/**
* Deletes the specified offline message in the store for a user. The way to identify the message
* to delete is based on the creationDate and username.
*
* @param username the username of the user who's message is going to be deleted.
* @param creationDate the date when the offline message was stored in the database.
*/
public void deleteMessage(String username, Date creationDate) {
Connection con = null;
PreparedStatement pstmt = null;
try {
con = DbConnectionManager.getConnection();
pstmt = con.prepareStatement(DELETE_OFFLINE_MESSAGE);
pstmt.setString(1, username);
pstmt.setString(2, StringUtils.dateToMillis(creationDate));
pstmt.executeUpdate();
// Force a refresh for next call to getSize(username),
// it's easier than loading the message to be deleted just
// to update the cache.
removeUsernameFromSizeCache(username);
} catch (Exception e) {
Log.error(
"Error deleting offline messages of username: "******" creationDate: "
+ creationDate,
e);
} finally {
DbConnectionManager.closeConnection(pstmt, con);
}
}
/**
* Deletes all offline messages in the store for a user.
*
* @param username the username of the user who's messages are going to be deleted.
*/
public void deleteMessages(String username) {
Connection con = null;
PreparedStatement pstmt = null;
try {
con = DbConnectionManager.getConnection();
pstmt = con.prepareStatement(DELETE_OFFLINE);
pstmt.setString(1, username);
pstmt.executeUpdate();
removeUsernameFromSizeCache(username);
} catch (Exception e) {
Log.error("Error deleting offline messages of username: " + username, e);
} finally {
DbConnectionManager.closeConnection(pstmt, con);
}
}
/**
* Returns a Collection of all messages in the store for a user. Messages may be deleted after
* being selected from the database depending on the delete param.
*
* @param username the username of the user who's messages you'd like to receive.
* @param delete true if the offline messages should be deleted.
* @return An iterator of packets containing all offline messages.
*/
public Collection<OfflineMessage> getMessages(String username, boolean delete) {
List<OfflineMessage> messages = new ArrayList<>();
SAXReader xmlReader = null;
Connection con = null;
PreparedStatement pstmt = null;
ResultSet rs = null;
try {
// Get a sax reader from the pool
xmlReader = xmlReaders.take();
con = DbConnectionManager.getConnection();
pstmt = con.prepareStatement(LOAD_OFFLINE);
pstmt.setString(1, username);
rs = pstmt.executeQuery();
while (rs.next()) {
String msgXML = rs.getString(1);
Date creationDate = new Date(Long.parseLong(rs.getString(2).trim()));
OfflineMessage message;
try {
message =
new OfflineMessage(
creationDate, xmlReader.read(new StringReader(msgXML)).getRootElement());
} catch (DocumentException e) {
// Try again after removing invalid XML chars (e.g. )
Matcher matcher = pattern.matcher(msgXML);
if (matcher.find()) {
msgXML = matcher.replaceAll("");
}
try {
message =
new OfflineMessage(
creationDate, xmlReader.read(new StringReader(msgXML)).getRootElement());
} catch (DocumentException de) {
Log.error("Failed to route packet (offline message): " + msgXML, de);
continue; // skip and process remaining offline messages
}
}
// if there is already a delay stamp, we shouldn't add another.
Element delaytest = message.getChildElement("delay", "urn:xmpp:delay");
if (delaytest == null) {
// Add a delayed delivery (XEP-0203) element to the message.
Element delay = message.addChildElement("delay", "urn:xmpp:delay");
delay.addAttribute("from", XMPPServer.getInstance().getServerInfo().getXMPPDomain());
delay.addAttribute("stamp", XMPPDateTimeFormat.format(creationDate));
}
messages.add(message);
}
// Check if the offline messages loaded should be deleted, and that there are
// messages to delete.
if (delete && !messages.isEmpty()) {
PreparedStatement pstmt2 = null;
try {
pstmt2 = con.prepareStatement(DELETE_OFFLINE);
pstmt2.setString(1, username);
pstmt2.executeUpdate();
removeUsernameFromSizeCache(username);
} catch (Exception e) {
Log.error("Error deleting offline messages of username: "******"Error retrieving offline messages of username: " + username, e);
} finally {
DbConnectionManager.closeConnection(rs, pstmt, con);
// Return the sax reader to the pool
if (xmlReader != null) {
xmlReaders.add(xmlReader);
}
}
return messages;
}