Changes between Version 18 and Version 19 of oaipmh_improvements
- Timestamp:
- 07/16/12 17:24:15 (13 years ago)
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oaipmh_improvements
v18 v19 80 80 One of the goals of this proposal is to provide an alternative OAIPMH harvester service that: 81 81 82 * retrieves metadata objects with '''unresolved''' references to other objects and places them in the OAIPMH harvest results82 * retrieves metadata objects with '''unresolved''' references to other objects 83 83 * retrieves and adds one copy of all referenced metadata objects to the OAIPMH harvest results 84 * extends the current OAIPMH implementation: the default behaviour will be to return resolved metadata records . Referencing the alternative OAIPMH service will deliver all metadata objects in unresolved form.84 * extends the current OAIPMH implementation: the default behaviour will be to return resolved metadata records (ie. the current implementation). Referencing the alternative OAIPMH service will deliver metadata objects. 85 85 86 86 The reason for implementing this extension is to enable conversions to formats that support metadata objects and relationships eg. ANDS RIF-CS. … … 104 104 ==== Metadata Object Harvesting ==== 105 105 106 Currently, !GeoNetwork will resolve all links before indexing the106 Currently, !GeoNetwork will store the unresolved metadata record (ie. without linked fragments) in the database and resolve all links to fragments before returning the record as a search result. This proposal will implement a : 107 107 * Implement Lucene search that retrieves metadata objects 108 108 * First stage returns metadata objects with unresolved references to other external metadata objects. This is not difficult as metadata objects are stored with unresolved references in the database. Note: links to internal relationships (eg. repeated metadata in the same record) will still need to be resolved.