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/*
* ============LICENSE_START=======================================================
* Copyright (C) 2021 Nordix Foundation
* ================================================================================
* 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.cps.spi.impl;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.ImmutableSet.Builder;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import org.onap.cps.spi.CpsDataPersistenceService;
import org.onap.cps.spi.entities.AnchorEntity;
import org.onap.cps.spi.entities.DataspaceEntity;
import org.onap.cps.spi.entities.FragmentEntity;
import org.onap.cps.spi.model.DataNode;
import org.onap.cps.spi.repository.AnchorRepository;
import org.onap.cps.spi.repository.DataspaceRepository;
import org.onap.cps.spi.repository.FragmentRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class CpsDataPersistenceServiceImpl implements CpsDataPersistenceService {
@Autowired
private DataspaceRepository dataspaceRepository;
@Autowired
private AnchorRepository anchorRepository;
@Autowired
private FragmentRepository fragmentRepository;
private static final Gson GSON = new GsonBuilder().create();
@Override
public void storeDataNode(final String dataspaceName, final String anchorName, final DataNode dataNode) {
final DataspaceEntity dataspaceEntity = dataspaceRepository.getByName(dataspaceName);
final AnchorEntity anchorEntity = anchorRepository.getByDataspaceAndName(dataspaceEntity, anchorName);
final FragmentEntity fragmentEntity = convertToFragmentWithAllDescendants(dataspaceEntity, anchorEntity,
dataNode);
fragmentRepository.save(fragmentEntity);
}
/**
* Convert DataNode object into Fragment and places the result in the fragments placeholder. Performs same action
* for all DataNode children recursively.
*
* @param dataspaceEntity dataspace
* @param anchorEntity anchorEntity
* @param dataNodeToBeConverted dataNode
* @return a Fragment built from current DataNode
*/
private static FragmentEntity convertToFragmentWithAllDescendants(final DataspaceEntity dataspaceEntity,
final AnchorEntity anchorEntity, final DataNode dataNodeToBeConverted) {
final FragmentEntity parentFragment = FragmentEntity.builder()
.dataspace(dataspaceEntity)
.anchor(anchorEntity)
.xpath(dataNodeToBeConverted.getXpath())
.attributes(GSON.toJson(dataNodeToBeConverted.getLeaves()))
.build();
final Builder<FragmentEntity> fragmentEntityBuilder = ImmutableSet.builder();
for (final DataNode childDataNode : dataNodeToBeConverted.getChildDataNodes()) {
final FragmentEntity childFragment =
convertToFragmentWithAllDescendants(parentFragment.getDataspace(), parentFragment.getAnchor(),
childDataNode);
fragmentEntityBuilder.add(childFragment);
}
parentFragment.setChildFragments(fragmentEntityBuilder.build());
return parentFragment;
}
}
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