[jira] [Created] (OPENJPA-2543) Add possibility to disable QueryCache by default (new config property)

["Jörn Gersdorf (JIRA)" <ji...@apache.org>]

Jörn Gersdorf created OPENJPA-2543:
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             Summary: Add possibility to disable QueryCache by default (new config property)
                 Key: OPENJPA-2543
                 URL: https://issues.apache.org/jira/browse/OPENJPA-2543
             Project: OpenJPA
          Issue Type: Improvement
          Components: jdbc
    Affects Versions: 2.3.0
            Reporter: Jörn Gersdorf


As discussed on the [openjpa-user MailingList|http://mail-archives.apache.org/mod_mbox/openjpa-users/201411.mbox/%3CCALLZsMnXPQT%2BeQB3VjYe4U05%2BgSR%2Bw37QqXGRdxdvM-kgEXdLw%40mail.gmail.com%3E] I need to enable the OpenJPA QueryCache in a selective way, i. e. it should be disabled unless I enable it explicitly using query.getFetchPlan().setQueryResult(true).

I´ve figured out that this requires {{FetchConfigurationImpl$ConfigurationState#queryCache}} to be set to false by default, however, there does not seem to be a configuration property for this.

So I propose a new configuration property like {{openjpa.jdbc.QueryCacheDefaultState}}, defaulting to {{true}} (the current default), with possibility to set to {{false}}. This would set the property {{FetchConfigurationImpl$ConfigurationState#queryCache}} accordingly.



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