Examples with SingularAttributeProxyImpl org.eclipse.persistence.internal.jpa.metamodel.proxy.SingularAttributeProxyImpl used on opensource projects

Example 1 with SingularAttributeProxyImpl

use of org.eclipse.persistence.internal.jpa.metamodel.proxy.SingularAttributeProxyImpl in project eclipselink by eclipse-ee4j.

the class EntityManagerSetupImpl method preInitializeCanonicalMetamodel.

/**
 * INTERNAL:
 * First phase of canonical metamodel initialization.  For each class the metamodel is aware of, check
 * for a canonical metamodel class and initialize each attribute in it with a proxy that can cause the
 * rest of the metamodel population.  Attributes are found reflectively rather than through the metamodel
 * to avoid having to further initialize the metamodel.
 */
public void preInitializeCanonicalMetamodel(EntityManagerFactoryImpl factory) {
    // 338837: verify that the collection is not empty - this would mean entities did not make it into the search path
    if (null == metaModel.getManagedTypes() || metaModel.getManagedTypes().isEmpty()) {
        getSession().log(SessionLog.FINER, SessionLog.METAMODEL, "metamodel_type_collection_empty");
    }
    for (ManagedType manType : metaModel.getManagedTypes()) {
        boolean classInitialized = false;
        String className = MetadataHelper.getQualifiedCanonicalName(((ManagedTypeImpl) manType).getJavaTypeName(), getSession());
        try {
            Class<?> clazz = this.getSession().getDatasourcePlatform().convertObject(className, ClassConstants.CLASS);
            classInitialized = true;
            this.getSession().log(SessionLog.FINER, SessionLog.METAMODEL, "metamodel_canonical_model_class_found", className);
            Field[] fields = null;
            if (PrivilegedAccessHelper.shouldUsePrivilegedAccess()) {
                fields = AccessController.doPrivileged(new PrivilegedGetDeclaredFields(clazz));
            } else {
                fields = PrivilegedAccessHelper.getDeclaredFields(clazz);
            }
            for (Field attribute : fields) {
                if (Attribute.class.isAssignableFrom(attribute.getType())) {
                    Object assignedAttribute = null;
                    if (PrivilegedAccessHelper.shouldUsePrivilegedAccess()) {
                        assignedAttribute = AccessController.doPrivileged(new PrivilegedGetValueFromField(attribute, null));
                    } else {
                        assignedAttribute = PrivilegedAccessHelper.getValueFromField(attribute, null);
                    }
                    AttributeProxyImpl proxy = null;
                    if (assignedAttribute == null) {
                        if (SingularAttribute.class.isAssignableFrom(attribute.getType())) {
                            proxy = new SingularAttributeProxyImpl();
                        } else if (MapAttribute.class.isAssignableFrom(attribute.getType())) {
                            proxy = new MapAttributeProxyImpl();
                        } else if (SetAttribute.class.isAssignableFrom(attribute.getType())) {
                            proxy = new SetAttributeProxyImpl();
                        } else if (ListAttribute.class.isAssignableFrom(attribute.getType())) {
                            proxy = new ListAttributeProxyImpl();
                        } else if (CollectionAttribute.class.isAssignableFrom(attribute.getType())) {
                            proxy = new CollectionAttributeProxyImpl();
                        }
                        if (proxy != null) {
                            attribute.setAccessible(true);
                            attribute.set(null, proxy);
                        }
                    } else if (assignedAttribute instanceof AttributeProxyImpl) {
                        proxy = (AttributeProxyImpl) assignedAttribute;
                    }
                    if (proxy != null) {
                        proxy.addFactory(factory);
                    }
                }
            }
        } catch (PrivilegedActionException pae) {
            getSession().logThrowable(SessionLog.FINEST, SessionLog.METAMODEL, pae);
        } catch (IllegalAccessException iae) {
            getSession().logThrowable(SessionLog.FINEST, SessionLog.METAMODEL, iae);
        } catch (ConversionException ce) {
        }
        if (!classInitialized) {
            getSession().log(SessionLog.FINER, SessionLog.METAMODEL, "metamodel_canonical_model_class_not_found", className);
        }
    }
}