2073 行
无行尾
42 KiB
PHP
2073 行
无行尾
42 KiB
PHP
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
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/**
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* CodeIgniter
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*
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* An open source application development framework for PHP 5.1.6 or newer
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*
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* @package CodeIgniter
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* @author ExpressionEngine Dev Team
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* @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
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* @license http://codeigniter.com/user_guide/license.html
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* @link http://codeigniter.com
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* @since Version 1.0
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* @filesource
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*/
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// ------------------------------------------------------------------------
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/**
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* Active Record Class
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*
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* This is the platform-independent base Active Record implementation class.
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*
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* @package CodeIgniter
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* @subpackage Drivers
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* @category Database
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* @author ExpressionEngine Dev Team
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* @link http://codeigniter.com/user_guide/database/
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*/
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class CI_DB_active_record extends CI_DB_driver {
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var $ar_select = array();
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var $ar_distinct = FALSE;
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var $ar_from = array();
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var $ar_join = array();
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var $ar_where = array();
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var $ar_like = array();
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var $ar_groupby = array();
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var $ar_having = array();
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var $ar_keys = array();
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var $ar_limit = FALSE;
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var $ar_offset = FALSE;
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var $ar_order = FALSE;
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var $ar_orderby = array();
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var $ar_set = array();
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var $ar_wherein = array();
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var $ar_aliased_tables = array();
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var $ar_store_array = array();
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// Active Record Caching variables
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var $ar_caching = FALSE;
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var $ar_cache_exists = array();
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var $ar_cache_select = array();
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var $ar_cache_from = array();
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var $ar_cache_join = array();
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var $ar_cache_where = array();
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var $ar_cache_like = array();
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var $ar_cache_groupby = array();
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var $ar_cache_having = array();
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var $ar_cache_orderby = array();
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var $ar_cache_set = array();
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// --------------------------------------------------------------------
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/**
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* Select
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*
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* Generates the SELECT portion of the query
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*
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* @access public
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* @param string
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* @return object
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*/
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function select($select = '*', $escape = NULL)
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{
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// Set the global value if this was sepecified
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if (is_bool($escape))
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{
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$this->_protect_identifiers = $escape;
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}
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if (is_string($select))
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{
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$select = explode(',', $select);
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}
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foreach ($select as $val)
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{
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$val = trim($val);
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if ($val != '')
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{
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$this->ar_select[] = $val;
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if ($this->ar_caching === TRUE)
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{
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$this->ar_cache_select[] = $val;
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$this->ar_cache_exists[] = 'select';
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}
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}
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}
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return $this;
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}
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// --------------------------------------------------------------------
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/**
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* Select Max
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*
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* Generates a SELECT MAX(field) portion of a query
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*
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* @access public
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* @param string the field
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* @param string an alias
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* @return object
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*/
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function select_max($select = '', $alias = '')
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{
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return $this->_max_min_avg_sum($select, $alias, 'MAX');
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}
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// --------------------------------------------------------------------
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/**
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* Select Min
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*
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* Generates a SELECT MIN(field) portion of a query
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*
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* @access public
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* @param string the field
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* @param string an alias
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* @return object
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*/
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function select_min($select = '', $alias = '')
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{
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return $this->_max_min_avg_sum($select, $alias, 'MIN');
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}
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// --------------------------------------------------------------------
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/**
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* Select Average
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*
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* Generates a SELECT AVG(field) portion of a query
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*
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* @access public
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* @param string the field
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* @param string an alias
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* @return object
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*/
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function select_avg($select = '', $alias = '')
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{
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return $this->_max_min_avg_sum($select, $alias, 'AVG');
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}
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// --------------------------------------------------------------------
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/**
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* Select Sum
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*
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* Generates a SELECT SUM(field) portion of a query
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*
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* @access public
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* @param string the field
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* @param string an alias
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* @return object
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*/
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function select_sum($select = '', $alias = '')
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{
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return $this->_max_min_avg_sum($select, $alias, 'SUM');
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}
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// --------------------------------------------------------------------
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/**
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* Processing Function for the four functions above:
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*
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* select_max()
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* select_min()
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* select_avg()
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* select_sum()
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*
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* @access public
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* @param string the field
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* @param string an alias
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* @return object
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*/
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function _max_min_avg_sum($select = '', $alias = '', $type = 'MAX')
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{
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if ( ! is_string($select) OR $select == '')
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{
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$this->display_error('db_invalid_query');
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}
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$type = strtoupper($type);
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if ( ! in_array($type, array('MAX', 'MIN', 'AVG', 'SUM')))
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{
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show_error('Invalid function type: '.$type);
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}
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if ($alias == '')
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{
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$alias = $this->_create_alias_from_table(trim($select));
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}
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$sql = $type.'('.$this->_protect_identifiers(trim($select)).') AS '.$alias;
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$this->ar_select[] = $sql;
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if ($this->ar_caching === TRUE)
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{
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$this->ar_cache_select[] = $sql;
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$this->ar_cache_exists[] = 'select';
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}
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return $this;
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}
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// --------------------------------------------------------------------
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/**
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* Determines the alias name based on the table
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*
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* @access private
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* @param string
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* @return string
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*/
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function _create_alias_from_table($item)
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{
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if (strpos($item, '.') !== FALSE)
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{
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return end(explode('.', $item));
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}
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return $item;
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}
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// --------------------------------------------------------------------
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/**
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* DISTINCT
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*
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* Sets a flag which tells the query string compiler to add DISTINCT
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*
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* @access public
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* @param bool
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* @return object
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*/
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function distinct($val = TRUE)
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{
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$this->ar_distinct = (is_bool($val)) ? $val : TRUE;
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return $this;
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}
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// --------------------------------------------------------------------
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/**
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* From
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*
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* Generates the FROM portion of the query
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*
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* @access public
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* @param mixed can be a string or array
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* @return object
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*/
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function from($from)
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{
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foreach ((array)$from as $val)
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{
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if (strpos($val, ',') !== FALSE)
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{
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foreach (explode(',', $val) as $v)
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{
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$v = trim($v);
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$this->_track_aliases($v);
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$this->ar_from[] = $this->_protect_identifiers($v, TRUE, NULL, FALSE);
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if ($this->ar_caching === TRUE)
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{
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$this->ar_cache_from[] = $this->_protect_identifiers($v, TRUE, NULL, FALSE);
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$this->ar_cache_exists[] = 'from';
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}
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}
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}
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else
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{
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$val = trim($val);
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// Extract any aliases that might exist. We use this information
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// in the _protect_identifiers to know whether to add a table prefix
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$this->_track_aliases($val);
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$this->ar_from[] = $this->_protect_identifiers($val, TRUE, NULL, FALSE);
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if ($this->ar_caching === TRUE)
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{
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$this->ar_cache_from[] = $this->_protect_identifiers($val, TRUE, NULL, FALSE);
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$this->ar_cache_exists[] = 'from';
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}
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}
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}
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return $this;
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}
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// --------------------------------------------------------------------
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/**
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* Join
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*
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* Generates the JOIN portion of the query
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*
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* @access public
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* @param string
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* @param string the join condition
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* @param string the type of join
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* @return object
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*/
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function join($table, $cond, $type = '')
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{
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if ($type != '')
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{
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$type = strtoupper(trim($type));
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if ( ! in_array($type, array('LEFT', 'RIGHT', 'OUTER', 'INNER', 'LEFT OUTER', 'RIGHT OUTER')))
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{
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$type = '';
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}
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else
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{
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$type .= ' ';
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}
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}
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// Extract any aliases that might exist. We use this information
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// in the _protect_identifiers to know whether to add a table prefix
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$this->_track_aliases($table);
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// Strip apart the condition and protect the identifiers
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if (preg_match('/([\w\.]+)([\W\s]+)(.+)/', $cond, $match))
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{
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$match[1] = $this->_protect_identifiers($match[1]);
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$match[3] = $this->_protect_identifiers($match[3]);
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$cond = $match[1].$match[2].$match[3];
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}
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// Assemble the JOIN statement
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$join = $type.'JOIN '.$this->_protect_identifiers($table, TRUE, NULL, FALSE).' ON '.$cond;
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$this->ar_join[] = $join;
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if ($this->ar_caching === TRUE)
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{
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$this->ar_cache_join[] = $join;
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$this->ar_cache_exists[] = 'join';
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}
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return $this;
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}
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// --------------------------------------------------------------------
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/**
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* Where
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*
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* Generates the WHERE portion of the query. Separates
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* multiple calls with AND
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*
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* @access public
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* @param mixed
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* @param mixed
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* @return object
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*/
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function where($key, $value = NULL, $escape = TRUE)
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{
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return $this->_where($key, $value, 'AND ', $escape);
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}
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// --------------------------------------------------------------------
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/**
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* OR Where
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*
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* Generates the WHERE portion of the query. Separates
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* multiple calls with OR
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*
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* @access public
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* @param mixed
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* @param mixed
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* @return object
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*/
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function or_where($key, $value = NULL, $escape = TRUE)
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{
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return $this->_where($key, $value, 'OR ', $escape);
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}
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// --------------------------------------------------------------------
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/**
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* Where
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*
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* Called by where() or orwhere()
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*
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* @access private
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* @param mixed
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* @param mixed
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* @param string
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* @return object
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*/
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function _where($key, $value = NULL, $type = 'AND ', $escape = NULL)
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{
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if ( ! is_array($key))
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{
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$key = array($key => $value);
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}
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// If the escape value was not set will will base it on the global setting
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if ( ! is_bool($escape))
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{
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$escape = $this->_protect_identifiers;
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}
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foreach ($key as $k => $v)
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{
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$prefix = (count($this->ar_where) == 0 AND count($this->ar_cache_where) == 0) ? '' : $type;
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if (is_null($v) && ! $this->_has_operator($k))
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{
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// value appears not to have been set, assign the test to IS NULL
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$k .= ' IS NULL';
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}
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if ( ! is_null($v))
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{
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if ($escape === TRUE)
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{
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$k = $this->_protect_identifiers($k, FALSE, $escape);
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$v = ' '.$this->escape($v);
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}
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if ( ! $this->_has_operator($k))
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{
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$k .= ' =';
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}
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}
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else
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{
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$k = $this->_protect_identifiers($k, FALSE, $escape);
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}
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$this->ar_where[] = $prefix.$k.$v;
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if ($this->ar_caching === TRUE)
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{
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$this->ar_cache_where[] = $prefix.$k.$v;
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$this->ar_cache_exists[] = 'where';
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}
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}
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return $this;
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}
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// --------------------------------------------------------------------
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/**
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* Where_in
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*
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* Generates a WHERE field IN ('item', 'item') SQL query joined with
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* AND if appropriate
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*
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* @access public
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* @param string The field to search
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* @param array The values searched on
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* @return object
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*/
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function where_in($key = NULL, $values = NULL)
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{
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return $this->_where_in($key, $values);
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}
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// --------------------------------------------------------------------
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/**
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* Where_in_or
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*
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* Generates a WHERE field IN ('item', 'item') SQL query joined with
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* OR if appropriate
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*
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* @access public
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* @param string The field to search
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* @param array The values searched on
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* @return object
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*/
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function or_where_in($key = NULL, $values = NULL)
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{
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return $this->_where_in($key, $values, FALSE, 'OR ');
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}
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// --------------------------------------------------------------------
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/**
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* Where_not_in
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*
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* Generates a WHERE field NOT IN ('item', 'item') SQL query joined
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* with AND if appropriate
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*
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* @access public
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* @param string The field to search
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* @param array The values searched on
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* @return object
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*/
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function where_not_in($key = NULL, $values = NULL)
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{
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return $this->_where_in($key, $values, TRUE);
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}
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// --------------------------------------------------------------------
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/**
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* Where_not_in_or
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*
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* Generates a WHERE field NOT IN ('item', 'item') SQL query joined
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* with OR if appropriate
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*
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* @access public
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* @param string The field to search
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* @param array The values searched on
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* @return object
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*/
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function or_where_not_in($key = NULL, $values = NULL)
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{
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return $this->_where_in($key, $values, TRUE, 'OR ');
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}
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// --------------------------------------------------------------------
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/**
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* Where_in
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*
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* Called by where_in, where_in_or, where_not_in, where_not_in_or
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*
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* @access public
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* @param string The field to search
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* @param array The values searched on
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* @param boolean If the statement would be IN or NOT IN
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* @param string
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* @return object
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*/
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function _where_in($key = NULL, $values = NULL, $not = FALSE, $type = 'AND ')
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{
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if ($key === NULL OR $values === NULL)
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{
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return;
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}
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if ( ! is_array($values))
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{
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$values = array($values);
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}
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$not = ($not) ? ' NOT' : '';
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foreach ($values as $value)
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{
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$this->ar_wherein[] = $this->escape($value);
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}
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$prefix = (count($this->ar_where) == 0) ? '' : $type;
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$where_in = $prefix . $this->_protect_identifiers($key) . $not . " IN (" . implode(", ", $this->ar_wherein) . ") ";
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$this->ar_where[] = $where_in;
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if ($this->ar_caching === TRUE)
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{
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$this->ar_cache_where[] = $where_in;
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$this->ar_cache_exists[] = 'where';
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}
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// reset the array for multiple calls
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$this->ar_wherein = array();
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return $this;
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}
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// --------------------------------------------------------------------
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/**
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* Like
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*
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* Generates a %LIKE% portion of the query. Separates
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* multiple calls with AND
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*
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* @access public
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* @param mixed
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* @param mixed
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* @return object
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*/
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function like($field, $match = '', $side = 'both')
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{
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return $this->_like($field, $match, 'AND ', $side);
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}
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// --------------------------------------------------------------------
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/**
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* Not Like
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*
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* Generates a NOT LIKE portion of the query. Separates
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* multiple calls with AND
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*
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* @access public
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* @param mixed
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* @param mixed
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* @return object
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*/
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function not_like($field, $match = '', $side = 'both')
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{
|
|
return $this->_like($field, $match, 'AND ', $side, 'NOT');
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* OR Like
|
|
*
|
|
* Generates a %LIKE% portion of the query. Separates
|
|
* multiple calls with OR
|
|
*
|
|
* @access public
|
|
* @param mixed
|
|
* @param mixed
|
|
* @return object
|
|
*/
|
|
function or_like($field, $match = '', $side = 'both')
|
|
{
|
|
return $this->_like($field, $match, 'OR ', $side);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* OR Not Like
|
|
*
|
|
* Generates a NOT LIKE portion of the query. Separates
|
|
* multiple calls with OR
|
|
*
|
|
* @access public
|
|
* @param mixed
|
|
* @param mixed
|
|
* @return object
|
|
*/
|
|
function or_not_like($field, $match = '', $side = 'both')
|
|
{
|
|
return $this->_like($field, $match, 'OR ', $side, 'NOT');
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Like
|
|
*
|
|
* Called by like() or orlike()
|
|
*
|
|
* @access private
|
|
* @param mixed
|
|
* @param mixed
|
|
* @param string
|
|
* @return object
|
|
*/
|
|
function _like($field, $match = '', $type = 'AND ', $side = 'both', $not = '')
|
|
{
|
|
if ( ! is_array($field))
|
|
{
|
|
$field = array($field => $match);
|
|
}
|
|
|
|
foreach ($field as $k => $v)
|
|
{
|
|
$k = $this->_protect_identifiers($k);
|
|
|
|
$prefix = (count($this->ar_like) == 0) ? '' : $type;
|
|
|
|
$v = $this->escape_like_str($v);
|
|
|
|
if ($side == 'before')
|
|
{
|
|
$like_statement = $prefix." $k $not LIKE '%{$v}'";
|
|
}
|
|
elseif ($side == 'after')
|
|
{
|
|
$like_statement = $prefix." $k $not LIKE '{$v}%'";
|
|
}
|
|
else
|
|
{
|
|
$like_statement = $prefix." $k $not LIKE '%{$v}%'";
|
|
}
|
|
|
|
// some platforms require an escape sequence definition for LIKE wildcards
|
|
if ($this->_like_escape_str != '')
|
|
{
|
|
$like_statement = $like_statement.sprintf($this->_like_escape_str, $this->_like_escape_chr);
|
|
}
|
|
|
|
$this->ar_like[] = $like_statement;
|
|
if ($this->ar_caching === TRUE)
|
|
{
|
|
$this->ar_cache_like[] = $like_statement;
|
|
$this->ar_cache_exists[] = 'like';
|
|
}
|
|
|
|
}
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* GROUP BY
|
|
*
|
|
* @access public
|
|
* @param string
|
|
* @return object
|
|
*/
|
|
function group_by($by)
|
|
{
|
|
if (is_string($by))
|
|
{
|
|
$by = explode(',', $by);
|
|
}
|
|
|
|
foreach ($by as $val)
|
|
{
|
|
$val = trim($val);
|
|
|
|
if ($val != '')
|
|
{
|
|
$this->ar_groupby[] = $this->_protect_identifiers($val);
|
|
|
|
if ($this->ar_caching === TRUE)
|
|
{
|
|
$this->ar_cache_groupby[] = $this->_protect_identifiers($val);
|
|
$this->ar_cache_exists[] = 'groupby';
|
|
}
|
|
}
|
|
}
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Sets the HAVING value
|
|
*
|
|
* Separates multiple calls with AND
|
|
*
|
|
* @access public
|
|
* @param string
|
|
* @param string
|
|
* @return object
|
|
*/
|
|
function having($key, $value = '', $escape = TRUE)
|
|
{
|
|
return $this->_having($key, $value, 'AND ', $escape);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Sets the OR HAVING value
|
|
*
|
|
* Separates multiple calls with OR
|
|
*
|
|
* @access public
|
|
* @param string
|
|
* @param string
|
|
* @return object
|
|
*/
|
|
function or_having($key, $value = '', $escape = TRUE)
|
|
{
|
|
return $this->_having($key, $value, 'OR ', $escape);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Sets the HAVING values
|
|
*
|
|
* Called by having() or or_having()
|
|
*
|
|
* @access private
|
|
* @param string
|
|
* @param string
|
|
* @return object
|
|
*/
|
|
function _having($key, $value = '', $type = 'AND ', $escape = TRUE)
|
|
{
|
|
if ( ! is_array($key))
|
|
{
|
|
$key = array($key => $value);
|
|
}
|
|
|
|
foreach ($key as $k => $v)
|
|
{
|
|
$prefix = (count($this->ar_having) == 0) ? '' : $type;
|
|
|
|
if ($escape === TRUE)
|
|
{
|
|
$k = $this->_protect_identifiers($k);
|
|
}
|
|
|
|
if ( ! $this->_has_operator($k))
|
|
{
|
|
$k .= ' = ';
|
|
}
|
|
|
|
if ($v != '')
|
|
{
|
|
$v = ' '.$this->escape_str($v);
|
|
}
|
|
|
|
$this->ar_having[] = $prefix.$k.$v;
|
|
if ($this->ar_caching === TRUE)
|
|
{
|
|
$this->ar_cache_having[] = $prefix.$k.$v;
|
|
$this->ar_cache_exists[] = 'having';
|
|
}
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Sets the ORDER BY value
|
|
*
|
|
* @access public
|
|
* @param string
|
|
* @param string direction: asc or desc
|
|
* @return object
|
|
*/
|
|
function order_by($orderby, $direction = '')
|
|
{
|
|
if (strtolower($direction) == 'random')
|
|
{
|
|
$orderby = ''; // Random results want or don't need a field name
|
|
$direction = $this->_random_keyword;
|
|
}
|
|
elseif (trim($direction) != '')
|
|
{
|
|
$direction = (in_array(strtoupper(trim($direction)), array('ASC', 'DESC'), TRUE)) ? ' '.$direction : ' ASC';
|
|
}
|
|
|
|
|
|
if (strpos($orderby, ',') !== FALSE)
|
|
{
|
|
$temp = array();
|
|
foreach (explode(',', $orderby) as $part)
|
|
{
|
|
$part = trim($part);
|
|
if ( ! in_array($part, $this->ar_aliased_tables))
|
|
{
|
|
$part = $this->_protect_identifiers(trim($part));
|
|
}
|
|
|
|
$temp[] = $part;
|
|
}
|
|
|
|
$orderby = implode(', ', $temp);
|
|
}
|
|
else if ($direction != $this->_random_keyword)
|
|
{
|
|
$orderby = $this->_protect_identifiers($orderby);
|
|
}
|
|
|
|
$orderby_statement = $orderby.$direction;
|
|
|
|
$this->ar_orderby[] = $orderby_statement;
|
|
if ($this->ar_caching === TRUE)
|
|
{
|
|
$this->ar_cache_orderby[] = $orderby_statement;
|
|
$this->ar_cache_exists[] = 'orderby';
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Sets the LIMIT value
|
|
*
|
|
* @access public
|
|
* @param integer the limit value
|
|
* @param integer the offset value
|
|
* @return object
|
|
*/
|
|
function limit($value, $offset = '')
|
|
{
|
|
$this->ar_limit = $value;
|
|
|
|
if ($offset != '')
|
|
{
|
|
$this->ar_offset = $offset;
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Sets the OFFSET value
|
|
*
|
|
* @access public
|
|
* @param integer the offset value
|
|
* @return object
|
|
*/
|
|
function offset($offset)
|
|
{
|
|
$this->ar_offset = $offset;
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* The "set" function. Allows key/value pairs to be set for inserting or updating
|
|
*
|
|
* @access public
|
|
* @param mixed
|
|
* @param string
|
|
* @param boolean
|
|
* @return object
|
|
*/
|
|
function set($key, $value = '', $escape = TRUE)
|
|
{
|
|
$key = $this->_object_to_array($key);
|
|
|
|
if ( ! is_array($key))
|
|
{
|
|
$key = array($key => $value);
|
|
}
|
|
|
|
foreach ($key as $k => $v)
|
|
{
|
|
if ($escape === FALSE)
|
|
{
|
|
$this->ar_set[$this->_protect_identifiers($k)] = $v;
|
|
}
|
|
else
|
|
{
|
|
$this->ar_set[$this->_protect_identifiers($k, FALSE, TRUE)] = $this->escape($v);
|
|
}
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Get
|
|
*
|
|
* Compiles the select statement based on the other functions called
|
|
* and runs the query
|
|
*
|
|
* @access public
|
|
* @param string the table
|
|
* @param string the limit clause
|
|
* @param string the offset clause
|
|
* @return object
|
|
*/
|
|
function get($table = '', $limit = null, $offset = null)
|
|
{
|
|
if ($table != '')
|
|
{
|
|
$this->_track_aliases($table);
|
|
$this->from($table);
|
|
}
|
|
|
|
if ( ! is_null($limit))
|
|
{
|
|
$this->limit($limit, $offset);
|
|
}
|
|
|
|
$sql = $this->_compile_select();
|
|
|
|
$result = $this->query($sql);
|
|
$this->_reset_select();
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* "Count All Results" query
|
|
*
|
|
* Generates a platform-specific query string that counts all records
|
|
* returned by an Active Record query.
|
|
*
|
|
* @access public
|
|
* @param string
|
|
* @return string
|
|
*/
|
|
function count_all_results($table = '')
|
|
{
|
|
if ($table != '')
|
|
{
|
|
$this->_track_aliases($table);
|
|
$this->from($table);
|
|
}
|
|
|
|
$sql = $this->_compile_select($this->_count_string . $this->_protect_identifiers('numrows'));
|
|
|
|
$query = $this->query($sql);
|
|
$this->_reset_select();
|
|
|
|
if ($query->num_rows() == 0)
|
|
{
|
|
return '0';
|
|
}
|
|
|
|
$row = $query->row();
|
|
return $row->numrows;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Get_Where
|
|
*
|
|
* Allows the where clause, limit and offset to be added directly
|
|
*
|
|
* @access public
|
|
* @param string the where clause
|
|
* @param string the limit clause
|
|
* @param string the offset clause
|
|
* @return object
|
|
*/
|
|
function get_where($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->_compile_select();
|
|
|
|
$result = $this->query($sql);
|
|
$this->_reset_select();
|
|
return $result;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Insert_Batch
|
|
*
|
|
* Compiles batch insert strings and runs the queries
|
|
*
|
|
* @access public
|
|
* @param string the table to retrieve the results from
|
|
* @param array an associative array of insert values
|
|
* @return object
|
|
*/
|
|
function insert_batch($table = '', $set = NULL)
|
|
{
|
|
if ( ! is_null($set))
|
|
{
|
|
$this->set_insert_batch($set);
|
|
}
|
|
|
|
if (count($this->ar_set) == 0)
|
|
{
|
|
if ($this->db_debug)
|
|
{
|
|
//No valid data array. Folds in cases where keys and values did not match up
|
|
return $this->display_error('db_must_use_set');
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
if ($table == '')
|
|
{
|
|
if ( ! isset($this->ar_from[0]))
|
|
{
|
|
if ($this->db_debug)
|
|
{
|
|
return $this->display_error('db_must_set_table');
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
$table = $this->ar_from[0];
|
|
}
|
|
|
|
// Batch this baby
|
|
for ($i = 0, $total = count($this->ar_set); $i < $total; $i = $i + 100)
|
|
{
|
|
|
|
$sql = $this->_insert_batch($this->_protect_identifiers($table, TRUE, NULL, FALSE), $this->ar_keys, array_slice($this->ar_set, $i, 100));
|
|
|
|
//echo $sql;
|
|
|
|
$this->query($sql);
|
|
}
|
|
|
|
$this->_reset_write();
|
|
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* The "set_insert_batch" function. Allows key/value pairs to be set for batch inserts
|
|
*
|
|
* @access public
|
|
* @param mixed
|
|
* @param string
|
|
* @param boolean
|
|
* @return object
|
|
*/
|
|
|
|
function set_insert_batch($key, $value = '', $escape = TRUE)
|
|
{
|
|
$key = $this->_object_to_array_batch($key);
|
|
|
|
if ( ! is_array($key))
|
|
{
|
|
$key = array($key => $value);
|
|
}
|
|
|
|
$keys = array_keys(current($key));
|
|
sort($keys);
|
|
|
|
foreach ($key as $row)
|
|
{
|
|
if (count(array_diff($keys, array_keys($row))) > 0 OR count(array_diff(array_keys($row), $keys)) > 0)
|
|
{
|
|
// batch function above returns an error on an empty array
|
|
$this->ar_set[] = array();
|
|
return;
|
|
}
|
|
|
|
ksort($row); // puts $row in the same order as our keys
|
|
|
|
if ($escape === FALSE)
|
|
{
|
|
$this->ar_set[] = '('.implode(',', $row).')';
|
|
}
|
|
else
|
|
{
|
|
$clean = array();
|
|
|
|
foreach ($row as $value)
|
|
{
|
|
$clean[] = $this->escape($value);
|
|
}
|
|
|
|
$this->ar_set[] = '('.implode(',', $clean).')';
|
|
}
|
|
}
|
|
|
|
foreach ($keys as $k)
|
|
{
|
|
$this->ar_keys[] = $this->_protect_identifiers($k);
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Insert
|
|
*
|
|
* Compiles an insert string and runs the query
|
|
*
|
|
* @access public
|
|
* @param string the table to retrieve the results from
|
|
* @param array an associative array of insert values
|
|
* @return object
|
|
*/
|
|
function insert($table = '', $set = NULL)
|
|
{
|
|
if ( ! is_null($set))
|
|
{
|
|
$this->set($set);
|
|
}
|
|
|
|
if (count($this->ar_set) == 0)
|
|
{
|
|
if ($this->db_debug)
|
|
{
|
|
return $this->display_error('db_must_use_set');
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
if ($table == '')
|
|
{
|
|
if ( ! isset($this->ar_from[0]))
|
|
{
|
|
if ($this->db_debug)
|
|
{
|
|
return $this->display_error('db_must_set_table');
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
$table = $this->ar_from[0];
|
|
}
|
|
|
|
$sql = $this->_insert($this->_protect_identifiers($table, TRUE, NULL, FALSE), array_keys($this->ar_set), array_values($this->ar_set));
|
|
|
|
$this->_reset_write();
|
|
return $this->query($sql);
|
|
}
|
|
|
|
function replace($table = '', $set = NULL)
|
|
{
|
|
if ( ! is_null($set))
|
|
{
|
|
$this->set($set);
|
|
}
|
|
|
|
if (count($this->ar_set) == 0)
|
|
{
|
|
if ($this->db_debug)
|
|
{
|
|
return $this->display_error('db_must_use_set');
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
if ($table == '')
|
|
{
|
|
if ( ! isset($this->ar_from[0]))
|
|
{
|
|
if ($this->db_debug)
|
|
{
|
|
return $this->display_error('db_must_set_table');
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
$table = $this->ar_from[0];
|
|
}
|
|
|
|
$sql = $this->_replace($this->_protect_identifiers($table, TRUE, NULL, FALSE), array_keys($this->ar_set), array_values($this->ar_set));
|
|
|
|
$this->_reset_write();
|
|
return $this->query($sql);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Update
|
|
*
|
|
* Compiles an update string and runs the query
|
|
*
|
|
* @access public
|
|
* @param string the table to retrieve the results from
|
|
* @param array an associative array of update values
|
|
* @param mixed the where clause
|
|
* @return object
|
|
*/
|
|
function update($table = '', $set = NULL, $where = NULL, $limit = NULL)
|
|
{
|
|
// Combine any cached components with the current statements
|
|
$this->_merge_cache();
|
|
|
|
if ( ! is_null($set))
|
|
{
|
|
$this->set($set);
|
|
}
|
|
|
|
if (count($this->ar_set) == 0)
|
|
{
|
|
if ($this->db_debug)
|
|
{
|
|
return $this->display_error('db_must_use_set');
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
if ($table == '')
|
|
{
|
|
if ( ! isset($this->ar_from[0]))
|
|
{
|
|
if ($this->db_debug)
|
|
{
|
|
return $this->display_error('db_must_set_table');
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
$table = $this->ar_from[0];
|
|
}
|
|
|
|
if ($where != NULL)
|
|
{
|
|
$this->where($where);
|
|
}
|
|
|
|
if ($limit != NULL)
|
|
{
|
|
$this->limit($limit);
|
|
}
|
|
|
|
$sql = $this->_update($this->_protect_identifiers($table, TRUE, NULL, FALSE), $this->ar_set, $this->ar_where, $this->ar_orderby, $this->ar_limit);
|
|
|
|
$this->_reset_write();
|
|
return $this->query($sql);
|
|
}
|
|
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Update_Batch
|
|
*
|
|
* Compiles an update string and runs the query
|
|
*
|
|
* @access public
|
|
* @param string the table to retrieve the results from
|
|
* @param array an associative array of update values
|
|
* @param string the where key
|
|
* @return object
|
|
*/
|
|
function update_batch($table = '', $set = NULL, $index = NULL)
|
|
{
|
|
// Combine any cached components with the current statements
|
|
$this->_merge_cache();
|
|
|
|
if (is_null($index))
|
|
{
|
|
if ($this->db_debug)
|
|
{
|
|
return $this->display_error('db_myst_use_index');
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
if ( ! is_null($set))
|
|
{
|
|
$this->set_update_batch($set, $index);
|
|
}
|
|
|
|
if (count($this->ar_set) == 0)
|
|
{
|
|
if ($this->db_debug)
|
|
{
|
|
return $this->display_error('db_must_use_set');
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
if ($table == '')
|
|
{
|
|
if ( ! isset($this->ar_from[0]))
|
|
{
|
|
if ($this->db_debug)
|
|
{
|
|
return $this->display_error('db_must_set_table');
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
$table = $this->ar_from[0];
|
|
}
|
|
|
|
// Batch this baby
|
|
for ($i = 0, $total = count($this->ar_set); $i < $total; $i = $i + 100)
|
|
{
|
|
$sql = $this->_update_batch($this->_protect_identifiers($table, TRUE, NULL, FALSE), array_slice($this->ar_set, $i, 100), $this->_protect_identifiers($index), $this->ar_where);
|
|
|
|
$this->query($sql);
|
|
}
|
|
|
|
$this->_reset_write();
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* The "set_update_batch" function. Allows key/value pairs to be set for batch updating
|
|
*
|
|
* @access public
|
|
* @param array
|
|
* @param string
|
|
* @param boolean
|
|
* @return object
|
|
*/
|
|
|
|
function set_update_batch($key, $index = '', $escape = TRUE)
|
|
{
|
|
$key = $this->_object_to_array_batch($key);
|
|
|
|
if ( ! is_array($key))
|
|
{
|
|
// @todo error
|
|
}
|
|
|
|
foreach ($key as $k => $v)
|
|
{
|
|
$index_set = FALSE;
|
|
$clean = array();
|
|
|
|
foreach ($v as $k2 => $v2)
|
|
{
|
|
if ($k2 == $index)
|
|
{
|
|
$index_set = TRUE;
|
|
}
|
|
else
|
|
{
|
|
$not[] = $k.'-'.$v;
|
|
}
|
|
|
|
if ($escape === FALSE)
|
|
{
|
|
$clean[$this->_protect_identifiers($k2)] = $v2;
|
|
}
|
|
else
|
|
{
|
|
$clean[$this->_protect_identifiers($k2)] = $this->escape($v2);
|
|
}
|
|
}
|
|
|
|
if ($index_set == FALSE)
|
|
{
|
|
return $this->display_error('db_batch_missing_index');
|
|
}
|
|
|
|
$this->ar_set[] = $clean;
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Empty Table
|
|
*
|
|
* Compiles a delete string and runs "DELETE FROM table"
|
|
*
|
|
* @access public
|
|
* @param string the table to empty
|
|
* @return object
|
|
*/
|
|
function empty_table($table = '')
|
|
{
|
|
if ($table == '')
|
|
{
|
|
if ( ! isset($this->ar_from[0]))
|
|
{
|
|
if ($this->db_debug)
|
|
{
|
|
return $this->display_error('db_must_set_table');
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
$table = $this->ar_from[0];
|
|
}
|
|
else
|
|
{
|
|
$table = $this->_protect_identifiers($table, TRUE, NULL, FALSE);
|
|
}
|
|
|
|
$sql = $this->_delete($table);
|
|
|
|
$this->_reset_write();
|
|
|
|
return $this->query($sql);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Truncate
|
|
*
|
|
* Compiles a truncate string and runs the query
|
|
* If the database does not support the truncate() command
|
|
* This function maps to "DELETE FROM table"
|
|
*
|
|
* @access public
|
|
* @param string the table to truncate
|
|
* @return object
|
|
*/
|
|
function truncate($table = '')
|
|
{
|
|
if ($table == '')
|
|
{
|
|
if ( ! isset($this->ar_from[0]))
|
|
{
|
|
if ($this->db_debug)
|
|
{
|
|
return $this->display_error('db_must_set_table');
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
$table = $this->ar_from[0];
|
|
}
|
|
else
|
|
{
|
|
$table = $this->_protect_identifiers($table, TRUE, NULL, FALSE);
|
|
}
|
|
|
|
$sql = $this->_truncate($table);
|
|
|
|
$this->_reset_write();
|
|
|
|
return $this->query($sql);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Delete
|
|
*
|
|
* Compiles a delete string and runs the query
|
|
*
|
|
* @access public
|
|
* @param mixed the table(s) to delete from. String or array
|
|
* @param mixed the where clause
|
|
* @param mixed the limit clause
|
|
* @param boolean
|
|
* @return object
|
|
*/
|
|
function delete($table = '', $where = '', $limit = NULL, $reset_data = TRUE)
|
|
{
|
|
// Combine any cached components with the current statements
|
|
$this->_merge_cache();
|
|
|
|
if ($table == '')
|
|
{
|
|
if ( ! isset($this->ar_from[0]))
|
|
{
|
|
if ($this->db_debug)
|
|
{
|
|
return $this->display_error('db_must_set_table');
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
$table = $this->ar_from[0];
|
|
}
|
|
elseif (is_array($table))
|
|
{
|
|
foreach ($table as $single_table)
|
|
{
|
|
$this->delete($single_table, $where, $limit, FALSE);
|
|
}
|
|
|
|
$this->_reset_write();
|
|
return;
|
|
}
|
|
else
|
|
{
|
|
$table = $this->_protect_identifiers($table, TRUE, NULL, FALSE);
|
|
}
|
|
|
|
if ($where != '')
|
|
{
|
|
$this->where($where);
|
|
}
|
|
|
|
if ($limit != NULL)
|
|
{
|
|
$this->limit($limit);
|
|
}
|
|
|
|
if (count($this->ar_where) == 0 && count($this->ar_wherein) == 0 && count($this->ar_like) == 0)
|
|
{
|
|
if ($this->db_debug)
|
|
{
|
|
return $this->display_error('db_del_must_use_where');
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
$sql = $this->_delete($table, $this->ar_where, $this->ar_like, $this->ar_limit);
|
|
|
|
if ($reset_data)
|
|
{
|
|
$this->_reset_write();
|
|
}
|
|
|
|
return $this->query($sql);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* DB Prefix
|
|
*
|
|
* Prepends a database prefix if one exists in configuration
|
|
*
|
|
* @access public
|
|
* @param string the table
|
|
* @return string
|
|
*/
|
|
function dbprefix($table = '')
|
|
{
|
|
if ($table == '')
|
|
{
|
|
$this->display_error('db_table_name_required');
|
|
}
|
|
|
|
return $this->dbprefix.$table;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Track Aliases
|
|
*
|
|
* Used to track SQL statements written with aliased tables.
|
|
*
|
|
* @access private
|
|
* @param string The table to inspect
|
|
* @return string
|
|
*/
|
|
function _track_aliases($table)
|
|
{
|
|
if (is_array($table))
|
|
{
|
|
foreach ($table as $t)
|
|
{
|
|
$this->_track_aliases($t);
|
|
}
|
|
return;
|
|
}
|
|
|
|
// Does the string contain a comma? If so, we need to separate
|
|
// the string into discreet statements
|
|
if (strpos($table, ',') !== FALSE)
|
|
{
|
|
return $this->_track_aliases(explode(',', $table));
|
|
}
|
|
|
|
// if a table alias is used we can recognize it by a space
|
|
if (strpos($table, " ") !== FALSE)
|
|
{
|
|
// if the alias is written with the AS keyword, remove it
|
|
$table = preg_replace('/ AS /i', ' ', $table);
|
|
|
|
// Grab the alias
|
|
$table = trim(strrchr($table, " "));
|
|
|
|
// Store the alias, if it doesn't already exist
|
|
if ( ! in_array($table, $this->ar_aliased_tables))
|
|
{
|
|
$this->ar_aliased_tables[] = $table;
|
|
}
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Compile the SELECT statement
|
|
*
|
|
* Generates a query string based on which functions were used.
|
|
* Should not be called directly. The get() function calls it.
|
|
*
|
|
* @access private
|
|
* @return string
|
|
*/
|
|
function _compile_select($select_override = FALSE)
|
|
{
|
|
// Combine any cached components with the current statements
|
|
$this->_merge_cache();
|
|
|
|
// ----------------------------------------------------------------
|
|
|
|
// Write the "select" portion of the query
|
|
|
|
if ($select_override !== FALSE)
|
|
{
|
|
$sql = $select_override;
|
|
}
|
|
else
|
|
{
|
|
$sql = ( ! $this->ar_distinct) ? 'SELECT ' : 'SELECT DISTINCT ';
|
|
|
|
if (count($this->ar_select) == 0)
|
|
{
|
|
$sql .= '*';
|
|
}
|
|
else
|
|
{
|
|
// Cycle through the "select" portion of the query and prep each column name.
|
|
// The reason we protect identifiers here rather then in the select() function
|
|
// is because until the user calls the from() function we don't know if there are aliases
|
|
foreach ($this->ar_select as $key => $val)
|
|
{
|
|
$this->ar_select[$key] = $this->_protect_identifiers($val);
|
|
}
|
|
|
|
$sql .= implode(', ', $this->ar_select);
|
|
}
|
|
}
|
|
|
|
// ----------------------------------------------------------------
|
|
|
|
// Write the "FROM" portion of the query
|
|
|
|
if (count($this->ar_from) > 0)
|
|
{
|
|
$sql .= "\nFROM ";
|
|
|
|
$sql .= $this->_from_tables($this->ar_from);
|
|
}
|
|
|
|
// ----------------------------------------------------------------
|
|
|
|
// Write the "JOIN" portion of the query
|
|
|
|
if (count($this->ar_join) > 0)
|
|
{
|
|
$sql .= "\n";
|
|
|
|
$sql .= implode("\n", $this->ar_join);
|
|
}
|
|
|
|
// ----------------------------------------------------------------
|
|
|
|
// Write the "WHERE" portion of the query
|
|
|
|
if (count($this->ar_where) > 0 OR count($this->ar_like) > 0)
|
|
{
|
|
$sql .= "\n";
|
|
|
|
$sql .= "WHERE ";
|
|
}
|
|
|
|
$sql .= implode("\n", $this->ar_where);
|
|
|
|
// ----------------------------------------------------------------
|
|
|
|
// Write the "LIKE" portion of the query
|
|
|
|
if (count($this->ar_like) > 0)
|
|
{
|
|
if (count($this->ar_where) > 0)
|
|
{
|
|
$sql .= "\nAND ";
|
|
}
|
|
|
|
$sql .= implode("\n", $this->ar_like);
|
|
}
|
|
|
|
// ----------------------------------------------------------------
|
|
|
|
// Write the "GROUP BY" portion of the query
|
|
|
|
if (count($this->ar_groupby) > 0)
|
|
{
|
|
$sql .= "\nGROUP BY ";
|
|
|
|
$sql .= implode(', ', $this->ar_groupby);
|
|
}
|
|
|
|
// ----------------------------------------------------------------
|
|
|
|
// Write the "HAVING" portion of the query
|
|
|
|
if (count($this->ar_having) > 0)
|
|
{
|
|
$sql .= "\nHAVING ";
|
|
$sql .= implode("\n", $this->ar_having);
|
|
}
|
|
|
|
// ----------------------------------------------------------------
|
|
|
|
// Write the "ORDER BY" portion of the query
|
|
|
|
if (count($this->ar_orderby) > 0)
|
|
{
|
|
$sql .= "\nORDER BY ";
|
|
$sql .= implode(', ', $this->ar_orderby);
|
|
|
|
if ($this->ar_order !== FALSE)
|
|
{
|
|
$sql .= ($this->ar_order == 'desc') ? ' DESC' : ' ASC';
|
|
}
|
|
}
|
|
|
|
// ----------------------------------------------------------------
|
|
|
|
// Write the "LIMIT" portion of the query
|
|
|
|
if (is_numeric($this->ar_limit))
|
|
{
|
|
$sql .= "\n";
|
|
$sql = $this->_limit($sql, $this->ar_limit, $this->ar_offset);
|
|
}
|
|
|
|
return $sql;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Object to Array
|
|
*
|
|
* Takes an object as input and converts the class variables to array key/vals
|
|
*
|
|
* @access public
|
|
* @param object
|
|
* @return array
|
|
*/
|
|
function _object_to_array($object)
|
|
{
|
|
if ( ! is_object($object))
|
|
{
|
|
return $object;
|
|
}
|
|
|
|
$array = array();
|
|
foreach (get_object_vars($object) as $key => $val)
|
|
{
|
|
// There are some built in keys we need to ignore for this conversion
|
|
if ( ! is_object($val) && ! is_array($val) && $key != '_parent_name')
|
|
{
|
|
$array[$key] = $val;
|
|
}
|
|
}
|
|
|
|
return $array;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Object to Array
|
|
*
|
|
* Takes an object as input and converts the class variables to array key/vals
|
|
*
|
|
* @access public
|
|
* @param object
|
|
* @return array
|
|
*/
|
|
function _object_to_array_batch($object)
|
|
{
|
|
if ( ! is_object($object))
|
|
{
|
|
return $object;
|
|
}
|
|
|
|
$array = array();
|
|
$out = get_object_vars($object);
|
|
$fields = array_keys($out);
|
|
|
|
foreach ($fields as $val)
|
|
{
|
|
// There are some built in keys we need to ignore for this conversion
|
|
if ($val != '_parent_name')
|
|
{
|
|
|
|
$i = 0;
|
|
foreach ($out[$val] as $data)
|
|
{
|
|
$array[$i][$val] = $data;
|
|
$i++;
|
|
}
|
|
}
|
|
}
|
|
|
|
return $array;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Start Cache
|
|
*
|
|
* Starts AR caching
|
|
*
|
|
* @access public
|
|
* @return void
|
|
*/
|
|
function start_cache()
|
|
{
|
|
$this->ar_caching = TRUE;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Stop Cache
|
|
*
|
|
* Stops AR caching
|
|
*
|
|
* @access public
|
|
* @return void
|
|
*/
|
|
function stop_cache()
|
|
{
|
|
$this->ar_caching = FALSE;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Flush Cache
|
|
*
|
|
* Empties the AR cache
|
|
*
|
|
* @access public
|
|
* @return void
|
|
*/
|
|
function flush_cache()
|
|
{
|
|
$this->_reset_run(
|
|
array(
|
|
'ar_cache_select' => array(),
|
|
'ar_cache_from' => array(),
|
|
'ar_cache_join' => array(),
|
|
'ar_cache_where' => array(),
|
|
'ar_cache_like' => array(),
|
|
'ar_cache_groupby' => array(),
|
|
'ar_cache_having' => array(),
|
|
'ar_cache_orderby' => array(),
|
|
'ar_cache_set' => array(),
|
|
'ar_cache_exists' => array()
|
|
)
|
|
);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Merge Cache
|
|
*
|
|
* When called, this function merges any cached AR arrays with
|
|
* locally called ones.
|
|
*
|
|
* @access private
|
|
* @return void
|
|
*/
|
|
function _merge_cache()
|
|
{
|
|
if (count($this->ar_cache_exists) == 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
foreach ($this->ar_cache_exists as $val)
|
|
{
|
|
$ar_variable = 'ar_'.$val;
|
|
$ar_cache_var = 'ar_cache_'.$val;
|
|
|
|
if (count($this->$ar_cache_var) == 0)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
$this->$ar_variable = array_unique(array_merge($this->$ar_cache_var, $this->$ar_variable));
|
|
}
|
|
|
|
// If we are "protecting identifiers" we need to examine the "from"
|
|
// portion of the query to determine if there are any aliases
|
|
if ($this->_protect_identifiers === TRUE AND count($this->ar_cache_from) > 0)
|
|
{
|
|
$this->_track_aliases($this->ar_from);
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Resets the active record values. Called by the get() function
|
|
*
|
|
* @access private
|
|
* @param array An array of fields to reset
|
|
* @return void
|
|
*/
|
|
function _reset_run($ar_reset_items)
|
|
{
|
|
foreach ($ar_reset_items as $item => $default_value)
|
|
{
|
|
if ( ! in_array($item, $this->ar_store_array))
|
|
{
|
|
$this->$item = $default_value;
|
|
}
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Resets the active record values. Called by the get() function
|
|
*
|
|
* @access private
|
|
* @return void
|
|
*/
|
|
function _reset_select()
|
|
{
|
|
$ar_reset_items = array(
|
|
'ar_select' => array(),
|
|
'ar_from' => array(),
|
|
'ar_join' => array(),
|
|
'ar_where' => array(),
|
|
'ar_like' => array(),
|
|
'ar_groupby' => array(),
|
|
'ar_having' => array(),
|
|
'ar_orderby' => array(),
|
|
'ar_wherein' => array(),
|
|
'ar_aliased_tables' => array(),
|
|
'ar_distinct' => FALSE,
|
|
'ar_limit' => FALSE,
|
|
'ar_offset' => FALSE,
|
|
'ar_order' => FALSE,
|
|
);
|
|
|
|
$this->_reset_run($ar_reset_items);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Resets the active record "write" values.
|
|
*
|
|
* Called by the insert() update() insert_batch() update_batch() and delete() functions
|
|
*
|
|
* @access private
|
|
* @return void
|
|
*/
|
|
function _reset_write()
|
|
{
|
|
$ar_reset_items = array(
|
|
'ar_set' => array(),
|
|
'ar_from' => array(),
|
|
'ar_where' => array(),
|
|
'ar_like' => array(),
|
|
'ar_orderby' => array(),
|
|
'ar_keys' => array(),
|
|
'ar_limit' => FALSE,
|
|
'ar_order' => FALSE
|
|
);
|
|
|
|
$this->_reset_run($ar_reset_items);
|
|
}
|
|
|
|
}
|
|
|
|
/* End of file DB_active_rec.php */
|
|
/* Location: ./system/database/DB_active_rec.php */ |