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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2022 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.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.UUID;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import lombok.SneakyThrows;
import lombok.extern.slf4j.Slf4j;
import org.onap.cps.spi.model.ModuleReference;
import org.springframework.transaction.annotation.Transactional;
@Slf4j
@Transactional
public class ModuleReferenceRepositoryImpl implements ModuleReferenceQuery {
@PersistenceContext
private EntityManager entityManager;
@Override
@SneakyThrows
public Collection<ModuleReference> identifyNewModuleReferences(
final Collection<ModuleReference> moduleReferencesToCheck) {
if (moduleReferencesToCheck == null || moduleReferencesToCheck.isEmpty()) {
return Collections.EMPTY_LIST;
}
final String tempTableName = "moduleReferencesToCheckTemp"
+ UUID.randomUUID().toString().replaceAll("-", "");
createTemporaryTable(tempTableName);
insertDataIntoTable(tempTableName, moduleReferencesToCheck);
return identifyNewModuleReferencesForCmHandle(tempTableName);
}
private void createTemporaryTable(final String tempTableName) {
final StringBuilder sqlStringBuilder = new StringBuilder("CREATE TEMPORARY TABLE " + tempTableName + "(");
sqlStringBuilder.append(" id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY,");
sqlStringBuilder.append(" module_name varchar NOT NULL,");
sqlStringBuilder.append(" revision varchar NOT NULL");
sqlStringBuilder.append(");");
entityManager.createNativeQuery(sqlStringBuilder.toString()).executeUpdate();
}
private void insertDataIntoTable(final String tempTableName, final Collection<ModuleReference> moduleReferences) {
final StringBuilder sqlStringBuilder = new StringBuilder("INSERT INTO " + tempTableName);
sqlStringBuilder.append(" (module_name, revision) ");
sqlStringBuilder.append(" VALUES ");
for (final ModuleReference moduleReference : moduleReferences) {
sqlStringBuilder.append("('");
sqlStringBuilder.append(moduleReference.getModuleName());
sqlStringBuilder.append("', '");
sqlStringBuilder.append(moduleReference.getRevision());
sqlStringBuilder.append("'),");
}
// replace last ',' with ';'
sqlStringBuilder.replace(sqlStringBuilder.length() - 1, sqlStringBuilder.length(), ";");
entityManager.createNativeQuery(sqlStringBuilder.toString()).executeUpdate();
}
private Collection<ModuleReference> identifyNewModuleReferencesForCmHandle(final String tempTableName) {
final String sql = String.format(
"SELECT %1$s.module_name, %1$s.revision"
+ " FROM %1$s LEFT JOIN yang_resource"
+ " ON yang_resource.module_name=%1$s.module_name"
+ " AND yang_resource.revision=%1$s.revision"
+ " WHERE yang_resource.module_name IS NULL;", tempTableName);
final List<Object[]> resultsAsObjects =
entityManager.createNativeQuery(sql).getResultList();
final List<ModuleReference> resultsAsModuleReferences = new ArrayList<>(resultsAsObjects.size());
for (final Object[] row : resultsAsObjects) {
resultsAsModuleReferences.add(new ModuleReference((String) row[0], (String) row[1]));
}
return resultsAsModuleReferences;
}
}
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