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/*
* ============LICENSE_START=======================================================
* Copyright (C) 2023 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.repository;
import java.util.Collection;
import java.util.Collections;
import java.util.stream.Collectors;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
import lombok.RequiredArgsConstructor;
@RequiredArgsConstructor
public class FragmentNativeRepositoryImpl implements FragmentNativeRepository {
private static final String DROP_FRAGMENT_CONSTRAINT
= "ALTER TABLE fragment DROP CONSTRAINT fragment_parent_id_fkey;";
private static final String ADD_FRAGMENT_CONSTRAINT_WITH_CASCADE
= "ALTER TABLE fragment ADD CONSTRAINT fragment_parent_id_fkey FOREIGN KEY (parent_id) "
+ "REFERENCES fragment (id) ON DELETE CASCADE;";
private static final String ADD_ORIGINAL_FRAGMENT_CONSTRAINT
= "ALTER TABLE fragment ADD CONSTRAINT fragment_parent_id_fkey FOREIGN KEY (parent_id) "
+ "REFERENCES fragment (id) ON DELETE NO ACTION;";
@PersistenceContext
private final EntityManager entityManager;
@Override
public void deleteFragmentEntity(final long fragmentEntityId) {
entityManager.createNativeQuery(
addFragmentConstraintWithDeleteCascade("DELETE FROM fragment WHERE id = ?"))
.setParameter(1, fragmentEntityId)
.executeUpdate();
}
@Override
public void deleteByAnchorIdAndXpaths(final int anchorId, final Collection<String> xpaths) {
final String queryString = addFragmentConstraintWithDeleteCascade(
"DELETE FROM fragment f WHERE f.anchor_id = ? AND (f.xpath IN (:parameterPlaceholders))");
executeUpdateWithAnchorIdAndCollection(queryString, anchorId, xpaths);
}
@Override
public void deleteListsByAnchorIdAndXpaths(final int anchorId, final Collection<String> listXpaths) {
final Collection<String> listXpathPatterns =
listXpaths.stream().map(listXpath -> listXpath + "[%").collect(Collectors.toSet());
final String queryString = addFragmentConstraintWithDeleteCascade(
"DELETE FROM fragment f WHERE f.anchor_id = ? AND (f.xpath LIKE ANY (array[:parameterPlaceholders]))");
executeUpdateWithAnchorIdAndCollection(queryString, anchorId, listXpathPatterns);
}
// Accept security hotspot as placeholders in SQL query are created internally, not from user input.
@SuppressWarnings("squid:S2077")
private void executeUpdateWithAnchorIdAndCollection(final String sqlTemplate, final int anchorId,
final Collection<String> collection) {
if (!collection.isEmpty()) {
final String parameterPlaceholders = String.join(",", Collections.nCopies(collection.size(), "?"));
final String queryStringWithParameterPlaceholders =
sqlTemplate.replaceFirst(":parameterPlaceholders\\b", parameterPlaceholders);
final Query query = entityManager.createNativeQuery(queryStringWithParameterPlaceholders);
query.setParameter(1, anchorId);
int parameterIndex = 2;
for (final String parameterValue : collection) {
query.setParameter(parameterIndex++, parameterValue);
}
query.executeUpdate();
}
}
private static String addFragmentConstraintWithDeleteCascade(final String queryString) {
return DROP_FRAGMENT_CONSTRAINT
+ ADD_FRAGMENT_CONSTRAINT_WITH_CASCADE
+ queryString + ";"
+ DROP_FRAGMENT_CONSTRAINT
+ ADD_ORIGINAL_FRAGMENT_CONSTRAINT;
}
}
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