Broken table data export

[Jancis]

Exporting data even without any parameters breaks sql dump. It shows the table structure, but when the data should be returned, process stops with no errors.

  KEY `user_field__created` (`created`),
  KEY `user_field__access` (`access`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='The data table for user entities.';
/*!40101 SET character_set_client = @saved_cs_client */;

--
-- Dumping data for table `users_field_data`
--

LOCK TABLES `users_field_data` WRITE;
/*!40000 ALTER TABLE `users_field_data` DISABLE KEYS */;
SET autocommit=0;
 [error]  Database dump failed 
 [error]  Unable to dump database. Rerun with --debug to see any error message. 

And adding a --debug does not reveal anything.

What I found out, it breaks here

$columnTypes = $this->tableColumnTypes()[$tableName];

And it's because ifsnop/mysqldump-php#141 was never accepted and so the new solution using hooks was not implemented. Also, I have a situation where I can't edit project's json file to add patches and just using composer require does not apply patches (137 to be specific).

My proposal is adding a check on $this->gdprExpressions[$tableName] before invoking $this->tableColumnTypes()[$tableName]. See PR here: #27

[ApeHanger]

Hello Jancis,

that doesn't fix the "null pointer". A solution could be a hack using reflection in the constructor to get access to parents private tableColumnTypes field via a getter in the subclass.

regards
ApeHanger