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<?php
# ***** BEGIN LICENSE BLOCK *****
# This file is part of Clearbricks.
# Copyright (c) 2006 Olivier Meunier and contributors. All rights
# reserved.
#
# Clearbricks 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 2 of the License, or
# (at your option) any later version.
#
# Clearbricks 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 Clearbricks; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# ***** END LICENSE BLOCK *****
/**
@ingroup CB_DBLAYER
@brief PostgreSQL Database Driver.
See the dbLayer documentation for common methods.
This class adds a method for PostgreSQL only: callFunction().
*/
class pgsqlConnection extends dbLayer implements i_dbLayer
{
protected $__driver = 'pgsql';
private function get_connection_string($host,$user,$password,$database)
{
$str = '';
$port = false;
if ($host)
{
if (strpos($host,':') !== false) {
$bits = explode(':',$host);
$host = array_shift($bits);
$port = abs((integer) array_shift($bits));
}
$str .= "host = '".addslashes($host)."' ";
if ($port) {
$str .= 'port = '.$port.' ';
}
}
if ($user) {
$str .= "user = '".addslashes($user)."' ";
}
if ($password) {
$str .= "password = '".addslashes($password)."' ";
}
if ($database) {
$str .= "dbname = '".addslashes($database)."' ";
}
return $str;
}
public function db_connect($host,$user,$password,$database)
{
if (!function_exists('pg_connect')) {
throw new Exception('PHP PostgreSQL functions are not available');
}
$str = $this->get_connection_string($host,$user,$password,$database);
if (($link = @pg_connect($str)) === false) {
throw new Exception('Unable to connect to database');
}
return $link;
}
public function db_pconnect($host,$user,$password,$database)
{
if (!function_exists('pg_pconnect')) {
throw new Exception('PHP PostgreSQL functions are not available');
}
$str = $this->get_connection_string($host,$user,$password,$database);
if (($link = @pg_pconnect($str)) === false) {
throw new Exception('Unable to connect to database');
}
return $link;
}
public function db_close($handle)
{
if (is_resource($handle)) {
pg_close($handle);
}
}
public function db_version($handle)
{
if (is_resource($handle))
{
$v = pg_version($handle);
if (isset($v['server'])) {
return $v['server'];
}
}
return null;
}
public function db_query($handle,$query)
{
if (is_resource($handle))
{
$res = @pg_query($handle,$query);
if ($res === false) {
$e = new Exception($this->db_last_error($handle));
$e->sql = $query;
throw $e;
}
return $res;
}
}
public function db_exec($handle,$query)
{
return $this->db_query($handle,$query);
}
public function db_num_fields($res)
{
if (is_resource($res)) {
return pg_num_fields($res);
}
return 0;
}
public function db_num_rows($res)
{
if (is_resource($res)) {
return pg_num_rows($res);
}
return 0;
}
public function db_field_name($res,$position)
{
if (is_resource($res)) {
return pg_field_name($res,$position);
}
}
public function db_field_type($res,$position)
{
if (is_resource($res)) {
return pg_field_type($res,$position);
}
}
public function db_fetch_assoc($res)
{
if (is_resource($res)) {
return pg_fetch_assoc($res);
}
}
public function db_result_seek($res,$row)
{
if (is_resource($res)) {
return pg_result_seek($res,(int) $row);
}
return false;
}
public function db_changes($handle,$res)
{
if (is_resource($handle) && is_resource($res)) {
return pg_affected_rows($res);
}
}
public function db_last_error($handle)
{
if (is_resource($handle)) {
return pg_last_error($handle);
}
return false;
}
public function db_escape_string($str,$handle=null)
{
return pg_escape_string($str);
}
public function vacuum($table)
{
$this->execute('VACUUM FULL '.$this->escapeSystem($table));
}
public function dateFormat($field,$pattern)
{
$rep = array(
'%d' => 'DD',
'%H' => 'HH24',
'%M' => 'MI',
'%m' => 'MM',
'%S' => 'SS',
'%Y' => 'YYYY'
);
$pattern = str_replace(array_keys($rep),array_values($rep),$pattern);
return 'TO_CHAR('.$field.','."'".$this->escape($pattern)."') ";
}
/**
Calls a PostgreSQL function an returns the result as a record. After
<var>$name</var>, you can add any parameters you want to append them to
the PostgreSQL function. You don't need to escape string in arguments.
@param name <b>string</b> Function name
@return <b>record</b>
*/
public function callFunction($name)
{
$data = func_get_args();
array_shift($data);
foreach ($data as $k => $v)
{
if (is_null($v)) {
$data[$k] = 'NULL';
} elseif (is_string($v)) {
$data[$k] = "'".$this->escape($v)."'";
} elseif (is_array($v)) {
$data[$k] = $v[0];
} else {
$data[$k] = $v;
}
}
$req =
'SELECT '.$name."(\n".
implode(",\n",array_values($data)).
"\n) ";
return $this->select($req);
}
}
?>