function _ctools_export_get_defaults_from_cache

Attempt to load default objects from cache.

We can be instructed to cache default objects by the schema. If so we cache them as an index which is a list of all default objects, and then each default object is cached individually.

Return value

Either an array of cached objects, or NULL indicating a cache rebuild is necessary.

File

includes/export.inc, line 738

Code

function _ctools_export_get_defaults_from_cache($table, $export) {
    $data = cache_get('ctools_export_index:' . $table, $export['default cache bin']);
    if (!$data || !is_array($data->data)) {
        return;
    }
    // This is the perfectly valid case where there are no default objects,
    // and we have cached this state.
    if (empty($data->data)) {
        return array();
    }
    $keys = array();
    foreach ($data->data as $name) {
        $keys[] = 'ctools_export:' . $table . ':' . $name;
    }
    $data = cache_get_multiple($keys, $export['default cache bin']);
    // If any of our indexed keys missed, then we have a fail and we need to
    // rebuild.
    if (!empty($keys)) {
        return;
    }
    // Now, translate the returned cache objects to actual objects.
    $cache = array();
    foreach ($data as $cached_object) {
        $cache[$cached_object->data->{$export['key']}] = $cached_object->data;
    }
    return $cache;
}