Implement migration of bt5 Document from filesystem to ZODB.

DocumentTemplateItem was renamed to FilesystemDocumentTemplateItem which will
be kept until the migration to Components is over. Also, move Extension
Component tests to its parent class (TestDocumentTemplateItem) to add tests
for bt5 Document.

product/ERP5/Document/BusinessTemplate.py

@@ -3327,7 +3327,9 @@ class ModuleTemplateItem(BaseTemplateItem):
     # Do not remove any module for safety.
     pass
 
-class DocumentTemplateItem(BaseTemplateItem):
+# XXX-arnau: when everything has been migrated to Components, everything in
+#            this class should be moved to DocumentTemplateItem
+class FilesystemDocumentTemplateItem(BaseTemplateItem):
   local_file_reader_name = staticmethod(readLocalDocument)
   local_file_writer_name = staticmethod(writeLocalDocument)
   local_file_importer_name = staticmethod(importLocalDocument)
@@ -3400,7 +3402,7 @@ class DocumentTemplateItem(BaseTemplateItem):
     update_dict = kw.get('object_to_update')
     force = kw.get('force')
     if context.getTemplateFormatVersion() == 1:
-      need_reset = isinstance(self, DocumentTemplateItem)
+      need_reset = isinstance(self, FilesystemDocumentTemplateItem)
       for key in self._objects.keys():
         # to achieve non data migration fresh installation parameters
         # differ from upgrade parameteres, so here the check have to be
@@ -3454,7 +3456,7 @@ class DocumentTemplateItem(BaseTemplateItem):
     else:
       object_keys = self._archive.keys()
     if object_keys:
-      if isinstance(self, DocumentTemplateItem):
+      if isinstance(self, FilesystemDocumentTemplateItem):
         self._resetDynamicModules()
       for key in object_keys:
         self.local_file_remover_name(key)
@@ -3478,10 +3480,10 @@ class DocumentTemplateItem(BaseTemplateItem):
     text = file.read()
     self._objects[file_name[:-3]] = text
 
-class FilesystemToZodbTemplateItem(DocumentTemplateItem,
+class FilesystemToZodbTemplateItem(FilesystemDocumentTemplateItem,
                                    ObjectTemplateItem):
   """
-  Abstract class to allow migration from DocumentTemplateItem to
+  Abstract class to allow migration from FilesystemDocumentTemplateItem to
   ObjectTemplateItem, this is useful for migration from filesystem to ZODB for
   PropertySheets and Components
   """
@@ -3526,14 +3528,15 @@ class FilesystemToZodbTemplateItem(DocumentTemplateItem,
   def _filesystemCompatibilityWrapper(method_name, object_dict_name):
     """
     Call ObjectTemplateItem method when the objects have already been
-    migrated, otherwise fallback on DocumentTemplateItem method for
+    migrated, otherwise fallback on FilesystemDocumentTemplateItem method for
     backward-compatibility
     """
     def inner(self, *args, **kw):
       if self._is_already_migrated(getattr(self, object_dict_name).keys()):
         result = getattr(ObjectTemplateItem, method_name)(self, *args, **kw)
       else:
-        result = getattr(DocumentTemplateItem, method_name)(self, *args, **kw)
+        result = getattr(FilesystemDocumentTemplateItem,
+                         method_name)(self, *args, **kw)
 
       return result
     return inner
@@ -3546,7 +3549,8 @@ class FilesystemToZodbTemplateItem(DocumentTemplateItem,
     if file_name.endswith('.xml'):
       return ObjectTemplateItem._importFile(self, file_name, *args, **kw)
     else:
-      return DocumentTemplateItem._importFile(self, file_name, *args, **kw)
+      return FilesystemDocumentTemplateItem._importFile(self, file_name,
+                                                        *args, **kw)
 
   def uninstall(self, *args, **kw):
     # Only for uninstall, the path of objects can be given as a
@@ -3560,7 +3564,7 @@ class FilesystemToZodbTemplateItem(DocumentTemplateItem,
     if self._is_already_migrated(object_keys):
       return ObjectTemplateItem.uninstall(self, *args, **kw)
     else:
-      return DocumentTemplateItem.uninstall(self, *args, **kw)
+      return FilesystemDocumentTemplateItem.uninstall(self, *args, **kw)
 
   def remove(self, context, **kw):
     """
@@ -3656,7 +3660,7 @@ class FilesystemToZodbTemplateItem(DocumentTemplateItem,
 
   def install(self, context, **kw):
     if not self._perform_migration:
-      return DocumentTemplateItem.install(self, context, **kw)
+      return FilesystemDocumentTemplateItem.install(self, context, **kw)
 
     # With format 0 of Business Template, the objects are stored in
     # '_archive' whereas they are stored in '_objects' with format
@@ -3692,9 +3696,9 @@ class PropertySheetTemplateItem(FilesystemToZodbTemplateItem):
   2/ The Property Sheets will all be migrated when installing the
      Business Template.
 
-  Therefore, this is an all or nothing migration, meaning that only
-  methods of DocumentTemplateItem will be called before the migration
-  has been performed, then ObjectTemplateItem methods afterwards.
+  Therefore, this is an all or nothing migration, meaning that only methods of
+  FilesystemDocumentTemplateItem will be called before the migration has been
+  performed, then ObjectTemplateItem methods afterwards.
   """
   # Only meaningful for filesystem Property Sheets
   local_file_reader_name = staticmethod(readLocalPropertySheet)
@@ -3744,16 +3748,16 @@ class PropertySheetTemplateItem(FilesystemToZodbTemplateItem):
 
     return PropertySheetDocument.importFromFilesystemDefinition(tool, klass)
 
-class ConstraintTemplateItem(DocumentTemplateItem):
+class ConstraintTemplateItem(FilesystemDocumentTemplateItem):
   local_file_reader_name = staticmethod(readLocalConstraint)
   local_file_writer_name = staticmethod(writeLocalConstraint)
   local_file_importer_name = staticmethod(importLocalConstraint)
   local_file_remover_name = staticmethod(removeLocalConstraint)
 
-from Products.ERP5Type.Core.ExtensionComponent import ExtensionComponent as \
-    ExtensionComponentDocument
+from Products.ERP5Type.Core.DocumentComponent import DocumentComponent as \
+    DocumentComponentDocument
 
-class ExtensionTemplateItem(FilesystemToZodbTemplateItem):
+class DocumentTemplateItem(FilesystemToZodbTemplateItem):
   """
   Extensions are now stored in ZODB rather than on the filesystem. However,
   some Business Templates may still have filesystem Extensions which need to
@@ -3764,12 +3768,16 @@ class ExtensionTemplateItem(FilesystemToZodbTemplateItem):
 
   _tool_id = 'portal_components'
 
-  # Only meaningful for filesystem Extensions
-  local_file_reader_name = staticmethod(readLocalExtension)
-  local_file_writer_name = staticmethod(writeLocalExtension)
-  # Extension needs no import
-  local_file_importer_name = None
-  local_file_remover_name = staticmethod(removeLocalExtension)
+  @staticmethod
+  def _getZodbObjectId(id):
+    return 'erp5.component.document.%s' % id
+
+  @staticmethod
+  def _getFilesystemPath(class_id):
+    from App.config import getConfiguration
+    return os.path.join(getConfiguration().instancehome,
+                        "Document",
+                        "%s.py" % class_id)
 
   def _importFile(self, file_name, file_obj):
     if (file_name.endswith('.py') and 
@@ -3805,6 +3813,30 @@ class ExtensionTemplateItem(FilesystemToZodbTemplateItem):
         XMLExportImport.exportXML(obj._p_jar, obj._p_oid, f)
         bta.addObject(f, key, path=path)
 
+  @staticmethod
+  def _migrateFromFilesystem(tool,
+                             filesystem_path,
+                             filesystem_file,
+                             class_id):
+    return DocumentComponentDocument.importFromFilesystem(tool,
+                                                          filesystem_path)
+
+from Products.ERP5Type.Core.ExtensionComponent import ExtensionComponent as \
+    ExtensionComponentDocument
+
+class ExtensionTemplateItem(DocumentTemplateItem):
+  """
+  Extensions are now stored in ZODB rather than on the filesystem. However,
+  some Business Templates may still have filesystem Extensions which need to
+  be migrated to the ZODB.
+  """
+  # Only meaningful for filesystem Extensions
+  local_file_reader_name = staticmethod(readLocalExtension)
+  local_file_writer_name = staticmethod(writeLocalExtension)
+  # Extension needs no import
+  local_file_importer_name = None
+  local_file_remover_name = staticmethod(removeLocalExtension)
+
   @staticmethod
   def _getZodbObjectId(id):
     return 'erp5.component.extension.%s' % id
@@ -3824,7 +3856,7 @@ class ExtensionTemplateItem(FilesystemToZodbTemplateItem):
     return ExtensionComponentDocument.importFromFilesystem(tool,
                                                            filesystem_path)
 
-class TestTemplateItem(DocumentTemplateItem):
+class TestTemplateItem(FilesystemDocumentTemplateItem):
   local_file_reader_name = staticmethod(readLocalTest)
   local_file_writer_name = staticmethod(writeLocalTest)
   # Test needs no import