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/*
* 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));
}
}
}
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