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-rw-r--r--v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/ReflexiveAugmentWriterCustomizer.java50
1 files changed, 50 insertions, 0 deletions
diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/ReflexiveAugmentWriterCustomizer.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/ReflexiveAugmentWriterCustomizer.java
new file mode 100644
index 000000000..6d29214b3
--- /dev/null
+++ b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/ReflexiveAugmentWriterCustomizer.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.honeycomb.v3po.translate.util.write;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkState;
+
+import com.google.common.base.Optional;
+import io.fd.honeycomb.v3po.translate.spi.write.ChildWriterCustomizer;
+import javax.annotation.Nonnull;
+import org.opendaylight.yangtools.yang.binding.Augmentable;
+import org.opendaylight.yangtools.yang.binding.Augmentation;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+/**
+ * Might be slow !
+ */
+public class ReflexiveAugmentWriterCustomizer<C extends DataObject> extends NoopWriterCustomizer<C> implements
+ ChildWriterCustomizer<C> {
+
+ @Nonnull
+ @Override
+ @SuppressWarnings("unchecked")
+ public Optional<C> extract(@Nonnull final InstanceIdentifier<C> currentId, @Nonnull final DataObject parentData) {
+ checkArgument(parentData instanceof Augmentable<?>, "Not augmnatable parent object: %s", parentData);
+ final Class<C> currentType = currentId.getTargetType();
+ final Augmentation<?> augmentation = ((Augmentable) parentData).getAugmentation(currentType);
+ if(augmentation == null) {
+ return Optional.absent();
+ } else {
+ checkState(currentType.isAssignableFrom(augmentation.getClass()));
+ return Optional.of(currentType.cast(augmentation));
+ }
+ }
+}