# FromTable.class.php

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    00001 <?php
    00002 /***************************************************************************
    00003  *   Copyright (C) 2005-2007 by 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
    00018     final class FromTable implements Aliased, SQLTableName
    00019     {
    00020         private $table  = null;
    00021         private $alias  = null;
    00022         private $schema = null;
    00023
    00024         public function __construct($table, $alias = null)
    00025         {
    00026             if (
    00027                 !$alias
    00028                 &&
    00029                     (
    00030                         $table instanceof SelectQuery
    00031                         || $table instanceof LogicalObject
    00032                         || $table instanceof SQLFunction
    00033                     )
    00034             )
    00035                 throw new WrongArgumentException(
    00036                     'you should specify alias, when using '.
    00037                     'SelectQuery or LogicalObject as table'
    00038                 );
    00039
    00040             if (is_string($table) && strpos($table, '.') !== false)
    00041                 list($this->schema, $this->table) = explode('.', $table, 2);
    00042             else
    00043                 $this->table = $table;
    00044
    00045             $this->alias = $alias;
    00046         }
    00047
    00048         public function getAlias()
    00049         {
    00050             return $this->alias;
    00051         }
    00052
    00053         public function toDialectString(Dialect $dialect)
    00054         {
    00055             if ($this->table instanceof Query)
    00056                 return
    00057                     "({$this->table->toDialectString($dialect)}) AS "
    00058                     .$dialect->quoteTable($this->alias);
    00059             elseif ($this->table instanceof DialectString)
    00060                 return
    00061                     $this->table->toDialectString($dialect).' AS '
    00062                     .$dialect->quoteTable($this->alias);
    00063             else
    00064                 return
    00065                     (
    00066                         $this->schema
    00067                             ? $dialect->quoteTable($this->schema)."."
    00068                             : null
    00069                     )
    00070                     .$dialect->quoteTable($this->table)
    00071                     .(
    00072                         $this->alias
    00073                             ? ' AS '.$dialect->quoteTable($this->alias)
    00074                             : null
    00075                     );
    00076         }
    00077
    00078         public function getTable()
    00079         {
    00080             return $this->alias ? $this->alias : $this->table;
    00081         }
    00082     }
    00083 ?>