# Sequenceless.class.php

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    00001 <?php
    00002 /***************************************************************************
    00003  *   Copyright (C) 2005-2007 by Konstantin V. Arkhipov                     *
    00004  *                                                                         *
    00005  *   This program is free software; you can redistribute it and/or modify  *
    00006  *   it under the terms of the GNU Lesser General Public License as        *
    00007  *   published by the Free Software Foundation; either version 3 of the    *
    00008  *   License, or (at your option) any later version.                       *
    00009  *                                                                         *
    00010  ***************************************************************************/
    00011
    00027     abstract class Sequenceless extends DB
    00028     {
    00029         protected $sequencePool = array();
    00030
    00031         abstract protected function getInsertId();
    00032
    00036         final public function obtainSequence($sequence)
    00037         {
    00038             $id = Identifier::create();
    00039
    00040             $this->sequencePool[$sequence][] = $id;
    00041
    00042             return $id;
    00043         }
    00044
    00045         final public function query(Query $query)
    00046         {
    00047             $result = $this->queryRaw(
    00048                 $query->toDialectString($this->getDialect())
    00049             );
    00050
    00051             if (
    00052                 ($query instanceof InsertQuery)
    00053                 && !empty($this->sequencePool[$name = $query->getTable().'_id'])
    00054             ) {
    00055                 $id = current($this->sequencePool[$name]);
    00056
    00057                 Assert::isTrue(
    00058                     $id instanceof Identifier,
    00059                     'identifier was lost in the way'
    00060                 );
    00061
    00062                 $id->setId($this->getInsertId())->finalize();
    00063
    00064                 unset(
    00065                     $this->sequencePool[
    00066                         $name
    00067                     ][
    00068                         key($this->sequencePool[$name])
    00069                     ]
    00070                 );
    00071             }
    00072
    00073             return $result;
    00074         }
    00075     }
    00076 ?>