Store Conversion in cache

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@28984 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/TextDocument.py

+# -*- coding: utf-8 -*-
 ##############################################################################
 #
 # Copyright (c) 2002 Nexedi SARL and Contributors. All Rights Reserved.
@@ -201,12 +202,14 @@ class TextDocument(Document, TextContent):
       if format == 'raw':
         return 'text/plain', self.getTextContent()
       mime_type = getToolByName(self, 'mimetypes_registry').lookupExtension('name.%s' % format)
+      mime_type = str(mime_type)
       src_mimetype = self.getTextFormat(DEFAULT_TEXT_FORMAT)
       if not src_mimetype.startswith('text/'):
         src_mimetype = 'text/%s' % src_mimetype
       # check if document has set text_content and convert if necessary
       text_content = self.getTextContent()
       if text_content:
+        if not self.hasConversion(format=format):
           portal_transforms = getToolByName(self, 'portal_transforms')
           result = portal_transforms.convertToData(mime_type, text_content,
                                                    object=self, context=self,
@@ -215,11 +218,12 @@ class TextDocument(Document, TextContent):
           if result is None:
             raise ConversionError('TextDocument conversion error. '
                                   'portal_transforms failed to convert to %s: %r' % (mime_type, self))
-
+          self.setConversion(result, mime_type, format=format)
+        else:
+          mime_type, result = self.getConversion(format=format)
         if substitution_method_parameter_dict is None:
           substitution_method_parameter_dict = {}
         result = self._substituteTextContent(result, **substitution_method_parameter_dict)
-
         return mime_type, result
       else:
         # text_content is not set, return empty string instead of None