====== Collection elements by ====== A QUERY Datastream is an ITQL query that overrides the Islandora’s default ITQL query. * Default ITQL query (''sites/all/modules/islandora-github/CollectionClass.inc''):


$query_string = 'select $object $title $content from <#ri>
                 where ($object  $title
                 and $object  $content
                 and ($object  
                 or $object  )
                 and $object  )
                 minus $content  
                 order by $title';

* Add datastream "QUERY" to collection with new ITQL query:


select $object $title $content $description from <#ri>
where ($object  $title
and $object  $description
and $object  $content
and ($object  %parent_collection%
or $object  %parent_collection%)
and $object  )
minus $content  
order by $description

* NOTE: **''%parent_collection%''** will be replaced by **''''** in php code.