class.ilPageContentUsage.php

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<?php

/* Copyright (c) 1998-2011 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilPageContentUsage
{
        static function saveUsage($a_pc_type, $a_pc_id, $a_usage_type, $a_usage_id, $a_usage_hist_nr = 0)
        {
                global $ilDB;
                
                $ilDB->replace("page_pc_usage", array (
                        "pc_type" => array("text", $a_pc_type),
                        "pc_id" => array("integer", (int) $a_pc_id),
                        "usage_type" => array("text", $a_usage_type),
                        "usage_id" => array("integer", (int) $a_usage_id),
                        "usage_hist_nr" => array("integer", (int) $a_usage_hist_nr)
                        ),array());
        }

        static function deleteAllUsages($a_pc_type, $a_usage_type, $a_usage_id, $a_usage_hist_nr = 0)
        {
                global $ilDB;
                
                $ilDB->manipulate($q = "DELETE FROM page_pc_usage WHERE usage_type = ".
                        $ilDB->quote($a_usage_type, "text").
                        " AND usage_id = ".$ilDB->quote((int) $a_usage_id, "integer").
                        " AND usage_hist_nr = ".$ilDB->quote((int) $a_usage_hist_nr, "integer").
                        " AND pc_type = ".$ilDB->quote($a_pc_type, "text"));
        }
        
        function getUsages($a_pc_type, $a_pc_id, $a_incl_hist = true)
        {
                global $ilDB;
                
                $q = "SELECT * FROM page_pc_usage ".
                        " WHERE pc_type = ".$ilDB->quote($a_pc_type, "text").
                        " AND pc_id = ".$ilDB->quote($a_pc_id, "integer");
                        
                if (!$a_incl_hist)
                {
                        $q.= " AND usage_hist_nr = ".$ilDB->quote(0, "integer");
                }
                        
                $set = $ilDB->query($q);
                $usages = array();
                while ($rec  = $ilDB->fetchAssoc($set))
                {
                        $usages[] = $rec;
                }
                return $usages;
        }

        function getUsagesOfPage($a_usage_id, $a_usage_type, $a_hist_nr = 0, $a_all_hist_nrs = false)
        {
                global $ilDB;

                if (!$a_all_hist_nrs)
                {
                        $hist_str = " AND usage_hist_nr = ".$ilDB->quote($a_hist_nr, "integer");
                }

                $set = $ilDB->query("SELECT pc_type, pc_id FROM page_pc_usage WHERE ".
                        " usage_id = ".$ilDB->quote($a_usage_id, "integer")." AND ".
                        " usage_type = ".$ilDB->quote($a_usage_type, "text").
                        $hist_str
                        );

                $usages = array();
                while ($rec = $ilDB->fetchAssoc($set))
                {
                        $usages[$rec["pc_type"].":".$rec["pc_id"]] = array(
                                "type" => $rec["pc_type"],
                                "id" => $rec["pc_id"]
                        );
                }

                return $usages;
        }

}