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authormarcus <marcus@36083f99-b078-4883-b0ff-0f9b5a30f544>2009-04-27 16:10:50 +0000
committermarcus <marcus@36083f99-b078-4883-b0ff-0f9b5a30f544>2009-04-27 16:10:50 +0000
commitc20a845399abb93419e01d959f4884ba26424558 (patch)
tree06f58330064afce0ce755a451fbb847d8263da9d /engine/lib/relationships.php
parenta6820140aeb091ec3ec744454546a131d2554464 (diff)
downloadelgg-c20a845399abb93419e01d959f4884ba26424558.tar.gz
elgg-c20a845399abb93419e01d959f4884ba26424558.tar.bz2
Closes #975: Now possible to search by metadata and relationship
git-svn-id: https://code.elgg.org/elgg/trunk@3239 36083f99-b078-4883-b0ff-0f9b5a30f544
Diffstat (limited to 'engine/lib/relationships.php')
-rw-r--r--engine/lib/relationships.php94
1 files changed, 94 insertions, 0 deletions
diff --git a/engine/lib/relationships.php b/engine/lib/relationships.php
index 600bb2f0a..409de0015 100644
--- a/engine/lib/relationships.php
+++ b/engine/lib/relationships.php
@@ -700,6 +700,100 @@
}
/**
+ * Gets the number of entities by a the number of entities related to them in a particular way also constrained by
+ * metadata
+ *
+ * @param string $relationship The relationship eg "friends_of"
+ * @param bool $inverse_relationship Reverse the normal function of the query to instead say "give me all entities for whome $relationship_guid is a $relationship of" (default: true)
+ * @param String $meta_name The metadata name
+ * @param String $meta_value The metadata value
+ * @param string $type The type of entity (default: all)
+ * @param string $subtype The entity subtype (default: all)
+ * @param int $owner_guid The owner of the entities (default: none)
+ * @param int $limit
+ * @param int $offset
+ * @param boolean $count Set to true if you want to count the number of entities instead (default false)
+ * @param int $site_guid The site to get entities for. Leave as 0 (default) for the current site; -1 for all sites.
+ * @return array|int|false An array of entities, or the number of entities, or false on failure
+ */
+ function get_entities_from_relationships_and_meta($relationship, $inverse_relationship = false, $meta_name = "", $meta_value = "", $type = "", $subtype = "", $owner_guid = 0, $limit = 10, $offset = 0, $count = false, $site_guid = 0)
+ {
+
+ global $CONFIG;
+
+ $relationship = sanitise_string($relationship);
+ $inverse_relationship = (bool)$inverse_relationship;
+ $type = sanitise_string($type);
+ $subtype = get_subtype_id($type, $subtype);
+ $owner_guid = (int)$owner_guid;
+ $order_by = sanitise_string($order_by);
+ $limit = (int)$limit;
+ $offset = (int)$offset;
+ $site_guid = (int) $site_guid;
+ if ($site_guid == 0)
+ $site_guid = $CONFIG->site_guid;
+
+ $meta_n = get_metastring_id($meta_name);
+ $meta_v = get_metastring_id($meta_value);
+
+ //$access = get_access_list();
+
+ $where = array();
+
+ if ($relationship!="")
+ $where[] = "r.relationship='$relationship'";
+ if ($inverse_relationship) {
+ $on = 'e.guid = r.guid_two';
+ } else {
+ $on = 'e.guid = r.guid_one';
+ }
+ if ($type != "")
+ $where[] = "e.type='$type'";
+ if ($subtype)
+ $where[] = "e.subtype=$subtype";
+ if ($owner_guid != "")
+ $where[] = "e.container_guid='$owner_guid'";
+ if ($site_guid > 0)
+ $where[] = "e.site_guid = {$site_guid}";
+
+ $metajoin = "";
+ if (($meta_name!=="") || ($meta_value!=="")) {
+ $metajoin = " JOIN {$CONFIG->dbprefix}metadata m on e.guid=m.entity_guid";
+
+ if ($meta_name!=="")
+ $where[] = "m.name_id='$meta_n'";
+ if ($meta_value!=="")
+ $where[] = "m.value_id='$meta_v'";
+ }
+
+ if ($count) {
+ $query = "SELECT count(distinct e.guid) as total ";
+ } else {
+ $query = "SELECT distinct e.*, count(e.guid) as total ";
+ }
+
+ $query .= " from {$CONFIG->dbprefix}entity_relationships r JOIN {$CONFIG->dbprefix}entities e on {$on} {$metajoin} where ";
+
+ if (!empty($where))
+ foreach ($where as $w)
+ $query .= " $w and ";
+ $query .= get_access_sql_suffix("e"); // Add access controls
+ if (($meta_name!=="") || ($meta_value!=="")) $query .= ' and ' . get_access_sql_suffix("m"); // Add access controls
+
+ if (!$count) {
+ $query .= " group by e.guid ";
+ $query .= " order by total desc limit {$offset}, {$limit}"; // Add order and limit
+ return get_data($query, "entity_row_to_elggstar");
+ } else {
+ if ($count = get_data_row($query)) {
+ return $count->total;
+ }
+ }
+
+ return false;
+ }
+
+ /**
* Sets the URL handler for a particular relationship type
*
* @param string $function_name The function to register