erp5_full_text_mroonga_catalog: Use finer-grained serialization_tag.

The reason why root document is being used as serialization_tag is to cover
document which get recursively reindexed: such indexation activity would
not be able to be validated against all the the serializatio_tag of
documents it will process. But here, fulltext indexations are all spawned
per-document anyway, so we can use such per-document values.

bt5/erp5_full_text_mroonga_catalog/CatalogMethodTemplateItem/portal_catalog/erp5_mysql_innodb/SQLCatalog_deferFullTextIndex.py

@@ -14,7 +14,7 @@ except KeyError:
 # including activities spawned by others into its activity group.
 # But prevent the group from going below 10 activities, for better throughput.
 group_method_cost = min(.1, 1. / len(getPath))
-for document, root_document_path in zip(getPath, getRootDocumentPath):
+for document in getPath:
   getattr(
     activateObject(
       document,
@@ -23,7 +23,7 @@ for document, root_document_path in zip(getPath, getRootDocumentPath):
       node='same',
       group_method_id=GROUP_METHOD_ID,
       group_method_cost=group_method_cost,
-      serialization_tag='full_text_' + root_document_path,
+      serialization_tag='full_text_' + document,
     ),
     METHOD_ID,
   )()

bt5/erp5_full_text_mroonga_catalog/CatalogMethodTemplateItem/portal_catalog/erp5_mysql_innodb/SQLCatalog_deferFullTextIndex.xml

@@ -50,7 +50,7 @@
         </item>
         <item>
             <key> <string>_params</string> </key>
-            <value> <string>getPath, getRootDocumentPath</string> </value>
+            <value> <string>getPath</string> </value>
         </item>
         <item>
             <key> <string>description</string> </key>