#009321: fetch content search with sort_by failed

In template, using sort_by on attribute with class_identifier/member syntax in fetch content search failed. It works well with sort_by with attribute_id.

Operating System: Linux
PHP Version: 4.4.2
Database and version: MySQL 4.1

fetch(content, search, hash(text, 'foo', sort_by, array('attribute', true, 'class_identifier/attribute'))</code>
produces a wrong SQL query. class_identifier/attribute is not replaced by its attribute id.
<code>
Error: eZMySQLDB      Nov 02 2006 10:53:21

Query error: Unknown column 'programme' in 'where clause'. Query: SELECT DISTINCT ezcontentobject.*, ezcontentclass.name as class_name, ezcontentobject_tree.*
                            , ezcontentobject_name.name as name,  ezcontentobject_name.real_translation 
                    FROM
                       ezsearch_tmp__0 ,
                       ezcontentobject,
                       ezcontentclass,
                       ezcontentobject_tree
                       , ezcontentobject_name 
                       , ezcontentobject_attribute as a0
                    WHERE
                     
                    ezcontentobject.id=ezsearch_tmp__0.contentobject_id AND
                    ezcontentobject.contentclass_id = ezcontentclass.id and
                    ezcontentclass.version = '0' and
                    ezcontentobject.id = ezcontentobject_tree.contentobject_id and
                    ezcontentobject_tree.node_id = ezcontentobject_tree.main_node_id
                     and  ezcontentobject_tree.contentobject_id = ezcontentobject_name.contentobject_id and
                                  ezcontentobject_tree.contentobject_version = ezcontentobject_name.content_version and 
 ( ezcontentobject_name.language_id & ezcontentobject.language_mask > 0 AND
     ( (   ezcontentobject.language_mask - ( ezcontentobject.language_mask & ezcontentobject_name.language_id ) ) & 1 )
   + ( ( ( ezcontentobject.language_mask - ( ezcontentobject.language_mask & ezcontentobject_name.language_id ) ) & 2 ) )
   <
     ( ezcontentobject_name.language_id & 1 )
   + ( ( ezcontentobject_name.language_id & 2 ) )
 ) 

<code>fetch(content, search, hash(text, 'foo', sort_by, array('attribute', true, 20))</code> works well.