Add unique constraints to prevent person_documnt and accompanyingcourse_document with duplicated object_id

This change ensures `object_id` uniqueness within `person_document` and `accompanyingcourse_document` tables. It includes migration scripts and entity annotations to enforce these constraints. This helps maintain data integrity and consistency across the database.

src/Bundle/ChillDocStoreBundle/migrations/Version20241118151618.php

@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Chill\Migrations\DocStore;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+final class Version20241118151618 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Force no duplicated object_id within person_document and accompanyingcourse_document';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql(<<<'SQL'
+        WITH ranked AS (
+            SELECT id, rank() OVER (PARTITION BY object_id ORDER BY id ASC) FROM chill_doc.accompanyingcourse_document
+        )
+        DELETE FROM chill_doc.accompanyingcourse_document WHERE id IN (SELECT id FROM ranked where "rank" <> 1)
+        SQL);
+        $this->addSql('CREATE UNIQUE INDEX acc_course_document_unique_stored_object ON chill_doc.accompanyingcourse_document (object_id)');
+        $this->addSql('CREATE UNIQUE INDEX person_document_unique_stored_object ON chill_doc.person_document (object_id)');
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql('DROP INDEX acc_course_document_unique_stored_object');
+        $this->addSql('DROP INDEX person_document_unique_stored_object');
+    }
+}