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From "Rick Hillegas (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-651) Re-enable the storing of java objects in the database
Date Fri, 02 Oct 2009 19:35:23 GMT

     [ https://issues.apache.org/jira/browse/DERBY-651?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rick Hillegas updated DERBY-651:
--------------------------------

    Attachment: UserDefinedTypes.html

Attaching a first rev of a functional spec for User Defined Types. This describes a minimal
amount of work needed to declare Java objects which can be stored in the database. In this
first rev, the query language is only able to see these objects as structs. The spec lists
future enhancements which can make these types even more useful.

I don't expect that I will have time to implement this feature in the 10.6 timeframe. However,
I would be happy to coach someone else through the process.

Thanks is advance for reading this spec and posting your feedback.

> Re-enable the storing of java objects in the database
> -----------------------------------------------------
>
>                 Key: DERBY-651
>                 URL: https://issues.apache.org/jira/browse/DERBY-651
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Rick Hillegas
>         Attachments: UserDefinedTypes.html
>
>
> Islay Symonette, in an email thread called "Storing Java Objects in a table" on October
26, 2005 requests the ability to store java objects in the database.
> Old releases of Cloudscape allow users to declare a column's type to be a Serializable
class. This feature was removed from Derby because the syntax was non-standard. However, most
of the machinery to support objects serialized to columns is still in Derby and is even used
in system tables. We need to agree on some standard syntax here and re-expose this useful
feature. Some subset of the ANSI adt syntax, cumbersom as it is, would do.

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