Jan-Philipp Niewerth created MAILBOX-198:
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Summary: Improve SimpleMessageSearchIndex performance
Key: MAILBOX-198
URL: https://issues.apache.org/jira/browse/MAILBOX-198
Project: James Mailbox
Issue Type: Improvement
Reporter: Jan-Philipp Niewerth
SimpleMessageSearchIndex has O(n^2) performance for searches at the moment.
This leads to very bad message check performance for e.g the Android Mailclient
on big mailboxes.
The reason for that is that the current code buffers messages in an ArrayList
while performing an contains() check before each add(). A TreeSet is more
appropriate here reducing runtime to O(n*log(n)).
Furthermore the existing UID range optimization is not effective when other
criteria are conjugated with the query.
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