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<?php
class DatabaseLoader
{
private $db;
static $instances = array();
public function __construct($db)
{
$this->db = $db;
if (!isset(static::$instances[$db->protocol]))
static::$instances[$db->protocol] = 0;
if (static::$instances[$db->protocol]++ == 0)
{
// drop and re-create the tables one time only
$this->drop_tables();
$this->exec_sql_script($db->protocol);
}
}
public function reset_table_data()
{
foreach ($this->get_fixture_tables() as $table)
{
if ($this->db->protocol == 'oci' && $table == 'rm-bldg')
continue;
$this->db->query('DELETE FROM ' . $this->quote_name($table));
$this->load_fixture_data($table);
}
$after_fixtures = $this->db->protocol.'-after-fixtures';
try {
$this->exec_sql_script($after_fixtures);
} catch (Exception $e) {
// pass
}
}
public function drop_tables()
{
$tables = $this->db->tables();
foreach ($this->get_fixture_tables() as $table)
{
if ($this->db->protocol == 'oci')
{
$table = strtoupper($table);
if ($table == 'RM-BLDG')
continue;
}
if (in_array($table,$tables))
$this->db->query('DROP TABLE ' . $this->quote_name($table));
if ($this->db->protocol == 'oci')
{
try {
$this->db->query("DROP SEQUENCE {$table}_seq");
} catch (ActiveRecord\DatabaseException $e) {
// ignore
}
}
}
}
public function exec_sql_script($file)
{
foreach (explode(';',$this->get_sql($file)) as $sql)
{
if (trim($sql) != '')
$this->db->query($sql);
}
}
public function get_fixture_tables()
{
$tables = array();
foreach (glob(__DIR__ . '/../fixtures/*.csv') as $file)
{
$info = pathinfo($file);
$tables[] = $info['filename'];
}
return $tables;
}
public function get_sql($file)
{
$file = __DIR__ . "/../sql/$file.sql";
if (!file_exists($file))
throw new Exception("File not found: $file");
return file_get_contents($file);
}
public function load_fixture_data($table)
{
$fp = fopen(__DIR__ . "/../fixtures/$table.csv",'r');
$fields = fgetcsv($fp);
if (!empty($fields))
{
$markers = join(',',array_fill(0,count($fields),'?'));
$table = $this->quote_name($table);
foreach ($fields as &$name)
$name = $this->quote_name(trim($name));
$fields = join(',',$fields);
while (($values = fgetcsv($fp)))
$this->db->query("INSERT INTO $table($fields) VALUES($markers)",$values);
}
fclose($fp);
}
public function quote_name($name)
{
if ($this->db->protocol == 'oci')
$name = strtoupper($name);
return $this->db->quote_name($name);
}
}
?>
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