# EqualsLowerExpression.class.php

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    00001 <?php
    00002 /****************************************************************************
    00003  *   Copyright (C) 2004-2007 by Konstantin V. Arkhipov, Anton E. Lebedevich *
    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
    00015     final class EqualsLowerExpression implements LogicalObject, MappableObject
    00016     {
    00017         private $left   = null;
    00018         private $right  = null;
    00019
    00020         public function __construct($left, $right)
    00021         {
    00022             $this->left     = $left;
    00023             $this->right    = $right;
    00024         }
    00025
    00026         public function toDialectString(Dialect $dialect)
    00027         {
    00028             return
    00029                 '('
    00030                 .$dialect->toFieldString(
    00031                     SQLFunction::create('lower', $this->left)
    00032                 ).' = '
    00033                 .$dialect->toValueString(
    00034                     is_string($this->right)
    00035                         ? mb_strtolower($this->right)
    00036                         : SQLFunction::create('lower', $this->right)
    00037                 )
    00038                 .')';
    00039         }
    00040
    00044         public function toMapped(ProtoDAO $dao, JoinCapableQuery $query)
    00045         {
    00046             return new self(
    00047                 $dao->guessAtom($this->left, $query),
    00048                 $dao->guessAtom($this->right, $query)
    00049             );
    00050         }
    00051
    00052         public function toBoolean(Form $form)
    00053         {
    00054             $left   = $form->toFormValue($this->left);
    00055             $right  = $form->toFormValue($this->right);
    00056
    00057             $both =
    00058                 (null !== $left)
    00059                 && (null !== $right);
    00060
    00061             return $both && (mb_strtolower($left) === mb_strtolower($right));
    00062         }
    00063     }
    00064 ?>