Populate model/ hierarchy

[yangtools.git] / model / yang-model-api / src / main / java / org / opendaylight / yangtools / yang / model / api / stmt / compat / NotificationNodeContainerCompat.java

diff --git a/model/yang-model-api/src/main/java/org/opendaylight/yangtools/yang/model/api/stmt/compat/NotificationNodeContainerCompat.java b/model/yang-model-api/src/main/java/org/opendaylight/yangtools/yang/model/api/stmt/compat/NotificationNodeContainerCompat.java
new file mode 100644 (file)
index 0000000..16e9dc3
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+++ b/model/yang-model-api/src/main/java/org/opendaylight/yangtools/yang/model/api/stmt/compat/NotificationNodeContainerCompat.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2019 PANTHEON.tech, s.r.o. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.yangtools.yang.model.api.stmt.compat;
+
+import com.google.common.annotations.Beta;
+import java.util.Optional;
+import org.opendaylight.yangtools.yang.common.QName;
+import org.opendaylight.yangtools.yang.model.api.NotificationDefinition;
+import org.opendaylight.yangtools.yang.model.api.NotificationNodeContainer;
+import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
+import org.opendaylight.yangtools.yang.model.api.stmt.SchemaTreeAwareEffectiveStatement;
+
+/**
+ * Compatibility bridge between {@link NotificationNodeContainer#findNotification(QName)} and
+ * {@link SchemaTreeAwareEffectiveStatement}.
+ */
+@Beta
+public interface NotificationNodeContainerCompat<A, D extends DeclaredStatement<A>,
+        E extends SchemaTreeAwareEffectiveStatement<A, D>>
+        extends SchemaTreeAwareEffectiveStatement<A, D>, NotificationNodeContainer {
+
+    @Override
+    default Optional<NotificationDefinition> findNotification(final QName qname) {
+        // 'notification' identifier must never collide with another element, hence if we look it up and it ends up
+        // being an NotificationDefinition, we have found a match.
+        return get(Namespace.class, qname)
+                .flatMap(child -> child instanceof NotificationDefinition ? Optional.of(child) : Optional.empty());
+    }
+}