Examples with EntityManagerFactoryLookup org.jboss.as.jpa.management.EntityManagerFactoryLookup used on opensource projects

Example 1 with EntityManagerFactoryLookup

use of org.jboss.as.jpa.management.EntityManagerFactoryLookup in project wildfly by wildfly.

the class JPAService method createManagementStatisticsResource.

/**
     * Create single instance of management statistics resource per managementAdaptor version.
     *
     * ManagementAccess
     *
     * The persistence provider and jipijapa adapters will be in the same classloader,
     * either a static module or included directly in the application.  Those are the two supported use
     * cases for management of deployment persistence units also.
     *
     * From a management point of view, the requirements are:
     *   1.  show management statistics for static persistence provider modules and applications that have
     *       their own persistence provider module.
     *
     *   2.  persistence provider adapters will provide a unique key that identifies the management version of supported
     *       management statistics/operations.  For example, Hibernate 3.x might be 1.0, Hibernate 4.1/4.2 might
     *       be version 2.0 and Hibernate 4.3 could be 2.0 also as long as its compatible (same stats) with 4.1/4.2.
     *       Eventually, a Hibernate (later version) change in statistics is likely to happen, the management version
     *       will be incremented.
     *
     *
     * @param managementAdaptor the management adaptor that will provide statistics
     * @param scopedPersistenceUnitName name of the persistence unit
     * @param deploymentUnit deployment unit for the deployment requesting a resource
     * @return the management resource
     */
public static Resource createManagementStatisticsResource(final ManagementAdaptor managementAdaptor, final String scopedPersistenceUnitName, final DeploymentUnit deploymentUnit) {
    synchronized (existingResourceDescriptionResolver) {
        final EntityManagerFactoryLookup entityManagerFactoryLookup = new EntityManagerFactoryLookup();
        final Statistics statistics = managementAdaptor.getStatistics();
        if (false == existingResourceDescriptionResolver.contains(managementAdaptor.getVersion())) {
            // setup statistics (this used to be part of JPA subsystem startup)
            ResourceDescriptionResolver resourceDescriptionResolver = new StandardResourceDescriptionResolver(statistics.getResourceBundleKeyPrefix(), statistics.getResourceBundleName(), statistics.getClass().getClassLoader()) {

                private ResourceDescriptionResolver fallback = JPAExtension.getResourceDescriptionResolver();

                //add a fallback in case provider doesn't have all properties properly defined
                @Override
                public String getResourceAttributeDescription(String attributeName, Locale locale, ResourceBundle bundle) {
                    if (bundle.containsKey(getBundleKey(attributeName))) {
                        return super.getResourceAttributeDescription(attributeName, locale, bundle);
                    } else {
                        return fallback.getResourceAttributeDescription(attributeName, locale, fallback.getResourceBundle(locale));
                    }
                }
            };
            PathElement subsystemPE = PathElement.pathElement(ModelDescriptionConstants.SUBSYSTEM, JPAExtension.SUBSYSTEM_NAME);
            ManagementResourceRegistration deploymentResourceRegistration = deploymentUnit.getAttachment(DeploymentModelUtils.MUTABLE_REGISTRATION_ATTACHMENT);
            ManagementResourceRegistration deploymentSubsystemRegistration = deploymentResourceRegistration.getSubModel(PathAddress.pathAddress(subsystemPE));
            ManagementResourceRegistration subdeploymentSubsystemRegistration = deploymentResourceRegistration.getSubModel(PathAddress.pathAddress(PathElement.pathElement(ModelDescriptionConstants.SUBDEPLOYMENT), subsystemPE));
            ManagementResourceRegistration providerResource = deploymentSubsystemRegistration.registerSubModel(new ManagementResourceDefinition(PathElement.pathElement(managementAdaptor.getIdentificationLabel()), resourceDescriptionResolver, statistics, entityManagerFactoryLookup));
            providerResource.registerReadOnlyAttribute(PersistenceUnitServiceHandler.SCOPED_UNIT_NAME, null);
            providerResource = subdeploymentSubsystemRegistration.registerSubModel(new ManagementResourceDefinition(PathElement.pathElement(managementAdaptor.getIdentificationLabel()), resourceDescriptionResolver, statistics, entityManagerFactoryLookup));
            providerResource.registerReadOnlyAttribute(PersistenceUnitServiceHandler.SCOPED_UNIT_NAME, null);
            existingResourceDescriptionResolver.add(managementAdaptor.getVersion());
        }
        // create (per deployment) dynamic Resource implementation that can reflect the deployment specific names (e.g. jpa entity classname/Hibernate region name)
        return new DynamicManagementStatisticsResource(statistics, scopedPersistenceUnitName, managementAdaptor.getIdentificationLabel(), entityManagerFactoryLookup);
    }
}