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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.translate;
import com.google.common.base.Optional;
import javax.annotation.Nonnull;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
/**
* Mapping context is persisted storage where mapping matadata are stored.
* A snapshot is created for each transaction to provide consistent view over context data.
* After a transaction is successfully finished, objects added to this context are propagated to backing storage.
*/
public interface MappingContext extends AutoCloseable {
/**
* Read any mapping context data
*
* @param currentId Id of an object to read
*
* @return Relevant mapping context data
*/
<T extends DataObject> Optional<T> read(@Nonnull final InstanceIdentifier<T> currentId);
/**
* Delete the node at specified path.
*
* @param path Node path
*/
void delete(InstanceIdentifier<?> path);
/**
* Merge the specified data with the currently-present data
* at specified path.
*
* @param path Node path
* @param data Data to be merged
*/
<T extends DataObject> void merge(InstanceIdentifier<T> path, T data);
/**
* Replace the data at specified path with supplied data.
*
* @param path Node path
* @param data New node data
*/
<T extends DataObject> void put(InstanceIdentifier<T> path, T data);
@Override
void close();
}
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