infra/util/src/main/java/org/apache/shardingsphere/infra/util/yaml/swapper/YamlDataNodeConfigurationSwapper.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.shardingsphere.infra.util.yaml.swapper;

import org.apache.shardingsphere.infra.util.yaml.datanode.RepositoryTuple;

import java.util.Collection;
import java.util.Optional;

/**
 * YAML data node configuration swapper.
 *
 * @param <T> type of swapped object
 */
public interface YamlDataNodeConfigurationSwapper<T> {
    
    /**
    * Swap to repository tuples.
    *
    * @param data data to be swapped
    * @return repository tuples
    */
    Collection<RepositoryTuple> swapToRepositoryTuples(T data);
    
    /**
     * Swap from repository tuple to object.
     *
     * @param repositoryTuples repository tuples
     * @return swapped object
     */
    Optional<T> swapToObject(Collection<RepositoryTuple> repositoryTuples);
}