org.glassfish.osgijpa.extension.OSGiJPAExtnBundleActivator Maven / Gradle / Ivy
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package org.glassfish.osgijpa.extension;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import javax.persistence.spi.PersistenceProviderResolver;
import javax.persistence.spi.PersistenceProviderResolverHolder;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* This activator is responsible for setting persistence provider resolver that enables discovery of providers
* even if thread's context class loader is not properly set.
*
* @author [email protected]
*/
public class OSGiJPAExtnBundleActivator implements BundleActivator {
private Logger logger = Logger.getLogger(getClass().getPackage().getName());
private static final String USE_OSGI_PROVIDER_RESOLVER =
"org.glassfish.osgjpa.extension.useHybridPersistenceProviderResolver";
private static final String OSGI_PROVIDER_RESOLVER_CACHING_ENABLED =
"org.glassfish.osgjpa.extension.hybridPersistenceProviderResolver.cachingEnabled";
public void start(BundleContext context) throws Exception {
boolean useOSGiProviderResolver = Boolean.parseBoolean(context.getProperty(USE_OSGI_PROVIDER_RESOLVER));
if (useOSGiProviderResolver) {
boolean cachingEnabled = Boolean.parseBoolean(context.getProperty(OSGI_PROVIDER_RESOLVER_CACHING_ENABLED));
final javax.persistence.spi.PersistenceProviderResolver oldResolver =
PersistenceProviderResolverHolder.getPersistenceProviderResolver();
final PersistenceProviderResolver newResolver = new HybridPersistenceProviderResolver(cachingEnabled);
PersistenceProviderResolverHolder.setPersistenceProviderResolver(
newResolver);
logger.logp(Level.FINE, "OSGiJPAExtnBundleActivator", "start", "Old resolver = {0}, New Reoslver = {1} ",
new Object[]{oldResolver, newResolver});
}
}
public void stop(BundleContext context) throws Exception {
PersistenceProviderResolverHolder.setPersistenceProviderResolver(null);
}
}