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<?php
namespace Bitrix\Main\DB;
class MysqlDbConnection
extends DbConnection
{
/**********************************************************
* SqlHelper
**********************************************************/
/**
* @return SqlHelper
*/
protected function createSqlHelper()
{
return new MysqlSqlHelper($this);
}
/***********************************************************
* Connection and disconnection
***********************************************************/
public function disconnectInternal()
{
if (!$this->isConnected)
return;
mysql_close($this->resource);
}
protected function connectInternal()
{
if ($this->isConnected)
return;
if (($this->dbOptions & self::PERSISTENT) != 0)
$connection = mysql_pconnect($this->dbHost, $this->dbLogin, $this->dbPassword);
else
$connection = mysql_connect($this->dbHost, $this->dbLogin, $this->dbPassword, true);
if (!$connection)
throw new ConnectionException('Mysql connect error', mysql_error());
if (!mysql_select_db($this->dbName, $connection))
throw new ConnectionException('Mysql select db error', mysql_error($connection));
$this->resource = $connection;
$this->isConnected = true;
if ($fn = \Bitrix\Main\Loader::getPersonal("php_interface/after_connect_d7.php"))
include($fn);
}
/*********************************************************
* Query
*********************************************************/
/**
* @param $sql
* @param array|null $arBinds
* @param $offset
* @param $limit
* @param \Bitrix\Main\Diag\SqlTrackerQuery|null $trackerQuery
* @return resource
* @throws SqlException|\Bitrix\Main\ArgumentException
*/
protected function queryInternal($sql, array $arBinds = null, $offset = 0, $limit = 0, \Bitrix\Main\Diag\SqlTrackerQuery $trackerQuery = null)
{
$this->connectInternal();
$offset = intval($offset);
$limit = intval($limit);
if ($offset > 0 && $limit <= 0)
throw new \Bitrix\Main\ArgumentException("Limit should be set if offset is set");
if ($limit > 0)
{
if (preg_match("#\\slimit\\s+\\d#i", $sql))
throw new \Bitrix\Main\ArgumentException("Duplicate limit settings");
$sql .= "\nLIMIT ".intval($offset).", ".intval($limit)."\n";
}
if ($trackerQuery != null)
$trackerQuery->startQuery($sql, $arBinds);
$result = mysql_query($sql, $this->resource);
if ($trackerQuery != null)
$trackerQuery->finishQuery();
$this->lastQueryResult = $result;
if (!$result)
throw new SqlException('Mysql query error', mysql_error($this->resource));
return $result;
}
/**
* @param $result
* @param \Bitrix\Main\Diag\SqlTrackerQuery $trackerQuery
* @return DbResult
*/
protected function createDbResult($result, \Bitrix\Main\Diag\SqlTrackerQuery $trackerQuery = null)
{
return new MysqlDbResult($this, $result, $trackerQuery);
}
public function getIdentity($name = "")
{
$this->connectInternal();
return mysql_insert_id($this->resource);
}
public function getAffectedRowsCount()
{
return mysql_affected_rows($this->getResource());
}
/*********************************************************
* DDL
*********************************************************/
public function isTableExists($tableName)
{
$tableName = preg_replace("/[^A-Za-z0-9%_]+/i", "", $tableName);
$tableName = trim($tableName);
if (strlen($tableName) <= 0)
return false;
$dbResult = $this->query("SHOW TABLES LIKE '".$this->getSqlHelper()->forSql($tableName)."'");
if ($arResult = $dbResult->fetch())
return true;
else
return false;
}
public function isIndexExists($tableName, array $arColumns)
{
return $this->getIndexName($tableName, $arColumns) !== null;
}
public function getIndexName($tableName, array $arColumns, $strict = false)
{
if (!is_array($arColumns) || count($arColumns) <= 0)
return null;
$rs = $this->query("SHOW INDEX FROM `".$this->getSqlHelper()->forSql($tableName)."`");
if (!$rs)
return null;
$arIndexes = array();
while ($ar = $rs->fetch())
$arIndexes[$ar["Key_name"]][$ar["Seq_in_index"] - 1] = $ar["Column_name"];
$strColumns = implode(",", $arColumns);
foreach ($arIndexes as $Key_name => $arKeyColumns)
{
ksort($arKeyColumns);
$strKeyColumns = implode(",", $arKeyColumns);
if ($strict)
{
if ($strKeyColumns === $strColumns)
return $Key_name;
}
else
{
if (substr($strKeyColumns, 0, strlen($strColumns)) === $strColumns)
return $Key_name;
}
}
return null;
}
public function getTableFields($tableName)
{
if (!array_key_exists($tableName, $this->tableColumnsCache))
{
$this->tableColumnsCache[$tableName] = array();
$this->connectInternal();
$rs = mysql_list_fields($this->dbName, $tableName, $this->resource);
if ($rs > 0)
{
$intNumFields = mysql_num_fields($rs);
while (--$intNumFields >= 0)
{
$name = mysql_field_name($rs, $intNumFields);
$type = mysql_field_type($rs, $intNumFields);
$this->tableColumnsCache[$tableName][$name] = array(
"NAME" => $name,
"TYPE" => $type,
);
}
}
}
return $this->tableColumnsCache[$tableName];
}
/*********************************************************
* Transaction
*********************************************************/
public function startTransaction()
{
$this->query("START TRANSACTION");
}
public function commitTransaction()
{
$this->query("COMMIT");
}
public function rollbackTransaction()
{
$this->query("ROLLBACK");
}
/*********************************************************
* Type, version, cache, etc.
*********************************************************/
public function getVersion()
{
if ($this->version == null)
{
$version = $this->queryScalar("SELECT VERSION()");
if ($version != null)
{
$version = trim($version);
preg_match("#[0-9]+\\.[0-9]+\\.[0-9]+#", $version, $ar);
$this->version = $ar[0];
}
}
return array($this->version, null);
}
public function getType()
{
return "mysql";
}
protected function getErrorMessage()
{
return sprintf("[%s] %s", mysql_errno($this->resource), mysql_error($this->resource));
}
}