protected InputStream getInputStream() throws Exception {
if (data != null) {
return FileUtils.createInputStream(data);
}
if (inputStream != null) {
data = FileUtils.createByteArray(inputStream, true);
return FileUtils.createInputStream(data);
}
if (inputFile != null) {
inputStream = new BufferedInputStream(new FileInputStream(inputFile));
data = FileUtils.createByteArray(inputStream, true);
return FileUtils.createInputStream(data);
}
return inputStream;
}
@Override
public Book readBook() throws Exception {
if (book == null) {
if (data == null) {
data = FileUtils.createByteArray(getInputStream(), true);
}
book = new Book();
book.setTitle(bookTitle);
book = this.parseBookFromXml(book, getInputStream());
}
return book;
}