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https://issues.apache.org/jira/browse/JCR-2619?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12861398#action_12861398
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Alexander Klimetschek commented on JCR-2619:
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> d) the ISO8601 format is used extensively for serialization
> (persistence layer, remoting protocols, xml, etc)
If the persistence layer can't (currently) be changed to use the same
serialization format (eg. the optimized long) w/o conversion, I agree that the
string rep is probably better.
> improved internal representation of DATE values
> -----------------------------------------------
>
> Key: JCR-2619
> URL: https://issues.apache.org/jira/browse/JCR-2619
> Project: Jackrabbit Content Repository
> Issue Type: Improvement
> Components: jackrabbit-core, jackrabbit-spi-commons
> Reporter: Stefan Guggisberg
> Priority: Minor
> Fix For: 2.2.0
>
> Attachments:
> JCR-2619_improved_internal_representation_of_DATE_values.patch
>
>
> DATE values are currently internally represented as java.util.Calendar
> objects.
> Calendar objects have a huge memory footprint (approx 200bytes per instance)
> and are mutable.
> i suggest to replace the internal DATE representation with a ISO8601 format
> string
> (immutable and approx. 85-90% smaller footprint).
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