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<?php
/**
* Piwik - Open source web analytics
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
* @category Piwik
* @package Piwik
*/
use Piwik\Config;
/**
* Schema abstraction
*
* Note: no relation to the ZF proposals for Zend_Db_Schema_Manager
*
* @package Piwik
* @subpackage Piwik_Db
*/
class Piwik_Db_Schema
{
/**
* Singleton instance
*
* @var Piwik_Db_Schema
*/
static private $instance = null;
/**
* Type of database schema
*
* @var string
*/
private $schema = null;
/**
* Returns the singleton Piwik_Db_Schema
*
* @return Piwik_Db_Schema
*/
static public function getInstance()
{
if (self::$instance === null) {
self::$instance = new self;
}
return self::$instance;
}
/**
* Get schema class name
*
* @param string $schemaName
* @return string
*/
private static function getSchemaClassName($schemaName)
{
return 'Piwik_Db_Schema_' . str_replace(' ', '_', ucwords(str_replace('_', ' ', strtolower($schemaName))));
}
/**
* Get list of schemas
*
* @param string $adapterName
* @return array
*/
public static function getSchemas($adapterName)
{
static $allSchemaNames = array(
// MySQL storage engines
'MYSQL' => array(
'Myisam',
// 'Innodb',
// 'Infinidb',
),
// Microsoft SQL Server
// 'MSSQL' => array( 'Mssql' ),
// PostgreSQL
// 'PDO_PGSQL' => array( 'Pgsql' ),
// IBM DB2
// 'IBM' => array( 'Ibm' ),
// Oracle
// 'OCI' => array( 'Oci' ),
);
$adapterName = strtoupper($adapterName);
switch ($adapterName) {
case 'PDO_MYSQL':
case 'MYSQLI':
$adapterName = 'MYSQL';
break;
case 'PDO_MSSQL':
case 'SQLSRV':
$adapterName = 'MSSQL';
break;
case 'PDO_IBM':
case 'DB2':
$adapterName = 'IBM';
break;
case 'PDO_OCI':
case 'ORACLE':
$adapterName = 'OCI';
break;
}
$schemaNames = $allSchemaNames[$adapterName];
$schemas = array();
foreach ($schemaNames as $schemaName) {
$className = 'Piwik_Db_Schema_' . $schemaName;
if (call_user_func(array($className, 'isAvailable'))) {
$schemas[] = $schemaName;
}
}
return $schemas;
}
/**
* Load schema
*/
private function loadSchema()
{
$schema = null;
Piwik_PostEvent('Schema.loadSchema', array(&$schema));
if ($schema === null) {
$config = Config::getInstance();
$dbInfos = $config->database;
if (isset($dbInfos['schema'])) {
$schemaName = $dbInfos['schema'];
} else {
$schemaName = 'Myisam';
}
$className = self::getSchemaClassName($schemaName);
$schema = new $className();
}
$this->schema = $schema;
}
/**
* Returns an instance that subclasses Piwik_Db_Schema
*
* @return Piwik_Db_Schema_Interface
*/
private function getSchema()
{
if ($this->schema === null) {
$this->loadSchema();
}
return $this->schema;
}
/**
* Get the SQL to create a specific Piwik table
*
* @param string $tableName name of the table to create
* @return string SQL
*/
public function getTableCreateSql($tableName)
{
return $this->getSchema()->getTableCreateSql($tableName);
}
/**
* Get the SQL to create Piwik tables
*
* @return array array of strings containing SQL
*/
public function getTablesCreateSql()
{
return $this->getSchema()->getTablesCreateSql();
}
/**
* Create database
*
* @param null|string $dbName database name to create
*/
public function createDatabase($dbName = null)
{
$this->getSchema()->createDatabase($dbName);
}
/**
* Drop database
*/
public function dropDatabase()
{
$this->getSchema()->dropDatabase();
}
/**
* Create all tables
*/
public function createTables()
{
$this->getSchema()->createTables();
}
/**
* Creates an entry in the User table for the "anonymous" user.
*/
public function createAnonymousUser()
{
$this->getSchema()->createAnonymousUser();
}
/**
* Truncate all tables
*/
public function truncateAllTables()
{
$this->getSchema()->truncateAllTables();
}
/**
* Drop specific tables
*
* @param array $doNotDelete
*/
public function dropTables($doNotDelete = array())
{
$this->getSchema()->dropTables($doNotDelete);
}
/**
* Names of all the prefixed tables in piwik
* Doesn't use the DB
*
* @return array Table names
*/
public function getTablesNames()
{
return $this->getSchema()->getTablesNames();
}
/**
* Get list of tables installed
*
* @param bool $forceReload Invalidate cache
* @return array installed tables
*/
public function getTablesInstalled($forceReload = true)
{
return $this->getSchema()->getTablesInstalled($forceReload);
}
/**
* Returns true if Piwik tables exist
*
* @return bool True if tables exist; false otherwise
*/
public function hasTables()
{
return $this->getSchema()->hasTables();
}
}
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