> However I wonder if there is an easier way to achieve this? I thought there was an easier way... but after digging around a bit I didn't come up with anything better. While what you are doing is completely valid, I'd almost recommend the creation of a helper method that will disable/enable the QueryReultsCache when you create a query. A custom JDBCBrokerFactory seems like quite a lot of complexity when you could just call .setQueryCacheEnabled(false) when you do/don't want caching... then again, that is just my opinion.
I think the ideal solution would involve the addition of a new configuration property to OpenJPAConfigurationImpl. Something similar to openjpa.MaxFetchDepth[1]. Thanks, Rick [1] http://ci.apache.org/projects/openjpa/trunk/docbook/manual.html#openjpa.MaxFetchDepth On Mon, Nov 10, 2014 at 1:30 AM, Jörn Gersdorf <joern.gersd...@gmail.com> wrote: > Hi, > > I´d like to enable OpenJPA´s query cache 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 ended up subclassing JDBCBrokerFactory and configure this via property > openjpa.BrokerFactory (see code below). > > However I wonder if there is an easier way to achieve this? > > Thanks and best regards, > Jörn > > Code: > > <property name="openjpa.BrokerFactory" > value="de.dwpbank.wp2d.wprecon.model.cache.CustomJDBCBrokerFactory" /> > > > public class CustomJDBCBrokerFactory extends JDBCBrokerFactory { > > public CustomJDBCBrokerFactory(JDBCConfiguration conf) { > super(conf); > } > > @Override > protected StoreManager newStoreManager() { > return new JDBCStoreManager() { > @Override > public FetchConfiguration newFetchConfiguration() { > return > super.newFetchConfiguration().setQueryCacheEnabled(false); > } > }; > } > > public static CustomJDBCBrokerFactory newInstance(ConfigurationProvider > cp) { > JDBCConfigurationImpl conf = new JDBCConfigurationImpl(); > cp.setInto(conf); > return new CustomJDBCBrokerFactory(conf); > } > } > -- *Rick Curtis*
