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<?php
/**
 * Active Record implementation. Superset of Zend Framework's.
 *
 * This file is part of ADOdb, a Database Abstraction Layer library for PHP.
 *
 * @package ADOdb
 * @link https://adodb.org Project's web site and documentation
 * @link https://github.com/ADOdb/ADOdb Source code and issue tracker
 *
 * The ADOdb Library is dual-licensed, released under both the BSD 3-Clause
 * and the GNU Lesser General Public Licence (LGPL) v2.1 or, at your option,
 * any later version. This means you can use it in proprietary products.
 * See the LICENSE.md file distributed with this source code for details.
 * @license BSD-3-Clause
 * @license LGPL-2.1-or-later
 *
 * @copyright 2000-2013 John Lim
 * @copyright 2014 Damien Regad, Mark Newnham and the ADOdb community
 */

include_once(ADODB_DIR.'/adodb-lib.inc.php');

global $_ADODB_ACTIVE_DBS;
global $ADODB_ACTIVE_CACHESECS; // set to true to enable caching of metadata such as field info
global $ACTIVE_RECORD_SAFETY; // set to false to disable safety checks
global $ADODB_ACTIVE_DEFVALS; // use default values of table definition when creating new active record.

// array of ADODB_Active_DB's, indexed by ADODB_Active_Record->_dbat
$_ADODB_ACTIVE_DBS = array();
$ACTIVE_RECORD_SAFETY = true;
$ADODB_ACTIVE_DEFVALS = false;
$ADODB_ACTIVE_CACHESECS = 0;

class ADODB_Active_DB {
        var $db; // ADOConnection
        var $tables; // assoc array of ADODB_Active_Table objects, indexed by tablename
}

class ADODB_Active_Table {
        var $name; // table name
        var $flds; // assoc array of adofieldobjs, indexed by fieldname
        var $keys; // assoc array of primary keys, indexed by fieldname
        var $_created; // only used when stored as a cached file
        var $_belongsTo = array();
        var $_hasMany = array();
}

// $db = database connection
// $index = name of index - can be associative, for an example see
//    PHPLens Issue No: 17790
// returns index into $_ADODB_ACTIVE_DBS
function ADODB_SetDatabaseAdapter(&$db, $index=false)
{
        global $_ADODB_ACTIVE_DBS;

        foreach($_ADODB_ACTIVE_DBS as $k => $d) {
                if($d->db === $db) {
                        return $k;
                }
        }

        $obj = new ADODB_Active_DB();
        $obj->db = $db;
        $obj->tables = array();

        if ($index == false) {
                $index = sizeof($_ADODB_ACTIVE_DBS);
        }

        $_ADODB_ACTIVE_DBS[$index] = $obj;

        return sizeof($_ADODB_ACTIVE_DBS)-1;
}


class ADODB_Active_Record {
        static $_changeNames = true; // dynamically pluralize table names

        /** @var bool|string Allows override of global $ADODB_QUOTE_FIELDNAMES */
        public $_quoteNames;

        static $_foreignSuffix = '_id'; //
        var $_dbat; // associative index pointing to ADODB_Active_DB eg. $ADODB_Active_DBS[_dbat]
        var $_table; // tablename, if set in class definition then use it as table name
        var $_tableat; // associative index pointing to ADODB_Active_Table, eg $ADODB_Active_DBS[_dbat]->tables[$this->_tableat]
        var $_where; // where clause set in Load()
        var $_saved = false; // indicates whether data is already inserted.
        var $_lasterr = false; // last error message
        var $_original = false; // the original values loaded or inserted, refreshed on update

        var $foreignName; // CFR: class name when in a relationship

        var $lockMode = ' for update '; // you might want to change to

        static function UseDefaultValues($bool=null)
        {
        global $ADODB_ACTIVE_DEFVALS;
                if (isset($bool)) {
                        $ADODB_ACTIVE_DEFVALS = $bool;
                }
                return $ADODB_ACTIVE_DEFVALS;
        }

        // should be static
        static function SetDatabaseAdapter(&$db, $index=false)
        {
                return ADODB_SetDatabaseAdapter($db, $index);
        }


        public function __set($name, $value)
        {
                $name = str_replace(' ', '_', $name);
                $this->$name = $value;
        }

        // php5 constructor
        function __construct($table = false, $pkeyarr=false, $db=false)
        {
                global $_ADODB_ACTIVE_DBS, $ADODB_QUOTE_FIELDNAMES;

                // Set the local override for field quoting, only if not defined yet
                if (!isset($this->_quoteNames)) {
                        $this->_quoteNames = $ADODB_QUOTE_FIELDNAMES;
                }

                if ($db == false && is_object($pkeyarr)) {
                        $db = $pkeyarr;
                        $pkeyarr = false;
                }

                if (!$table) {
                        if (!empty($this->_table)) {
                                $table = $this->_table;
                        }
                        else $table = $this->_pluralize(get_class($this));
                }
                $this->foreignName = strtolower(get_class($this)); // CFR: default foreign name
                if ($db) {
                        $this->_dbat = ADODB_Active_Record::SetDatabaseAdapter($db);
                } else if (!isset($this->_dbat)) {
                        if (sizeof($_ADODB_ACTIVE_DBS) == 0) {
                                $this->Error(
                                        "No database connection set; use ADOdb_Active_Record::SetDatabaseAdapter(\$db)",
                                        'ADODB_Active_Record::__constructor'
                                );
                        }
                        end($_ADODB_ACTIVE_DBS);
                        $this->_dbat = key($_ADODB_ACTIVE_DBS);
                }

                $this->_table = $table;
                $this->_tableat = $table; # reserved for setting the assoc value to a non-table name, eg. the sql string in future

                $this->UpdateActiveTable($pkeyarr);
        }

        function __wakeup()
        {
                $class = get_class($this);
                new $class;
        }

        function _pluralize($table)
        {
                if (!ADODB_Active_Record::$_changeNames) {
                        return $table;
                }

                $ut = strtoupper($table);
                $len = strlen($table);
                $lastc = $ut[$len-1];
                $lastc2 = substr($ut,$len-2);
                switch ($lastc) {
                case 'S':
                        return $table.'es';
                case 'Y':
                        return substr($table,0,$len-1).'ies';
                case 'X':
                        return $table.'es';
                case 'H':
                        if ($lastc2 == 'CH' || $lastc2 == 'SH') {
                                return $table.'es';
                        }
                default:
                        return $table.'s';
                }
        }

        // CFR Lamest singular inflector ever - @todo Make it real!
        // Note: There is an assumption here...and it is that the argument's length >= 4
        function _singularize($tables)
        {

                if (!ADODB_Active_Record::$_changeNames) {
                        return $table;
                }

                $ut = strtoupper($tables);
                $len = strlen($tables);
                if($ut[$len-1] != 'S') {
                        return $tables; // I know...forget oxen
                }
                if($ut[$len-2] != 'E') {
                        return substr($tables, 0, $len-1);
                }
                switch($ut[$len-3]) {
                        case 'S':
                        case 'X':
                                return substr($tables, 0, $len-2);
                        case 'I':
                                return substr($tables, 0, $len-3) . 'y';
                        case 'H';
                                if($ut[$len-4] == 'C' || $ut[$len-4] == 'S') {
                                        return substr($tables, 0, $len-2);
                                }
                        default:
                                return substr($tables, 0, $len-1); // ?
                }
        }

        function hasMany($foreignRef, $foreignKey = false, $foreignClass = 'ADODB_Active_Record')
        {
                $ar = new $foreignClass($foreignRef);
                $ar->foreignName = $foreignRef;
                $ar->UpdateActiveTable();
                $ar->foreignKey = ($foreignKey) ? $foreignKey : $foreignRef.ADODB_Active_Record::$_foreignSuffix;
                $table =& $this->TableInfo();
                $table->_hasMany[$foreignRef] = $ar;
        #       $this->$foreignRef = $this->_hasMany[$foreignRef]; // WATCHME Removed assignment by ref. to please __get()
        }

        // use when you don't want ADOdb to auto-pluralize tablename
        static function TableHasMany($table, $foreignRef, $foreignKey = false, $foreignClass = 'ADODB_Active_Record')
        {
                $ar = new ADODB_Active_Record($table);
                $ar->hasMany($foreignRef, $foreignKey, $foreignClass);
        }

        // use when you don't want ADOdb to auto-pluralize tablename
        static function TableKeyHasMany($table, $tablePKey, $foreignRef, $foreignKey = false, $foreignClass = 'ADODB_Active_Record')
        {
                if (!is_array($tablePKey)) {
                        $tablePKey = array($tablePKey);
                }
                $ar = new ADODB_Active_Record($table,$tablePKey);
                $ar->hasMany($foreignRef, $foreignKey, $foreignClass);
        }


        // use when you want ADOdb to auto-pluralize tablename for you. Note that the class must already be defined.
        // e.g. class Person will generate relationship for table Persons
        static function ClassHasMany($parentclass, $foreignRef, $foreignKey = false, $foreignClass = 'ADODB_Active_Record')
        {
                $ar = new $parentclass();
                $ar->hasMany($foreignRef, $foreignKey, $foreignClass);
        }


        function belongsTo($foreignRef,$foreignKey=false, $parentKey='', $parentClass = 'ADODB_Active_Record')
        {
                global $inflector;

                $ar = new $parentClass($this->_pluralize($foreignRef));
                $ar->foreignName = $foreignRef;
                $ar->parentKey = $parentKey;
                $ar->UpdateActiveTable();
                $ar->foreignKey = ($foreignKey) ? $foreignKey : $foreignRef.ADODB_Active_Record::$_foreignSuffix;

                $table =& $this->TableInfo();
                $table->_belongsTo[$foreignRef] = $ar;
        #       $this->$foreignRef = $this->_belongsTo[$foreignRef];
        }

        static function ClassBelongsTo($class, $foreignRef, $foreignKey=false, $parentKey='', $parentClass = 'ADODB_Active_Record')
        {
                $ar = new $class();
                $ar->belongsTo($foreignRef, $foreignKey, $parentKey, $parentClass);
        }

        static function TableBelongsTo($table, $foreignRef, $foreignKey=false, $parentKey='', $parentClass = 'ADODB_Active_Record')
        {
                $ar = new ADODB_Active_Record($table);
                $ar->belongsTo($foreignRef, $foreignKey, $parentKey, $parentClass);
        }

        static function TableKeyBelongsTo($table, $tablePKey, $foreignRef, $foreignKey=false, $parentKey='', $parentClass = 'ADODB_Active_Record')
        {
                if (!is_array($tablePKey)) {
                        $tablePKey = array($tablePKey);
                }
                $ar = new ADODB_Active_Record($table, $tablePKey);
                $ar->belongsTo($foreignRef, $foreignKey, $parentKey, $parentClass);
        }


        /**
         * __get Access properties - used for lazy loading
         *
         * @param mixed $name
         * @access protected
         * @return mixed
         */
         function __get($name)
        {
                return $this->LoadRelations($name, '', -1, -1);
        }

        /**
         * @param string $name
         * @param string $whereOrderBy : eg. ' AND field1 = value ORDER BY field2'
         * @param offset
         * @param limit
         * @return mixed
         */
        function LoadRelations($name, $whereOrderBy='', $offset=-1,$limit=-1)
        {
                $extras = array();
                $table = $this->TableInfo();
                if ($limit >= 0) {
                        $extras['limit'] = $limit;
                }
                if ($offset >= 0) {
                        $extras['offset'] = $offset;
                }

                if (strlen($whereOrderBy)) {
                        if (!preg_match('/^[ \n\r]*AND/i', $whereOrderBy)) {
                                if (!preg_match('/^[ \n\r]*ORDER[ \n\r]/i', $whereOrderBy)) {
                                        $whereOrderBy = 'AND ' . $whereOrderBy;
                                }
                        }
                }

                if(!empty($table->_belongsTo[$name])) {
                        $obj = $table->_belongsTo[$name];
                        $columnName = $obj->foreignKey;
                        if(empty($this->$columnName)) {
                                $this->$name = null;
                        }
                        else {
                                if ($obj->parentKey) {
                                        $key = $obj->parentKey;
                                }
                                else {
                                        $key = reset($table->keys);
                                }

                                $arrayOfOne = $obj->Find($key.'='.$this->$columnName.' '.$whereOrderBy,false,false,$extras);
                                if ($arrayOfOne) {
                                        $this->$name = $arrayOfOne[0];
                                        return $arrayOfOne[0];
                                }
                        }
                }
                if(!empty($table->_hasMany[$name])) {
                        $obj = $table->_hasMany[$name];
                        $key = reset($table->keys);
                        $id = @$this->$key;
                        if (!is_numeric($id)) {
                                $db = $this->DB();
                                $id = $db->qstr($id);
                        }
                        $objs = $obj->Find($obj->foreignKey.'='.$id. ' '.$whereOrderBy,false,false,$extras);
                        if (!$objs) {
                                $objs = array();
                        }
                        $this->$name = $objs;
                        return $objs;
                }

                return array();
        }
        //////////////////////////////////

        // update metadata
        function UpdateActiveTable($pkeys=false,$forceUpdate=false)
        {
        global $_ADODB_ACTIVE_DBS , $ADODB_CACHE_DIR, $ADODB_ACTIVE_CACHESECS;
        global $ADODB_ACTIVE_DEFVALS,$ADODB_FETCH_MODE;

                $activedb = $_ADODB_ACTIVE_DBS[$this->_dbat];

                $table = $this->_table;
                $tables = $activedb->tables;
                $tableat = $this->_tableat;
                if (!$forceUpdate && !empty($tables[$tableat])) {

                        $acttab = $tables[$tableat];
                        foreach($acttab->flds as $name => $fld) {
                                if ($ADODB_ACTIVE_DEFVALS && isset($fld->default_value)) {
                                        $this->$name = $fld->default_value;
                                }
                                else {
                                        $this->$name = null;
                                }
                        }
                        return;
                }
                $db = $activedb->db;
                $fname = $ADODB_CACHE_DIR . '/adodb_' . $db->databaseType . '_active_'. $table . '.cache';
                if (!$forceUpdate && $ADODB_ACTIVE_CACHESECS && $ADODB_CACHE_DIR && file_exists($fname)) {
                        $fp = fopen($fname,'r');
                        @flock($fp, LOCK_SH);
                        $acttab = unserialize(fread($fp,100000));
                        fclose($fp);
                        if ($acttab->_created + $ADODB_ACTIVE_CACHESECS - (abs(rand()) % 16) > time()) {
                                // abs(rand()) randomizes deletion, reducing contention to delete/refresh file
                                // ideally, you should cache at least 32 secs

                                foreach($acttab->flds as $name => $fld) {
                                        if ($ADODB_ACTIVE_DEFVALS && isset($fld->default_value)) {
                                                $this->$name = $fld->default_value;
                                        }
                                        else {
                                                $this->$name = null;
                                        }
                                }

                                $activedb->tables[$table] = $acttab;

                                //if ($db->debug) ADOConnection::outp("Reading cached active record file: $fname");
                                return;
                        } else if ($db->debug) {
                                ADOConnection::outp("Refreshing cached active record file: $fname");
                        }
                }
                $activetab = new ADODB_Active_Table();
                $activetab->name = $table;

                $save = $ADODB_FETCH_MODE;
                $ADODB_FETCH_MODE = ADODB_FETCH_ASSOC;
                if ($db->fetchMode !== false) {
                        $savem = $db->SetFetchMode(false);
                }

                $cols = $db->MetaColumns($table);

                if (isset($savem)) {
                        $db->SetFetchMode($savem);
                }
                $ADODB_FETCH_MODE = $save;

                if (!$cols) {
                        $this->Error("Invalid table name: $table",'UpdateActiveTable');
                        return false;
                }
                $fld = reset($cols);
                if (!$pkeys) {
                        if (isset($fld->primary_key)) {
                                $pkeys = array();
                                foreach($cols as $name => $fld) {
                                        if (!empty($fld->primary_key)) {
                                                $pkeys[] = $name;
                                        }
                                }
                        } else
                                $pkeys = $this->GetPrimaryKeys($db, $table);
                }
                if (empty($pkeys)) {
                        $this->Error("No primary key found for table $table",'UpdateActiveTable');
                        return false;
                }

                $attr = array();
                $keys = array();

                switch (ADODB_ASSOC_CASE) {
                case ADODB_ASSOC_CASE_LOWER:
                        foreach($cols as $name => $fldobj) {
                                $name = strtolower($name);
                                if ($ADODB_ACTIVE_DEFVALS && isset($fldobj->default_value)) {
                                        $this->$name = $fldobj->default_value;
                                }
                                else {
                                        $this->$name = null;
                                }
                                $attr[$name] = $fldobj;
                        }
                        foreach($pkeys as $k => $name) {
                                $keys[strtolower($name)] = strtolower($name);
                        }
                        break;

                case ADODB_ASSOC_CASE_UPPER:
                        foreach($cols as $name => $fldobj) {
                                $name = strtoupper($name);

                                if ($ADODB_ACTIVE_DEFVALS && isset($fldobj->default_value)) {
                                        $this->$name = $fldobj->default_value;
                                }
                                else {
                                        $this->$name = null;
                                }
                                $attr[$name] = $fldobj;
                        }

                        foreach($pkeys as $k => $name) {
                                $keys[strtoupper($name)] = strtoupper($name);
                        }
                        break;
                default:
                        foreach($cols as $fldobj) {
                                $name = $fldobj->name;

                                if ($ADODB_ACTIVE_DEFVALS && isset($fldobj->default_value)) {
                                        $this->$name = $fldobj->default_value;
                                }
                                else {
                                        $this->$name = null;
                                }
                                $attr[$name] = $fldobj;
                        }
                        foreach($pkeys as $k => $name) {
                                $keys[$name] = $cols[strtoupper($name)]->name;
                        }
                        break;
                }

                $activetab->keys = $keys;
                $activetab->flds = $attr;

                if ($ADODB_ACTIVE_CACHESECS && $ADODB_CACHE_DIR) {
                        $activetab->_created = time();
                        $s = serialize($activetab);
                        if (!function_exists('adodb_write_file')) {
                                include_once(ADODB_DIR.'/adodb-csvlib.inc.php');
                        }
                        adodb_write_file($fname,$s);
                }
                if (isset($activedb->tables[$table])) {
                        $oldtab = $activedb->tables[$table];

                        if ($oldtab) {
                                $activetab->_belongsTo = $oldtab->_belongsTo;
                                $activetab->_hasMany = $oldtab->_hasMany;
                        }
                }
                $activedb->tables[$table] = $activetab;
        }

        function GetPrimaryKeys(&$db, $table)
        {
                return $db->MetaPrimaryKeys($table);
        }

        // error handler for both PHP4+5.
        function Error($err,$fn)
        {
        global $_ADODB_ACTIVE_DBS;

                $fn = get_class($this).'::'.$fn;
                $this->_lasterr = $fn.': '.$err;

                if ($this->_dbat < 0) {
                        $db = false;
                }
                else {
                        $activedb = $_ADODB_ACTIVE_DBS[$this->_dbat];
                        $db = $activedb->db;
                }

                if (function_exists('adodb_throw')) {
                        if (!$db) {
                                adodb_throw('ADOdb_Active_Record', $fn, -1, $err, 0, 0, false);
                        }
                        else {
                                adodb_throw($db->databaseType, $fn, -1, $err, 0, 0, $db);
                        }
                } else {
                        if (!$db || $db->debug) {
                                ADOConnection::outp($this->_lasterr);
                        }
                }

        }

        // return last error message
        function ErrorMsg()
        {
                if (!function_exists('adodb_throw')) {
                        if ($this->_dbat < 0) {
                                $db = false;
                        }
                        else {
                                $db = $this->DB();
                        }

                        // last error could be database error too
                        if ($db && $db->ErrorMsg()) {
                                return $db->ErrorMsg();
                        }
                }
                return $this->_lasterr;
        }

        function ErrorNo()
        {
                if ($this->_dbat < 0) {
                        return -9999; // no database connection...
                }
                $db = $this->DB();

                return (int) $db->ErrorNo();
        }


        // retrieve ADOConnection from _ADODB_Active_DBs
        function DB()
        {
        global $_ADODB_ACTIVE_DBS;

                if ($this->_dbat < 0) {
                        $false = false;
                        $this->Error("No database connection set: use ADOdb_Active_Record::SetDatabaseAdaptor(\$db)", "DB");
                        return $false;
                }
                $activedb = $_ADODB_ACTIVE_DBS[$this->_dbat];
                $db = $activedb->db;
                return $db;
        }

        // retrieve ADODB_Active_Table
        function &TableInfo()
        {
        global $_ADODB_ACTIVE_DBS;
                $activedb = $_ADODB_ACTIVE_DBS[$this->_dbat];
                $table = $activedb->tables[$this->_tableat];
                return $table;
        }


        // I have an ON INSERT trigger on a table that sets other columns in the table.
        // So, I find that for myTable, I want to reload an active record after saving it. -- Malcolm Cook
        function Reload()
        {
                $db = $this->DB();
                if (!$db) {
                        return false;
                }
                $table = $this->TableInfo();
                $where = $this->GenWhere($db, $table);
                return($this->Load($where));
        }


        // set a numeric array (using natural table field ordering) as object properties
        function Set(&$row)
        {
        global $ACTIVE_RECORD_SAFETY;

                $db = $this->DB();

                if (!$row) {
                        $this->_saved = false;
                        return false;
                }

                $this->_saved = true;

                $table = $this->TableInfo();
                if ($ACTIVE_RECORD_SAFETY && sizeof($table->flds) != sizeof($row)) {
                        # <AP>
                        $bad_size = TRUE;
                        if (sizeof($row) == 2 * sizeof($table->flds)) {
                                // Only keep string keys
                                $keys = array_filter(array_keys($row), 'is_string');
                                if (sizeof($keys) == sizeof($table->flds)) {
                                        $bad_size = FALSE;
                                }
                        }
                        if ($bad_size) {
                        $this->Error("Table structure of $this->_table has changed","Load");
                        return false;
                }
                        # </AP>
                }
                else
                        $keys = array_keys($row);

                # <AP>
                reset($keys);
                $this->_original = array();
                foreach($table->flds as $name=>$fld) {
                        $value = $row[current($keys)];
                        $this->$name = $value;
                        $this->_original[] = $value;
                        next($keys);
                }

                # </AP>
                return true;
        }

        // get last inserted id for INSERT
        function LastInsertID(&$db,$fieldname)
        {
                if ($db->hasInsertID) {
                        $val = $db->Insert_ID($this->_table,$fieldname);
                }
                else {
                        $val = false;
                }

                if (is_null($val) || $val === false)
                {
                        $SQL = sprintf("SELECT MAX(%s) FROM %s",
                                                   $this->nameQuoter($db,$fieldname),
                                                   $this->nameQuoter($db,$this->_table)
                                                   );
                        // this might not work reliably in multi-user environment
                        return $db->GetOne($SQL);
                }
                return $val;
        }

        // quote data in where clause
        function doquote(&$db, $val,$t)
        {
                switch($t) {
                case 'L':
                        if (strpos($db->databaseType,'postgres') !== false) {
                                return $db->qstr($val);
                        }
                case 'D':
                case 'T':
                        if (empty($val)) {
                                return 'null';
                        }
                case 'B':
                case 'N':
                case 'C':
                case 'X':
                        if (is_null($val)) {
                                return 'null';
                        }

                        if (strlen($val)>0 &&
                                (strncmp($val,"'",1) != 0 || substr($val,strlen($val)-1,1) != "'")
                        ) {
                                return $db->qstr($val);
                                break;
                        }
                default:
                        return $val;
                        break;
                }
        }

        // generate where clause for an UPDATE/SELECT
        function GenWhere(&$db, &$table)
        {
                $keys = $table->keys;
                $parr = array();

                foreach($keys as $k) {
                        $f = $table->flds[$k];
                        if ($f) {
                                $columnName = $this->nameQuoter($db,$k);
                                $parr[] = $columnName.' = '.$this->doquote($db,$this->$k,$db->MetaType($f->type));
                        }
                }
                return implode(' AND ', $parr);
        }


        function _QName($n,$db=false)
        {
                if (!ADODB_Active_Record::$_quoteNames) {
                        return $n;
                }
                if (!$db) {
                        $db = $this->DB();
                        if (!$db) {
                                return false;
                        }
                }
                return $db->nameQuote.$n.$db->nameQuote;
        }

        //------------------------------------------------------------ Public functions below

        function Load($where=null,$bindarr=false, $lock = false)
        {
                global $ADODB_FETCH_MODE;

                $db = $this->DB();
                if (!$db) {
                        return false;
                }
                $this->_where = $where;

                $save = $ADODB_FETCH_MODE;
                $ADODB_FETCH_MODE = ADODB_FETCH_NUM;
                if ($db->fetchMode !== false) {
                        $savem = $db->SetFetchMode(false);
                }

                $qry = sprintf("SELECT * FROM %s",
                                           $this->nameQuoter($db,$this->_table)
                                           );

                if($where) {
                        $qry .= ' WHERE '.$where;
                }
                if ($lock) {
                        $qry .= $this->lockMode;
                }

                $row = $db->GetRow($qry,$bindarr);

                if (isset($savem)) {
                        $db->SetFetchMode($savem);
                }
                $ADODB_FETCH_MODE = $save;

                return $this->Set($row);
        }

        function LoadLocked($where=null, $bindarr=false)
        {
                $this->Load($where,$bindarr,true);
        }

        # useful for multiple record inserts
        # see PHPLens Issue No: 17795
        function Reset()
        {
                $this->_where=null;
                $this->_saved = false;
                $this->_lasterr = false;
                $this->_original = false;
                $vars=get_object_vars($this);
                foreach($vars as $k=>$v){
                        if(substr($k,0,1)!=='_'){
                                $this->{$k}=null;
                        }
                }
                $this->foreignName=strtolower(get_class($this));
                return true;
        }

        // false on error
        function Save()
        {
                if ($this->_saved) {
                        $ok = $this->Update();
                }
                else {
                        $ok = $this->Insert();
                }

                return $ok;
        }


        // false on error
        function Insert()
        {
                $db = $this->DB();
                if (!$db) {
                        return false;
                }
                $cnt = 0;
                $table = $this->TableInfo();

                $valarr = array();
                $names = array();
                $valstr = array();

                foreach($table->flds as $name=>$fld) {
                        $val = $this->$name;
                        if(!is_array($val) || !is_null($val) || !array_key_exists($name, $table->keys)) {
                                $valarr[] = $val;
                                $names[] = $this->nameQuoter($db,$name);
                                $valstr[] = $db->Param($cnt);
                                $cnt += 1;
                        }
                }

                if (empty($names)){
                        foreach($table->flds as $name=>$fld) {
                                $valarr[] = null;
                                $names[] = $this->nameQuoter($db,$name);
                                $valstr[] = $db->Param($cnt);
                                $cnt += 1;
                        }
                }

                $tableName = $this->nameQuoter($db,$this->_table);
                $sql = sprintf('INSERT INTO %s (%s) VALUES (%s)',
                                           $tableName,
                                           implode(',',$names),
                                           implode(',',$valstr)
                                           );
                $ok = $db->Execute($sql,$valarr);

                if ($ok) {
                        $this->_saved = true;
                        $autoinc = false;
                        foreach($table->keys as $k) {
                                if (is_null($this->$k)) {
                                        $autoinc = true;
                                        break;
                                }
                        }
                        if ($autoinc && sizeof($table->keys) == 1) {
                                $k = reset($table->keys);
                                $this->$k = $this->LastInsertID($db,$k);
                        }
                }

                $this->_original = $valarr;
                return !empty($ok);
        }

        function Delete()
        {
                $db = $this->DB();
                if (!$db) {
                        return false;
                }
                $table = $this->TableInfo();

                $where = $this->GenWhere($db,$table);

                $tableName = $this->nameQuoter($db,$this->_table);

                $sql = sprintf('DELETE FROM %s WHERE %s',
                                           $tableName,
                                           $where
                                           );

                $ok = $db->Execute($sql);

                return $ok ? true : false;
        }

        // returns an array of active record objects
        function Find($whereOrderBy,$bindarr=false,$pkeysArr=false,$extra=array())
        {
                $db = $this->DB();
                if (!$db || empty($this->_table)) {
                        return false;
                }
                $arr = $db->GetActiveRecordsClass(get_class($this),$this->_table, $whereOrderBy,$bindarr,$pkeysArr,$extra);
                return $arr;
        }

        // returns 0 on error, 1 on update, 2 on insert
        function Replace()
        {
                $db = $this->DB();
                if (!$db) {
                        return false;
                }
                $table = $this->TableInfo();

                $pkey = $table->keys;

                foreach($table->flds as $name=>$fld) {
                        $val = $this->$name;
                        /*
                        if (is_null($val)) {
                                if (isset($fld->not_null) && $fld->not_null) {
                                        if (isset($fld->default_value) && strlen($fld->default_value)) {
                                                continue;
                                        }
                                        else {
                                                $this->Error("Cannot update null into $name","Replace");
                                                return false;
                                        }
                                }
                        }*/
                        if (is_null($val) && !empty($fld->auto_increment)) {
                                continue;
                        }

                        if (is_array($val)) {
                                continue;
                        }

                        $t = $db->MetaType($fld->type);
                        $arr[$name] = $this->doquote($db,$val,$t);
                        $valarr[] = $val;
                }

                if (!is_array($pkey)) {
                        $pkey = array($pkey);
                }

                switch (ADODB_ASSOC_CASE) {
                        case ADODB_ASSOC_CASE_LOWER:
                                foreach ($pkey as $k => $v) {
                                        $pkey[$k] = strtolower($v);
                                }
                                break;
                        case ADODB_ASSOC_CASE_UPPER:
                                foreach ($pkey as $k => $v) {
                                        $pkey[$k] = strtoupper($v);
                                }
                                break;
                }

                $newArr = array();
                foreach($arr as $k=>$v)
                        $newArr[$this->nameQuoter($db,$k)] = $v;
                $arr = $newArr;

                $newPkey = array();
                foreach($pkey as $k=>$v)
                        $newPkey[$k] = $this->nameQuoter($db,$v);
                $pkey = $newPkey;

                $tableName = $this->nameQuoter($db,$this->_table);

                $ok = $db->Replace($tableName,$arr,$pkey);
                if ($ok) {
                        $this->_saved = true; // 1= update 2=insert
                        if ($ok == 2) {
                                $autoinc = false;
                                foreach($table->keys as $k) {
                                        if (is_null($this->$k)) {
                                                $autoinc = true;
                                                break;
                                        }
                                }
                                if ($autoinc && sizeof($table->keys) == 1) {
                                        $k = reset($table->keys);
                                        $this->$k = $this->LastInsertID($db,$k);
                                }
                        }

                        $this->_original = $valarr;
                }
                return $ok;
        }

        // returns 0 on error, 1 on update, -1 if no change in data (no update)
        function Update()
        {
                $db = $this->DB();
                if (!$db) {
                        return false;
                }
                $table = $this->TableInfo();

                $where = $this->GenWhere($db, $table);

                if (!$where) {
                        $this->error("Where missing for table $table", "Update");
                        return false;
                }
                $valarr = array();
                $neworig = array();
                $pairs = array();
                $i = -1;
                $cnt = 0;
                foreach($table->flds as $name=>$fld) {
                        $i += 1;
                        $val = $this->$name;
                        $neworig[] = $val;

                        if (isset($table->keys[$name]) || is_array($val)) {
                                continue;
                        }

                        if (is_null($val)) {
                                if (isset($fld->not_null) && $fld->not_null) {
                                        if (isset($fld->default_value) && strlen($fld->default_value)) {
                                                continue;
                                        }
                                        else {
                                                $this->Error("Cannot set field $name to NULL","Update");
                                                return false;
                                        }
                                }
                        }

                        if (isset($this->_original[$i]) && strcmp($val,$this->_original[$i]) == 0) {
                                continue;
                        }

                        if (is_null($this->_original[$i]) && is_null($val)) {
                                continue;
                        }

                        $valarr[] = $val;
                        $pairs[] = $this->nameQuoter($db,$name).'='.$db->Param($cnt);
                        $cnt += 1;
                }


                if (!$cnt) {
                        return -1;
                }

                $tableName = $this->nameQuoter($db,$this->_table);

                $sql = sprintf('UPDATE %s SET %s WHERE %s',
                                           $tableName,
                                           implode(',',$pairs),
                                           $where);

                $ok = $db->Execute($sql,$valarr);
                if ($ok) {
                        $this->_original = $neworig;
                        return 1;
                }
                return 0;
        }

        function GetAttributeNames()
        {
                $table = $this->TableInfo();
                if (!$table) {
                        return false;
                }
                return array_keys($table->flds);
        }

        /**
         * Quotes the table, column and field names.
         *
         * This honours the internal {@see $_quoteNames} property, which overrides
         * the global $ADODB_QUOTE_FIELDNAMES directive.
         *
         * @param ADOConnection $db   The database connection
         * @param string        $name The table or column name to quote
         *
         * @return string The quoted name
         */
        private function nameQuoter($db, $name)
        {
                global $ADODB_QUOTE_FIELDNAMES;

                $save = $ADODB_QUOTE_FIELDNAMES;
                $ADODB_QUOTE_FIELDNAMES = $this->_quoteNames;

                $string = _adodb_quote_fieldname($db, $name);

                $ADODB_QUOTE_FIELDNAMES = $save;

                return $string;
        }

};

function adodb_GetActiveRecordsClass(&$db, $class, $table,$whereOrderBy,$bindarr, $primkeyArr,
                        $extra)
{
global $_ADODB_ACTIVE_DBS;


        $save = $db->SetFetchMode(ADODB_FETCH_NUM);

        $qry = "select * from ".$table;

        if (!empty($whereOrderBy)) {
                $qry .= ' WHERE '.$whereOrderBy;
        }
        if(isset($extra['limit'])) {
                $rows = false;
                if(isset($extra['offset'])) {
                        $rs = $db->SelectLimit($qry, $extra['limit'], $extra['offset'],$bindarr);
                } else {
                        $rs = $db->SelectLimit($qry, $extra['limit'],-1,$bindarr);
                }
                if ($rs) {
                        while (!$rs->EOF) {
                                $rows[] = $rs->fields;
                                $rs->MoveNext();
                        }
                }
        } else
                $rows = $db->GetAll($qry,$bindarr);

        $db->SetFetchMode($save);

        $false = false;

        if ($rows === false) {
                return $false;
        }


        if (!class_exists($class)) {
                $db->outp_throw("Unknown class $class in GetActiveRecordsClass()",'GetActiveRecordsClass');
                return $false;
        }
        $arr = array();
        // arrRef will be the structure that knows about our objects.
        // It is an associative array.
        // We will, however, return arr, preserving regular 0.. order so that
        // obj[0] can be used by app developers.
        $arrRef = array();
        $bTos = array(); // Will store belongTo's indices if any
        foreach($rows as $row) {

                $obj = new $class($table,$primkeyArr,$db);
                if ($obj->ErrorNo()){
                        $db->_errorMsg = $obj->ErrorMsg();
                        return $false;
                }
                $obj->Set($row);
                $arr[] = $obj;
        } // foreach($rows as $row)

        return $arr;
}