/**
* Method which returns the previous entry for the given entry
*
* @param entry The entry to fetch the previous entry for
* @command The command to return the result to
*/
protected void getPreviousEntry(LogEntry entry, Continuation command) {
if (entry == entries[0]) {
getPreviousEntry(
new StandardContinuation(command) {
public void receiveResult(Object o) {
if (o instanceof CoalescedLogEntry) {
LogEntry[] otherEntries = ((CoalescedLogEntry) o).getEntries();
parent.receiveResult(otherEntries[otherEntries.length - 1]);
} else {
parent.receiveResult(o);
}
}
});
} else {
for (int i = 1; i < entries.length; i++)
if (entries[i] == entry) {
command.receiveResult(entries[i - 1]);
return;
}
if (entry == null) {
command.receiveResult(entries[entries.length - 1]);
return;
}
command.receiveException(
new IllegalArgumentException("ERROR: Could not find previous entry for " + entry));
}
}
