[STANBOL-432] Use LD Path as mapping/indexing language for the Entityhub

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: entityhub-0.11.0
• Component/s: Entityhub
• Assignee: Rupert Westenthaler
• Reporter: Rupert Westenthaler
• Created: 15/Dec/11 14:17
• Updated: 17/Jul/13 15:14
• Resolved: 13/Dec/12 13:15

Description

Currently an own lanugage is used that supports a limited amount of transformation and filters when importing/indexing data with the Entityhub.

The documentation for this language can be found at http://wiki.iks-project.eu/index.php/RepresentationMapping. The goal is to replace this language by LD Path.

However the currently used Mapping language does also have two core features that are not supported by LDPath

1) global language filters: This allow to define languages to be imported for all mapped fields
2) Wildcards on properties (e.g. dc:* -> import all Dublin Core properties): See http://code.google.com/p/ldpath/issues/detail?id=1 for the according feature request.

In addition the usage of Paths (e.g. friend_names = foaf:knows/foaf:name) will also require some changes in the Indexing utilities, because currently it is not possible to request data for entities other than the currently indexed one.