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Added limit_query function.

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mdean 2001-07-01 16:55:07 +00:00
parent 9bcff82453
commit 030232dfc3
1 changed files with 44 additions and 5 deletions
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47
phpgwapi/inc/class.db_mysql.inc.php
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@ -23,6 +23,7 @@ class db {
var $Password = ""; var $Password = "";
/* public: configuration parameters */ /* public: configuration parameters */
var $use_pconnect = True;
var $auto_stripslashes = False; var $auto_stripslashes = False;
var $Auto_Free = 0; ## Set to 1 for automatic mysql_free_result() var $Auto_Free = 0; ## Set to 1 for automatic mysql_free_result()
var $Debug = 0; ## Set to 1 for debugging messages. var $Debug = 0; ## Set to 1 for debugging messages.
@ -74,10 +75,16 @@ class db {
$Password = $this->Password; $Password = $this->Password;
/* establish connection, select database */ /* establish connection, select database */
if ( 0 == $this->Link_ID ) { if ( 0 == $this->Link_ID )
$this->Link_ID=mysql_pconnect($Host, $User, $Password); {
if (!$this->Link_ID) { if ($this->use_pconnect)
$this->halt("pconnect($Host, $User, \$Password) failed."); $this->Link_ID=mysql_pconnect($Host, $User, $Password);
else
$this->Link_ID=mysql_connect($Host, $User, $Password);
if (!$this->Link_ID)
{
$this->halt("connect($Host, $User, \$Password) failed.");
return 0; return 0;
} }
@ -158,6 +165,38 @@ class db {
return $this->Query_ID; return $this->Query_ID;
} }
// public: perform a query with limited result set
function limit_query($Query_String, $offset, $num_rows, $line = '', $file = '')
{
global $phpgw_info;
if ($Query_String == '')
return 0;
if (!$this->connect())
return 0; // we already complained in connect() about that.
if ($this->Query_ID)
$this->free();
if ($this->Debug)
printf("Debug: limit_query = %s<br>offset=%d, num_rows=%d<br>\n", $Query_String, $offset, $num_rows);
if (!IsSet($num_rows) || $num_rows < 1)
$num_rows = $phpgw_info['user']['preferences']['common']['maxmatchs'];
$Query_String .= ' LIMIT ' . $offset . ',' . $num_rows;
$this->Query_ID = @mysql_query($Query_String, $this->Link_ID);
$this->Row = 0;
$this->Errno = mysql_errno();
$this->Error = mysql_error();
if (!$this->Query_ID)
$this->halt('Invalid SQL: ' . $Query_String, $line, $file);
return $this->Query_ID;
}
/* public: walk result set */ /* public: walk result set */
function next_record() { function next_record() {
if (!$this->Query_ID) { if (!$this->Query_ID) {