getIdentifiers, resolveUri, findLocalObject Activity algorithms
Also modified related classes to support this feature.
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38bea34562
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@ -213,6 +213,28 @@ class Notice extends Managed_DataObject
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return $this->uri;
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}
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/*
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* Get a Notice object by URI. Will call external plugins for help
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* using the event StartGetNoticeFromURI.
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*
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* @param string $uri A unique identifier for a resource (notice in this case)
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*/
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static function fromUri($uri)
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{
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$notice = null;
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if (Event::handle('StartGetNoticeFromUri', array($uri, &$notice))) {
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$notice = Notice::getKV('uri', $uri);
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Event::handle('EndGetNoticeFromUri', array($uri, $notice));
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}
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if (!$notice instanceof Notice) {
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throw new UnknownUriException($uri);
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}
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return $notice;
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}
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/*
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* @param $root boolean If true, link to just the conversation root.
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*
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@ -440,7 +440,7 @@ class ActivityObject
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$object->type = (empty($notice->object_type)) ? ActivityObject::NOTE : $notice->object_type;
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$object->id = $notice->uri;
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$object->title = 'New ' . ActivityObject::canonicalType($object->type) . ' by ';
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$object->title = 'New ' . self::canonicalType($object->type) . ' by ';
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try {
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$object->title .= $notice->getProfile()->getAcctUri();
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} catch (ProfileNoAcctUriException $e) {
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@ -584,7 +584,7 @@ class ActivityObject
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$object->thumbnail = null;
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}
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switch (ActivityObject::canonicalType($object->type)) {
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switch (self::canonicalType($object->type)) {
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case 'image':
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$object->largerImage = $file->url;
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break;
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@ -860,7 +860,7 @@ class ActivityObject
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// We can probably use the whole schema URL here but probably the
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// relative simple name is easier to parse
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$object['objectType'] = ActivityObject::canonicalType($this->type);
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$object['objectType'] = self::canonicalType($this->type);
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// summary
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$object['summary'] = $this->summary;
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@ -945,7 +945,7 @@ class ActivityObject
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}
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}
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switch (ActivityObject::canonicalType($this->type)) {
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switch (self::canonicalType($this->type)) {
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case 'image':
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if (!empty($this->largerImage)) {
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$object['fullImage'] = array('url' => $this->largerImage);
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@ -964,13 +964,18 @@ class ActivityObject
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return array_filter($object);
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}
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static function canonicalType($type) {
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$ns = 'http://activitystrea.ms/schema/1.0/';
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if (substr($type, 0, mb_strlen($ns)) == $ns) {
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return substr($type, mb_strlen($ns));
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} else {
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return $type;
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public function getIdentifiers() {
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$ids = array();
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foreach(array('id', 'link', 'url') as $id) {
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if (isset($this->$id)) {
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$ids[] = $this->$id;
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}
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}
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return array_unique($ids);
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}
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static function canonicalType($type) {
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return ActivityUtils::resolveUri($type, true);
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}
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static function mimeTypeToObjectType($mimeType) {
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@ -349,12 +349,57 @@ class ActivityUtils
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static function compareTypes($type, $objects) // this does verbs too!
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{
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$type = ActivityObject::canonicalType($type);
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$type = self::resolveUri($type);
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foreach ((array)$objects as $object) {
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if ($type === ActivityObject::canonicalType($object)) {
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if ($type === self::resolveUri($object)) {
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return true;
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}
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}
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return false;
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}
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static function resolveUri($uri, $make_relative=false)
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{
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if (empty($uri)) {
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throw new ServerException('No URI to resolve in ActivityUtils::resolveUri');
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}
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if (!$make_relative && parse_url($uri, PHP_URL_SCHEME) == '') { // relative -> absolute
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$uri = Activity::SCHEMA . $uri;
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} elseif ($make_relative) { // absolute -> relative
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$uri = basename($uri); //preg_replace('/^http:\/\/activitystrea\.ms\/schema\/1\.0\//', '', $uri);
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} // absolute schemas pass through unharmed
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return $uri;
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}
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static function findLocalObject(array $uris, $type=ActivityObject::NOTE) {
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$object = null;
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// TODO: Extend this in plugins etc.
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if (Event::handle('StartFindLocalActivityObject', array($uris, $type, &$object))) {
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switch (self::resolveUri($type)) {
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case ActivityObject::PERSON:
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// GROUP will also be here in due time...
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$object = new Profile();
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break;
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default:
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$object = new Notice();
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}
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}
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foreach (array_unique($uris) as $uri) {
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try {
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// the exception thrown will cancel before reaching $object
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$object = call_user_func(array($object, 'fromUri'), $uri);
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break;
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} catch (Exception $e) {
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common_debug('Could not find local activity object from uri: '.$uri);
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}
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}
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if (!empty($object)) {
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Event::handle('EndFindLocalActivityObject', array($object->getUri(), $type, $object));
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} else {
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throw new Exception('Could not find any activityobject stored locally with given URI');
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}
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return $object;
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}
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}
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