Source for file SearchEntryIterator.class.php

<?php
/**
 * @since 3/1/06
 * @package harmoni.osid_v2.logging
 * 
 * @copyright Copyright &copy; 2005, Middlebury College
 * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License (GPL)
 *
 * @version $Id: SearchEntryIterator.class.php,v 1.4 2007/09/04 20:25:43 adamfranco Exp $
 */
 
require_once(dirname(__FILE__)."/HarmoniEntryIterator.class.php");
require_once(dirname(__FILE__)."/HarmoniEntry.class.php");
 
/**
 * EntryIterator provides access to these objects sequentially, one at a time.
 * The purpose of all Iterators is to to offer a way for OSID methods to
 * return multiple values of a common type and not use an array.  Returning an
 * array may not be appropriate if the number of values returned is large or
 * is fetched remotely.  Iterators do not allow access to values by index,
 * rather you must access values in sequence. Similarly, there is no way to go
 * backwards through the sequence unless you place the values in a data
 * structure, such as an array, that allows for access by index.
 * 
 * @since 3/1/06
 * @package harmoni.osid_v2.logging
 * 
 * @copyright Copyright &copy; 2005, Middlebury College
 * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License (GPL)
 *
 * @version $Id: SearchEntryIterator.class.php,v 1.4 2007/09/04 20:25:43 adamfranco Exp $
 */
class SearchEntryIterator
    extends HarmoniEntryIterator
{
    
    /**
     * Constructor
     * 
     * @param string $logName 
     * @param array $searchCriteria 
     * @param object Type $formatType 
     * @param object Type $priorityType 
     * @return object 
     * @access public
     * @since 3/1/06
     */
    function SearchEntryIterator ( $logName, $searchCriteria, $formatType, $priorityType, $dbIndex ) {
        $this->_startDate =$searchCriteria['start'];
        $this->_endDate =$searchCriteria['end'];
        
        if (isset($searchCriteria['agent_id']))
            $this->_agentId = $searchCriteria['agent_id'];
        else
            $this->_agentId = false;
            
        if (isset($searchCriteria['node_id']))
            $this->_nodeId = $searchCriteria['node_id'];
        else
            $this->_nodeId = false;
            
        if (isset($searchCriteria['category']))
            $this->_category = $searchCriteria['category'];
        else
            $this->_category = false;
                
        $this->HarmoniEntryIterator($logName, $formatType, $priorityType, $dbIndex);
    }
    
    /**
     * Add where clauses to the query
     * 
     * @param object SelectQuery $query 
     * @return void 
     * @access public
     * @since 3/9/06
     */
    function addWhereClauses ( $query ) {
        $dbc = Services::getService("DatabaseManager");
        if ($this->_agentId) {
            $query->addTable("log_agent", INNER_JOIN, "log_entry.id = search_agent.fk_entry", "search_agent");
            $query->addWhere("search_agent.fk_agent = '".addslashes($this->_agentId->getIdString())."'");
        }
        
        if ($this->_nodeId) {
            $query->addTable("log_node", INNER_JOIN, "log_entry.id = search_node.fk_entry", "search_node");
            $query->addWhere("search_node.fk_node = '".addslashes($this->_nodeId->getIdString())."'");
        }
        
        if ($this->_category) {
            $query->addWhere("log_entry.category = '".addslashes($this->_category)."'");
        }
        
        $query->addWhere("log_entry.timestamp > ".$dbc->toDBDate($this->_startDate, $this->_dbIndex));
        $query->addWhere("log_entry.timestamp < ".$dbc->toDBDate($this->_endDate, $this->_dbIndex));
        
        parent::addWhereClauses($query);
    }
}
 
?>