egroupware_official/phpgwapi/inc/class.db_mssql.inc.php
2002-02-15 01:25:20 +00:00

394 lines
8.6 KiB
PHP

<?php
/**************************************************************************\
* phpGroupWare API - MS SQL Server support *
* (C) Copyright 1998 Cameron Taggart (cameront@wolfenet.com) *
* Modified by Guarneri carmelo (carmelo@melting-soft.com) *
* Modified by Cameron Just (C.Just@its.uq.edu.au) *
* ------------------------------------------------------------------------ *
* This is not part of phpGroupWare, but is used by phpGroupWare. *
* http://www.phpgroupware.org/ *
* ------------------------------------------------------------------------ *
* This program is free software; you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as published *
* by the Free Software Foundation; either version 2.1 of the License, or *
* any later version. *
\**************************************************************************/
/* $Id$ */
/* echo '<BR>This is using the MSSQL class<BR>'; */
/* ^^ really ?! :) */
/* mdean, put your info in the banner, mkay? */
class db
{
var $Host = '';
var $Database = '';
var $User = '';
var $Password = '';
var $Link_ID = 0;
var $Query_ID = 0;
var $Record = array();
var $Row = 0;
var $VEOF = -1;
var $Errno = 0;
var $Error = '';
var $Auto_Free = 0; ## set this to 1 to automatically free results
var $Debug = false;
var $Transaction = false;
function connect()
{
if(0 == $this->Link_ID)
{
if($GLOBALS['phpgw_info']['server']['db_persistent'])
{
$this->Link_ID=mssql_pconnect($this->Host, $this->User, $this->Password);
}
else
{
$this->Link_ID=mssql_connect($this->Host, $this->User, $this->Password);
}
if(!$this->Link_ID)
{
$this->halt('Link-ID == false, mssql_'.($GLOBALS['phpgw_info']['server']['db_persistent']?'p':'').'connect failed');
}
else
{
mssql_select_db($this->Database, $this->Link_ID);
}
}
}
function disconnect()
{
}
function db_addslashes($str)
{
if(!isset($str) || $str == '')
{
return '';
}
return ereg_replace("'", "''", $str);
}
function free_result()
{
/*
mssql_free_result($this->Query_ID);
*/
if ($this->Query_ID)
{
mssql_free_result($this->Query_ID);
}
$this->Query_ID = 0;
$this->VEOF = -1;
}
function query($Query_String, $line = '', $file = '')
{
$this->VEOF = -1;
if(!$this->Link_ID)
{
$this->connect();
}
$this->Query_ID = mssql_query($Query_String, $this->Link_ID);
$this->Row = 0;
if(!$this->Query_ID)
{
$this->halt("Invalid SQL: " . $Query_String, $line, $file);
}
return $this->Query_ID;
}
// I don't have access to M$-SQL, can someone finish these 2 functions ? (jengo)
function to_timestamp($epoch)
{
return date('Y-m-d H:i:s', $epoch);
}
function from_timestamp($timestamp)
{
return strtotime($timestamp);
}
// public: perform a query with limited result set
function limit_query($Query_String, $offset, $line = '', $file = '', $num_rows = '')
{
if(!$num_rows)
{
$num_rows = $GLOBALS['phpgw_info']['user']['preferences']['common']['maxmatchs'];
}
if($this->Debug)
{
printf("Debug: limit_query = %s<br>offset=%d, num_rows=%d<br>\n", $Query_String, $offset, $num_rows);
}
$this->query($Query_String, $line, $file);
if($this->Query_ID)
{
$this->Row = $offset;
// Push cursor to appropriate row in case next_record() is used
if($offset > 0)
{
@mssql_data_seek($this->Query_ID, $offset);
}
$this->VEOF = $offset + $num_rows - 1;
}
return $this->Query_ID;
}
function next_record()
{
if(!$this->Query_ID)
{
$this->halt("next_record called with no query pending.");
return 0;
}
if($this->VEOF == -1 || ($this->Row++ <= $this->VEOF))
{
// Work around for buggy mssql_fetch_array
$rec = @mssql_fetch_row($this->Query_ID);
if($rec)
{
$this->Record = array();
for($i = 0; $i < count($rec); $i++)
{
$this->Record[$i] = $rec[$i];
$o = mssql_fetch_field($this->Query_ID, $i);
$this->Record[$o->name] = $rec[$i];
}
}
else
{
$this->Record = NULL;
}
}
else
{
$this->Record = NULL;
}
$stat = is_array($this->Record);
if(!$stat && $this->Auto_Free)
{
$this->free();
}
return $stat;
}
function transaction_begin()
{
$this->Transaction = !!mssql_query('BEGIN TRAN', $this->Link_ID);
return $this->Transaction;
}
function transaction_commit()
{
if(!$this->Errno && $this->Transaction)
{
$this->Transaction = false;
return !!mssql_query('COMMIT TRAN', $this->Link_ID);
}
return False;
}
function transaction_abort()
{
if($this->Transaction)
{
$this->Transaction = false;
return !!mssql_query('ROLLBACK TRAN', $this->Link_ID);
}
return false;
}
function seek($pos)
{
mssql_data_seek($this->Query_ID,$pos);
$this->Row = $pos;
}
function metadata($table)
{
$count = 0;
$id = 0;
$res = array();
$this->connect();
$id = mssql_query("select * from $table", $this->Link_ID);
if(!$id)
{
$this->halt('Metadata query failed.');
}
$count = mssql_num_fields($id);
for($i=0; $i<$count; $i++)
{
$info = mssql_fetch_field($id, $i);
$res[$i]['table'] = $table;
$res[$i]['name'] = $info['name'];
$res[$i]['len'] = $info['max_length'];
$res[$i]['flags'] = $info['numeric'];
}
$this->free_result();
return $res;
}
function affected_rows()
{
return mssql_affected_rows($this->Query_ID);
}
function num_rows()
{
/*
return mssql_num_rows($this->Query_ID);
*/
if($this->Query_ID)
{
return mssql_num_rows($this->Query_ID);
}
else
{
return 0;
}
}
function num_fields()
{
return mssql_num_fields($this->Query_ID);
}
function nf()
{
return $this->num_rows();
}
function np()
{
print $this->num_rows();
}
function f($Field_Name)
{
return $this->Record[strtolower($Field_Name)];
}
function p($Field_Name)
{
print $this->f($Field_Name);
}
/* public: table locking */
function get_last_insert_id($table, $field)
{
/* This will get the last insert ID created on the current connection. Should only be called
* after an insert query is run on a table that has an auto incrementing field. Of note, table
* and field are required for pgsql compatiblity. MSSQL uses a query to retrieve the last
* identity on the connection, so table and field are ignored here as well.
*/
if(!isset($table) || $table == '' || !isset($field) || $field == '')
{
return -1;
}
$result = @mssql_query("select @@identity", $this->Link_ID);
if(!$result)
{
return -1;
}
return mssql_result($result, 0, 0);
}
function lock($table, $mode="write")
{
/* /me really, really, really hates locks - transactions serve just fine */
return $this->transaction_begin();
}
function unlock()
{
return $this->transaction_commit();
}
/* private: error handling */
function halt($msg, $line = '', $file = '')
{
$this->unlock();
$this->Errno = 1;
$this->Error = mssql_get_last_message();
if($this->Error == '')
{
$this->Error = "General Error (The MS-SQL interface did not return a detailed error message).";
}
if($this->Halt_On_Error == "no")
{
return;
}
$this->haltmsg($msg);
if($file)
{
printf("<br><b>File:</b> %s",$file);
}
if($line)
{
printf("<br><b>Line:</b> %s",$line);
}
if($this->Halt_On_Error != "report")
{
echo "<p><b>Session halted.</b>";
$GLOBALS['phpgw']->common->phpgw_exit(True);
}
}
function haltmsg($msg)
{
printf("<b>Database error:</b> %s<br>\n", $msg);
if($this->Errno != "0" && $this->Error != "()")
{
printf("<b>MS-SQL Error</b>: %s (%s)<br>\n", $this->Errno, $this->Error);
}
}
function table_names()
{
$this->query("select name from sysobjects where type='u' and name != 'dtproperties'");
$i = 0;
while($info = @mssql_fetch_row($this->Query_ID))
{
$return[$i]['table_name'] = $info[0];
$return[$i]['tablespace_name'] = $this->Database;
$return[$i]['database'] = $this->Database;
$i++;
}
return $return;
}
/* Surely we can do this, eh */
function index_names()
{
$return = array();
return $return;
}
}
?>