<?php/** * @file CAS/PGTStorage/pgt-db.php * Basic class for PGT database storage */// 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');}/** * @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();            // 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();    }  /** @} */}?>