111 lines
2.7 KiB
PHP
111 lines
2.7 KiB
PHP
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<?php defined('SYSPATH') OR die('No direct script access.');
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/**
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* Database writer for the config system
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*
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* @package Kohana
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* @category Configuration
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* @author Kohana Team
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* @copyright (c) 2007-2012 Kohana Team
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* @license http://kohanaframework.org/license
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*/
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class Kohana_Config_Database_Writer extends Config_Database_Reader implements Kohana_Config_Writer
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{
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protected $_loaded_keys = array();
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/**
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* Tries to load the specificed configuration group
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*
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* Returns FALSE if group does not exist or an array if it does
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*
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* @param string $group Configuration group
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* @return boolean|array
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*/
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public function load($group)
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{
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$config = parent::load($group);
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if ($config !== FALSE)
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{
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$this->_loaded_keys[$group] = array_combine(array_keys($config), array_keys($config));
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}
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return $config;
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}
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/**
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* Writes the passed config for $group
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*
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* Returns chainable instance on success or throws
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* Kohana_Config_Exception on failure
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*
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* @param string $group The config group
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* @param string $key The config key to write to
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* @param array $config The configuration to write
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* @return boolean
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*/
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public function write($group, $key, $config)
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{
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$config = serialize($config);
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// Check to see if we've loaded the config from the table already
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if (isset($this->_loaded_keys[$group][$key]))
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{
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$this->_update($group, $key, $config);
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}
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else
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{
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// Attempt to run an insert query
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// This may fail if the config key already exists in the table
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// and we don't know about it
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try
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{
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$this->_insert($group, $key, $config);
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}
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catch (Database_Exception $e)
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{
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// Attempt to run an update instead
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$this->_update($group, $key, $config);
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}
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}
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return TRUE;
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}
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/**
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* Insert the config values into the table
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*
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* @param string $group The config group
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* @param string $key The config key to write to
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* @param array $config The serialized configuration to write
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* @return boolean
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*/
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protected function _insert($group, $key, $config)
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{
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DB::insert($this->_table_name, array('group_name', 'config_key', 'config_value'))
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->values(array($group, $key, $config))
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->execute($this->_db_instance);
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return $this;
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}
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/**
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* Update the config values in the table
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*
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* @param string $group The config group
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* @param string $key The config key to write to
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* @param array $config The serialized configuration to write
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* @return boolean
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*/
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protected function _update($group, $key, $config)
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{
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DB::update($this->_table_name)
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->set(array('config_value' => $config))
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->where('group_name', '=', $group)
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->where('config_key', '=', $key)
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->execute($this->_db_instance);
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return $this;
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}
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}
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