/**
* Construct migration definition.
*
* @param MigratableDatabase $db The database to migrate.
*/
public function __construct(MigratableDatabase $db)
{
$this->db = $db;
$this->targetDefinition = $db->getDefinition();
$db->refreshDefinition();
$current = $db->getDefinition();
foreach ($current->getTables() as $table) {
$this->tables[] = $table;
$this->definitions[$table] = $current->getDefinition($table);
}
$db->setDefinition($this);
}
/**
* Alter a key.
*
* @param string $table
* Table name.
* @param string $key
* Key name.
* @param string[] $columns
* Columns.
* @param bool $unique
* Uniqueness.
*/
protected function alterKey($table, $key, array $columns, $unique = true)
{
try {
$this->db->alterKey($table, $key, $columns, $unique);
$this->definition->alterKey($table, $key, $columns, $unique);
} catch (\Exception $e) {
if (!$this->ignoreExceptions) {
throw $e;
}
}
}
