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<?php
/**
* @file CAS/PGTStorage/pgt-db.php
* Basic class for PGT database storage
*/
/**
* @class PGTStorageDB
* The PGTStorageDB class is a class for PGT database storage. An instance of
* this class is returned by CASClient::SetPGTStorageDB().
*
* @author Pascal Aubry <pascal.aubry at univ-rennes1.fr>
*
* @ingroup internalPGTStorageDB
*/
class PGTStorageDB extends PGTStorage
{
/**
* @addtogroup internalPGTStorageDB
* @{
*/
/**
* a string representing a PEAR DB URL to connect to the database. Written by
* PGTStorageDB::PGTStorageDB(), read by getURL().
*
* @hideinitializer
* @private
*/
var $_url='';
/**
* This method returns the PEAR DB URL to use to connect to the database.
*
* @return a PEAR DB URL
*
* @private
*/
function getURL()
{
return $this->_url;
}
/**
* The handle of the connection to the database where PGT's are stored. Written by
* PGTStorageDB::init(), read by getLink().
*
* @hideinitializer
* @private
*/
var $_link = null;
/**
* This method returns the handle of the connection to the database where PGT's are
* stored.
*
* @return a handle of connection.
*
* @private
*/
function getLink()
{
return $this->_link;
}
/**
* The name of the table where PGT's are stored. Written by
* PGTStorageDB::PGTStorageDB(), read by getTable().
*
* @hideinitializer
* @private
*/
var $_table = '';
/**
* This method returns the name of the table where PGT's are stored.
*
* @return the name of a table.
*
* @private
*/
function getTable()
{
return $this->_table;
}
// ########################################################################
// DEBUGGING
// ########################################################################
/**
* This method returns an informational string giving the type of storage
* used by the object (used for debugging purposes).
*
* @return an informational string.
* @public
*/
function getStorageType()
{
return "database";
}
/**
* This method returns an informational string giving informations on the
* parameters of the storage.(used for debugging purposes).
*
* @public
*/
function getStorageInfo()
{
return 'url=`'.$this->getURL().'\', table=`'.$this->getTable().'\'';
}
// ########################################################################
// CONSTRUCTOR
// ########################################################################
/**
* The class constructor, called by CASClient::SetPGTStorageDB().
*
* @param $cas_parent the CASClient instance that creates the object.
* @param $user the user to access the data with
* @param $password the user's password
* @param $database_type the type of the database hosting the data
* @param $hostname the server hosting the database
* @param $port the port the server is listening on
* @param $database the name of the database
* @param $table the name of the table storing the data
*
* @public
*/
function PGTStorageDB($cas_parent,$user,$password,$database_type,$hostname,$port,$database,$table)
{
phpCAS::traceBegin();
// call the ancestor's constructor
$this->PGTStorage($cas_parent);
if ( empty($database_type) ) $database_type = CAS_PGT_STORAGE_DB_DEFAULT_DATABASE_TYPE;
if ( empty($hostname) ) $hostname = CAS_PGT_STORAGE_DB_DEFAULT_HOSTNAME;
if ( $port==0 ) $port = CAS_PGT_STORAGE_DB_DEFAULT_PORT;
if ( empty($database) ) $database = CAS_PGT_STORAGE_DB_DEFAULT_DATABASE;
if ( empty($table) ) $table = CAS_PGT_STORAGE_DB_DEFAULT_TABLE;
// build and store the PEAR DB URL
$this->_url = $database_type.':'.'//'.$user.':'.$password.'@'.$hostname.':'.$port.'/'.$database;
// XXX should use setURL and setTable
phpCAS::traceEnd();
}
// ########################################################################
// INITIALIZATION
// ########################################################################
/**
* This method is used to initialize the storage. Halts on error.
*
* @public
*/
function init()
{
phpCAS::traceBegin();
// if the storage has already been initialized, return immediatly
if ( $this->isInitialized() )
return;
// call the ancestor's method (mark as initialized)
parent::init();
//include phpDB library (the test was introduced in release 0.4.8 for
//the integration into Tikiwiki).
if (!class_exists('DB')) {
include_once('DB.php');
}
// try to connect to the database
$this->_link = DB::connect($this->getURL());
if ( DB::isError($this->_link) ) {
phpCAS::error('could not connect to database ('.DB::errorMessage($this->_link).')');
}
var_dump($this->_link);
phpCAS::traceBEnd();
}
/** @} */
}
?>
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