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https://issues.apache.org/jira/browse/ISIS-1479?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andi Huber closed ISIS-1479.
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Resolution: Won't Fix
probably out of scope for the framework; can re-iterate if required
> DataNucleus data type mapping for streams (to support direct upload of large
> BLOBs)
> -----------------------------------------------------------------------------------
>
> Key: ISIS-1479
> URL: https://issues.apache.org/jira/browse/ISIS-1479
> Project: Isis
> Issue Type: Wish
> Components: Isis Persistence JDO
> Affects Versions: 1.13.0
> Reporter: Daniel Keir Haywood
> Priority: Minor
>
> from http://markmail.org/message/64xcc7twcxdrhfqj
> > With respect to the storage of the BLOBs themselves, I don't think (at
> > least I couldn't find) any datatype mapping to be able to map from a stream
> > (obtained from ServletInputStream) into a JDO entity, ie to avoid the
> > creation of the BLOB in-memory. If it *were* possible, then I don't think
> > Isis would care; just map the property as @Programmatic and Isis would
> > ignore it. Perhaps Andy might be able to chip in on this?
> java.io.File is currently the only java field type with a mapping that is
> streamable. See
> http://www.datanucleus.org/products/accessplatform_5_0/jdo/types.html#Other_Types
> Somebody could take existing code used for that type and contribute a mapping
> for some other java type.
> https://github.com/datanucleus/datanucleus-rdbms/blob/master/src/main/java/org/datanucleus/store/rdbms/mapping/datastore/BinaryStreamRDBMSMapping.java
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