/**
* Resolves the canonical column types of the audit table columns.
*/
protected function resolveCanonicalAuditColumns()
{
if (empty($this->config['audit_columns'])) {
$this->auditColumnsMetadata = new TableColumnsMetadata();
} else {
$schema = $this->config['database']['audit_schema'];
$tableName = '_TMP_' . uniqid();
AuditDataLayer::createTemporaryTable($schema, $tableName, $this->config['audit_columns']);
$columns = AuditDataLayer::getTableColumns($schema, $tableName);
AuditDataLayer::dropTemporaryTable($schema, $tableName);
foreach ($this->config['audit_columns'] as $audit_column) {
$key = StaticDataLayer::searchInRowSet('column_name', $audit_column['column_name'], $columns);
if (isset($audit_column['value_type'])) {
$columns[$key]['value_type'] = $audit_column['value_type'];
}
if (isset($audit_column['expression'])) {
$columns[$key]['expression'] = $audit_column['expression'];
}
}
$this->auditColumnsMetadata = new TableColumnsMetadata($columns, 'AuditColumnMetadata');
}
}