aboutsummaryrefslogtreecommitdiff
path: root/engine
diff options
context:
space:
mode:
Diffstat (limited to 'engine')
-rw-r--r--engine/lib/entities.php121
-rw-r--r--engine/lib/relationships.php358
2 files changed, 358 insertions, 121 deletions
diff --git a/engine/lib/entities.php b/engine/lib/entities.php
index ad668591d..e344968a9 100644
--- a/engine/lib/entities.php
+++ b/engine/lib/entities.php
@@ -657,62 +657,6 @@
}
/**
- * Return entities matching a given query joining against a relationship.
- *
- * @param string $relationship The relationship eg "friends_of"
- * @param int $relationship_guid The guid of the entity to use query
- * @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"
- * @param string $type
- * @param string $subtype
- * @param int $owner_guid
- * @param string $order_by
- * @param int $limit
- * @param int $offset
- */
- function get_entities_from_relationship($relationship, $relationship_guid, $inverse_relationship = false, $type = "", $subtype = "", $owner_guid = 0, $order_by = "time_created desc", $limit = 10, $offset = 0)
- {
- global $CONFIG;
-
- $relationship = sanitise_string($relationship);
- $relationship_guid = (int)$relationship_guid;
- $inverse_relationship = (bool)$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;
-
- $access = get_access_list();
-
- $where = array();
-
- if ($relationship!="")
- $where[] = "r.relationship='$relationship'";
- if ($relationship_guid)
- $where[] = ($inverse_relationship ? "r.guid_one='$relationship'" : "r.guid_two='$relationship'");
- if ($type != "")
- $where[] = "e.type='$type'";
- if ($subtype)
- $where[] = "e.subtype=$subtype";
- if ($owner_guid != "")
- $where[] = "e.owner_guid='$owner_guid'";
-
- // Select what we're joining based on the options
- $joinon = "r.guid_two=e.guid";
- if (!$inverse_relationship)
- $joinon = "r.guid_one=e.guid";
-
- $query = "SELECT * from {$CONFIG->dbprefix}entities e JOIN {$CONFIG->dbprefix}entity_relationships r on $joinon where ";
- foreach ($where as $w)
- $query .= " $w and ";
- $query .= " (e.access_id in {$access} or (e.access_id = 0 and e.owner_guid = {$_SESSION['id']}))"; // Add access controls
- $query .= " order by $order_by limit $limit, $offset"; // Add order and limit
-
- return get_data($query, "entity_row_to_elggstar");
- }
-
- /**
* Delete a given entity.
*
* @param int $guid
@@ -732,71 +676,6 @@
}
/**
- * Define an arbitrary relationship between two entities.
- * This relationship could be a friendship, a group membership or a site membership.
- *
- * This function lets you make the statement "$guid_one has $relationship with $guid_two".
- *
- * TODO: Access controls? Are they necessary - I don't think so since we are defining
- * relationships between and anyone can do that. The objects should patch some access
- * controls over the top tho.
- *
- * @param int $guid_one
- * @param string $relationship
- * @param int $guid_two
- */
- function add_entity_relationship($guid_one, $relationship, $guid_two)
- {
- global $CONFIG;
-
- $guid_one = (int)$guid_one;
- $relationship = sanitise_string($relationship);
- $guid_two = (int)$guid_two;
-
- return insert_data("INSERT into {$CONFIG->dbprefix}entity_relationships (guid_one, relationship, guid_two) values ($guid_one, 'relationship', $guid_two)");
- }
-
- /**
- * Determine whether or not a relationship between two entities exists
- *
- * @param int $guid_one The GUID of the entity "owning" the relationship
- * @param string $relationship The type of relationship
- * @param int $guid_two The GUID of the entity the relationship is with
- * @return true|false
- */
- function check_entity_relationship($guid_one, $relationship, $guid_two)
- {
- global $CONFIG;
-
- $guid_one = (int)$guid_one;
- $relationship = sanitise_string($relationship);
- $guid_two = (int)$guid_two;
-
- if ($row = get_data_row("select guid_one from {$CONFIG->dbprefix}entity_relationships where guid_one=$guid_one and relationship='$relationship' and guid_two=$guid_two limit 1")) {
- return true;
- }
- return false;
- }
-
- /**
- * Remove an arbitrary relationship between two entities.
- *
- * @param int $guid_one
- * @param string $relationship
- * @param int $guid_two
- */
- function remove_entity_relationship($guid_one, $relationship, $guid_two)
- {
- global $CONFIG;
-
- $guid_one = (int)$guid_one;
- $relationship = sanitise_string($relationship);
- $guid_two = (int)$guid_two;
-
- return delete_data("DELETE from {$CONFIG->dbprefix}entity_relationships where guid_one=$guid_one and relationship='$relationship' and guid_two=$guid_two");
- }
-
- /**
* Handler called by trigger_plugin_hook on the "export" event.
*/
function export_entity_plugin_hook($hook, $entity_type, $returnvalue, $params)
diff --git a/engine/lib/relationships.php b/engine/lib/relationships.php
new file mode 100644
index 000000000..4214c1522
--- /dev/null
+++ b/engine/lib/relationships.php
@@ -0,0 +1,358 @@
+<?php
+ /**
+ * Elgg relationships.
+ * Stub containing relationship functions, making import and export easier.
+ *
+ * @package Elgg
+ * @subpackage Core
+ * @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU Public License version 2
+ * @author Marcus Povey <marcus@dushka.co.uk>
+ * @copyright Curverider Ltd 2008
+ * @link http://elgg.org/
+ */
+
+ /**
+ * Relationship class.
+ * @class ElggRelationship
+ * @author Marcus Povey
+ */
+ class ElggRelationship implements Importable, Exportable
+ {
+ /**
+ * This contains the site's main properties (id, etc)
+ * @var array
+ */
+ protected $attributes;
+
+ /**
+ * Construct a new site object, optionally from a given id value or row.
+ *
+ * @param mixed $id
+ */
+ function __construct($id = null)
+ {
+ $this->attributes = array();
+
+ if (!empty($id)) {
+
+ if ($id instanceof stdClass)
+ $relationship = $id; // Create from db row
+ else
+ $relationship = get_relationship($id);
+
+ if ($relationship) {
+ $objarray = (array) $relationship;
+ foreach($objarray as $key => $value) {
+ $this->attributes[$key] = $value;
+ }
+ }
+ }
+ }
+
+ protected function __get($name) {
+ if (isset($this->attributes[$name]))
+ return $this->attributes[$name];
+
+ return null;
+ }
+
+ protected function __set($name, $value) {
+ $this->attributes[$name] = $value;
+ return true;
+ }
+
+ public function save()
+ {
+ if ($this->id > 0)
+ {
+ delete_relationship($this->id);
+ }
+
+ $this->id = add_entity_relationship($this->guid_one, $this->relationship, $this->guid_two);
+ if (!$this->id) throw new IOException("Unable to save new ElggAnnotation");
+
+ return $this->id;
+
+ }
+
+ /**
+ * Delete a given relationship.
+ */
+ public function delete()
+ {
+ return delete_relationship($this->id);
+ }
+
+
+ public function export()
+ {
+ $tmp = new stdClass;
+ $tmp->attributes = $this->attributes;
+ $tmp->attributes['uuid_one'] = guid_to_uuid($this->guid_one);
+ $tmp->attributes['uuid_two'] = guid_to_uuid($this->guid_two);
+ return $tmp;
+ }
+
+ public function import(array $data, $version = 1)
+ {
+ if ($version == 1)
+ {
+ $uuid_one = NULL;
+ $uuid_two = NULL;
+
+ // Get attributes
+ foreach ($data['elements'][0]['elements'] as $attr)
+ {
+ $name = strtolower($attr['name']);
+ $text = $attr['text'];
+
+ switch ($name)
+ {
+ case 'id' : break;
+ case 'entity_uuid' : $entity_uuid = $text; break;
+ default : $this->attributes[$name] = $text;
+ }
+
+ }
+ // See if this entity has already been imported, if so then we need to link to it
+ $entity1 = get_entity_from_uuid($uuid_one);
+ $entity2 = get_entity_from_uuid($uuid_two);
+ if (($entity1) && ($entity2))
+ {
+
+ // Set the item ID
+ $this->attributes['guid_one'] = $entity1->getGUID();
+ $this->attributes['guid_two'] = $entity2->getGUID();
+
+ // save
+ $result = $this->save();
+ if (!$result)
+ throw new ImportException("There was a problem saving the ElggExtender");
+
+ return $this;
+ }
+
+ return false;
+
+ }
+ else
+ throw new ImportException("Unsupported version ($version) passed to ElggRelationship::import()");
+ }
+ }
+
+
+
+ /**
+ * Convert a database row to a new ElggRelationship
+ *
+ * @param stdClass $row
+ * @return stdClass or ElggMetadata
+ */
+ function row_to_elggrelationship($row)
+ {
+ if (!($row instanceof stdClass))
+ return $row;
+
+ return new ElggRelationship($row);
+ }
+
+ /**
+ * Return a relationship.
+ *
+ * @param int $id
+ */
+ function get_relationship($id)
+ {
+ global $CONFIG;
+
+ $id = (int)$id;
+
+ return row_to_elggrelationship(get_data_row("SELECT * from {$CONFIG->dbprefix}entity_relationships where id=$id"));
+ }
+
+ /**
+ * Delete a specific relationship.
+ *
+ * @param int $id
+ */
+ function delete_relationship($id)
+ {
+ global $CONFIG;
+
+ $id = (int)$id;
+
+ return row_to_elggrelationship(get_data_row("delete from {$CONFIG->dbprefix}entity_relationships where id=$id"));
+ }
+
+ /**
+ * Define an arbitrary relationship between two entities.
+ * This relationship could be a friendship, a group membership or a site membership.
+ *
+ * This function lets you make the statement "$guid_one has $relationship with $guid_two".
+ *
+ * TODO: Access controls? Are they necessary - I don't think so since we are defining
+ * relationships between and anyone can do that. The objects should patch some access
+ * controls over the top tho.
+ *
+ * @param int $guid_one
+ * @param string $relationship
+ * @param int $guid_two
+ */
+ function add_entity_relationship($guid_one, $relationship, $guid_two)
+ {
+ global $CONFIG;
+
+ $guid_one = (int)$guid_one;
+ $relationship = sanitise_string($relationship);
+ $guid_two = (int)$guid_two;
+
+ return insert_data("INSERT into {$CONFIG->dbprefix}entity_relationships (guid_one, relationship, guid_two) values ($guid_one, 'relationship', $guid_two)");
+ }
+
+ /**
+ * Determine whether or not a relationship between two entities exists
+ *
+ * @param int $guid_one The GUID of the entity "owning" the relationship
+ * @param string $relationship The type of relationship
+ * @param int $guid_two The GUID of the entity the relationship is with
+ * @return true|false
+ */
+ function check_entity_relationship($guid_one, $relationship, $guid_two)
+ {
+ global $CONFIG;
+
+ $guid_one = (int)$guid_one;
+ $relationship = sanitise_string($relationship);
+ $guid_two = (int)$guid_two;
+
+ if ($row = get_data_row("select guid_one from {$CONFIG->dbprefix}entity_relationships where guid_one=$guid_one and relationship='$relationship' and guid_two=$guid_two limit 1")) {
+ return true;
+ }
+ return false;
+ }
+
+ /**
+ * Remove an arbitrary relationship between two entities.
+ *
+ * @param int $guid_one
+ * @param string $relationship
+ * @param int $guid_two
+ */
+ function remove_entity_relationship($guid_one, $relationship, $guid_two)
+ {
+ global $CONFIG;
+
+ $guid_one = (int)$guid_one;
+ $relationship = sanitise_string($relationship);
+ $guid_two = (int)$guid_two;
+
+ return delete_data("DELETE from {$CONFIG->dbprefix}entity_relationships where guid_one=$guid_one and relationship='$relationship' and guid_two=$guid_two");
+ }
+
+ /**
+ * Return entities matching a given query joining against a relationship.
+ *
+ * @param string $relationship The relationship eg "friends_of"
+ * @param int $relationship_guid The guid of the entity to use query
+ * @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"
+ * @param string $type
+ * @param string $subtype
+ * @param int $owner_guid
+ * @param string $order_by
+ * @param int $limit
+ * @param int $offset
+ */
+ function get_entities_from_relationship($relationship, $relationship_guid, $inverse_relationship = false, $type = "", $subtype = "", $owner_guid = 0, $order_by = "time_created desc", $limit = 10, $offset = 0)
+ {
+ global $CONFIG;
+
+ $relationship = sanitise_string($relationship);
+ $relationship_guid = (int)$relationship_guid;
+ $inverse_relationship = (bool)$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;
+
+ $access = get_access_list();
+
+ $where = array();
+
+ if ($relationship!="")
+ $where[] = "r.relationship='$relationship'";
+ if ($relationship_guid)
+ $where[] = ($inverse_relationship ? "r.guid_one='$relationship'" : "r.guid_two='$relationship'");
+ if ($type != "")
+ $where[] = "e.type='$type'";
+ if ($subtype)
+ $where[] = "e.subtype=$subtype";
+ if ($owner_guid != "")
+ $where[] = "e.owner_guid='$owner_guid'";
+
+ // Select what we're joining based on the options
+ $joinon = "r.guid_two=e.guid";
+ if (!$inverse_relationship)
+ $joinon = "r.guid_one=e.guid";
+
+ $query = "SELECT * from {$CONFIG->dbprefix}entities e JOIN {$CONFIG->dbprefix}entity_relationships r on $joinon where ";
+ foreach ($where as $w)
+ $query .= " $w and ";
+ $query .= " (e.access_id in {$access} or (e.access_id = 0 and e.owner_guid = {$_SESSION['id']}))"; // Add access controls
+ $query .= " order by $order_by limit $limit, $offset"; // Add order and limit
+
+ return get_data($query, "entity_row_to_elggstar");
+ }
+
+
+ /**
+ * Handler called by trigger_plugin_hook on the "import" event.
+ */
+ function import_relationship_plugin_hook($hook, $entity_type, $returnvalue, $params)
+ {
+ $name = $params['name'];
+ $element = $params['element'];
+
+ if ($name=='ElggRelationship')
+ {
+ $tmp = new ElggRelationship();
+ $tmp->import($element);
+
+ return $tmp;
+ }
+ }
+
+ /**
+ * Handler called by trigger_plugin_hook on the "export" event.
+ */
+ function export_relationship_plugin_hook($hook, $entity_type, $returnvalue, $params)
+ {
+ global $CONFIG;
+
+ // Sanity check values
+ if ((!is_array($params)) && (!isset($params['guid'])))
+ throw new InvalidParameterException("GUID has not been specified during export, this should never happen.");
+
+ if (!is_array($returnvalue))
+ throw new InvalidParameterException("Entity serialisation function passed a non-array returnvalue parameter");
+
+ $guid = (int)$params['guid'];
+
+ $result = get_data("SELECT * from {$CONFIG->dbprefix}entity_relationships where guid_one = $guid");
+
+ if ($result)
+ {
+ foreach ($result as $r)
+ $returnvalue[] = $r;
+ }
+
+ return $returnvalue;
+ }
+
+ /** Register the import hook */
+ register_plugin_hook("import", "all", "import_relationship_plugin_hook", 1);
+
+ /** Register the hook, ensuring entities are serialised first */
+ register_plugin_hook("export", "all", "export_relationship_plugin_hook", 1);
+?> \ No newline at end of file
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-27 22:21:00 +0000