engine/classes/ElggAnnotation.php

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<?php
class ElggAnnotation extends ElggExtender {

    protected function initializeAttributes() {
        parent::initializeAttributes();

        $this->attributes['type'] = 'annotation';
    }

    function __construct($id = null) {
        $this->initializeAttributes();

        if (!empty($id)) {
            // Create from db row
            if ($id instanceof stdClass) {
                $annotation = $id;

                $objarray = (array) $annotation;
                foreach ($objarray as $key => $value) {
                    $this->attributes[$key] = $value;
                }
            } else {
                // get an ElggAnnotation object and copy its attributes
                $annotation = elgg_get_annotation_from_id($id);
                $this->attributes = $annotation->attributes;
            }
        }
    }

    function save() {
        if ($this->id > 0) {
            return update_annotation($this->id, $this->name, $this->value, $this->value_type,
                $this->owner_guid, $this->access_id);
        } else {
            $this->id = create_annotation($this->entity_guid, $this->name, $this->value,
                $this->value_type, $this->owner_guid, $this->access_id);

            if (!$this->id) {
                throw new IOException(elgg_echo('IOException:UnableToSaveNew', array(get_class())));
            }
            return $this->id;
        }
    }

    function delete() {
        elgg_delete_river(array('annotation_id' => $this->id));
        return elgg_delete_metastring_based_object_by_id($this->id, 'annotations');
    }

    function disable() {
        return elgg_set_metastring_based_object_enabled_by_id($this->id, 'no', 'annotations');
    }

    function enable() {
        return elgg_set_metastring_based_object_enabled_by_id($this->id, 'yes', 'annotations');
    }

    public function getURL() {
        return get_annotation_url($this->id);
    }

    // SYSTEM LOG INTERFACE

    public function getObjectFromID($id) {
        return elgg_get_annotation_from_id($id);
    }
}

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