diff options
Diffstat (limited to 'v3po/translate-utils/src')
-rw-r--r-- | v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/ReflexiveAugmentWriterCustomizer.java | 50 |
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)); + } + } +} |