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https://issues.apache.org/jira/browse/IMAP-181?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Charles updated IMAP-181:
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Attachment: jpa-migrator.zip
Very first draft uncomplete of jpa migrator project.
Comment welcome on the proposed approach:
- separate project
- main with list of jiras
Solutions such as http://www.liquibase.org/ may be a more solid approach, but
we may need more flexibility, especially on the data level.
I suppore jpa will in the future better handle the migration and schema changes.
- https://issues.apache.org/jira/browse/IMAP-180 : Need manuall recreate the fk
one by one (intermediary tables dissapear)
- https://issues.apache.org/jira/browse/IMAP-176 : Need to change #mail with
#private in mailbox.namespace column
- https://issues.apache.org/jira/browse/IMAP-172 : Need to remove messagecount
and size columns from mailbox
- https://issues.apache.org/jira/browse/IMAP-168 : Does seem to impact database
but not sure. Need confirmation ?
- https://issues.apache.org/jira/browse/IMAP-165 : JPA doesn't incrementally
create the @Index. So we need to create manually
> Implement database schema and data incremental migration for 3.0 release
> ------------------------------------------------------------------------
>
> Key: IMAP-181
> URL: https://issues.apache.org/jira/browse/IMAP-181
> Project: JAMES Imap
> Issue Type: New Feature
> Components: JPA Mailbox
> Environment: all
> Reporter: Eric Charles
> Assignee: Eric Charles
> Attachments: jpa-migrator.zip
>
>
> We need a way to upgrade the database (for JPA store) whenever it is needed.
> In general, a database upgrade is needed further a JIRA that impacts the
> database.
> This can be:
> 1. On a db schema level (table, columns, fk, index,...)
> 2. On data level (update some data, feed a column with relation keys,...).
> Plain SQL would be enough for the first point (not for the second one). PLSQL
> (or similar) would be needed for the second point.
> To ease things, a java "software" process will developed based on the
> existing JPA layer.
> The tool should be invoked with JIRA numbers as parameters.
> Each provided JIRA number would invoke a DB Change Command.
> As POC (Proof of Concept), we will first develop a tool that takes into
> account.
> - https://issues.apache.org/jira/browse/IMAP-176
> - https://issues.apache.org/jira/browse/IMAP-172
> - https://issues.apache.org/jira/browse/IMAP-168
> - https://issues.apache.org/jira/browse/IMAP-165
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