/**
* Save any currently active sessions in the appropriate persistence mechanism, if any. If
* persistence is not supported, this method returns without doing anything.
*
* @exception IOException if an input/output error occurs
*/
public void unload() throws IOException {
if (debug >= 1) log("Unloading persisted sessions");
// Open an output stream to the specified pathname, if any
File file = file();
if (file == null) return;
if (debug >= 1) log(sm.getString("standardManager.unloading", pathname));
FileOutputStream fos = null;
ObjectOutputStream oos = null;
try {
fos = new FileOutputStream(file.getAbsolutePath());
oos = new ObjectOutputStream(new BufferedOutputStream(fos));
} catch (IOException e) {
log(sm.getString("standardManager.unloading.ioe", e), e);
if (oos != null) {
try {
oos.close();
} catch (IOException f) {;
}
oos = null;
}
throw e;
}
// Write the number of active sessions, followed by the details
ArrayList list = new ArrayList();
synchronized (sessions) {
if (debug >= 1) log("Unloading " + sessions.size() + " sessions");
try {
oos.writeObject(new Integer(sessions.size()));
Iterator elements = sessions.values().iterator();
while (elements.hasNext()) {
StandardSession session = (StandardSession) elements.next();
list.add(session);
session.passivate();
session.writeObjectData(oos);
}
} catch (IOException e) {
log(sm.getString("standardManager.unloading.ioe", e), e);
if (oos != null) {
try {
oos.close();
} catch (IOException f) {;
}
oos = null;
}
throw e;
}
}
// Flush and close the output stream
try {
oos.flush();
oos.close();
oos = null;
} catch (IOException e) {
if (oos != null) {
try {
oos.close();
} catch (IOException f) {;
}
oos = null;
}
throw e;
}
// Expire all the sessions we just wrote
if (debug >= 1) log("Expiring " + list.size() + " persisted sessions");
Iterator expires = list.iterator();
while (expires.hasNext()) {
StandardSession session = (StandardSession) expires.next();
try {
session.expire(false);
} catch (Throwable t) {;
}
}
if (debug >= 1) log("Unloading complete");
}
