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From "Abe White (JIRA)" <j...@apache.org>
Subject [jira] Commented: (OPENJPA-94) Allow MappingTool and persistence.xml to support drop-create for database schema
Date Tue, 02 Jan 2007 21:41:27 GMT

    [ http://issues.apache.org/jira/browse/OPENJPA-94?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12461839
] 

Abe White commented on OPENJPA-94:
----------------------------------

Note that the "SynchronizeMappings" property allows you to use all the arguments of the mappingtool.
 So you can try something like:

buildSchema(SchemaAction=refresh, DropTables=true)

Theoretically, that will drop unused columns and tables while adding any new columns and tables
needed for your mappings. 

> Allow MappingTool and persistence.xml to support drop-create for database schema
> --------------------------------------------------------------------------------
>
>                 Key: OPENJPA-94
>                 URL: http://issues.apache.org/jira/browse/OPENJPA-94
>             Project: OpenJPA
>          Issue Type: New Feature
>            Reporter: Shay Banon
>
> Currently, in the persistence context, one can define:
> <property name="openjpa.jdbc.SynchronizeMappings" value="buildSchema" />
> Which causes OpenJPA to build the database schema based on the mapping defined. Currently,
there is no way to define it to drop tables if they exists before creating the database schema.
This is very useful for tests that drop (if exists) and creates new tables for each test.

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