bookejbimpl.java

来自「主要是对串口驱动的的一些控制源码！！！ 在下载javacomm20-win32」· Java 代码 · 共 104 行

package de.fhm.jkf.bookshop.sv;
/*
 * <br><br><center><table border="1" width="80%"><hr> <strong><a href="http:
 * //jkf.sourceforge.net">The JKF Project</a></strong>
 * <p>
 * Copyright (C) 2002 by Theodor Willax
 * <p>
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * <p>
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * <p>
 * You should have received a copy of the <a href="http://www.gnu.org/copyleft/lesser.html">
 * GNU Lesser General Public License</a> along with this library; if not, write to
 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA  02111-1307  USA
 * <hr></table></center>
 */
import javax.ejb.CreateException;
import javax.ejb.EntityBean;
import javax.ejb.EntityContext;

import de.fhm.jkf.bookshop.clsv.BookTO;
import de.fhm.jkf.bookshop.clsv.IsbnValidator;
import de.fhm.jkf.bookshop.clsv.IsbnValidatorResult;
/**
 * Implementation of a book entity.
 * 
 * @author Theodor Willax
 * @version $Revision: 1.5 $
 */
public abstract class BookEJBImpl implements EntityBean {
	/** This beans entity context. */
	private transient EntityContext entityContext;
	// Business-Methods Remote-Interface
	public abstract String getIsbn();
	public abstract Double getPrice();
	public abstract String getTitle();
	public abstract String getAuthor();
	public abstract void setIsbn(String newISBN);
	public abstract void setPrice(Double newPrice);
	public abstract void setTitle(String newTitle);
	public abstract void setAuthor(String newAuthor);

	/**
	 * Returns the transfer object to this instance.
	 * 
	 * @return BookTO
	 */
	public BookTO getBookTO() {
		return new BookTO(getIsbn(), getTitle(), getAuthor(), getPrice());
	}

	// Business-Methoden Home-Interface
	public void ejbPostCreate(
		String isbn,
		String title,
		String author,
		Double price) {
	}

	public String ejbCreate(
		String isbn,
		String title,
		String author,
		Double price)
		throws CreateException {
		if (isbn == null)
			throw new CreateException("The isbn is required.");

		IsbnValidatorResult result = new IsbnValidator().isIsbn(isbn);
		if (result != IsbnValidatorResult.VALIDATION_SUCCESS)
			throw new CreateException(isbn + " " + result.toString());

		setIsbn(isbn);
		setTitle(title);
		setAuthor(author);
		setPrice(price);
		return null; // because of CMP
	}

	public void setEntityContext(EntityContext ctx) {
		entityContext = ctx;
	}
	public void unsetEntityContext() {
		entityContext = null;
	}
	public void ejbActivate() {
	}
	public void ejbPassivate() {
	}
	public void ejbLoad() {
	}
	public void ejbStore() {
	}
	public void ejbRemove() {
	}
}