public Map<String, Object> data(IBookCollection<Book> collection) {
final Map<String, Object> map = new HashMap<String, Object>();
map.put("generation", myGeneration.getValue());
map.put("timestamp", System.currentTimeMillis());
final Book currentBook = collection.getRecentBook(0);
if (currentBook != null) {
final String oldHash = myCurrentBookHash.getValue();
final String newHash = collection.getHash(currentBook, true);
if (newHash != null && !newHash.equals(oldHash)) {
myCurrentBookHash.setValue(newHash);
if (oldHash.length() != 0) {
myCurrentBookTimestamp.setValue(String.valueOf(System.currentTimeMillis()));
myServerBook.reset();
}
}
final String currentBookHash = newHash != null ? newHash : oldHash;
final Map<String, Object> currentBookMap = new HashMap<String, Object>();
currentBookMap.put("hash", currentBookHash);
currentBookMap.put("title", currentBook.getTitle());
try {
currentBookMap.put("timestamp", Long.parseLong(myCurrentBookTimestamp.getValue()));
} catch (Exception e) {
}
map.put("currentbook", currentBookMap);
final List<Map<String, Object>> lst = new ArrayList<Map<String, Object>>();
if (positionOption(currentBookHash).getValue().length() == 0) {
final Map<String, Object> posMap = positionMap(collection, currentBook);
if (posMap != null) {
posMap.put("hash", currentBookHash);
lst.add(posMap);
}
}
if (!currentBookHash.equals(oldHash) && positionOption(oldHash).getValue().length() == 0) {
final Map<String, Object> posMap =
positionMap(collection, collection.getBookByHash(oldHash));
if (posMap != null) {
posMap.put("hash", oldHash);
lst.add(posMap);
}
}
if (lst.size() > 0) {
map.put("positions", lst);
}
}
System.err.println("DATA = " + map);
return map;
}
private Map<String, Object> positionMap(IBookCollection<Book> collection, Book book) {
if (book == null) {
return null;
}
final ZLTextFixedPosition.WithTimestamp pos = collection.getStoredPosition(book.getId());
return pos != null ? position2Map(pos) : null;
}