Add inner class for metadata to Item, delay metadata loading until required,
reduce impact of changes
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Key: DS-694
URL: http://jira.dspace.org/jira/browse/DS-694
Project: DSpace 1.x
Issue Type: Improvement
Reporter: Graham Triggs
Assignee: Graham Triggs
Fix For: 1.7.0
Use an inner class in Item to cache the metadata entries. This allows us to
delay metadata loading until it is required, instead of when the Item is
instantiated.
Further, the writing can be restructured to better determine if the metadata
has actually changed - or if the other properties have been modified - reducing
the number of database accesses, and in particular avoiding 'false' updates to
the modification date for the item.
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