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LibraryJDOMCreator.javaAPI DocExample3231Sun Sep 02 14:59:00 BST 2001chap1

LibraryJDOMCreator

public class LibraryJDOMCreator extends Object
An example from Chapter 1. Creates the library XML file using JDOM.

Fields Summary
Constructors Summary
Methods Summary
private org.jdom.ElementcreateBookElement(Book book)

        Element bookElem = new Element("book");

        // add publisher="oreilly" and isbn="1234567" attributes
        // to the <book> element
        bookElem.addAttribute("publisher", book.getPublisher().getId())
                .addAttribute("isbn", book.getISBN());

        // now add an <edition> element to <book>
        bookElem.addContent(new Element("edition").setText(
                Integer.toString(book.getEdition())));

        Element pubDate = new Element("publicationDate");
        pubDate.addAttribute("mm",
                Integer.toString(book.getPublicationMonth()));
        pubDate.addAttribute("yy",
                Integer.toString(book.getPublicationYear()));
        bookElem.addContent(pubDate);

        bookElem.addContent(new Element("title").setText(book.getTitle()));
        bookElem.addContent(new Element("author").setText(book.getAuthor()));

        return bookElem;
public org.jdom.DocumentcreateDocument(Library library)

        Element root = new Element("library");
        // JDOM supports the <!DOCTYPE...>
        DocType dt = new DocType("library", "library.dtd");
        Document doc = new Document(root, dt);

        // add <publisher> children to the <library> element
        Iterator publisherIter = library.getPublishers().iterator();
        while (publisherIter.hasNext()) {
            Publisher pub = (Publisher) publisherIter.next();
            Element pubElem = createPublisherElement(pub);
            root.addContent(pubElem);
        }

        // now add <book> children to the <library> element
        Iterator bookIter = library.getBooks().iterator();
        while (bookIter.hasNext()) {
            Book book = (Book) bookIter.next();
            Element bookElem = createBookElement(book);
            root.addContent(bookElem);
        }

        return doc;
private org.jdom.ElementcreatePublisherElement(Publisher pub)

        Element pubElem = new Element("publisher");

        pubElem.addAttribute("id", pub.getId());
        pubElem.addContent(new Element("name").setText(pub.getName()));
        pubElem.addContent(new Element("street").setText(pub.getStreet()));
        pubElem.addContent(new Element("city").setText(pub.getCity()));
        pubElem.addContent(new Element("state").setText(pub.getState()));
        pubElem.addContent(new Element("postal").setText(pub.getPostal()));

        return pubElem;
public static voidmain(java.lang.String[] args)

        Library lib = new Library();
        LibraryJDOMCreator ljc = new LibraryJDOMCreator();
        Document doc = ljc.createDocument(lib);

        // Write the XML to System.out, indent two spaces, include
        // newlines after each element
        new XMLOutputter("  ", true, "UTF-8").output(doc, System.out);