# DeleteQuery.class.php

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    00001 <?php
    00002 /***************************************************************************
    00003  *   Copyright (C) 2004-2007 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
    00015     final class DeleteQuery extends QuerySkeleton implements SQLTableName
    00016     {
    00017         protected $table    = null;
    00018
    00019         public function getId()
    00020         {
    00021             throw new UnsupportedMethodException();
    00022         }
    00023
    00027         public function from($table)
    00028         {
    00029             $this->table = $table;
    00030
    00031             return $this;
    00032         }
    00033
    00034         public function getTable()
    00035         {
    00036             return $this->table;
    00037         }
    00038
    00039         public function toDialectString(Dialect $dialect)
    00040         {
    00041             if ($this->where) {
    00042                 $deleteStr =
    00043                     'DELETE FROM '.$dialect->quoteTable($this->table)
    00044                     .parent::toDialectString($dialect);
    00045
    00046                 $this->checkReturning($dialect);
    00047
    00048                 if (empty($this->returning)) {
    00049                     return $deleteStr;
    00050                 } else {
    00051                     $query =
    00052                         $deleteStr
    00053                         .' RETURNING '
    00054                         .$this->toDialectStringReturning($dialect);
    00055
    00056                     return $query;
    00057                 }
    00058             } else
    00059                 throw new WrongArgumentException(
    00060                     "leave '{$this->table}' table alone in peace, bastard"
    00061                 );
    00062         }
    00063     }
    00064 ?>