private String toBibtex(Book book) throws IllegalArgumentException, IllegalAccessException {
String result = "@Book {";
String tabs;
Class<? extends Object> obj = book.getClass();
Field[] fields = obj.getDeclaredFields();
for (Field field : fields) {
field.setAccessible(true);
if (field.getName().equals("tags")) {
continue;
}
boolean ehto = (field.get(book) != null && !field.get(book).toString().isEmpty());
if (ehto && field.getName().equals("citation")) {
result += book.getCitation() + "\n";
continue;
}
if (ehto) {
if (field.getName().length() < 8) {
tabs = "\t\t\t";
} else {
tabs = "\t\t";
}
result += String.format("%s%s=\t\t\"%s\",\n", field.getName(), tabs, field.get(book));
}
}
int ind = result.lastIndexOf(",");
result = new StringBuilder(result).replace(ind, ind + 1, "").toString();
result += "}";
result = aakkosetBibtexMuotoon(result);
return result;
}
public void addTag(Long bookId, Tag tag) {
Book book = getBook(bookId);
book.getTags().add(tag);
addBook(book);
}