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1
manumanu
using xoopsDB class with a separate database

  • 2004/10/8 16:13

  • manumanu

  • Just popping in

  • Posts: 10

  • Since: 2002/5/15


hello,

I would like to use the xoopsDB object to connect to a separate database in my module.

In other words I need to fetch data from another database than XOOPS one, but I didn't manage to find how to set correctly the new database host,name...

Tried get_class_methods() but didn't found nothing to set DB connection data...

$xoopsDB seems to always use constants (XOOPS_DB_HOST, XOOPS_DB_USER, XOOPS_DB_PASS), so its impossible to connect to a different database?

thanks
2
ejuden01
Re: using xoopsDB class with a separate database

  • 2004/10/8 16:34

  • ejuden01

  • Not too shy to talk

  • Posts: 121

  • Since: 2004/4/5 1


Couldn't you just replace the constants with the db information that you are trying to connect to?
3
ejuden01
Re: using xoopsDB class with a separate database

  • 2004/10/8 16:43

  • ejuden01

  • Not too shy to talk

  • Posts: 121

  • Since: 2004/4/5 1


You might consider copying the mysqldatabase.php file from XOOPS_ROOT_PATH/class/database and put it in your module files with a different class name and variable names. That way, you could specify your own constants for the database connection and change them if your database changes. Anybody else have suggestions?
4
manumanu
Re: using xoopsDB class with a separate database

  • 2004/10/8 16:47

  • manumanu

  • Just popping in

  • Posts: 10

  • Since: 2002/5/15


Thanks ejuden01 ,

I try your suggestion and reply soon
5
manumanu
Re: using xoopsDB class with a separate database

  • 2004/10/8 16:57

  • manumanu

  • Just popping in

  • Posts: 10

  • Since: 2002/5/15


Tried this:
define(XOOPS_DB_HOST,'localhost');
define(XOOPS_DB_USER,'root');
define(XOOPS_DB_PASS,'pass');
define(XOOPS_DB_NAME,'second_database');
define(XOOPS_DB_PREFIX,''); 
//$databouse =  new secondDatabase();
$databouse =& XoopsDatabaseFactory::getDatabaseConnection();
$res = $databouse->query('SELECT my_field FROM my_table');


and got this in database debug popup:

Quote:
SELECT my_field FROM my_table
Error number: 1146
Error message: Table 'intra_php.my_table' doesn't exist


(intra_php is my XOOPS_DB_PREFIX)

Since $xoopsDB seems to be created with $xoopsDB =& XoopsDatabaseFactory::getDatabaseConnection();, my customXOOPS_DB_PREFIX is ignored...
6
manumanu
Re: using xoopsDB class with a separate database

  • 2004/10/8 17:05

  • manumanu

  • Just popping in

  • Posts: 10

  • Since: 2002/5/15


Another test:

Tried to wrap connect() method by extending XoopsMySQLDatabase class:

class secondDatabase extends XoopsMySQLDatabase {
    
    var $Host = 'localhost';
    var $Database = 'second_database';
    var $User = 'root';
    var $Password = 'pass';
    
    
    function connect($selectdb = true)
    {
        if (XOOPS_DB_PCONNECT == 1) {
            $this->conn = @mysql_pconnect($this->Host, $this->User, $this->Password);
        } else {
            $this->conn = @mysql_connect($this->Host, $this->User, $this->Password);
        }
    
        if (!$this->conn) {
            $this->logger->addQuery('', $this->error(), $this->errno());
            return false;
        }
        
        if($selectdb != false){
            if (!mysql_select_db($this->Database)) {
                $this->logger->addQuery('', $this->error(), $this->errno());
                return false;
            }
        }
        return true;
    }
    
}



and my standard query code:
$databouse = new secondDatabase();
$res = $databouse->query('SELECT my_field FROM my_table');
...[data fetch]...


... and nothing happens (even in php debug mode)
7
manumanu
Re: using xoopsDB class with a separate database

  • 2004/10/8 17:12

  • manumanu

  • Just popping in

  • Posts: 10

  • Since: 2002/5/15


in mysqldatabase.php:

Quote:
perform a query
*
* This method is empty and does nothing! It should therefore only be
* used if nothing is exactly what you want done!


forget my previous post lol




With chance a XOOPS guru/dev may read this thread and have a solution?..
8
Mithrandir
Re: using xoopsDB class with a separate database

extend XoopsMySQLDatabaseSafe instead

The implementation of XoopsMySQLDatabase::query() does absolutely nothing because this is the method, which is overridden in XoopsMySQLDatabaseSafe and XoopsMySQLDatabaseProxy
9
manumanu
Re: using xoopsDB class with a separate database

  • 2004/10/8 17:51

  • manumanu

  • Just popping in

  • Posts: 10

  • Since: 2002/5/15


thanks Mithrandir ,

Extended XoopsMySQLDatabaseSafe and got this :
Quote:
Warning [PHP]: mysql_query(): supplied argument is not a valid MySQL-Link resource in file X:\htdocs\xoops\class\database\mysqldatabase.php line 236


Line 236 is in XoopsMySQLDatabase::connect() method! (with XOOPS constants I dont want to use)

But I had redefined connect() in secondDatabase witch extends XoopsMySQLDatabaseSafe witch extends XoopsMySQLDatabase!

method redefinition works at only one level?
10
manumanu
Re: using xoopsDB class with a separate database>> ok

  • 2004/10/9 10:48

  • manumanu

  • Just popping in

  • Posts: 10

  • Since: 2002/5/15


Ok, its working

Here is the code if someone is interested:

class secondDatabase extends XoopsMySQLDatabaseSafe {
    
    var $Host = 'host';
    var $Database = 'database';
    var $User = 'user';
    var $Password = 'pass';
    
    function secondDatabase(){
    }
    
    function connect($selectdb = true)
    {
        if (XOOPS_DB_PCONNECT == 1) {
            $this->conn = @mysql_pconnect($this->Host, $this->User, $this->Password);
        } else {
            $this->conn = @mysql_connect($this->Host, $this->User, $this->Password);
        }
    
        if (!$this->conn) {
            $this->logger->addQuery('', $this->error(), $this->errno());
            return false;
        }
        
        if($selectdb != false){
            if (!mysql_select_db($this->Database)) {
                $this->logger->addQuery('', $this->error(), $this->errno());
                return false;
            }
        }
        return true;
    }
    
}

Note that this class uses XOOPS settings for persistent connexion or not...

and in the module:
$altDB= new secondDatabase();
$xoopsLogger=& XoopsLogger::instance();
$altDB->connect(true);
$altDB->setLogger(&$xoopsLogger);
$res = $altDB->query('SELECT fields FROM table WHERE 1');
while ($myrow = $altDB->fetchArray($res)) {
    [fetch your data]
}


thanks again

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