[GitHub] tomcat issue #41: Check and update session record if one already exists.

[ChristopherSchultz <gi...@git.apache.org>]

Github user ChristopherSchultz commented on the issue:

    https://github.com/apache/tomcat/pull/41
  
    You should use SELECT ... FOR UPDATE instead of SELECT / UPDATE. Much less code and transactionally-safe. Also, if you use SELECT ... FOR UPDATE, you can use ResultSet.moveToInsertRow to insert a record if necessary.


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