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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-651) Re-enable the storing of java objects in the database
Date Thu, 10 Dec 2009 15:58:19 GMT

    [ https://issues.apache.org/jira/browse/DERBY-651?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12788760#action_12788760
] 

Knut Anders Hatlen commented on DERBY-651:
------------------------------------------

Hi Rick,

I noticed this error while playing with the feature:

ij> create type java_string external name 'java.lang.String' language java;
0 rows inserted/updated/deleted
ij> create table t(x java_string);
0 rows inserted/updated/deleted
ij> drop table t;
0 rows inserted/updated/deleted
ij> drop type java_string restrict;
ERROR 42X94: Table '341cc09e-0125-7948-f4fb-00003fb80d23' does not exist.

> 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,
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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