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From "Rick Hillegas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-4637) The Developer's Guide implies that, for in-memory database names, Derby does not resolve relative and absolute paths to the same in-memory database
Date Tue, 06 Sep 2011 17:25:09 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4637?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13098179#comment-13098179
] 

Rick Hillegas commented on DERBY-4637:
--------------------------------------

Thanks, Kim. Looks good to me. +1

> The Developer's Guide implies that, for in-memory database names, Derby does not resolve
relative and absolute paths to the same in-memory database
> ---------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-4637
>                 URL: https://issues.apache.org/jira/browse/DERBY-4637
>             Project: Derby
>          Issue Type: Bug
>          Components: Documentation
>    Affects Versions: 10.6.1.0
>            Reporter: Rick Hillegas
>            Assignee: Kim Haase
>         Attachments: DERBY-4637.diff, DERBY-4637.stat, DERBY-4637.zip
>
>
> The Developer's Guide says in the section titled 'Conventions for specifying the database
path':
> "When accessing databases from the file system (instead of from memory, the classpath,
or a jar file), any path that is not absolute is interpreted as relative to the system directory."
> A casual reader might interpret this to mean that the system directory is not used to
resolve paths in the names of in-memory databases. But, in fact, Derby does use the system
directory to qualify relative paths in the names of in-memory databases.
> For instance, if the system directory is /Users/blah/derby/dummy, then Derby treats the
following  urls as identifiers for the same in-memory database:
> jdbc:derby:memory:db
> jdbc:derby:memory:/Users/blah/derby/dummy/db
> Similarly, Derby treats the following urls as names for the same in-memory database:
> jdbc:derby:memory:/foo/bar/db
> jdbc:derby:memory:/foo/bar/../bar/db
> The Developer's Guide could use a section on how to resolve in-memory database names.

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