<?php
/**
* PHP version of mysqldump cli that comes with MySQL.
*
* Tags: mysql mysqldump pdo php7 php5 database php sql hhvm mariadb mysql-backup.
*
* @category Library
* @package Ifsnop\Mysqldump
* @author Diego Torres <ifsnop@github.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU General Public License
* @link https://github.com/ifsnop/mysqldump-php
*
*/
namespace com;
use Exception;
use PDO;
use PDOException;
/**
* Class Mysqldump.
*
* @category Library
* @author Diego Torres <ifsnop@github.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU General Public License
* @link https://github.com/ifsnop/mysqldump-php
*
*/
class Mysqldump
{
// Same as mysqldump.
const MAXLINESIZE = 1000000;
// List of available compression methods as constants.
const GZIP = 'Gzip';
const BZIP2 = 'Bzip2';
const NONE = 'None';
const GZIPSTREAM = 'Gzipstream';
// List of available connection strings.
const UTF8 = 'utf8';
const UTF8MB4 = 'utf8mb4';
/**
* Database username.
* @var string
*/
public $user;
/**
* Database password.
* @var string
*/
public $pass;
/**
* Connection string for PDO.
* @var string
*/
public $dsn;
/**
* Destination filename, defaults to stdout.
* @var string
*/
public $fileName = 'php://stdout';
// Internal stuff.
private $tables = array();
private $views = array();
private $triggers = array();
private $procedures = array();
private $functions = array();
private $events = array();
private $dbHandler = null;
private $dbType = "";
private $compressManager;
private $typeAdapter;
private $dumpSettings = array();
private $pdoSettings = array();
private $version;
private $tableColumnTypes = array();
private $transformColumnValueCallable;
/**
* Database name, parsed from dsn.
* @var string
*/
private $dbName;
/**
* Host name, parsed from dsn.
* @var string
*/
private $host;
/**
* Dsn string parsed as an array.
* @var array
*/
private $dsnArray = array();
/**
* Keyed on table name, with the value as the conditions.
* e.g. - 'users' => 'date_registered > NOW() - INTERVAL 6 MONTH'
*
* @var array
*/
private $tableWheres = array();
private $tableLimits = array();
/**
* Constructor of Mysqldump. Note that in the case of an SQLite database
* connection, the filename must be in the $db parameter.
*
* @param string $dsn PDO DSN connection string
* @param string $user SQL account username
* @param string $pass SQL account password
* @param array $dumpSettings SQL database settings
* @param array $pdoSettings PDO configured attributes
*/
public function __construct(
$dsn = '',
$user = '',
$pass = '',
$dumpSettings = array(),
$pdoSettings = array()
) {
$dumpSettingsDefault = array(
'include-tables' => array(),
'exclude-tables' => array(),
'compress' => Mysqldump::NONE,
'init_commands' => array(),
'no-data' => array(),
'reset-auto-increment' => false,
'add-drop-database' => false,
'add-drop-table' => false,
'add-drop-trigger' => true,
'add-locks' => true,
'complete-insert' => false,
'databases' => false,
'default-character-set' => Mysqldump::UTF8,
'disable-keys' => true,
'extended-insert' => true,
'events' => false,
'hex-blob' => true, /* faster than escaped content */
'insert-ignore' => false,
'net_buffer_length' => self::MAXLINESIZE,
'no-autocommit' => true,
'no-create-info' => false,
'lock-tables' => true,
'routines' => false,
'single-transaction' => true,
'skip-triggers' => false,
'skip-tz-utc' => false,
'skip-comments' => false,
'skip-dump-date' => false,
'skip-definer' => false,
'where' => '',
/* deprecated */
'disable-foreign-keys-check' => true
);
$pdoSettingsDefault = array(
PDO::ATTR_PERSISTENT => true,
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
);
$this->user = $user;
$this->pass = $pass;
$this->parseDsn($dsn);
// This drops MYSQL dependency, only use the constant if it's defined.
if ("mysql" === $this->dbType) {
$pdoSettingsDefault[PDO::MYSQL_ATTR_USE_BUFFERED_QUERY] = false;
}
$this->pdoSettings = self::array_replace_recursive($pdoSettingsDefault, $pdoSettings);
$this->dumpSettings = self::array_replace_recursive($dumpSettingsDefault, $dumpSettings);
$this->dumpSettings['init_commands'][] = "SET NAMES ".$this->dumpSettings['default-character-set'];
if (false === $this->dumpSettings['skip-tz-utc']) {
$this->dumpSettings['init_commands'][] = "SET TIME_ZONE='+00:00'";
}
$diff = array_diff(array_keys($this->dumpSettings), array_keys($dumpSettingsDefault));
if (count($diff) > 0) {
throw new Exception("Unexpected value in dumpSettings: (".implode(",", $diff).")");
}
if (!is_array($this->dumpSettings['include-tables']) ||
!is_array($this->dumpSettings['exclude-tables'])) {
throw new Exception("Include-tables and exclude-tables should be arrays");
}
// Dump the same views as tables, mimic mysqldump behaviour
$this->dumpSettings['include-views'] = $this->dumpSettings['include-tables'];
// Create a new compressManager to manage compressed output
$this->compressManager = CompressManagerFactory::create($this->dumpSettings['compress']);
}
/**
* Destructor of Mysqldump. Unsets dbHandlers and database objects.
*/
public function __destruct()
{
$this->dbHandler = null;
}
/**
* Custom array_replace_recursive to be used if PHP < 5.3
* Replaces elements from passed arrays into the first array recursively.
*
* @param array $array1 The array in which elements are replaced
* @param array $array2 The array from which elements will be extracted
*
* @return array Returns an array, or NULL if an error occurs.
*/
public static function array_replace_recursive($array1, $array2)
{
if (function_exists('array_replace_recursive')) {
return array_replace_recursive($array1, $array2);
}
foreach ($array2 as $key => $value) {
if (is_array($value)) {
$array1[$key] = self::array_replace_recursive($array1[$key], $value);
} else {
$array1[$key] = $value;
}
}
return $array1;
}
/**
* Keyed by table name, with the value as the conditions:
* e.g. 'users' => 'date_registered > NOW() - INTERVAL 6 MONTH AND deleted=0'
*
* @param array $tableWheres
*/
public function setTableWheres(array $tableWheres)
{
$this->tableWheres = $tableWheres;
}
/**
* @param $tableName
*
* @return boolean|mixed
*/
public function getTableWhere($tableName)
{
if (!empty($this->tableWheres[$tableName])) {
return $this->tableWheres[$tableName];
} elseif ($this->dumpSettings['where']) {
return $this->dumpSettings['where'];
}
return false;
}
/**
* Keyed by table name, with the value as the numeric limit:
* e.g. 'users' => 3000
*
* @param array $tableLimits
*/
public function setTableLimits(array $tableLimits)
{
$this->tableLimits = $tableLimits;
}
/**
* Returns the LIMIT for the table. Must be numeric to be returned.
* @param $tableName
* @return boolean
*/
public function getTableLimit($tableName)
{
if (empty($this->tableLimits[$tableName])) {
return false;
}
$limit = $this->tableLimits[$tableName];
if (!is_numeric($limit)) {
return false;
}
return $limit;
}
/**
* Parse DSN string and extract dbname value
* Several examples of a DSN string
* mysql:host=localhost;dbname=testdb
* mysql:host=localhost;port=3307;dbname=testdb
* mysql:unix_socket=/tmp/mysql.sock;dbname=testdb
*
* @param string $dsn dsn string to parse
* @return boolean
*/
private function parseDsn($dsn)
{
if (empty($dsn) || (false === ($pos = strpos($dsn, ":")))) {
throw new Exception("Empty DSN string");
}
$this->dsn = $dsn;
$this->dbType = strtolower(substr($dsn, 0, $pos)); // always returns a string
if (empty($this->dbType)) {
throw new Exception("Missing database type from DSN string");
}
$dsn = substr($dsn, $pos + 1);
foreach (explode(";", $dsn) as $kvp) {
$kvpArr = explode("=", $kvp);
$this->dsnArray[strtolower($kvpArr[0])] = $kvpArr[1];
}
if (empty($this->dsnArray['host']) &&
empty($this->dsnArray['unix_socket'])) {
throw new Exception("Missing host from DSN string");
}
$this->host = (!empty($this->dsnArray['host'])) ?
$this->dsnArray['host'] : $this->dsnArray['unix_socket'];
if (empty($this->dsnArray['dbname'])) {
throw new Exception("Missing database name from DSN string");
}
$this->dbName = $this->dsnArray['dbname'];
return true;
}
/**
* Connect with PDO.
*
* @return null
*/
private function connect()
{
// Connecting with PDO.
try {
switch ($this->dbType) {
case 'sqlite':
$this->dbHandler = @new PDO("sqlite:".$this->dbName, null, null, $this->pdoSettings);
break;
case 'mysql':
case 'pgsql':
case 'dblib':
$this->dbHandler = @new PDO(
$this->dsn,
$this->user,
$this->pass,
$this->pdoSettings
);
// Execute init commands once connected
foreach ($this->dumpSettings['init_commands'] as $stmt) {
$this->dbHandler->exec($stmt);
}
// Store server version
$this->version = $this->dbHandler->getAttribute(PDO::ATTR_SERVER_VERSION);
break;
default:
throw new Exception("Unsupported database type (".$this->dbType.")");
}
} catch (PDOException $e) {
throw new Exception(
"Connection to ".$this->dbType." failed with message: ".
$e->getMessage()
);
}
if (is_null($this->dbHandler)) {
throw new Exception("Connection to ".$this->dbType."failed");
}
$this->dbHandler->setAttribute(PDO::ATTR_ORACLE_NULLS, PDO::NULL_NATURAL);
$this->typeAdapter = TypeAdapterFactory::create($this->dbType, $this->dbHandler, $this->dumpSettings);
}
/**
* Primary function, triggers dumping.
*
* @param string $filename Name of file to write sql dump to
* @return null
* @throws \Exception
*/
public function start($filename = '')
{
// Output file can be redefined here
if (!empty($filename)) {
$this->fileName = $filename;
}
// Connect to database
$this->connect();
// Create output file
$this->compressManager->open($this->fileName);
// Write some basic info to output file
$this->compressManager->write($this->getDumpFileHeader());
// Store server settings and use sanner defaults to dump
$this->compressManager->write(
$this->typeAdapter->backup_parameters()
);
if ($this->dumpSettings['databases']) {
$this->compressManager->write(
$this->typeAdapter->getDatabaseHeader($this->dbName)
);
if ($this->dumpSettings['add-drop-database']) {
$this->compressManager->write(
$this->typeAdapter->add_drop_database($this->dbName)
);
}
}
// Get table, view, trigger, procedures, functions and events structures from
// database.
$this->getDatabaseStructureTables();
$this->getDatabaseStructureViews();
$this->getDatabaseStructureTriggers();
$this->getDatabaseStructureProcedures();
$this->getDatabaseStructureFunctions();
$this->getDatabaseStructureEvents();
if ($this->dumpSettings['databases']) {
$this->compressManager->write(
$this->typeAdapter->databases($this->dbName)
);
}
// If there still are some tables/views in include-tables array,
// that means that some tables or views weren't found.
// Give proper error and exit.
// This check will be removed once include-tables supports regexps.
if (0 < count($this->dumpSettings['include-tables'])) {
$name = implode(",", $this->dumpSettings['include-tables']);
throw new Exception("Table (".$name.") not found in database");
}
$this->exportTables();
$this->exportTriggers();
$this->exportFunctions();
$this->exportProcedures();
$this->exportViews();
$this->exportEvents();
// Restore saved parameters.
$this->compressManager->write(
$this->typeAdapter->restore_parameters()
);
// Write some stats to output file.
$this->compressManager->write($this->getDumpFileFooter());
// Close output file.
$this->compressManager->close();
return;
}
/**
* Returns header for dump file.
*
* @return string
*/
private function getDumpFileHeader()
{
$header = '';
if (!$this->dumpSettings['skip-comments']) {
// Some info about software, source and time
$header = "-- mysqldump-php https://github.com/ifsnop/mysqldump-php".PHP_EOL.
"--".PHP_EOL.
"-- Host: {$this->host}\tDatabase: {$this->dbName}".PHP_EOL.
"-- ------------------------------------------------------".PHP_EOL;
if (!empty($this->version)) {
$header .= "-- Server version \t".$this->version.PHP_EOL;
}
if (!$this->dumpSettings['skip-dump-date']) {
$header .= "-- Date: ".date('r').PHP_EOL.PHP_EOL;
}
}
return $header;
}
/**
* Returns footer for dump file.
*
* @return string
*/
private function getDumpFileFooter()
{
$footer = '';
if (!$this->dumpSettings['skip-comments']) {
$footer .= '-- Dump completed';
if (!$this->dumpSettings['skip-dump-date']) {
$footer .= ' on: '.date('r');
}
$footer .= PHP_EOL;
}
return $footer;
}
/**
* Reads table names from database.
* Fills $this->tables array so they will be dumped later.
*
* @return null
*/
private function getDatabaseStructureTables()
{
// Listing all tables from database
if (empty($this->dumpSettings['include-tables'])) {
// include all tables for now, blacklisting happens later
foreach ($this->dbHandler->query($this->typeAdapter->show_tables($this->dbName)) as $row) {
array_push($this->tables, current($row));
}
} else {
// include only the tables mentioned in include-tables
foreach ($this->dbHandler->query($this->typeAdapter->show_tables($this->dbName)) as $row) {
if (in_array(current($row), $this->dumpSettings['include-tables'], true)) {
array_push($this->tables, current($row));
$elem = array_search(
current($row),
$this->dumpSettings['include-tables']
);
unset($this->dumpSettings['include-tables'][$elem]);
}
}
}
return;
}
/**
* Reads view names from database.
* Fills $this->tables array so they will be dumped later.
*
* @return null
*/
private function getDatabaseStructureViews()
{
// Listing all views from database
if (empty($this->dumpSettings['include-views'])) {
// include all views for now, blacklisting happens later
foreach ($this->dbHandler->query($this->typeAdapter->show_views($this->dbName)) as $row) {
array_push($this->views, current($row));
}
} else {
// include only the tables mentioned in include-tables
foreach ($this->dbHandler->query($this->typeAdapter->show_views($this->dbName)) as $row) {
if (in_array(current($row), $this->dumpSettings['include-views'], true)) {
array_push($this->views, current($row));
$elem = array_search(
current($row),
$this->dumpSettings['include-views']
);
unset($this->dumpSettings['include-views'][$elem]);
}
}
}
return;
}
/**
* Reads trigger names from database.
* Fills $this->tables array so they will be dumped later.
*
* @return null
*/
private function getDatabaseStructureTriggers()
{
// Listing all triggers from database
if (false === $this->dumpSettings['skip-triggers']) {
foreach ($this->dbHandler->query($this->typeAdapter->show_triggers($this->dbName)) as $row) {
array_push($this->triggers, $row['Trigger']);
}
}
return;
}
/**
* Reads procedure names from database.
* Fills $this->tables array so they will be dumped later.
*
* @return null
*/
private function getDatabaseStructureProcedures()
{
// Listing all procedures from database
if ($this->dumpSettings['routines']) {
foreach ($this->dbHandler->query($this->typeAdapter->show_procedures($this->dbName)) as $row) {
array_push($this->procedures, $row['procedure_name']);
}
}
return;
}
/**
* Reads functions names from database.
* Fills $this->tables array so they will be dumped later.
*
* @return null
*/
private function getDatabaseStructureFunctions()
{
// Listing all functions from database
if ($this->dumpSettings['routines']) {
foreach ($this->dbHandler->query($this->typeAdapter->show_functions($this->dbName)) as $row) {
array_push($this->functions, $row['function_name']);
}
}
return;
}
/**
* Reads event names from database.
* Fills $this->tables array so they will be dumped later.
*
* @return null
*/
private function getDatabaseStructureEvents()
{
// Listing all events from database
if ($this->dumpSettings['events']) {
foreach ($this->dbHandler->query($this->typeAdapter->show_events($this->dbName)) as $row) {
array_push($this->events, $row['event_name']);
}
}
return;
}
/**
* Compare if $table name matches with a definition inside $arr
* @param $table string
* @param $arr array with strings or patterns
* @return boolean
*/
private function matches($table, $arr)
{
$match = false;
foreach ($arr as $pattern) {
if ('/' != $pattern[0]) {
continue;
}
if (1 == preg_match($pattern, $table)) {
$match = true;
}
}
return in_array($table, $arr) || $match;
}
/**
* Exports all the tables selected from database
*
* @return null
*/
private function exportTables()
{
// Exporting tables one by one
foreach ($this->tables as $table) {
if ($this->matches($table, $this->dumpSettings['exclude-tables'])) {
continue;
}
$this->getTableStructure($table);
if (false === $this->dumpSettings['no-data']) { // don't break compatibility with old trigger
$this->listValues($table);
} elseif (true === $this->dumpSettings['no-data']
|| $this->matches($table, $this->dumpSettings['no-data'])) {
continue;
} else {
$this->listValues($table);
}
}
}
/**
* Exports all the views found in database
*
* @return null
*/
private function exportViews()
{
if (false === $this->dumpSettings['no-create-info']) {
// Exporting views one by one
foreach ($this->views as $view) {
if ($this->matches($view, $this->dumpSettings['exclude-tables'])) {
continue;
}
$this->tableColumnTypes[$view] = $this->getTableColumnTypes($view);
$this->getViewStructureTable($view);
}
foreach ($this->views as $view) {
if ($this->matches($view, $this->dumpSettings['exclude-tables'])) {
continue;
}
$this->getViewStructureView($view);
}
}
}
/**
* Exports all the triggers found in database
*
* @return null
*/
private function exportTriggers()
{
// Exporting triggers one by one
foreach ($this->triggers as $trigger) {
$this->getTriggerStructure($trigger);
}
}
/**
* Exports all the procedures found in database
*
* @return null
*/
private function exportProcedures()
{
// Exporting triggers one by one
foreach ($this->procedures as $procedure) {
$this->getProcedureStructure($procedure);
}
}
/**
* Exports all the functions found in database
*
* @return null
*/
private function exportFunctions()
{
// Exporting triggers one by one
foreach ($this->functions as $function) {
$this->getFunctionStructure($function);
}
}
/**
* Exports all the events found in database
*
* @return null
*/
private function exportEvents()
{
// Exporting triggers one by one
foreach ($this->events as $event) {
$this->getEventStructure($event);
}
}
/**
* Table structure extractor
*
* @todo move specific mysql code to typeAdapter
* @param string $tableName Name of table to export
* @return null
*/
private function getTableStructure($tableName)
{
if (!$this->dumpSettings['no-create-info']) {
$ret = '';
if (!$this->dumpSettings['skip-comments']) {
$ret = "--".PHP_EOL.
"-- Table structure for table `$tableName`".PHP_EOL.
"--".PHP_EOL.PHP_EOL;
}
$stmt = $this->typeAdapter->show_create_table($tableName);
foreach ($this->dbHandler->query($stmt) as $r) {
$this->compressManager->write($ret);
if ($this->dumpSettings['add-drop-table']) {
$this->compressManager->write(
$this->typeAdapter->drop_table($tableName)
);
}
$this->compressManager->write(
$this->typeAdapter->create_table($r)
);
break;
}
}
$this->tableColumnTypes[$tableName] = $this->getTableColumnTypes($tableName);
return;
}
/**
* Store column types to create data dumps and for Stand-In tables
*
* @param string $tableName Name of table to export
* @return array type column types detailed
*/
private function getTableColumnTypes($tableName)
{
$columnTypes = array();
$columns = $this->dbHandler->query(
$this->typeAdapter->show_columns($tableName)
);
$columns->setFetchMode(PDO::FETCH_ASSOC);
foreach ($columns as $key => $col) {
$types = $this->typeAdapter->parseColumnType($col);
$columnTypes[$col['Field']] = array(
'is_numeric'=> $types['is_numeric'],
'is_blob' => $types['is_blob'],
'type' => $types['type'],
'type_sql' => $col['Type'],
'is_virtual' => $types['is_virtual']
);
}
return $columnTypes;
}
/**
* View structure extractor, create table (avoids cyclic references)
*
* @todo move mysql specific code to typeAdapter
* @param string $viewName Name of view to export
* @return null
*/
private function getViewStructureTable($viewName)
{
if (!$this->dumpSettings['skip-comments']) {
$ret = "--".PHP_EOL.
"-- Stand-In structure for view `${viewName}`".PHP_EOL.
"--".PHP_EOL.PHP_EOL;
$this->compressManager->write($ret);
}
$stmt = $this->typeAdapter->show_create_view($viewName);
// create views as tables, to resolve dependencies
foreach ($this->dbHandler->query($stmt) as $r) {
if ($this->dumpSettings['add-drop-table']) {
$this->compressManager->write(
$this->typeAdapter->drop_view($viewName)
);
}
$this->compressManager->write(
$this->createStandInTable($viewName)
);
break;
}
}
/**
* Write a create table statement for the table Stand-In, show create
* table would return a create algorithm when used on a view
*
* @param string $viewName Name of view to export
* @return string create statement
*/
public function createStandInTable($viewName)
{
$ret = array();
foreach ($this->tableColumnTypes[$viewName] as $k => $v) {
$ret[] = "`${k}` ${v['type_sql']}";
}
$ret = implode(PHP_EOL.",", $ret);
$ret = "CREATE TABLE IF NOT EXISTS `$viewName` (".
PHP_EOL.$ret.PHP_EOL.");".PHP_EOL;
return $ret;
}
/**
* View structure extractor, create view
*
* @todo move mysql specific code to typeAdapter
* @param string $viewName Name of view to export
* @return null
*/
private function getViewStructureView($viewName)
{
if (!$this->dumpSettings['skip-comments']) {
$ret = "--".PHP_EOL.
"-- View structure for view `${viewName}`".PHP_EOL.
"--".PHP_EOL.PHP_EOL;
$this->compressManager->write($ret);
}
$stmt = $this->typeAdapter->show_create_view($viewName);
// create views, to resolve dependencies
// replacing tables with views
foreach ($this->dbHandler->query($stmt) as $r) {
// because we must replace table with view, we should delete it
$this->compressManager->write(
$this->typeAdapter->drop_view($viewName)
);
$this->compressManager->write(
$this->typeAdapter->create_view($r)
);
break;
}
}
/**
* Trigger structure extractor
*
* @param string $triggerName Name of trigger to export
* @return null
*/
private function getTriggerStructure($triggerName)
{
$stmt = $this->typeAdapter->show_create_trigger($triggerName);
foreach ($this->dbHandler->query($stmt) as $r) {
if ($this->dumpSettings['add-drop-trigger']) {
$this->compressManager->write(
$this->typeAdapter->add_drop_trigger($triggerName)
);
}
$this->compressManager->write(
$this->typeAdapter->create_trigger($r)
);
return;
}
}
/**
* Procedure structure extractor
*
* @param string $procedureName Name of procedure to export
* @return null
*/
private function getProcedureStructure($procedureName)
{
if (!$this->dumpSettings['skip-comments']) {
$ret = "--".PHP_EOL.
"-- Dumping routines for database '".$this->dbName."'".PHP_EOL.
"--".PHP_EOL.PHP_EOL;
$this->compressManager->write($ret);
}
$stmt = $this->typeAdapter->show_create_procedure($procedureName);
foreach ($this->dbHandler->query($stmt) as $r) {
$this->compressManager->write(
$this->typeAdapter->create_procedure($r)
);
return;
}
}
/**
* Function structure extractor
*
* @param string $functionName Name of function to export
* @return null
*/
private function getFunctionStructure($functionName)
{
if (!$this->dumpSettings['skip-comments']) {
$ret = "--".PHP_EOL.
"-- Dumping routines for database '".$this->dbName."'".PHP_EOL.
"--".PHP_EOL.PHP_EOL;
$this->compressManager->write($ret);
}
$stmt = $this->typeAdapter->show_create_function($functionName);
foreach ($this->dbHandler->query($stmt) as $r) {
$this->compressManager->write(
$this->typeAdapter->create_function($r)
);
return;
}
}
/**
* Event structure extractor
*
* @param string $eventName Name of event to export
* @return null
*/
private function getEventStructure($eventName)
{
if (!$this->dumpSettings['skip-comments']) {
$ret = "--".PHP_EOL.
"-- Dumping events for database '".$this->dbName."'".PHP_EOL.
"--".PHP_EOL.PHP_EOL;
$this->compressManager->write($ret);
}
$stmt = $this->typeAdapter->show_create_event($eventName);
foreach ($this->dbHandler->query($stmt) as $r) {
$this->compressManager->write(
$this->typeAdapter->create_event($r)
);
return;
}
}
/**
* Prepare values for output
*
* @param string $tableName Name of table which contains rows
* @param array $row Associative array of column names and values to be
* quoted
*
* @return array
*/
private function prepareColumnValues($tableName, $row)
{
$ret = array();
$columnTypes = $this->tableColumnTypes[$tableName];
foreach ($row as $colName => $colValue) {
$colValue = $this->hookTransformColumnValue($tableName, $colName, $colValue, $row);
$ret[] = $this->escape($colValue, $columnTypes[$colName]);
}
return $ret;
}
/**
* Escape values with quotes when needed
*
* @param string $tableName Name of table which contains rows
* @param array $row Associative array of column names and values to be quoted
*
* @return string
*/
private function escape($colValue, $colType)
{
if (is_null($colValue)) {
return "NULL";
} elseif ($this->dumpSettings['hex-blob'] && $colType['is_blob']) {
if ($colType['type'] == 'bit' || !empty($colValue)) {
return "0x${colValue}";
} else {
return "''";
}
} elseif ($colType['is_numeric']) {
return $colValue;
}
return $this->dbHandler->quote($colValue);
}
/**
* Set a callable that will will be used to transform column values.
*
* @param callable $callable
*
* @return void
*/
public function setTransformColumnValueHook($callable)
{
$this->transformColumnValueCallable = $callable;
}
/**
* Give extending classes an opportunity to transform column values
*
* @param string $tableName Name of table which contains rows
* @param string $colName Name of the column in question
* @param string $colValue Value of the column in question
*
* @return string
*/
protected function hookTransformColumnValue($tableName, $colName, $colValue, $row)
{
if (!$this->transformColumnValueCallable) {
return $colValue;
}
return call_user_func_array($this->transformColumnValueCallable, array(
$tableName,
$colName,
$colValue,
$row
));
}
/**
* Table rows extractor
*
* @param string $tableName Name of table to export
*
* @return null
*/
private function listValues($tableName)
{
$this->prepareListValues($tableName);
$onlyOnce = true;
$lineSize = 0;
// colStmt is used to form a query to obtain row values
$colStmt = $this->getColumnStmt($tableName);
// colNames is used to get the name of the columns when using complete-insert
if ($this->dumpSettings['complete-insert']) {
$colNames = $this->getColumnNames($tableName);
}
$stmt = "SELECT ".implode(",", $colStmt)." FROM `$tableName`";
// Table specific conditions override the default 'where'
$condition = $this->getTableWhere($tableName);
if ($condition) {
$stmt .= " WHERE {$condition}";
}
$limit = $this->getTableLimit($tableName);
if ($limit) {
$stmt .= " LIMIT {$limit}";
}
$resultSet = $this->dbHandler->query($stmt);
$resultSet->setFetchMode(PDO::FETCH_ASSOC);
$ignore = $this->dumpSettings['insert-ignore'] ? ' IGNORE' : '';
$count = 0;
foreach ($resultSet as $row) {
$count++;
$vals = $this->prepareColumnValues($tableName, $row);
if ($onlyOnce || !$this->dumpSettings['extended-insert']) {
if ($this->dumpSettings['complete-insert']) {
$lineSize += $this->compressManager->write(
"INSERT$ignore INTO `$tableName` (".
implode(", ", $colNames).
") VALUES (".implode(",", $vals).")"
);
} else {
$lineSize += $this->compressManager->write(
"INSERT$ignore INTO `$tableName` VALUES (".implode(",", $vals).")"
);
}
$onlyOnce = false;
} else {
$lineSize += $this->compressManager->write(",(".implode(",", $vals).")");
}
if (($lineSize > $this->dumpSettings['net_buffer_length']) ||
!$this->dumpSettings['extended-insert']) {
$onlyOnce = true;
$lineSize = $this->compressManager->write(";".PHP_EOL);
}
}
$resultSet->closeCursor();
if (!$onlyOnce) {
$this->compressManager->write(";".PHP_EOL);
}
$this->endListValues($tableName, $count);
}
/**
* Table rows extractor, append information prior to dump
*
* @param string $tableName Name of table to export
*
* @return null
*/
public function prepareListValues($tableName)
{
if (!$this->dumpSettings['skip-comments']) {
$this->compressManager->write(
"--".PHP_EOL.
"-- Dumping data for table `$tableName`".PHP_EOL.
"--".PHP_EOL.PHP_EOL
);
}
if ($this->dumpSettings['single-transaction']) {
$this->dbHandler->exec($this->typeAdapter->setup_transaction());
$this->dbHandler->exec($this->typeAdapter->start_transaction());
}
if ($this->dumpSettings['lock-tables'] && !$this->dumpSettings['single-transaction']) {
$this->typeAdapter->lock_table($tableName);
}
if ($this->dumpSettings['add-locks']) {
$this->compressManager->write(
$this->typeAdapter->start_add_lock_table($tableName)
);
}
if ($this->dumpSettings['disable-keys']) {
$this->compressManager->write(
$this->typeAdapter->start_add_disable_keys($tableName)
);
}
// Disable autocommit for faster reload
if ($this->dumpSettings['no-autocommit']) {
$this->compressManager->write(
$this->typeAdapter->start_disable_autocommit()
);
}
return;
}
/**
* Table rows extractor, close locks and commits after dump
*
* @param string $tableName Name of table to export.
* @param integer $count Number of rows inserted.
*
* @return void
*/
public function endListValues($tableName, $count = 0)
{
if ($this->dumpSettings['disable-keys']) {
$this->compressManager->write(
$this->typeAdapter->end_add_disable_keys($tableName)
);
}
if ($this->dumpSettings['add-locks']) {
$this->compressManager->write(
$this->typeAdapter->end_add_lock_table($tableName)
);
}
if ($this->dumpSettings['single-transaction']) {
$this->dbHandler->exec($this->typeAdapter->commit_transaction());
}
if ($this->dumpSettings['lock-tables'] && !$this->dumpSettings['single-transaction']) {
$this->typeAdapter->unlock_table($tableName);
}
// Commit to enable autocommit
if ($this->dumpSettings['no-autocommit']) {
$this->compressManager->write(
$this->typeAdapter->end_disable_autocommit()
);
}
$this->compressManager->write(PHP_EOL);
if (!$this->dumpSettings['skip-comments']) {
$this->compressManager->write(
"-- Dumped table `".$tableName."` with $count row(s)".PHP_EOL.
'--'.PHP_EOL.PHP_EOL
);
}
return;
}
/**
* Build SQL List of all columns on current table which will be used for selecting
*
* @param string $tableName Name of table to get columns
*
* @return array SQL sentence with columns for select
*/
public function getColumnStmt($tableName)
{
$colStmt = array();
foreach ($this->tableColumnTypes[$tableName] as $colName => $colType) {
if ($colType['type'] == 'bit' && $this->dumpSettings['hex-blob']) {
$colStmt[] = "LPAD(HEX(`${colName}`),2,'0') AS `${colName}`";
} elseif ($colType['is_blob'] && $this->dumpSettings['hex-blob']) {
$colStmt[] = "HEX(`${colName}`) AS `${colName}`";
} elseif ($colType['is_virtual']) {
$this->dumpSettings['complete-insert'] = true;
continue;
} else {
$colStmt[] = "`${colName}`";
}
}
return $colStmt;
}
/**
* Build SQL List of all columns on current table which will be used for inserting
*
* @param string $tableName Name of table to get columns
*
* @return array columns for sql sentence for insert
*/
public function getColumnNames($tableName)
{
$colNames = array();
foreach ($this->tableColumnTypes[$tableName] as $colName => $colType) {
if ($colType['is_virtual']) {
$this->dumpSettings['complete-insert'] = true;
continue;
} else {
$colNames[] = "`${colName}`";
}
}
return $colNames;
}
}
/**
* Enum with all available compression methods
*
*/
abstract class CompressMethod
{
public static $enums = array(
Mysqldump::NONE,
Mysqldump::GZIP,
Mysqldump::BZIP2,
Mysqldump::GZIPSTREAM,
);
/**
* @param string $c
* @return boolean
*/
public static function isValid($c)
{
return in_array($c, self::$enums);
}
}
abstract class CompressManagerFactory
{
/**
* @param string $c
* @return CompressBzip2|CompressGzip|CompressNone
*/
public static function create($c)
{
$c = ucfirst(strtolower($c));
if (!CompressMethod::isValid($c)) {
throw new Exception("Compression method ($c) is not defined yet");
}
$method = __NAMESPACE__."\\"."Compress".$c;
return new $method;
}
}
class CompressBzip2 extends CompressManagerFactory
{
private $fileHandler = null;
public function __construct()
{
if (!function_exists("bzopen")) {
throw new Exception("Compression is enabled, but bzip2 lib is not installed or configured properly");
}
}
/**
* @param string $filename
*/
public function open($filename)
{
$this->fileHandler = bzopen($filename, "w");
if (false === $this->fileHandler) {
throw new Exception("Output file is not writable");
}
return true;
}
public function write($str)
{
$bytesWritten = bzwrite($this->fileHandler, $str);
if (false === $bytesWritten) {
throw new Exception("Writting to file failed! Probably, there is no more free space left?");
}
return $bytesWritten;
}
public function close()
{
return bzclose($this->fileHandler);
}
}
class CompressGzip extends CompressManagerFactory
{
private $fileHandler = null;
public function __construct()
{
if (!function_exists("gzopen")) {
throw new Exception("Compression is enabled, but gzip lib is not installed or configured properly");
}
}
/**
* @param string $filename
*/
public function open($filename)
{
$this->fileHandler = gzopen($filename, "wb");
if (false === $this->fileHandler) {
throw new Exception("Output file is not writable");
}
return true;
}
public function write($str)
{
$bytesWritten = gzwrite($this->fileHandler, $str);
if (false === $bytesWritten) {
throw new Exception("Writting to file failed! Probably, there is no more free space left?");
}
return $bytesWritten;
}
public function close()
{
return gzclose($this->fileHandler);
}
}
class CompressNone extends CompressManagerFactory
{
private $fileHandler = null;
/**
* @param string $filename
*/
public function open($filename)
{
$this->fileHandler = fopen($filename, "wb");
if (false === $this->fileHandler) {
throw new Exception("Output file is not writable");
}
return true;
}
public function write($str)
{
$bytesWritten = fwrite($this->fileHandler, $str);
if (false === $bytesWritten) {
throw new Exception("Writting to file failed! Probably, there is no more free space left?");
}
return $bytesWritten;
}
public function close()
{
return fclose($this->fileHandler);
}
}
class CompressGzipstream extends CompressManagerFactory
{
private $fileHandler = null;
private $compressContext;
/**
* @param string $filename
*/
public function open($filename)
{
$this->fileHandler = fopen($filename, "wb");
if (false === $this->fileHandler) {
throw new Exception("Output file is not writable");
}
$this->compressContext = deflate_init(ZLIB_ENCODING_GZIP, array('level' => 9));
return true;
}
public function write($str)
{
$bytesWritten = fwrite($this->fileHandler, deflate_add($this->compressContext, $str, ZLIB_NO_FLUSH));
if (false === $bytesWritten) {
throw new Exception("Writting to file failed! Probably, there is no more free space left?");
}
return $bytesWritten;
}
public function close()
{
fwrite($this->fileHandler, deflate_add($this->compressContext, '', ZLIB_FINISH));
return fclose($this->fileHandler);
}
}
/**
* Enum with all available TypeAdapter implementations
*
*/
abstract class TypeAdapter
{
public static $enums = array(
"Sqlite",
"Mysql"
);
/**
* @param string $c
* @return boolean
*/
public static function isValid($c)
{
return in_array($c, self::$enums);
}
}
/**
* TypeAdapter Factory
*
*/
abstract class TypeAdapterFactory
{
protected $dbHandler = null;
protected $dumpSettings = array();
/**
* @param string $c Type of database factory to create (Mysql, Sqlite,...)
* @param PDO $dbHandler
*/
public static function create($c, $dbHandler = null, $dumpSettings = array())
{
$c = ucfirst(strtolower($c));
if (!TypeAdapter::isValid($c)) {
throw new Exception("Database type support for ($c) not yet available");
}
$method = __NAMESPACE__."\\"."TypeAdapter".$c;
return new $method($dbHandler, $dumpSettings);
}
public function __construct($dbHandler = null, $dumpSettings = array())
{
$this->dbHandler = $dbHandler;
$this->dumpSettings = $dumpSettings;
}
/**
* function databases Add sql to create and use database
* @todo make it do something with sqlite
*/
public function databases()
{
return "";
}
public function show_create_table($tableName)
{
return "SELECT tbl_name as 'Table', sql as 'Create Table' ".
"FROM sqlite_master ".
"WHERE type='table' AND tbl_name='$tableName'";
}
/**
* function create_table Get table creation code from database
* @todo make it do something with sqlite
*/
public function create_table($row)
{
return "";
}
public function show_create_view($viewName)
{
return "SELECT tbl_name as 'View', sql as 'Create View' ".
"FROM sqlite_master ".
"WHERE type='view' AND tbl_name='$viewName'";
}
/**
* function create_view Get view creation code from database
* @todo make it do something with sqlite
*/
public function create_view($row)
{
return "";
}
/**
* function show_create_trigger Get trigger creation code from database
* @todo make it do something with sqlite
*/
public function show_create_trigger($triggerName)
{
return "";
}
/**
* function create_trigger Modify trigger code, add delimiters, etc
* @todo make it do something with sqlite
*/
public function create_trigger($triggerName)
{
return "";
}
/**
* function create_procedure Modify procedure code, add delimiters, etc
* @todo make it do something with sqlite
*/
public function create_procedure($procedureName)
{
return "";
}
/**
* function create_function Modify function code, add delimiters, etc
* @todo make it do something with sqlite
*/
public function create_function($functionName)
{
return "";
}
public function show_tables()
{
return "SELECT tbl_name FROM sqlite_master WHERE type='table'";
}
public function show_views()
{
return "SELECT tbl_name FROM sqlite_master WHERE type='view'";
}
public function show_triggers()
{
return "SELECT name FROM sqlite_master WHERE type='trigger'";
}
public function show_columns()
{
if (func_num_args() != 1) {
return "";
}
$args = func_get_args();
return "pragma table_info(${args[0]})";
}
public function show_procedures()
{
return "";
}
public function show_functions()
{
return "";
}
public function show_events()
{
return "";
}
public function setup_transaction()
{
return "";
}
public function start_transaction()
{
return "BEGIN EXCLUSIVE";
}
public function commit_transaction()
{
return "COMMIT";
}
public function lock_table()
{
return "";
}
public function unlock_table()
{
return "";
}
public function start_add_lock_table()
{
return PHP_EOL;
}
public function end_add_lock_table()
{
return PHP_EOL;
}
public function start_add_disable_keys()
{
return PHP_EOL;
}
public function end_add_disable_keys()
{
return PHP_EOL;
}
public function start_disable_foreign_keys_check()
{
return PHP_EOL;
}
public function end_disable_foreign_keys_check()
{
return PHP_EOL;
}
public function add_drop_database()
{
return PHP_EOL;
}
public function add_drop_trigger()
{
return PHP_EOL;
}
public function drop_table()
{
return PHP_EOL;
}
public function drop_view()
{
return PHP_EOL;
}
/**
* Decode column metadata and fill info structure.
* type, is_numeric and is_blob will always be available.
*
* @param array $colType Array returned from "SHOW COLUMNS FROM tableName"
* @return array
*/
public function parseColumnType($colType)
{
return array();
}
public function backup_parameters()
{
return PHP_EOL;
}
public function restore_parameters()
{
return PHP_EOL;
}
}
class TypeAdapterPgsql extends TypeAdapterFactory
{
}
class TypeAdapterDblib extends TypeAdapterFactory
{
}
class TypeAdapterSqlite extends TypeAdapterFactory
{
}
class TypeAdapterMysql extends TypeAdapterFactory
{
const DEFINER_RE = 'DEFINER=`(?:[^`]|``)*`@`(?:[^`]|``)*`';
// Numerical Mysql types
public $mysqlTypes = array(
'numerical' => array(
'bit',
'tinyint',
'smallint',
'mediumint',
'int',
'integer',
'bigint',
'real',
'double',
'float',
'decimal',
'numeric'
),
'blob' => array(
'tinyblob',
'blob',
'mediumblob',
'longblob',
'binary',
'varbinary',
'bit',
'geometry', /* http://bugs.mysql.com/bug.php?id=43544 */
'point',
'linestring',
'polygon',
'multipoint',
'multilinestring',
'multipolygon',
'geometrycollection',
)
);
public function databases()
{
$this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
$args = func_get_args();
$databaseName = $args[0];
$resultSet = $this->dbHandler->query("SHOW VARIABLES LIKE 'character_set_database';");
$characterSet = $resultSet->fetchColumn(1);
$resultSet->closeCursor();
$resultSet = $this->dbHandler->query("SHOW VARIABLES LIKE 'collation_database';");
$collationDb = $resultSet->fetchColumn(1);
$resultSet->closeCursor();
$ret = "";
$ret .= "CREATE DATABASE /*!32312 IF NOT EXISTS*/ `${databaseName}`".
" /*!40100 DEFAULT CHARACTER SET ${characterSet} ".
" COLLATE ${collationDb} */;".PHP_EOL.PHP_EOL.
"USE `${databaseName}`;".PHP_EOL.PHP_EOL;
return $ret;
}
public function show_create_table($tableName)
{
return "SHOW CREATE TABLE `$tableName`";
}
public function show_create_view($viewName)
{
return "SHOW CREATE VIEW `$viewName`";
}
public function show_create_trigger($triggerName)
{
return "SHOW CREATE TRIGGER `$triggerName`";
}
public function show_create_procedure($procedureName)
{
return "SHOW CREATE PROCEDURE `$procedureName`";
}
public function show_create_function($functionName)
{
return "SHOW CREATE FUNCTION `$functionName`";
}
public function show_create_event($eventName)
{
return "SHOW CREATE EVENT `$eventName`";
}
public function create_table($row)
{
if (!isset($row['Create Table'])) {
throw new Exception("Error getting table code, unknown output");
}
$createTable = $row['Create Table'];
if ($this->dumpSettings['reset-auto-increment']) {
$match = "/AUTO_INCREMENT=[0-9]+/s";
$replace = "";
$createTable = preg_replace($match, $replace, $createTable);
}
$ret = "/*!40101 SET @saved_cs_client = @@character_set_client */;".PHP_EOL.
"/*!40101 SET character_set_client = ".$this->dumpSettings['default-character-set']." */;".PHP_EOL.
$createTable.";".PHP_EOL.
"/*!40101 SET character_set_client = @saved_cs_client */;".PHP_EOL.
PHP_EOL;
return $ret;
}
public function create_view($row)
{
$ret = "";
if (!isset($row['Create View'])) {
throw new Exception("Error getting view structure, unknown output");
}
$viewStmt = $row['Create View'];
$definerStr = $this->dumpSettings['skip-definer'] ? '' : '/*!50013 \2 */'.PHP_EOL;
if ($viewStmtReplaced = preg_replace(
'/^(CREATE(?:\s+ALGORITHM=(?:UNDEFINED|MERGE|TEMPTABLE))?)\s+('
.self::DEFINER_RE.'(?:\s+SQL SECURITY DEFINER|INVOKER)?)?\s+(VIEW .+)$/',
'/*!50001 \1 */'.PHP_EOL.$definerStr.'/*!50001 \3 */',
$viewStmt,
1
)) {
$viewStmt = $viewStmtReplaced;
};
$ret .= $viewStmt.';'.PHP_EOL.PHP_EOL;
return $ret;
}
public function create_trigger($row)
{
$ret = "";
if (!isset($row['SQL Original Statement'])) {
throw new Exception("Error getting trigger code, unknown output");
}
$triggerStmt = $row['SQL Original Statement'];
$definerStr = $this->dumpSettings['skip-definer'] ? '' : '/*!50017 \2*/ ';
if ($triggerStmtReplaced = preg_replace(
'/^(CREATE)\s+('.self::DEFINER_RE.')?\s+(TRIGGER\s.*)$/s',
'/*!50003 \1*/ '.$definerStr.'/*!50003 \3 */',
$triggerStmt,
1
)) {
$triggerStmt = $triggerStmtReplaced;
}
$ret .= "DELIMITER ;;".PHP_EOL.
$triggerStmt.";;".PHP_EOL.
"DELIMITER ;".PHP_EOL.PHP_EOL;
return $ret;
}
public function create_procedure($row)
{
$ret = "";
if (!isset($row['Create Procedure'])) {
throw new Exception("Error getting procedure code, unknown output. ".
"Please check 'https://bugs.mysql.com/bug.php?id=14564'");
}
$procedureStmt = $row['Create Procedure'];
if ( $this->dumpSettings['skip-definer'] ) {
if ($procedureStmtReplaced = preg_replace(
'/^(CREATE)\s+('.self::DEFINER_RE.')?\s+(PROCEDURE\s.*)$/s',
'\1 \3',
$procedureStmt,
1
)) {
$procedureStmt = $procedureStmtReplaced;
}
}
$ret .= "/*!50003 DROP PROCEDURE IF EXISTS `".
$row['Procedure']."` */;".PHP_EOL.
"/*!40101 SET @saved_cs_client = @@character_set_client */;".PHP_EOL.
"/*!40101 SET character_set_client = ".$this->dumpSettings['default-character-set']." */;".PHP_EOL.
"DELIMITER ;;".PHP_EOL.
$procedureStmt." ;;".PHP_EOL.
"DELIMITER ;".PHP_EOL.
"/*!40101 SET character_set_client = @saved_cs_client */;".PHP_EOL.PHP_EOL;
return $ret;
}
public function create_function($row)
{
$ret = "";
if (!isset($row['Create Function'])) {
throw new Exception("Error getting function code, unknown output. ".
"Please check 'https://bugs.mysql.com/bug.php?id=14564'");
}
$functionStmt = $row['Create Function'];
$characterSetClient = $row['character_set_client'];
$collationConnection = $row['collation_connection'];
$sqlMode = $row['sql_mode'];
if ( $this->dumpSettings['skip-definer'] ) {
if ($functionStmtReplaced = preg_replace(
'/^(CREATE)\s+('.self::DEFINER_RE.')?\s+(FUNCTION\s.*)$/s',
'\1 \3',
$functionStmt,
1
)) {
$functionStmt = $functionStmtReplaced;
}
}
$ret .= "/*!50003 DROP FUNCTION IF EXISTS `".
$row['Function']."` */;".PHP_EOL.
"/*!40101 SET @saved_cs_client = @@character_set_client */;".PHP_EOL.
"/*!50003 SET @saved_cs_results = @@character_set_results */ ;".PHP_EOL.
"/*!50003 SET @saved_col_connection = @@collation_connection */ ;".PHP_EOL.
"/*!40101 SET character_set_client = ".$characterSetClient." */;".PHP_EOL.
"/*!40101 SET character_set_results = ".$characterSetClient." */;".PHP_EOL.
"/*!50003 SET collation_connection = ".$collationConnection." */ ;".PHP_EOL.
"/*!50003 SET @saved_sql_mode = @@sql_mode */ ;;".PHP_EOL.
"/*!50003 SET sql_mode = '".$sqlMode."' */ ;;".PHP_EOL.
"/*!50003 SET @saved_time_zone = @@time_zone */ ;;".PHP_EOL.
"/*!50003 SET time_zone = 'SYSTEM' */ ;;".PHP_EOL.
"DELIMITER ;;".PHP_EOL.
$functionStmt." ;;".PHP_EOL.
"DELIMITER ;".PHP_EOL.
"/*!50003 SET sql_mode = @saved_sql_mode */ ;".PHP_EOL.
"/*!50003 SET character_set_client = @saved_cs_client */ ;".PHP_EOL.
"/*!50003 SET character_set_results = @saved_cs_results */ ;".PHP_EOL.
"/*!50003 SET collation_connection = @saved_col_connection */ ;".PHP_EOL.
"/*!50106 SET TIME_ZONE= @saved_time_zone */ ;".PHP_EOL.PHP_EOL;
return $ret;
}
public function create_event($row)
{
$ret = "";
if (!isset($row['Create Event'])) {
throw new Exception("Error getting event code, unknown output. ".
"Please check 'http://stackoverflow.com/questions/10853826/mysql-5-5-create-event-gives-syntax-error'");
}
$eventName = $row['Event'];
$eventStmt = $row['Create Event'];
$sqlMode = $row['sql_mode'];
$definerStr = $this->dumpSettings['skip-definer'] ? '' : '/*!50117 \2*/ ';
if ($eventStmtReplaced = preg_replace(
'/^(CREATE)\s+('.self::DEFINER_RE.')?\s+(EVENT .*)$/',
'/*!50106 \1*/ '.$definerStr.'/*!50106 \3 */',
$eventStmt,
1
)) {
$eventStmt = $eventStmtReplaced;
}
$ret .= "/*!50106 SET @save_time_zone= @@TIME_ZONE */ ;".PHP_EOL.
"/*!50106 DROP EVENT IF EXISTS `".$eventName."` */;".PHP_EOL.
"DELIMITER ;;".PHP_EOL.
"/*!50003 SET @saved_cs_client = @@character_set_client */ ;;".PHP_EOL.
"/*!50003 SET @saved_cs_results = @@character_set_results */ ;;".PHP_EOL.
"/*!50003 SET @saved_col_connection = @@collation_connection */ ;;".PHP_EOL.
"/*!50003 SET character_set_client = utf8 */ ;;".PHP_EOL.
"/*!50003 SET character_set_results = utf8 */ ;;".PHP_EOL.
"/*!50003 SET collation_connection = utf8_general_ci */ ;;".PHP_EOL.
"/*!50003 SET @saved_sql_mode = @@sql_mode */ ;;".PHP_EOL.
"/*!50003 SET sql_mode = '".$sqlMode."' */ ;;".PHP_EOL.
"/*!50003 SET @saved_time_zone = @@time_zone */ ;;".PHP_EOL.
"/*!50003 SET time_zone = 'SYSTEM' */ ;;".PHP_EOL.
$eventStmt." ;;".PHP_EOL.
"/*!50003 SET time_zone = @saved_time_zone */ ;;".PHP_EOL.
"/*!50003 SET sql_mode = @saved_sql_mode */ ;;".PHP_EOL.
"/*!50003 SET character_set_client = @saved_cs_client */ ;;".PHP_EOL.
"/*!50003 SET character_set_results = @saved_cs_results */ ;;".PHP_EOL.
"/*!50003 SET collation_connection = @saved_col_connection */ ;;".PHP_EOL.
"DELIMITER ;".PHP_EOL.
"/*!50106 SET TIME_ZONE= @save_time_zone */ ;".PHP_EOL.PHP_EOL;
// Commented because we are doing this in restore_parameters()
// "/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;" . PHP_EOL . PHP_EOL;
return $ret;
}
public function show_tables()
{
$this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
$args = func_get_args();
return "SELECT TABLE_NAME AS tbl_name ".
"FROM INFORMATION_SCHEMA.TABLES ".
"WHERE TABLE_TYPE='BASE TABLE' AND TABLE_SCHEMA='${args[0]}'";
}
public function show_views()
{
$this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
$args = func_get_args();
return "SELECT TABLE_NAME AS tbl_name ".
"FROM INFORMATION_SCHEMA.TABLES ".
"WHERE TABLE_TYPE='VIEW' AND TABLE_SCHEMA='${args[0]}'";
}
public function show_triggers()
{
$this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
$args = func_get_args();
return "SHOW TRIGGERS FROM `${args[0]}`;";
}
public function show_columns()
{
$this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
$args = func_get_args();
return "SHOW COLUMNS FROM `${args[0]}`;";
}
public function show_procedures()
{
$this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
$args = func_get_args();
return "SELECT SPECIFIC_NAME AS procedure_name ".
"FROM INFORMATION_SCHEMA.ROUTINES ".
"WHERE ROUTINE_TYPE='PROCEDURE' AND ROUTINE_SCHEMA='${args[0]}'";
}
public function show_functions()
{
$this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
$args = func_get_args();
return "SELECT SPECIFIC_NAME AS function_name ".
"FROM INFORMATION_SCHEMA.ROUTINES ".
"WHERE ROUTINE_TYPE='FUNCTION' AND ROUTINE_SCHEMA='${args[0]}'";
}
/**
* Get query string to ask for names of events from current database.
*
* @param string Name of database
* @return string
*/
public function show_events()
{
$this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
$args = func_get_args();
return "SELECT EVENT_NAME AS event_name ".
"FROM INFORMATION_SCHEMA.EVENTS ".
"WHERE EVENT_SCHEMA='${args[0]}'";
}
public function setup_transaction()
{
return "SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ";
}
public function start_transaction()
{
return "START TRANSACTION " .
"/*!40100 WITH CONSISTENT SNAPSHOT */";
}
public function commit_transaction()
{
return "COMMIT";
}
public function lock_table()
{
$this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
$args = func_get_args();
return $this->dbHandler->exec("LOCK TABLES `${args[0]}` READ LOCAL");
}
public function unlock_table()
{
return $this->dbHandler->exec("UNLOCK TABLES");
}
public function start_add_lock_table()
{
$this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
$args = func_get_args();
return "LOCK TABLES `${args[0]}` WRITE;".PHP_EOL;
}
public function end_add_lock_table()
{
return "UNLOCK TABLES;".PHP_EOL;
}
public function start_add_disable_keys()
{
$this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
$args = func_get_args();
return "/*!40000 ALTER TABLE `${args[0]}` DISABLE KEYS */;".
PHP_EOL;
}
public function end_add_disable_keys()
{
$this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
$args = func_get_args();
return "/*!40000 ALTER TABLE `${args[0]}` ENABLE KEYS */;".
PHP_EOL;
}
public function start_disable_autocommit()
{
return "SET autocommit=0;".PHP_EOL;
}
public function end_disable_autocommit()
{
return "COMMIT;".PHP_EOL;
}
public function add_drop_database()
{
$this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
$args = func_get_args();
return "/*!40000 DROP DATABASE IF EXISTS `${args[0]}`*/;".
PHP_EOL.PHP_EOL;
}
public function add_drop_trigger()
{
$this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
$args = func_get_args();
return "DROP TRIGGER IF EXISTS `${args[0]}`;".PHP_EOL;
}
public function drop_table()
{
$this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
$args = func_get_args();
return "DROP TABLE IF EXISTS `${args[0]}`;".PHP_EOL;
}
public function drop_view()
{
$this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
$args = func_get_args();
return "DROP TABLE IF EXISTS `${args[0]}`;".PHP_EOL.
"/*!50001 DROP VIEW IF EXISTS `${args[0]}`*/;".PHP_EOL;
}
public function getDatabaseHeader()
{
$this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
$args = func_get_args();
return "--".PHP_EOL.
"-- Current Database: `${args[0]}`".PHP_EOL.
"--".PHP_EOL.PHP_EOL;
}
/**
* Decode column metadata and fill info structure.
* type, is_numeric and is_blob will always be available.
*
* @param array $colType Array returned from "SHOW COLUMNS FROM tableName"
* @return array
*/
public function parseColumnType($colType)
{
$colInfo = array();
$colParts = explode(" ", $colType['Type']);
if ($fparen = strpos($colParts[0], "(")) {
$colInfo['type'] = substr($colParts[0], 0, $fparen);
$colInfo['length'] = str_replace(")", "", substr($colParts[0], $fparen + 1));
$colInfo['attributes'] = isset($colParts[1]) ? $colParts[1] : null;
} else {
$colInfo['type'] = $colParts[0];
}
$colInfo['is_numeric'] = in_array($colInfo['type'], $this->mysqlTypes['numerical']);
$colInfo['is_blob'] = in_array($colInfo['type'], $this->mysqlTypes['blob']);
// for virtual columns that are of type 'Extra', column type
// could by "STORED GENERATED" or "VIRTUAL GENERATED"
// MySQL reference: https://dev.mysql.com/doc/refman/5.7/en/create-table-generated-columns.html
$colInfo['is_virtual'] = strpos($colType['Extra'], "VIRTUAL GENERATED") !== false || strpos($colType['Extra'], "STORED GENERATED") !== false;
return $colInfo;
}
public function backup_parameters()
{
$ret = "/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;".PHP_EOL.
"/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;".PHP_EOL.
"/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;".PHP_EOL.
"/*!40101 SET NAMES ".$this->dumpSettings['default-character-set']." */;".PHP_EOL;
if (false === $this->dumpSettings['skip-tz-utc']) {
$ret .= "/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;".PHP_EOL.
"/*!40103 SET TIME_ZONE='+00:00' */;".PHP_EOL;
}
$ret .= "/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;".PHP_EOL.
"/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;".PHP_EOL.
"/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;".PHP_EOL.
"/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;".PHP_EOL.PHP_EOL;
return $ret;
}
public function restore_parameters()
{
$ret = "";
if (false === $this->dumpSettings['skip-tz-utc']) {
$ret .= "/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;".PHP_EOL;
}
$ret .= "/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;".PHP_EOL.
"/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;".PHP_EOL.
"/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;".PHP_EOL.
"/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;".PHP_EOL.
"/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;".PHP_EOL.
"/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;".PHP_EOL.
"/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;".PHP_EOL.PHP_EOL;
return $ret;
}
/**
* Check number of parameters passed to function, useful when inheriting.
* Raise exception if unexpected.
*
* @param integer $num_args
* @param integer $expected_num_args
* @param string $method_name
*/
private function check_parameters($num_args, $expected_num_args, $method_name)
{
if ($num_args != $expected_num_args) {
throw new Exception("Unexpected parameter passed to $method_name");
}
return;
}
}