function apachesolr_attachments_update_7004 in Apache Solr Attachments 7
Change apachesolr_index_entities_file.body field to longblob.
Bypass PDOexception "Incorrect string value" and lost of the information that is stored as UTF-8 4 bytes character(s) in MySQL.
See also
https://drupal.org/node/1853836
https://drupal.org/node/2014889
File
- ./apachesolr_attachments.install, line 274 
- Install, update and uninstall functions for the apachesolr_attachments module.
Code
function apachesolr_attachments_update_7004() {
  $schema = apachesolr_attachments_schema();
  $field = $schema['apachesolr_index_entities_file']['fields']['body'];
  db_change_field('apachesolr_index_entities_file', 'body', 'body', $field);
}