Task #7042
Story #7053: DataONE should preserve media type metadata when transferring objects between systems
Create an element for the character set encoding in the system metadata schema
100%
Description
We need to create an optional element for the character set encoding the system metadata schema.
Please see related the issue https://redmine.dataone.org/issues/6391
Related issues
Associated revisions
Added start of design for handling media type metadata. refs #7042
History
#1 Updated by Jing Tao over 9 years ago
- Related to Bug #6391: Science metadata files with different checksums on CN and MN - encoding added
#2 Updated by Dave Vieglais over 9 years ago
- % Done changed from 0 to 30
- Category set to d1_schemas
- Status changed from New to In Progress
This is necessary because the transfer encoding information for content is not being preserved, and is necessary to ensure reliable re-transmission of content. For example, an xml document that is not encoded in the assumed default character encoding will be resent using either no character encoding information or the default, which may be incorrect and lead to unexpected results.
#3 Updated by Dave Vieglais over 9 years ago
This is a complex topic that requires broader changes to full support media type when transferring across multiple systems.
Discussion in: https://repository.dataone.org/documents/Projects/cicore/architecture/api-documentation/source/design/what_is_it.txt
#4 Updated by Dave Vieglais over 9 years ago
- Parent task set to #7053
#5 Updated by Ben Leinfelder over 9 years ago
I believe this is now covered by MediaTypeProperty element[s]?
#6 Updated by Chris Jones over 9 years ago
while this is covered by the new MediaTypeProperty element which is part of the MediaType element used in an ObjectFormat, I think it may quite applicable. For instance, in the case of the "text/csv" media type, it has an optional "charset" parameter. When not used, it defaults to "UTF-8". However, if extend our text/csv object format to have a UTF-8 element, then we are defining ALL text/csv to be UTF-8 encoded, which certainly isn't the case. So, it seems that we DO need another element in the SystemMetadata type to cover this, no?
#7 Updated by Ben Leinfelder over 9 years ago
- translation missing: en.field_remaining_hours set to 0.0
- Status changed from In Progress to Closed
- % Done changed from 30 to 100
v2.SystemMetadata.MediaType.MediaTypeProperty can be used to define the character encoding for individual objects without affecting the ObjectFormat.MediaType that may be used by other objects.
