<?php

/*
FileArts
Copyright (C) 2007 Peter Goodman, Geoffrey Goodman

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

require_once FA_BASE_DIR . '/database.php';
require_once FA_BASE_DIR . '/validator.php';

require FA_BASE_DIR . '/model/finder.php';
require FA_BASE_DIR . '/model/iterator.php';
require FA_BASE_DIR . '/model/definition.php';
require FA_BASE_DIR . '/model/record.php';
require FA_BASE_DIR . '/model/validation.php';

if (version_compare(phpversion(), '5.0.0', '<')) {
	if (!function_exists('overload')) {
		trigger_error("FARecords depend on the php extension 'overload'", E_USER_ERROR);
	}
	
	require FA_BASE_DIR . '/model/record.php4.php';
	
	//overload('FARecordCommon');
	//overload('FARecord');
} else {
	require FA_BASE_DIR . '/model/record.php5.php';
}

class FAModel {
	var $_dba;
	var $_finders = array();
	var $_overload = FALSE;
	
	function FAModel(&$dba) {
		if (version_compare(phpversion(), '5.0.0', '<') && function_exists('overload')) {
			$this->_overload = TRUE;
		}
		
		$this->_dba = &$dba;
	}
	
	function &getDefinition($model) {
		$class = camelize($model) . "Definition";
		$def = &new $class;
	
		assert(is_a($def, 'FAModelDefinition'));
		
		return $def;
	}
	
	function &getFinder($model) {
		if (isset($this->_finders[$model])) {
			$ret = &$this->_finders[$model];
		} else {
			$filename = FA_MODEL_DIR . "/{$model}_model.php";
			
			if (!is_file($filename) || !is_readable($filename)) {
				trigger_error("No such model: {$table}", E_USER_ERROR);
			}

			require $filename;

			$def = &$this->getDefinition($model);

			if (class_exists($def->getRecordClass())
				&& $def->getRecordClass() != 'FARecord'
				&& $this->_overload) {
				//overload($def->getRecordClass());
			}
		
			$ret = &new FARecordFinder($this->_dba, $def, $this);
			
			$this->_finders[$model] = &$ret;
		}		
		return $ret;
	}
}

?>