fix #97 Make process_execution.context nullable, as in the mapping

CHANGELOG.md

@@ -11,7 +11,7 @@ Latest
 * [#89](https://github.com/cleverage/ui-process-bundle/issues/89) `ProcessConfigurationsManager`: resolve the `ui.default` option with a normalizer instead of nested options defined with `setDefault()` (deprecated since symfony/options-resolver 7.3, removed in 8.0). With Symfony 8, a process launched with the UI form (`ui_launch_mode: form`) without `ui.default` no longer fails (`Cannot use object of type Closure as array`), and `ui.default` is validated again. Add tests.
 * [#91](https://github.com/cleverage/ui-process-bundle/issues/91) `LoginController`: pass `error` and `last_username` (`AuthenticationUtils`) to the login template, so that a failed login displays the error message and keeps the email. Test updated.
 * [#95](https://github.com/cleverage/ui-process-bundle/issues/95) `DoctrineProcessHandler`: detach the written `LogRecord` entities after each flush (the Monolog records were detached instead), so that the identity map no longer grows during long processes; `LogRecord::$processExecution` cascade reduced from `all` to `persist`, so that detaching a log record does not detach the current process execution (which would then be inserted again). Add tests.
-* [#97](https://github.com/cleverage/ui-process-bundle/issues/97) Align the mapping and the schema created by the migrations: `ProcessSchedule::$input` mapped as `VARCHAR(255)` as created by the migrations (was `TEXT`); `Version20261005120000` migration (MySQL / MariaDB, PostgreSQL) making `log_record.process_execution_id` `NOT NULL` as in the mapping (log records without process execution are deleted).
+* [#97](https://github.com/cleverage/ui-process-bundle/issues/97) Align the mapping and the schema created by the migrations: `ProcessSchedule::$input` mapped as `VARCHAR(255)` as created by the migrations (was `TEXT`); `Version20261005120000` migration (MySQL / MariaDB, PostgreSQL) making `log_record.process_execution_id` `NOT NULL` (log records without process execution are deleted) and `process_execution.context` nullable, as in the mapping.
 * [#99](https://github.com/cleverage/ui-process-bundle/issues/99) Fix the migrations on PostgreSQL (they could not create a working schema): id columns created as identity columns (the sequences were not used: inserts failed with the IDENTITY generation), `process_schedule` created with the PostgreSQL syntax (`AUTO_INCREMENT` failed). PostgreSQL support documented.
 
 v3.0.2

src/Migrations/Version20261005120000.php

@@ -20,14 +20,15 @@
 use Doctrine\Migrations\AbstractMigration;
 
 /**
- * Align log_record.process_execution_id, created as nullable by Version20231006111525, on the entity mapping.
+ * Align on the entity mapping log_record.process_execution_id, created as nullable by Version20231006111525, and
+ * process_execution.context, created as NOT NULL by Version20241007152613.
  */
 final class Version20261005120000 extends AbstractMigration
 {
     #[\Override]
     public function getDescription(): string
     {
-        return 'Make log_record.process_execution_id NOT NULL';
+        return 'Make log_record.process_execution_id NOT NULL, process_execution.context nullable';
     }
 
     public function up(Schema $schema): void
@@ -43,6 +44,9 @@ public function up(Schema $schema): void
         $this->addSql($mySql
             ? 'ALTER TABLE log_record MODIFY process_execution_id INT NOT NULL'
             : 'ALTER TABLE log_record ALTER process_execution_id SET NOT NULL');
+        $this->addSql($mySql
+            ? 'ALTER TABLE process_execution MODIFY context JSON DEFAULT NULL'
+            : 'ALTER TABLE process_execution ALTER context DROP NOT NULL');
     }
 
     #[\Override]
@@ -57,5 +61,8 @@ public function down(Schema $schema): void
         $this->addSql($mySql
             ? 'ALTER TABLE log_record MODIFY process_execution_id INT DEFAULT NULL'
             : 'ALTER TABLE log_record ALTER process_execution_id DROP NOT NULL');
+        $this->addSql($mySql
+            ? 'ALTER TABLE process_execution MODIFY context JSON NOT NULL'
+            : 'ALTER TABLE process_execution ALTER context SET NOT NULL');
     }
 }