
	 */
	public boolean checkAvailability(Integer numGuests, Date arrivalDate,
			Integer numNights) {
		Context context = null;
		//ReservationLocal reservation = null;
		boolean available = true;

		try {
			context = new InitialContext();
			//ReservationLocalHome reservationHome = (ReservationLocalHome) context
			//		.lookup(ReservationLocalHome.JNDI_NAME);
			//TODO: check room table
			// reservation = reservationHome.create(numGuests, arrivalDate,
			//		numNights);			
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				context.close();
			} catch (NamingException e) {
				e.printStackTrace();
			}
		}
		return available;
	}

	/**
	 * update a Reservation by its id
	 * 
	 * @ejb.interface-method view-type="local"
	 * @param resId
	 * @return ReservationLocal
	 */
	public ReservationLocal updateReservation(Integer resId, Date arrivalDate,
			Integer numNights, Integer numGuests) {
		Context context = null;
		ReservationLocal res = null;

		try {
			context = new InitialContext();
			ReservationLocalHome resHome = (ReservationLocalHome) context
					.lookup(ReservationLocalHome.JNDI_NAME);
			res = resHome.findByPrimaryKey(resId);
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				context.close();
			} catch (NamingException e) {
				e.printStackTrace();
			}
		}
		res.setArrival_date(new java.sql.Date(arrivalDate.getTime()));
		res.setNum_nights(numNights);
		res.setNum_guests(numGuests);
		return res;
	}
	
	/**
	 * delete a Reservation by its id
	 * 
	 * @ejb.interface-method view-type="local"
	 * @param resId
	 * @return ReservationLocal
	 */
	public boolean deleteReservation(Integer resId) {
		Context context = null;
		ReservationLocal res = null;

		try {
			context = new InitialContext();
			ReservationLocalHome resHome = (ReservationLocalHome) context
					.lookup(ReservationLocalHome.JNDI_NAME);
			res = resHome.findByPrimaryKey(resId);
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				context.close();
			} catch (NamingException e) {
				e.printStackTrace();
			}
		}
		try {
			res.remove();
		} catch (Exception ex) {
			return false;
		}
		
		return true;
	}

	/**
	 * 
	 * <!-- begin-xdoclet-definition -->
	 * 
	 * @ejb.create-method view-type="remote" <!-- end-xdoclet-definition -->
	 * @generated
	 * 
	 * //TODO: Must provide implementation for bean create stub
	 */
	public void ejbCreate() {
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see javax.ejb.SessionBean#ejbActivate()
	 */
	public void ejbActivate() throws EJBException, RemoteException {
		// TODO Auto-generated method stub

	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see javax.ejb.SessionBean#ejbPassivate()
	 */
	public void ejbPassivate() throws EJBException, RemoteException {
		// TODO Auto-generated method stub

	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see javax.ejb.SessionBean#ejbRemove()
	 */
	public void ejbRemove() throws EJBException, RemoteException {
		// TODO Auto-generated method stub

	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see javax.ejb.SessionBean#setSessionContext(javax.ejb.SessionContext)
	 */
	public void setSessionContext(SessionContext arg0) throws EJBException,
			RemoteException {
		// TODO Auto-generated method stub

	}

	/*
	 * 
	 */
	public HotelManagerFacadeBean() {
		// TODO Auto-generated constructor stub
	}
}