@Override
public Book createBook(Book book) {
Document original = __wrapper.getDocument();
Document doc = __wrapper.getDocument();
try {
Map<String, String> values = new HashMap<String, String>();
values.put("isbn", book.getIsbn());
values.put("publisher", book.getPublisher());
values.put("title", book.getTitle());
values.put("year", book.getYear() + "");
values.put("authorIds", Utility.getInstance().join(",", book.getAuthorIds()));
doc = __wrapper.createEntry(doc, values);
__wrapper.commit(doc);
} catch (Exception e) {
e.printStackTrace();
__wrapper.rollback(original);
return null;
}
return book;
}
// load initial settings
static {
try {
Properties dbProperties = new Properties();
dbProperties.load(
AuthorDAORdbmsImpl.class.getClassLoader().getResourceAsStream("xml.properties"));
String contextPath = System.getProperty("catalina.home");
String relativePath = dbProperties.getProperty("relativePath");
__fileName = contextPath + "/" + relativePath + "_book.xml";
__wrapper = new XmlWrapper(__fileName, "book", Book.getAttributeNames());
} catch (Throwable t) {
t.printStackTrace();
}
}
@Override
public boolean deleteBook(Book book) {
Document original = __wrapper.getDocument();
Document doc = __wrapper.getDocument();
try {
doc = __wrapper.deleteEntry(doc, "isbn", book.getIsbn());
if (doc == null) {
return false;
} else {
__wrapper.commit(doc);
return true;
}
} catch (Exception e) {
e.printStackTrace();
__wrapper.rollback(original);
return false;
}
}