bookdbobserver.java

此文档针对开发人员和测试人员。第二章对软件进行了全面的描述。第三章对接口进行了分析。第四章对软件实现的功能进行概述。第五章对软件后续开发实现提出的要求。第六章提出其他一些在软件开发过程中需要注意的问题

package com.ciash.bms.observer.impl;

import java.util.Collection;
import java.util.Iterator;
import java.util.Vector;

import javax.swing.JOptionPane;

import com.ciash.bms.db.manager.genus.impl.GenusDBManager;
import com.ciash.bms.entity.Book;
import com.ciash.bms.entity.User;
import com.ciash.bms.gui.uiInter.BookEditDialogUI;
import com.ciash.bms.gui.uiInter.SearchUI;
import com.ciash.bms.gui.updater.BookUpdater;
import com.ciash.bms.gui.updater.UserUpdater;
import com.ciash.bms.model.impl.BookModel;
import com.ciash.bms.model.impl.GenusModel;
import com.ciash.bms.observer.BookEditObserver;

/**
 * 书籍管理观察者实例，实现了BookSearchDBObserver
 * 
 * @see BookSearchDBObserver
 */

public class BookDBObserver extends BookSearchDBObserver implements
		BookEditObserver {

	private GenusModel genusModel;
	private BookEditDialogUI bookEditDialogUI;
	private BookModel bookModel;
	private Vector updaters = new Vector();

	public BookDBObserver(BookModel bookModel,
			BookEditDialogUI bookEditDialogUI, SearchUI searchUI,
			GenusModel genusModel) {
		super(bookModel, searchUI);
		this.bookEditDialogUI = bookEditDialogUI;
		this.genusModel = genusModel;
		this.bookModel = bookModel;
	}

	public BookDBObserver() {
	}

	public void addBook() {
		try {
			Collection c = genusModel.findAll();
			Book b;
			int result = 0;
			do {
				result = bookEditDialogUI.showDialog(c);
				b = bookEditDialogUI.getBook();
			} while (result == BookEditDialogUI.OK_OPTION
					&& !bookModel.addBook(b));
			if (result == BookEditDialogUI.OK_OPTION) {
				update();
				updateEditBook(b);
			}
		} catch (IllegalArgumentException e) {
			JOptionPane.showMessageDialog(null, "还没有添加图书类别！请先添加图书分类！", "错误",
					JOptionPane.ERROR_MESSAGE);
		}
	}

	public void update() {
		JOptionPane.showMessageDialog(null, "添加成功", "提示！",
				JOptionPane.WARNING_MESSAGE);
	}

	public void addBookEditUpdater() {
	}

	public void editBook(Book book) {
		bookEditDialogUI.showDialog(book, genusModel.findAll());
		if (bookEditDialogUI.getOption() == BookEditDialogUI.OK_OPTION) {
			int result = JOptionPane.showConfirmDialog(null, "确认保存么？", "提示",
					JOptionPane.WARNING_MESSAGE);
			if (result == JOptionPane.OK_OPTION) {
				Book b = bookEditDialogUI.getBook();
				bookModel.update(b);
				updateEditBook(b);
			}
		}
	}

	public GenusModel getGenusModel() {
		return genusModel;
	}

	public void setGenusModel(GenusModel genusModel) {
		this.genusModel = genusModel;
	}

	public BookEditDialogUI getBookEditDialogUI() {
		return bookEditDialogUI;
	}

	public void setBookEditDialogUI(BookEditDialogUI bookEditDialogUI) {
		this.bookEditDialogUI = bookEditDialogUI;
	}

	public BookModel getBookModel() {
		return bookModel;
	}

	public void setBookModel(BookModel bookModel) {
		this.bookModel = bookModel;
	}

	private Vector bookUpdaters = new Vector();

	public void addBookUpdater(BookUpdater bookUpdater) {
		bookUpdaters.add(bookUpdater);
	}

	private void updateEditBook(Book book) {
		Iterator it = bookUpdaters.iterator();
		while (it.hasNext()) {
			BookUpdater update = (BookUpdater) it.next();
			update.updateEditBook(book);
		}
	}

	private void updateDeleteUser(Book book) {
		Iterator it = bookUpdaters.iterator();
		while (it.hasNext()) {
			BookUpdater update = (BookUpdater) it.next();
			update.updateDeleteBook(book);
		}
	}

	public boolean deleteBook(Book book) {
		int result = JOptionPane.showConfirmDialog(null, "确认删除吗？", "提示！",
				JOptionPane.WARNING_MESSAGE);
		if (result == JOptionPane.OK_OPTION) {
			bookModel.delete(book);
			updateDeleteUser(book);
			return true;
		}
		return false;
	}
}