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<?php defined('SYSPATH') OR die('No direct access allowed.');
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/**
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* Provides database access in a platform agnostic way, using simple query building blocks.
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*
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* $Id: Database.php 4342 2009-05-08 16:56:01Z jheathco $
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*
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* @package Core
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* @author Kohana Team
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* @copyright (c) 2007-2008 Kohana Team
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* @license http://kohanaphp.com/license.html
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*/
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class Database {
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// Database instances
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public static $instances = array();
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// Global benchmark
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public static $benchmarks = array();
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// Configuration
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protected $config = array
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(
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'benchmark' => FALSE,
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'persistent' => FALSE,
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'connection' => '',
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'character_set' => 'utf8',
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'table_prefix' => '',
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'object' => TRUE,
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'cache' => FALSE,
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'escape' => TRUE,
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);
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// Database driver object
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protected $driver;
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protected $link;
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// Un-compiled parts of the SQL query
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protected $select = array();
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protected $set = array();
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protected $from = array();
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protected $join = array();
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protected $where = array();
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protected $orderby = array();
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protected $order = array();
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protected $groupby = array();
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protected $having = array();
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protected $distinct = FALSE;
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protected $limit = FALSE;
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protected $offset = FALSE;
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protected $last_query = '';
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// Stack of queries for push/pop
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protected $query_history = array();
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/**
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* Returns a singleton instance of Database.
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*
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* @param mixed configuration array or DSN
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* @return Database
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*/
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public static function & instance($name = 'default', $config = NULL)
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{
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if ( ! isset(Database::$instances[$name]))
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{
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// Create a new instance
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Database::$instances[$name] = new Database($config === NULL ? $name : $config);
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}
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return Database::$instances[$name];
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}
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/**
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* Returns the name of a given database instance.
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*
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* @param Database instance of Database
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* @return string
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*/
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public static function instance_name(Database $db)
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{
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return array_search($db, Database::$instances, TRUE);
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}
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/**
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* Sets up the database configuration, loads the Database_Driver.
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*
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* @throws Kohana_Database_Exception
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*/
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public function __construct($config = array())
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{
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if (!is_array($config) && count($config))
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{
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// Parse the DSN, creating an array to hold the connection parameters
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$db = array
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(
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'type' => 'mysql',
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'user' => FALSE,
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'pass' => FALSE,
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'host' => FALSE,
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'port' => FALSE,
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'socket' => FALSE,
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'database' => FALSE
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);
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// Reset the connection array to the database config
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$this->config['connection'] = $db;
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if (Config::get('db_type') != '')
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$this->config['connection']['type'] = Config::get('db_type');
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$this->config['connection']['user'] = Config::get('db_user');
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$this->config['connection']['pass'] = Config::get('db_password');
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$this->config['connection']['host'] = Config::get('db_host');
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$this->config['connection']['database'] = Config::get('db_name');
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$this->config['table_prefix'] = Config::get('db_table_prefix');
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}
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else
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{
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$this->config['connection'] = $config;
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}
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// Set driver name
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$driver = 'Database_'.ucfirst($this->config['connection']['type']).'_Driver';
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// Load the driver
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if ( ! Kohana::auto_load($driver))
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throw new Kohana_Database_Exception('core.driver_not_found', $this->config['connection']['type'], get_class($this));
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// Initialize the driver
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$this->driver = new $driver($this->config);
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// Validate the driver
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if ( ! ($this->driver instanceof Database_Driver))
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throw new Kohana_Database_Exception('core.driver_implements', $this->config['connection']['type'], get_class($this), 'Database_Driver');
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Log::add('debug', 'Database Library initialized');
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}
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/**
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* Simple connect method to get the database queries up and running.
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*
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* @return void
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*/
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public function connect()
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{
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// A link can be a resource or an object
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if ( ! is_resource($this->link) AND ! is_object($this->link))
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{
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$this->link = $this->driver->connect();
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if ( ! is_resource($this->link) AND ! is_object($this->link))
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throw new Kohana_Database_Exception('database.connection', $this->driver->show_error());
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// Clear password after successful connect
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$this->config['connection']['pass'] = NULL;
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}
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}
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/**
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* Runs a query into the driver and returns the result.
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*
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* @param string SQL query to execute
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* @return Database_Result
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*/
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public function query($sql = '')
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{
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if ($sql == '') return FALSE;
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// No link? Connect!
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$this->link or $this->connect();
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// Start the benchmark
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$start = microtime(TRUE);
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if (func_num_args() > 1) //if we have more than one argument ($sql)
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{
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$argv = func_get_args();
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$binds = (is_array(next($argv))) ? current($argv) : array_slice($argv, 1);
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}
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// Compile binds if needed
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if (isset($binds))
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{
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$sql = $this->compile_binds($sql, $binds);
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}
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// Fetch the result
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$result = $this->driver->query($this->last_query = $sql);
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// Stop the benchmark
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$stop = microtime(TRUE);
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if ($this->config['benchmark'] == TRUE)
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{
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// Benchmark the query
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Database::$benchmarks[] = array('query' => $sql, 'time' => $stop - $start, 'rows' => count($result));
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}
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return $result;
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}
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/**
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* Selects the column names for a database query.
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*
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* @param string string or array of column names to select
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* @return Database This Database object.
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*/
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public function select($sql = '*')
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{
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if (func_num_args() > 1)
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{
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$sql = func_get_args();
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}
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elseif (is_string($sql))
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{
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$sql = explode(',', $sql);
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}
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else
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{
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$sql = (array) $sql;
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}
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foreach ($sql as $val)
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{
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if (($val = trim($val)) === '') continue;
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if (strpos($val, '(') === FALSE AND $val !== '*')
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{
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if (preg_match('/^DISTINCT\s++(.+)$/i', $val, $matches))
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{
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// Only prepend with table prefix if table name is specified
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$val = (strpos($matches[1], '.') !== FALSE) ? $this->config['table_prefix'].$matches[1] : $matches[1];
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$this->distinct = TRUE;
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}
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else
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{
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$val = (strpos($val, '.') !== FALSE) ? $this->config['table_prefix'].$val : $val;
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}
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$val = $this->driver->escape_column($val);
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}
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$this->select[] = $val;
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}
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return $this;
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}
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/**
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* Selects the from table(s) for a database query.
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*
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* @param string string or array of tables to select
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* @return Database This Database object.
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*/
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public function from($sql)
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{
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if (func_num_args() > 1)
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{
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$sql = func_get_args();
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}
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elseif (is_string($sql))
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{
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$sql = explode(',', $sql);
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}
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else
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{
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$sql = array($sql);
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}
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foreach ($sql as $val)
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{
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if (is_string($val))
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{
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if (($val = trim($val)) === '') continue;
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// TODO: Temporary solution, this should be moved to database driver (AS is checked for twice)
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if (stripos($val, ' AS ') !== FALSE)
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{
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$val = str_ireplace(' AS ', ' AS ', $val);
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list($table, $alias) = explode(' AS ', $val);
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// Attach prefix to both sides of the AS
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$val = $this->config['table_prefix'].$table.' AS '.$this->config['table_prefix'].$alias;
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}
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else
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{
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$val = $this->config['table_prefix'].$val;
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}
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}
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$this->from[] = $val;
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}
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return $this;
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}
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/**
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* Generates the JOIN portion of the query.
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*
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* @param string table name
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* @param string|array where key or array of key => value pairs
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* @param string where value
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* @param string type of join
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* @return Database This Database object.
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*/
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public function join($table, $key, $value = NULL, $type = '')
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{
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$join = array();
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if ( ! empty($type))
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{
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$type = strtoupper(trim($type));
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if ( ! in_array($type, array('LEFT', 'RIGHT', 'OUTER', 'INNER', 'LEFT OUTER', 'RIGHT OUTER'), TRUE))
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{
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$type = '';
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}
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else
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{
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$type .= ' ';
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}
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}
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$cond = array();
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$keys = is_array($key) ? $key : array($key => $value);
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foreach ($keys as $key => $value)
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{
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$key = (strpos($key, '.') !== FALSE) ? $this->config['table_prefix'].$key : $key;
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if (is_string($value))
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{
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// Only escape if it's a string
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$value = $this->driver->escape_column($this->config['table_prefix'].$value);
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}
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$cond[] = $this->driver->where($key, $value, 'AND ', count($cond), FALSE);
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}
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if ( ! is_array($this->join))
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{
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$this->join = array();
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}
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if ( ! is_array($table))
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{
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$table = array($table);
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}
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foreach ($table as $t)
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{
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if (is_string($t))
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{
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// TODO: Temporary solution, this should be moved to database driver (AS is checked for twice)
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if (stripos($t, ' AS ') !== FALSE)
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{
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$t = str_ireplace(' AS ', ' AS ', $t);
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list($table, $alias) = explode(' AS ', $t);
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// Attach prefix to both sides of the AS
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$t = $this->config['table_prefix'].$table.' AS '.$this->config['table_prefix'].$alias;
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}
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else
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{
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$t = $this->config['table_prefix'].$t;
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}
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}
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$join['tables'][] = $this->driver->escape_column($t);
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}
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$join['conditions'] = '('.trim(implode(' ', $cond)).')';
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$join['type'] = $type;
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$this->join[] = $join;
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return $this;
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}
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/**
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* Selects the where(s) for a database query.
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*
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* @param string|array key name or array of key => value pairs
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* @param string value to match with key
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* @param boolean disable quoting of WHERE clause
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* @return Database This Database object.
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*/
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public function where($key, $value = NULL, $quote = TRUE)
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{
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$quote = (func_num_args() < 2 AND ! is_array($key)) ? -1 : $quote;
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if (is_object($key))
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{
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$keys = array((string) $key => '');
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}
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elseif ( ! is_array($key))
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{
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$keys = array($key => $value);
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}
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else
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{
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$keys = $key;
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}
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foreach ($keys as $key => $value)
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{
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$key = (strpos($key, '.') !== FALSE) ? $this->config['table_prefix'].$key : $key;
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$this->where[] = $this->driver->where($key, $value, 'AND ', count($this->where), $quote);
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}
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return $this;
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}
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/**
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* Selects the or where(s) for a database query.
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*
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* @param string|array key name or array of key => value pairs
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* @param string value to match with key
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* @param boolean disable quoting of WHERE clause
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* @return Database This Database object.
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*/
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public function orwhere($key, $value = NULL, $quote = TRUE)
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{
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$quote = (func_num_args() < 2 AND ! is_array($key)) ? -1 : $quote;
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if (is_object($key))
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{
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$keys = array((string) $key => '');
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}
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elseif ( ! is_array($key))
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{
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$keys = array($key => $value);
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}
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else
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{
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$keys = $key;
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}
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foreach ($keys as $key => $value)
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{
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$key = (strpos($key, '.') !== FALSE) ? $this->config['table_prefix'].$key : $key;
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$this->where[] = $this->driver->where($key, $value, 'OR ', count($this->where), $quote);
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}
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return $this;
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}
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/**
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* Selects the like(s) for a database query.
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*
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* @param string|array field name or array of field => match pairs
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* @param string like value to match with field
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* @param boolean automatically add starting and ending wildcards
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* @return Database This Database object.
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*/
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public function like($field, $match = '', $auto = TRUE)
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{
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$fields = is_array($field) ? $field : array($field => $match);
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foreach ($fields as $field => $match)
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{
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$field = (strpos($field, '.') !== FALSE) ? $this->config['table_prefix'].$field : $field;
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$this->where[] = $this->driver->like($field, $match, $auto, 'AND ', count($this->where));
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}
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return $this;
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}
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/**
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* Selects the or like(s) for a database query.
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*
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* @param string|array field name or array of field => match pairs
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* @param string like value to match with field
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* @param boolean automatically add starting and ending wildcards
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* @return Database This Database object.
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*/
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public function orlike($field, $match = '', $auto = TRUE)
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{
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$fields = is_array($field) ? $field : array($field => $match);
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foreach ($fields as $field => $match)
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{
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$field = (strpos($field, '.') !== FALSE) ? $this->config['table_prefix'].$field : $field;
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$this->where[] = $this->driver->like($field, $match, $auto, 'OR ', count($this->where));
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}
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return $this;
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}
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/**
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* Selects the not like(s) for a database query.
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*
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* @param string|array field name or array of field => match pairs
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* @param string like value to match with field
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* @param boolean automatically add starting and ending wildcards
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* @return Database This Database object.
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*/
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public function notlike($field, $match = '', $auto = TRUE)
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{
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$fields = is_array($field) ? $field : array($field => $match);
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foreach ($fields as $field => $match)
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{
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$field = (strpos($field, '.') !== FALSE) ? $this->config['table_prefix'].$field : $field;
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$this->where[] = $this->driver->notlike($field, $match, $auto, 'AND ', count($this->where));
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}
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return $this;
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}
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/**
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* Selects the or not like(s) for a database query.
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*
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* @param string|array field name or array of field => match pairs
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* @param string like value to match with field
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* @return Database This Database object.
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*/
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public function ornotlike($field, $match = '', $auto = TRUE)
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{
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$fields = is_array($field) ? $field : array($field => $match);
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foreach ($fields as $field => $match)
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{
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$field = (strpos($field, '.') !== FALSE) ? $this->config['table_prefix'].$field : $field;
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$this->where[] = $this->driver->notlike($field, $match, $auto, 'OR ', count($this->where));
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}
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return $this;
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}
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/**
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* Selects the like(s) for a database query.
|
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*
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* @param string|array field name or array of field => match pairs
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* @param string like value to match with field
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* @return Database This Database object.
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*/
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public function regex($field, $match = '')
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{
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$fields = is_array($field) ? $field : array($field => $match);
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foreach ($fields as $field => $match)
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{
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$field = (strpos($field, '.') !== FALSE) ? $this->config['table_prefix'].$field : $field;
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$this->where[] = $this->driver->regex($field, $match, 'AND ', count($this->where));
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}
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return $this;
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}
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/**
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* Selects the or like(s) for a database query.
|
|
*
|
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* @param string|array field name or array of field => match pairs
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* @param string like value to match with field
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* @return Database This Database object.
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*/
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public function orregex($field, $match = '')
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{
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$fields = is_array($field) ? $field : array($field => $match);
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foreach ($fields as $field => $match)
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{
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$field = (strpos($field, '.') !== FALSE) ? $this->config['table_prefix'].$field : $field;
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$this->where[] = $this->driver->regex($field, $match, 'OR ', count($this->where));
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}
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|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Selects the not regex(s) for a database query.
|
|
*
|
|
* @param string|array field name or array of field => match pairs
|
|
* @param string regex value to match with field
|
|
* @return Database This Database object.
|
|
*/
|
|
public function notregex($field, $match = '')
|
|
{
|
|
$fields = is_array($field) ? $field : array($field => $match);
|
|
|
|
foreach ($fields as $field => $match)
|
|
{
|
|
$field = (strpos($field, '.') !== FALSE) ? $this->config['table_prefix'].$field : $field;
|
|
$this->where[] = $this->driver->notregex($field, $match, 'AND ', count($this->where));
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Selects the or not regex(s) for a database query.
|
|
*
|
|
* @param string|array field name or array of field => match pairs
|
|
* @param string regex value to match with field
|
|
* @return Database This Database object.
|
|
*/
|
|
public function ornotregex($field, $match = '')
|
|
{
|
|
$fields = is_array($field) ? $field : array($field => $match);
|
|
|
|
foreach ($fields as $field => $match)
|
|
{
|
|
$field = (strpos($field, '.') !== FALSE) ? $this->config['table_prefix'].$field : $field;
|
|
$this->where[] = $this->driver->notregex($field, $match, 'OR ', count($this->where));
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Chooses the column to group by in a select query.
|
|
*
|
|
* @param string column name to group by
|
|
* @return Database This Database object.
|
|
*/
|
|
public function groupby($by)
|
|
{
|
|
if ( ! is_array($by))
|
|
{
|
|
$by = explode(',', (string) $by);
|
|
}
|
|
|
|
foreach ($by as $val)
|
|
{
|
|
$val = trim($val);
|
|
|
|
if ($val != '')
|
|
{
|
|
// Add the table prefix if we are using table.column names
|
|
if(strpos($val, '.'))
|
|
{
|
|
$val = $this->config['table_prefix'].$val;
|
|
}
|
|
|
|
$this->groupby[] = $this->driver->escape_column($val);
|
|
}
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Selects the having(s) for a database query.
|
|
*
|
|
* @param string|array key name or array of key => value pairs
|
|
* @param string value to match with key
|
|
* @param boolean disable quoting of WHERE clause
|
|
* @return Database This Database object.
|
|
*/
|
|
public function having($key, $value = '', $quote = TRUE)
|
|
{
|
|
$this->having[] = $this->driver->where($key, $value, 'AND', count($this->having), TRUE);
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Selects the or having(s) for a database query.
|
|
*
|
|
* @param string|array key name or array of key => value pairs
|
|
* @param string value to match with key
|
|
* @param boolean disable quoting of WHERE clause
|
|
* @return Database This Database object.
|
|
*/
|
|
public function orhaving($key, $value = '', $quote = TRUE)
|
|
{
|
|
$this->having[] = $this->driver->where($key, $value, 'OR', count($this->having), TRUE);
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Chooses which column(s) to order the select query by.
|
|
*
|
|
* @param string|array column(s) to order on, can be an array, single column, or comma seperated list of columns
|
|
* @param string direction of the order
|
|
* @return Database This Database object.
|
|
*/
|
|
public function orderby($orderby, $direction = NULL)
|
|
{
|
|
if ( ! is_array($orderby))
|
|
{
|
|
$orderby = array($orderby => $direction);
|
|
}
|
|
|
|
foreach ($orderby as $column => $direction)
|
|
{
|
|
$direction = strtoupper(trim($direction));
|
|
|
|
// Add a direction if the provided one isn't valid
|
|
if ( ! in_array($direction, array('ASC', 'DESC', 'RAND()', 'RANDOM()', 'NULL')))
|
|
{
|
|
$direction = 'ASC';
|
|
}
|
|
|
|
// Add the table prefix if a table.column was passed
|
|
if (strpos($column, '.'))
|
|
{
|
|
$column = $this->config['table_prefix'].$column;
|
|
}
|
|
|
|
$this->orderby[] = $this->driver->escape_column($column).' '.$direction;
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Selects the limit section of a query.
|
|
*
|
|
* @param integer number of rows to limit result to
|
|
* @param integer offset in result to start returning rows from
|
|
* @return Database This Database object.
|
|
*/
|
|
public function limit($limit, $offset = NULL)
|
|
{
|
|
$this->limit = (int) $limit;
|
|
|
|
if ($offset !== NULL OR ! is_int($this->offset))
|
|
{
|
|
$this->offset($offset);
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Sets the offset portion of a query.
|
|
*
|
|
* @param integer offset value
|
|
* @return Database This Database object.
|
|
*/
|
|
public function offset($value)
|
|
{
|
|
$this->offset = (int) $value;
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Allows key/value pairs to be set for inserting or updating.
|
|
*
|
|
* @param string|array key name or array of key => value pairs
|
|
* @param string value to match with key
|
|
* @return Database This Database object.
|
|
*/
|
|
public function set($key, $value = '')
|
|
{
|
|
if ( ! is_array($key))
|
|
{
|
|
$key = array($key => $value);
|
|
}
|
|
|
|
foreach ($key as $k => $v)
|
|
{
|
|
// Add a table prefix if the column includes the table.
|
|
if (strpos($k, '.'))
|
|
$k = $this->config['table_prefix'].$k;
|
|
|
|
$this->set[$k] = $this->driver->escape($v);
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Compiles the select statement based on the other functions called and runs the query.
|
|
*
|
|
* @param string table name
|
|
* @param string limit clause
|
|
* @param string offset clause
|
|
* @return Database_Result
|
|
*/
|
|
public function get($table = '', $limit = NULL, $offset = NULL)
|
|
{
|
|
if ($table != '')
|
|
{
|
|
$this->from($table);
|
|
}
|
|
|
|
if ( ! is_null($limit))
|
|
{
|
|
$this->limit($limit, $offset);
|
|
}
|
|
|
|
$sql = $this->driver->compile_select(get_object_vars($this));
|
|
|
|
$this->reset_select();
|
|
|
|
$result = $this->query($sql);
|
|
|
|
$this->last_query = $sql;
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Compiles the select statement based on the other functions called and runs the query.
|
|
*
|
|
* @param string table name
|
|
* @param array where clause
|
|
* @param string limit clause
|
|
* @param string offset clause
|
|
* @return Database This Database object.
|
|
*/
|
|
public function getwhere($table = '', $where = NULL, $limit = NULL, $offset = NULL)
|
|
{
|
|
if ($table != '')
|
|
{
|
|
$this->from($table);
|
|
}
|
|
|
|
if ( ! is_null($where))
|
|
{
|
|
$this->where($where);
|
|
}
|
|
|
|
if ( ! is_null($limit))
|
|
{
|
|
$this->limit($limit, $offset);
|
|
}
|
|
|
|
$sql = $this->driver->compile_select(get_object_vars($this));
|
|
|
|
$this->reset_select();
|
|
|
|
$result = $this->query($sql);
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Compiles the select statement based on the other functions called and returns the query string.
|
|
*
|
|
* @param string table name
|
|
* @param string limit clause
|
|
* @param string offset clause
|
|
* @return string sql string
|
|
*/
|
|
public function compile($table = '', $limit = NULL, $offset = NULL)
|
|
{
|
|
if ($table != '')
|
|
{
|
|
$this->from($table);
|
|
}
|
|
|
|
if ( ! is_null($limit))
|
|
{
|
|
$this->limit($limit, $offset);
|
|
}
|
|
|
|
$sql = $this->driver->compile_select(get_object_vars($this));
|
|
|
|
$this->reset_select();
|
|
|
|
return $sql;
|
|
}
|
|
|
|
/**
|
|
* Compiles an insert string and runs the query.
|
|
*
|
|
* @param string table name
|
|
* @param array array of key/value pairs to insert
|
|
* @return Database_Result Query result
|
|
*/
|
|
public function insert($table = '', $set = NULL)
|
|
{
|
|
if ( ! is_null($set))
|
|
{
|
|
$this->set($set);
|
|
}
|
|
|
|
if ($this->set == NULL)
|
|
throw new Kohana_Database_Exception('database.must_use_set');
|
|
|
|
if ($table == '')
|
|
{
|
|
if ( ! isset($this->from[0]))
|
|
throw new Kohana_Database_Exception('database.must_use_table');
|
|
|
|
$table = $this->from[0];
|
|
}
|
|
|
|
// If caching is enabled, clear the cache before inserting
|
|
($this->config['cache'] === TRUE) and $this->clear_cache();
|
|
|
|
$sql = $this->driver->insert($this->config['table_prefix'].$table, array_keys($this->set), array_values($this->set));
|
|
|
|
$this->reset_write();
|
|
|
|
return $this->query($sql);
|
|
}
|
|
|
|
/**
|
|
* Adds an "IN" condition to the where clause
|
|
*
|
|
* @param string Name of the column being examined
|
|
* @param mixed An array or string to match against
|
|
* @param bool Generate a NOT IN clause instead
|
|
* @return Database This Database object.
|
|
*/
|
|
public function in($field, $values, $not = FALSE)
|
|
{
|
|
if (is_array($values))
|
|
{
|
|
$escaped_values = array();
|
|
foreach ($values as $v)
|
|
{
|
|
if (is_numeric($v))
|
|
{
|
|
$escaped_values[] = $v;
|
|
}
|
|
else
|
|
{
|
|
$escaped_values[] = "'".$this->driver->escape_str($v)."'";
|
|
}
|
|
}
|
|
$values = implode(",", $escaped_values);
|
|
}
|
|
|
|
$where = $this->driver->escape_column(((strpos($field,'.') !== FALSE) ? $this->config['table_prefix'] : ''). $field).' '.($not === TRUE ? 'NOT ' : '').'IN ('.$values.')';
|
|
$this->where[] = $this->driver->where($where, '', 'AND ', count($this->where), -1);
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Adds a "NOT IN" condition to the where clause
|
|
*
|
|
* @param string Name of the column being examined
|
|
* @param mixed An array or string to match against
|
|
* @return Database This Database object.
|
|
*/
|
|
public function notin($field, $values)
|
|
{
|
|
return $this->in($field, $values, TRUE);
|
|
}
|
|
|
|
/**
|
|
* Compiles a merge string and runs the query.
|
|
*
|
|
* @param string table name
|
|
* @param array array of key/value pairs to merge
|
|
* @return Database_Result Query result
|
|
*/
|
|
public function merge($table = '', $set = NULL)
|
|
{
|
|
if ( ! is_null($set))
|
|
{
|
|
$this->set($set);
|
|
}
|
|
|
|
if ($this->set == NULL)
|
|
throw new Kohana_Database_Exception('database.must_use_set');
|
|
|
|
if ($table == '')
|
|
{
|
|
if ( ! isset($this->from[0]))
|
|
throw new Kohana_Database_Exception('database.must_use_table');
|
|
|
|
$table = $this->from[0];
|
|
}
|
|
|
|
$sql = $this->driver->merge($this->config['table_prefix'].$table, array_keys($this->set), array_values($this->set));
|
|
|
|
$this->reset_write();
|
|
return $this->query($sql);
|
|
}
|
|
|
|
/**
|
|
* Compiles an update string and runs the query.
|
|
*
|
|
* @param string table name
|
|
* @param array associative array of update values
|
|
* @param array where clause
|
|
* @return Database_Result Query result
|
|
*/
|
|
public function update($table = '', $set = NULL, $where = NULL)
|
|
{
|
|
if ( is_array($set))
|
|
{
|
|
$this->set($set);
|
|
}
|
|
|
|
if ( ! is_null($where))
|
|
{
|
|
$this->where($where);
|
|
}
|
|
|
|
if ($this->set == FALSE)
|
|
throw new Kohana_Database_Exception('database.must_use_set');
|
|
|
|
if ($table == '')
|
|
{
|
|
if ( ! isset($this->from[0]))
|
|
throw new Kohana_Database_Exception('database.must_use_table');
|
|
|
|
$table = $this->from[0];
|
|
}
|
|
|
|
$sql = $this->driver->update($this->config['table_prefix'].$table, $this->set, $this->where);
|
|
|
|
$this->reset_write();
|
|
return $this->query($sql);
|
|
}
|
|
|
|
/**
|
|
* Compiles a delete string and runs the query.
|
|
*
|
|
* @param string table name
|
|
* @param array where clause
|
|
* @return Database_Result Query result
|
|
*/
|
|
public function delete($table = '', $where = NULL)
|
|
{
|
|
if ($table == '')
|
|
{
|
|
if ( ! isset($this->from[0]))
|
|
throw new Kohana_Database_Exception('database.must_use_table');
|
|
|
|
$table = $this->from[0];
|
|
}
|
|
else
|
|
{
|
|
$table = $this->config['table_prefix'].$table;
|
|
}
|
|
|
|
if (! is_null($where))
|
|
{
|
|
$this->where($where);
|
|
}
|
|
|
|
if (count($this->where) < 1)
|
|
throw new Kohana_Database_Exception('database.must_use_where');
|
|
|
|
$sql = $this->driver->delete($table, $this->where);
|
|
|
|
$this->reset_write();
|
|
return $this->query($sql);
|
|
}
|
|
|
|
/**
|
|
* Returns the last query run.
|
|
*
|
|
* @return string SQL
|
|
*/
|
|
public function last_query()
|
|
{
|
|
return $this->last_query;
|
|
}
|
|
|
|
/**
|
|
* Count query records.
|
|
*
|
|
* @param string table name
|
|
* @param array where clause
|
|
* @return integer
|
|
*/
|
|
public function count_records($table = FALSE, $where = NULL)
|
|
{
|
|
if (count($this->from) < 1)
|
|
{
|
|
if ($table == FALSE)
|
|
throw new Kohana_Database_Exception('database.must_use_table');
|
|
|
|
$this->from($table);
|
|
}
|
|
|
|
if ($where !== NULL)
|
|
{
|
|
$this->where($where);
|
|
}
|
|
|
|
$query = $this->select('COUNT(*) AS '.$this->escape_column('records_found'))->get()->result(TRUE);
|
|
|
|
return (int) $query->current()->records_found;
|
|
}
|
|
|
|
/**
|
|
* Resets all private select variables.
|
|
*
|
|
* @return void
|
|
*/
|
|
protected function reset_select()
|
|
{
|
|
$this->select = array();
|
|
$this->from = array();
|
|
$this->join = array();
|
|
$this->where = array();
|
|
$this->orderby = array();
|
|
$this->groupby = array();
|
|
$this->having = array();
|
|
$this->distinct = FALSE;
|
|
$this->limit = FALSE;
|
|
$this->offset = FALSE;
|
|
}
|
|
|
|
/**
|
|
* Resets all private insert and update variables.
|
|
*
|
|
* @return void
|
|
*/
|
|
protected function reset_write()
|
|
{
|
|
$this->set = array();
|
|
$this->from = array();
|
|
$this->where = array();
|
|
}
|
|
|
|
/**
|
|
* Lists all the tables in the current database.
|
|
*
|
|
* @return array
|
|
*/
|
|
public function list_tables()
|
|
{
|
|
$this->link or $this->connect();
|
|
|
|
return $this->driver->list_tables();
|
|
}
|
|
|
|
/**
|
|
* See if a table exists in the database.
|
|
*
|
|
* @param string table name
|
|
* @param boolean True to attach table prefix
|
|
* @return boolean
|
|
*/
|
|
public function table_exists($table_name, $prefix = TRUE)
|
|
{
|
|
if ($prefix)
|
|
return in_array($this->config['table_prefix'].$table_name, $this->list_tables());
|
|
else
|
|
return in_array($table_name, $this->list_tables());
|
|
}
|
|
|
|
/**
|
|
* Combine a SQL statement with the bind values. Used for safe queries.
|
|
*
|
|
* @param string query to bind to the values
|
|
* @param array array of values to bind to the query
|
|
* @return string
|
|
*/
|
|
public function compile_binds($sql, $binds)
|
|
{
|
|
foreach ((array) $binds as $val)
|
|
{
|
|
// If the SQL contains no more bind marks ("?"), we're done.
|
|
if (($next_bind_pos = strpos($sql, '?')) === FALSE)
|
|
break;
|
|
|
|
// Properly escape the bind value.
|
|
$val = $this->driver->escape($val);
|
|
|
|
// Temporarily replace possible bind marks ("?"), in the bind value itself, with a placeholder.
|
|
$val = str_replace('?', '{%B%}', $val);
|
|
|
|
// Replace the first bind mark ("?") with its corresponding value.
|
|
$sql = substr($sql, 0, $next_bind_pos).$val.substr($sql, $next_bind_pos + 1);
|
|
}
|
|
|
|
// Restore placeholders.
|
|
return str_replace('{%B%}', '?', $sql);
|
|
}
|
|
|
|
/**
|
|
* Get the field data for a database table, along with the field's attributes.
|
|
*
|
|
* @param string table name
|
|
* @return array
|
|
*/
|
|
public function field_data($table = '')
|
|
{
|
|
$this->link or $this->connect();
|
|
|
|
return $this->driver->field_data($this->config['table_prefix'].$table);
|
|
}
|
|
|
|
/**
|
|
* Get the field data for a database table, along with the field's attributes.
|
|
*
|
|
* @param string table name
|
|
* @return array
|
|
*/
|
|
public function list_fields($table = '')
|
|
{
|
|
$this->link or $this->connect();
|
|
|
|
return $this->driver->list_fields($this->config['table_prefix'].$table);
|
|
}
|
|
|
|
/**
|
|
* Escapes a value for a query.
|
|
*
|
|
* @param mixed value to escape
|
|
* @return string
|
|
*/
|
|
public function escape($value)
|
|
{
|
|
return $this->driver->escape($value);
|
|
}
|
|
|
|
/**
|
|
* Escapes a string for a query.
|
|
*
|
|
* @param string string to escape
|
|
* @return string
|
|
*/
|
|
public function escape_str($str)
|
|
{
|
|
return $this->driver->escape_str($str);
|
|
}
|
|
|
|
/**
|
|
* Escapes a table name for a query.
|
|
*
|
|
* @param string string to escape
|
|
* @return string
|
|
*/
|
|
public function escape_table($table)
|
|
{
|
|
return $this->driver->escape_table($table);
|
|
}
|
|
|
|
/**
|
|
* Escapes a column name for a query.
|
|
*
|
|
* @param string string to escape
|
|
* @return string
|
|
*/
|
|
public function escape_column($table)
|
|
{
|
|
return $this->driver->escape_column($table);
|
|
}
|
|
|
|
/**
|
|
* Returns table prefix of current configuration.
|
|
*
|
|
* @return string
|
|
*/
|
|
public function table_prefix()
|
|
{
|
|
return $this->config['table_prefix'];
|
|
}
|
|
|
|
/**
|
|
* Clears the query cache.
|
|
*
|
|
* @param string|TRUE clear cache by SQL statement or TRUE for last query
|
|
* @return Database This Database object.
|
|
*/
|
|
public function clear_cache($sql = NULL)
|
|
{
|
|
if ($sql === TRUE)
|
|
{
|
|
$this->driver->clear_cache($this->last_query);
|
|
}
|
|
elseif (is_string($sql))
|
|
{
|
|
$this->driver->clear_cache($sql);
|
|
}
|
|
else
|
|
{
|
|
$this->driver->clear_cache();
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Pushes existing query space onto the query stack. Use push
|
|
* and pop to prevent queries from clashing before they are
|
|
* executed
|
|
*
|
|
* @return Database This Databaes object
|
|
*/
|
|
public function push()
|
|
{
|
|
array_push($this->query_history, array(
|
|
$this->select,
|
|
$this->from,
|
|
$this->join,
|
|
$this->where,
|
|
$this->orderby,
|
|
$this->order,
|
|
$this->groupby,
|
|
$this->having,
|
|
$this->distinct,
|
|
$this->limit,
|
|
$this->offset
|
|
));
|
|
|
|
$this->reset_select();
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Pops from query stack into the current query space.
|
|
*
|
|
* @return Database This Databaes object
|
|
*/
|
|
public function pop()
|
|
{
|
|
if (count($this->query_history) == 0)
|
|
{
|
|
// No history
|
|
return $this;
|
|
}
|
|
|
|
list(
|
|
$this->select,
|
|
$this->from,
|
|
$this->join,
|
|
$this->where,
|
|
$this->orderby,
|
|
$this->order,
|
|
$this->groupby,
|
|
$this->having,
|
|
$this->distinct,
|
|
$this->limit,
|
|
$this->offset
|
|
) = array_pop($this->query_history);
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Count the number of records in the last query, without LIMIT or OFFSET applied.
|
|
*
|
|
* @return integer
|
|
*/
|
|
public function count_last_query()
|
|
{
|
|
if ($sql = $this->last_query())
|
|
{
|
|
if (stripos($sql, 'LIMIT') !== FALSE)
|
|
{
|
|
// Remove LIMIT from the SQL
|
|
$sql = preg_replace('/\sLIMIT\s+[^a-z]+/i', ' ', $sql);
|
|
}
|
|
|
|
if (stripos($sql, 'OFFSET') !== FALSE)
|
|
{
|
|
// Remove OFFSET from the SQL
|
|
$sql = preg_replace('/\sOFFSET\s+\d+/i', '', $sql);
|
|
}
|
|
|
|
// Get the total rows from the last query executed
|
|
$result = $this->query
|
|
(
|
|
'SELECT COUNT(*) AS '.$this->escape_column('total_rows').' '.
|
|
'FROM ('.trim($sql).') AS '.$this->escape_table('counted_results')
|
|
);
|
|
|
|
// Return the total number of rows from the query
|
|
return (int) $result->current()->total_rows;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/**
|
|
* Sets benchmark on or off
|
|
*
|
|
* @author Ondřej Fibich
|
|
* @param boolean $is_on
|
|
*/
|
|
public function set_benchmark($is_on)
|
|
{
|
|
$this->config['benchmark'] = ($is_on === TRUE);
|
|
}
|
|
|
|
} // End Database Class
|
|
|
|
|
|
/**
|
|
* Sets the code for a Database exception.
|
|
*/
|
|
class Kohana_Database_Exception extends Kohana_Exception {
|
|
|
|
protected $code = E_DATABASE_ERROR;
|
|
|
|
} // End Kohana Database Exception
|