Dan Haywood created ISIS-1479:
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Summary: 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: New Feature
Components: Core
Affects Versions: 1.13.0
Reporter: Dan Haywood
Assignee: Dan Haywood
Priority: Minor
Fix For: 1.16.0
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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