= Moving to RDF =

|| '''Date''' || 2012-10-28 ||
|| '''Contact(s)''' || Simon Pigot ||
|| '''Last edited''' || ||
|| '''Status''' || draft, being discussed, in progress ||
|| '''Assigned to release''' || Not yet assigned to a release ||
|| '''Resources''' || Not allocated yet. ||
|| '''Ticket #''' || #XYZ ||

== Overview ==

GeoNetwork converts content from all metadata schemas that it supports to a common XML index document via XSLT. This common XML document is ingested by Lucene, which creates an index of the fields within the document. The Lucene index is used for searching in GeoNetwork.

The common XML index document for each schema could be replaced by an RDF (resource data format) document  

=== Proposal Type ===
 * '''Type''': Core Change
 * '''App''': !GeoNetwork
 * '''Module''': Data Manager, Search Interface

=== Links ===
 * '''Documents''':
 * '''Email discussions''':
 * '''Other wiki discussions''':

=== Voting History ===
 * Not proposed for voting yet.

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== Motivations ==
The current configuration is .... A change to ....

== Proposal == 
An in depth proposal can be found here : link
...

=== Unanswered Questions ===

Object Identifiers: One of the stated key advantages of RDF is that objects are identified once and then reused. In the work done to date, I don't see how converting a record to RDF will identify the individual objects for reuse eg. if a piece of contact info is present in two different metadata records, then how is that object uniquely identified? Perhaps the object identifier could be derived from an md5sum on the content of the object?



=== Backwards Compatibility Issues ===

=== New libraries added ===
Explain which and why new libraries are required for that proposal ...

== Risks ==

== Participants ==
 * Simon Cox, CESRE (CSIRO Australia)
 * Wahhaj Ali, Tianyi Chen, Cameron Fitzgerald, Joshua Hollick, Saxon Jensen, Rebecca Papadopoulos - University of Western Australia
 * Simon Pigot