book.java

beginJsp2.0外文书籍源代码

package com.wrox.publish.om;

import java.util.SortedSet;
import java.util.TreeSet;
import org.apache.struts.validator.ValidatorForm;

/**
 * JavaBean encapsulating a single book. This class extends ValidatorForm
 * for easy population and validation within the Struts framework.
 */
public class Book extends ValidatorForm {
    /** Status for books which are in the planning stage */
    public static final char PLANNED = 'P';
    /** Status for books which are currently in progress */
    public static final char IN_PROGRESS = 'I';
    /** Status for books which have been completed and are in production */
    public static final char COMPLETED = 'C';
    
    private long id;
    private String title;
    private String authors;
    private String editor;
    private String chapters;
    private int pageCount;
    private double price;
    private final SortedSet news = new TreeSet();
    private char status = PLANNED;
    
    /**
     * Getter for property id (the primary key).
     * @return Value of property id.
     */
    public long getId() {
        return this.id;
    }
    
    /**
     * Setter for property id (the primary key).
     * @param id New value of property id.
     */
    public void setId(long id) {
        this.id = id;
    }
    
    /**
     * Getter for the book title.
     * @return The title.
     */
    public String getTitle() {
        return this.title;
    }
    
    /**
     * Setter for the book title.
     * @param title The new title.
     */
    public void setTitle(String title) {
        this.title = title;
    }

    /**
     * Gets the book's authors.
     * @return The list of authors as a String.
     */
    public String getAuthors() {
        return this.authors;
    }
    
    /**
     * Sets the book authors.
     * @param authors The new author list.
     */
    public void setAuthors(String authors) {
        this.authors = authors;
    }
    
    /**
     * Getter for the book's editor.
     * @return The name of the editor.
     */
    public String getEditor() {
        return this.editor;
    }
    
    /**
     * Setter for the book's editor.
     * @param editor The new editor name for this book.
     */
    public void setEditor(String editor) {
        this.editor = editor;
    }
    
    /**
     * Retrieves the number of pages.
     * @return The number of pages in the book.
     */
    public int getPageCount() {
        return this.pageCount;
    }
    
    /**
     * Sets the number of pages.
     * @param pageCount The new number of pages in the book.
     */
    public void setPageCount(int pageCount) {
        this.pageCount = pageCount;
    }
    
    /**
     * Gets the list of chapters in this book.
     * @return The chapters as a String.
     */
    public String getChapters() {
        return this.chapters;
    }
    
    /**
     * Sets the chapters in the book.
     * @param chapters The new list of chapters.
     */
    public void setChapters(String chapters) {
        this.chapters = chapters;
    }
    
    /**
     * Retrieves the book's retail price.
     * @return The book's retail price.
     */
    public double getPrice() {
        return this.price;
    }
    
    /**
     * Sets the retail price.
     * @param price The book's new retail price.
     */
    public void setPrice(double price) {
        this.price = price;
    }
    
    /**
     * Getter for property status.
     * @return Value of property status.
     */
    public char getStatus() {
        return this.status;
    }
    
    /**
     * Setter for property status. New Book objects start with a status
     * <code>PLANNED</code>.
     * @param status New value of property status.
     */
    public void setStatus(char status) {
        switch (status) {
            case PLANNED:
            case IN_PROGRESS:
            case COMPLETED:
                this.status = status;
                break;
           
            default:
                throw new IllegalArgumentException(
			"Invalid status " + status);
        }
    }
    
    /**
     * Retrieves the news items for this book.
     * @return A SortedSet of BookNews objects associated with this book.
     */    
    public SortedSet getNews() {
        return this.news;
    }
    
    /**
     * Returns a String representation which is mainly useful for
     * debugging purposes.
     * @return A String representation of this Book.
     */    
    public String toString() {
        return "[" + super.toString() + ": " +
               "id=" + id + " title=" + title + " authors=" + authors + "]";
    }
}