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From "Mamta A. Satoor (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DERBY-6082) Investigate if openOnServer_ field in org.apache.derby.client.am.Statement is still needed.
Date Wed, 20 Feb 2013 16:43:12 GMT
Mamta A. Satoor created DERBY-6082:

             Summary: Investigate if openOnServer_ field in org.apache.derby.client.am.Statement
is still needed.
                 Key: DERBY-6082
                 URL: https://issues.apache.org/jira/browse/DERBY-6082
             Project: Derby
          Issue Type: Task
          Components: Network Client
    Affects Versions:
            Reporter: Mamta A. Satoor

While working on DERBY-6053, there was some discussion over openOnServer_ field in org.apache.derby.client.am.Statement.
This field has following comment in Statement class
    // This means a DERBY server-side section for this statement is in the prepared state.

    // A client-side jdbc statement may remain open across commits (openOnClient=true), 
    // but the server-side DERBY section moves to an unprepared state (openOnServer=false)
across commits, 
    // requiring an implicit re-prepare "under the covers" by the driver. 
    // Unprepared jdbc query statements still have prepared sections on the server. 
    // This openOnServer_ only has implications for preparedstatement 

Kathey commented following on that field in DERBY-6053
 I do not think that comment is true about statements not staying prepared across commits.
If I prepare a statement and execute it twice with a commit in between from client, I do not
see a reprepare in the derby.log . I think maybe the openOnServer_ property may be a relic
of some place or time in the original code base when that was true.

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