1 files changed, 61 insertions, 0 deletions
diff --git a/cps-ri/src/main/java/org/onap/cps/spi/repository/FragmentNativeRepositoryImpl.java b/cps-ri/src/main/java/org/onap/cps/spi/repository/FragmentNativeRepositoryImpl.java
new file mode 100644
index 0000000000..57dca568f2
--- /dev/null
+++ b/cps-ri/src/main/java/org/onap/cps/spi/repository/FragmentNativeRepositoryImpl.java
@@ -0,0 +1,61 @@
+/*
+ *  ============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.sql.PreparedStatement;
+import javax.persistence.EntityManager;
+import javax.persistence.PersistenceContext;
+import org.hibernate.Session;
+import org.springframework.stereotype.Repository;
+
+@Repository
+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 DELETE_FRAGMENT = "DELETE FROM fragment WHERE id =?;";
+    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 EntityManager entityManager;
+
+    @Override
+    public void deleteFragmentEntity(final long fragmentEntityId) {
+        final Session session = entityManager.unwrap(Session.class);
+        session.doWork(connection -> {
+            try (PreparedStatement preparedStatement = connection.prepareStatement(
+                    DROP_FRAGMENT_CONSTRAINT
+                            + ADD_FRAGMENT_CONSTRAINT_WITH_CASCADE
+                            + DELETE_FRAGMENT
+                            + DROP_FRAGMENT_CONSTRAINT
+                            + ADD_ORIGINAL_FRAGMENT_CONSTRAINT)) {
+                preparedStatement.setLong(1, fragmentEntityId);
+                preparedStatement.executeUpdate();
+            }
+        });
+    }
+}
+