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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4255) DatabaseMetaData getDatabaseMajorVersion() and getDatabaseMinorVersion() return software version rather than database version
Date Thu, 04 Jun 2009 09:27:07 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12716207#action_12716207
] 

Knut Anders Hatlen commented on DERBY-4255:
-------------------------------------------

Having a public database property sounds like a good idea to me.

> DatabaseMetaData getDatabaseMajorVersion() and getDatabaseMinorVersion() return software
version rather than database version
> -----------------------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-4255
>                 URL: https://issues.apache.org/jira/browse/DERBY-4255
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC
>    Affects Versions: 10.1.3.1, 10.2.2.0, 10.3.3.0, 10.4.2.0, 10.5.1.1, 10.6.0.0
>            Reporter: Kathey Marsden
>
> The javadoc for 
> DatabaseMetaData.getDatabaseMajorVersion() and getDatabaseMinorVersion() says they should
retrieve the version number of the underlying database, so for soft upgraded databases this
should be the database format version not the current software version which it currently
does.  getDatabaseProductVersion should continue to return the current software version.
> To reproduce create a database wombat with 10.1 with ij and then run the program below
with 10.5.
> import java.sql.*;
> public class TestDBMetaDatabaseVersion {
>     public static void main(String[] args) throws Exception{
> 	Class.forName("org.apache.derby.jdbc.EmbeddedDriver").newInstance();
> 	Connection conn = DriverManager.getConnection("jdbc:derby:wombat");
> 	DatabaseMetaData dmd = conn.getMetaData();
> 	System.out.println("getDatabaseMajorVersion():" + dmd.getDatabaseMajorVersion());
> 	System.out.println("getDatabaseMinorVersion():" + dmd.getDatabaseMinorVersion());
> 	System.out.println("getDatabseProductVersion():"  + dmd.getDatabaseProductVersion());
> 	
>     }
> }
> The output shows:
> getDatabaseMajorVersion():10
> getDatabaseMinorVersion():5
> getDatabseProductVersion():10.5.1.2 - (777744M)
> The first two are incorrect and should show 10.1

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