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From "Rick Hillegas (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-651) Re-enable the storing of java objects in the database
Date Mon, 14 Dec 2009 14:27:18 GMT

    [ https://issues.apache.org/jira/browse/DERBY-651?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12790176#action_12790176

Rick Hillegas commented on DERBY-651:

Hi Knut,

Thanks for reading the patch. I don't know why isValid() is synchronized. I simply copied
that signature from another tuple descriptor. I also introduced a synchronized isValid() method
to TableDescriptor in an earlier patch: derby-651-05-ac-dependencyTable.diff and a synchronized
isValid() method was introduced when SequenceDescriptor was added earlier this year. Most
of our Dependents have synchronized isValid() methods, but not all. Here's the situation:





> 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
>            Assignee: Rick Hillegas
>         Attachments: derby-651-01-aa-basicCreateDropType.diff, derby-651-02-af-udtColumnsRetvalsParams.diff,
derby-651-03-aa-udttestInstability.diff, derby-651-04-aa-javadoc.diff, derby-651-05-ac-dependencyTable.diff,
derby-651-06-aa-dropTable.diff, derby-651-07-aa-dependencyView.diff, derby-651-08-aa-dependencyRoutines.diff,
UserDefinedTypes.html, UserDefinedTypes.html, UserDefinedTypes.html, 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, cumbersome as it is, would do.

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