<?php
/* 
    Last change in version: 2.1 Alpha 2
#########################################################################################
#    ADbNewsSender 2 									#
#    Copyright (C) 2010 Florian Grannemann (E-mail: hide@address.com)  		#
#    Website: http://adbnewssender.sf.net						#
#											#
#    This program is free software: you can redistribute it and/or modify		#
#    it under the terms of the GNU General Public License as published by		#
#    the Free Software Foundation, either version 3 of the License, or			#
#    any later version.									#
#											#
#    This program is distributed in the hope that it will be useful,			#
#    but WITHOUT ANY WARRANTY; without even the implied warranty of			#
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the			#
#    GNU General Public License for more details.					#
#											#
#    You should have received a copy of the GNU General Public License			#
#    along with this program.  If not, see http://www.gnu.org/licenses/.		#
#########################################################################################
	
*/
/*
	This file implements the rename_table function.
	
*/

//$querystring contains the old table name
//$params contains the new table name

$res=@pg_query("SELECT column_name FROM information_schema.key_column_usage, information_schema.table_constraints WHERE information_schema.table_constraints.table_name = '".strtolower($querystring)."' and information_schema.key_column_usage.table_name='".strtolower($querystring)."' and (constraint_type ='PRIMARY KEY');");


$pkeys="";


//storing primary keys in an string
$firstentry="yes";
while($row=pg_fetch_row($res)){

	if($firstentry !="yes"){
		$pkeys=$pkeys.", ";
	}
	else{
	    $firstentry="no";
	}
	$pkeys=$pkeys.$row[0];
	
}


$query="ALTER TABLE $querystring RENAME TO $params;";
if(@pg_query($this->session,$query)){

    //now drop all primary keys of the old table name:

    
    @pg_query("ALTER TABLE ".$params." drop constraint ".$querystring."_pkey;");
    
    //now add primary keys to the new table name:
    @pg_query("ALTER TABLE ".$params." ADD PRIMARY KEY (".$pkeys.");");
    
    $result=true;

}

?>