[SCHEMA] Improve timestamp storage
Avoid the use of deprecated MariaDB "zero dates" globally. If they're present as attribute defaults somewhere, they will be replaced with NULL implicitly. The existing "zero dates" in MariaDB storage will be left intact and this should not present any issues. The "timestamp" type in table definitions now corresponds to DATETIME in MariaDB with "DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP", which should be close enough to the original behaviour for compatibility purposes. It is now the recommended type for "modified" attributes, because of the update trigger on MariaDB. But there is no such trigger implemented on PostgreSQL as of this moment.
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@@ -34,8 +34,8 @@ class Conversation extends Managed_DataObject
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public $id; // int(4) primary_key not_null auto_increment
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public $uri; // varchar(191) unique_key not 255 because utf8mb4 takes more space
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public $url; // varchar(191) unique_key not 255 because utf8mb4 takes more space
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public $created; // datetime() not_null default_0000-00-00%2000%3A00%3A00
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public $modified; // datetime() not_null default_CURRENT_TIMESTAMP
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public $created; // datetime()
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public $modified; // timestamp() not_null default_CURRENT_TIMESTAMP
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public static function schemaDef()
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{
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@@ -44,8 +44,8 @@ class Conversation extends Managed_DataObject
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'id' => array('type' => 'serial', 'not null' => true, 'description' => 'Unique identifier, (again) unrelated to notice id since 2016-01-06'),
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'uri' => array('type' => 'varchar', 'not null'=>true, 'length' => 191, 'description' => 'URI of the conversation'),
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'url' => array('type' => 'varchar', 'length' => 191, 'description' => 'Resolvable URL, preferrably remote (local can be generated on the fly)'),
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'created' => array('type' => 'datetime', 'not null' => true, 'default' => '0000-00-00 00:00:00', 'description' => 'date this record was created'),
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'modified' => array('type' => 'datetime', 'not null' => true, 'default' => 'CURRENT_TIMESTAMP', 'description' => 'date this record was modified'),
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'created' => array('type' => 'datetime', 'description' => 'date this record was created'),
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'modified' => array('type' => 'timestamp', 'not null' => true, 'description' => 'date this record was modified'),
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),
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'primary key' => array('id'),
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'unique keys' => array(
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