/**
* Constructor
*
* @param $db DatabaseBase object to perform updates on
* @param $shared bool Whether to perform updates on shared tables
* @param $maintenance Maintenance Maintenance object which created us
*/
protected function __construct(DatabaseBase &$db, $shared, Maintenance $maintenance = null)
{
$this->db = $db;
$this->db->setFlag(DBO_DDLMODE);
// For Oracle's handling of schema files
$this->shared = $shared;
if ($maintenance) {
$this->maintenance = $maintenance;
} else {
$this->maintenance = new FakeMaintenance();
}
$this->initOldGlobals();
$this->loadExtensions();
wfRunHooks('LoadExtensionSchemaUpdates', array($this));
}
/**
* Create database tables from scratch.
*
* @return Status
*/
public function createTables()
{
$status = $this->getConnection();
if (!$status->isOK()) {
return $status;
}
$this->db->selectDB($this->getVar('wgDBname'));
if ($this->db->tableExists('archive', __METHOD__)) {
$status->warning('config-install-tables-exist');
$this->enableLB();
return $status;
}
$this->db->setFlag(DBO_DDLMODE);
// For Oracle's handling of schema files
$this->db->begin(__METHOD__);
$error = $this->db->sourceFile($this->db->getSchemaPath());
if ($error !== true) {
$this->db->reportQueryError($error, 0, '', __METHOD__);
$this->db->rollback(__METHOD__);
$status->fatal('config-install-tables-failed', $error);
} else {
$this->db->commit(__METHOD__);
}
// Resume normal operations
if ($status->isOk()) {
$this->enableLB();
}
return $status;
}
/**
* Apply a SQL source file to the database as part of running an installation step.
*
* @param string $sourceFileMethod
* @param string $stepName
* @param string $archiveTableMustNotExist
* @return Status
*/
private function stepApplySourceFile($sourceFileMethod, $stepName, $archiveTableMustNotExist = false)
{
$status = $this->getConnection();
if (!$status->isOK()) {
return $status;
}
$this->db->selectDB($this->getVar('wgDBname'));
if ($archiveTableMustNotExist && $this->db->tableExists('archive', __METHOD__)) {
$status->warning("config-{$stepName}-tables-exist");
$this->enableLB();
return $status;
}
$this->db->setFlag(DBO_DDLMODE);
// For Oracle's handling of schema files
$this->db->begin(__METHOD__);
$error = $this->db->sourceFile(call_user_func(array($this->db, $sourceFileMethod)));
if ($error !== true) {
$this->db->reportQueryError($error, 0, '', __METHOD__);
$this->db->rollback(__METHOD__);
$status->fatal("config-{$stepName}-tables-failed", $error);
} else {
$this->db->commit(__METHOD__);
}
// Resume normal operations
if ($status->isOk()) {
$this->enableLB();
}
return $status;
}
/**
* Helper function: Add a key to the updatelog table
* Obviously, only use this for updates that occur after the updatelog table was
* created!
* @param string $key Name of key to insert
* @param string $val [optional] value to insert along with the key
*/
public function insertUpdateRow( $key, $val = null ) {
$this->db->clearFlag( DBO_DDLMODE );
$values = array( 'ul_key' => $key );
if ( $val && $this->canUseNewUpdatelog() ) {
$values['ul_value'] = $val;
}
$this->db->insert( 'updatelog', $values, __METHOD__, 'IGNORE' );
$this->db->setFlag( DBO_DDLMODE );
}