import org.opendaylight.controller.md.sal.common.api.data.DataProvisionService;
+import org.opendaylight.controller.md.sal.common.api.data.DataReader;
+import org.opendaylight.controller.sal.binding.api.BindingAwareProvider;
import org.opendaylight.controller.sal.common.DataStoreIdentifier;
+import org.opendaylight.yangtools.concepts.Registration;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-
+/**
+ * DataProviderService is common access point for {@link BindingAwareProvider} providers
+ * to access data trees described by the YANG model.
+ *
+ */
public interface DataProviderService extends DataBrokerService, DataProvisionService<InstanceIdentifier<? extends DataObject>, DataObject> {
+
+ /**
+ * Registers a data reader for particular subtree of overal YANG data tree.
+ *
+ * Registered data reader is called if anyone tries to read data from
+ * paths which are nested to provided path.
+ *
+ * @param path Subpath which is handled by registered data reader
+ * @param reader Instance of reader which
+ * @return Registration object for reader. Invoking {@link Registration#close()} will unregister reader.
+ */
+ Registration<DataReader<InstanceIdentifier<? extends DataObject>,DataObject>> registerDataReader(InstanceIdentifier<? extends DataObject> path,DataReader<InstanceIdentifier<? extends DataObject>,DataObject> reader);
}